Merge https://github.com/coelckers/gzdoom

# Conflicts:
#	src/r_bsp.cpp
#	src/r_plane.cpp
#	src/r_things.cpp

src/CMakeLists.txt

@@ -1168,7 +1168,6 @@ set (PCH_SOURCES
 	p_udmf.cpp
 	p_usdf.cpp
 	p_user.cpp
-	p_writemap.cpp
 	p_xlat.cpp
 	parsecontext.cpp
 	po_man.cpp

src/actor.h

@@ -779,14 +779,7 @@ public:
 	// set translation
 	void SetTranslation(FName trname);
 
-	double GetBobOffset(double ticfrac = 0) const
-	{
-		if (!(flags2 & MF2_FLOATBOB))
-		{
-			return 0;
-		}
-		return BobSin(FloatBobPhase + level.maptime + ticfrac);
-	}
+	double GetBobOffset(double ticfrac = 0) const;
 
 	// Enter the crash state
 	void Crash();

src/am_map.cpp

@@ -70,6 +70,7 @@
 #include "po_man.h"
 #include "a_keys.h"
 #include "r_data/colormaps.h"
+#include "g_levellocals.h"
 
 
 //=============================================================================
@@ -601,23 +602,21 @@ CUSTOM_CVAR (Int, am_showalllines, -1, 0)	// This is a cheat so don't save it.
 {
 	int flagged = 0;
 	int total = 0;
-	if (self > 0 && numlines > 0)
+	if (self > 0 && level.lines.Size() > 0)
 	{
-		for(int i=0;i<numlines;i++)
+		for(auto &line : level.lines)
 		{
-			line_t *line = &lines[i];
-
 			// disregard intra-sector lines
-			if (line->frontsector == line->backsector) continue;	
+			if (line.frontsector == line.backsector) continue;	
 
 			// disregard control sectors for deep water
-			if (line->frontsector->e->FakeFloor.Sectors.Size() > 0) continue;	
+			if (line.frontsector->e->FakeFloor.Sectors.Size() > 0) continue;	
 
 			// disregard control sectors for 3D-floors
-			if (line->frontsector->e->XFloor.attached.Size() > 0) continue;	
+			if (line.frontsector->e->XFloor.attached.Size() > 0) continue;	
 
 			total++;
-			if (line->flags & ML_DONTDRAW) flagged++;
+			if (line.flags & ML_DONTDRAW) flagged++;
 		}
 		am_showallenabled =  (flagged * 100 / total >= self);
 	}
@@ -1030,17 +1029,17 @@ static void AM_findMinMaxBoundaries ()
 	min_x = min_y = FLT_MAX;
 	max_x = max_y = FIXED_MIN;
   
-	for (int i = 0; i < numvertexes; i++)
+	for (auto &vert : level.vertexes)
 	{
-		if (vertexes[i].fX() < min_x)
-			min_x = vertexes[i].fX();
-		else if (vertexes[i].fX() > max_x)
-			max_x = vertexes[i].fX();
+		if (vert.fX() < min_x)
+			min_x = vert.fX();
+		else if (vert.fX() > max_x)
+			max_x = vert.fX();
     
-		if (vertexes[i].fY() < min_y)
-			min_y = vertexes[i].fY();
-		else if (vertexes[i].fY() > max_y)
-			max_y = vertexes[i].fY();
+		if (vert.fY() < min_y)
+			min_y = vert.fY();
+		else if (vert.fY() > max_y)
+			max_y = vert.fY();
 	}
   
 	max_w = max_x - min_x;
@@ -2382,7 +2381,6 @@ bool AM_isLockBoundary (line_t &line, int *lockptr = NULL)
 
 void AM_drawWalls (bool allmap)
 {
-	int i;
 	static mline_t l;
 	int lock, color;
 
@@ -2393,18 +2391,18 @@ void AM_drawWalls (bool allmap)
 		if (p == MapPortalGroup) continue;
 
 
-		for (i = 0; i < numlines; i++)
+		for (auto &line : level.lines)
 		{
 			int pg;
 			
-			if (lines[i].sidedef[0]->Flags & WALLF_POLYOBJ)
+			if (line.sidedef[0]->Flags & WALLF_POLYOBJ)
 			{
 				// For polyobjects we must test the surrounding sector to get the proper group.
-				pg = P_PointInSector(lines[i].v1->fX() + lines[i].Delta().X / 2, lines[i].v1->fY() + lines[i].Delta().Y / 2)->PortalGroup;
+				pg = P_PointInSector(line.v1->fX() + line.Delta().X / 2, line.v1->fY() + line.Delta().Y / 2)->PortalGroup;
 			}
 			else
 			{
-				pg = lines[i].frontsector->PortalGroup;
+				pg = line.frontsector->PortalGroup;
 			}
 			DVector2 offset;
 			bool portalmode = numportalgroups > 0 &&  pg != MapPortalGroup;
@@ -2418,10 +2416,10 @@ void AM_drawWalls (bool allmap)
 			}
 			else continue;
 
-			l.a.x = (lines[i].v1->fX() + offset.X);
-			l.a.y = (lines[i].v1->fY() + offset.Y);
-			l.b.x = (lines[i].v2->fX() + offset.X);
-			l.b.y = (lines[i].v2->fY() + offset.Y);
+			l.a.x = (line.v1->fX() + offset.X);
+			l.a.y = (line.v1->fY() + offset.Y);
+			l.b.x = (line.v2->fX() + offset.X);
+			l.b.y = (line.v2->fY() + offset.Y);
 
 			if (am_rotate == 1 || (am_rotate == 2 && viewactive))
 			{
@@ -2429,9 +2427,9 @@ void AM_drawWalls (bool allmap)
 				AM_rotatePoint(&l.b.x, &l.b.y);
 			}
 
-			if (am_cheat != 0 || (lines[i].flags & ML_MAPPED))
+			if (am_cheat != 0 || (line.flags & ML_MAPPED))
 			{
-				if ((lines[i].flags & ML_DONTDRAW) && (am_cheat == 0 || am_cheat >= 4))
+				if ((line.flags & ML_DONTDRAW) && (am_cheat == 0 || am_cheat >= 4))
 				{
 					if (!am_showallenabled || CheckCheatmode(false))
 					{
@@ -2443,27 +2441,27 @@ void AM_drawWalls (bool allmap)
 				{
 					AM_drawMline(&l, AMColors.PortalColor);
 				}
-				else if (AM_CheckSecret(&lines[i]))
+				else if (AM_CheckSecret(&line))
 				{
 					// map secret sectors like Boom
 					AM_drawMline(&l, AMColors.SecretSectorColor);
 				}
-				else if (lines[i].flags & ML_SECRET)
+				else if (line.flags & ML_SECRET)
 				{ // secret door
-					if (am_cheat != 0 && lines[i].backsector != NULL)
+					if (am_cheat != 0 && line.backsector != NULL)
 						AM_drawMline(&l, AMColors.SecretWallColor);
 					else
 						AM_drawMline(&l, AMColors.WallColor);
 				}
-				else if (AM_isTeleportBoundary(lines[i]) && AMColors.isValid(AMColors.IntraTeleportColor))
+				else if (AM_isTeleportBoundary(line) && AMColors.isValid(AMColors.IntraTeleportColor))
 				{ // intra-level teleporters
 					AM_drawMline(&l, AMColors.IntraTeleportColor);
 				}
-				else if (AM_isExitBoundary(lines[i]) && AMColors.isValid(AMColors.InterTeleportColor))
+				else if (AM_isExitBoundary(line) && AMColors.isValid(AMColors.InterTeleportColor))
 				{ // inter-level/game-ending teleporters
 					AM_drawMline(&l, AMColors.InterTeleportColor);
 				}
-				else if (AM_isLockBoundary(lines[i], &lock))
+				else if (AM_isLockBoundary(line, &lock))
 				{
 					if (AMColors.displayLocks)
 					{
@@ -2483,25 +2481,25 @@ void AM_drawWalls (bool allmap)
 				}
 				else if (am_showtriggerlines
 					&& AMColors.isValid(AMColors.SpecialWallColor)
-					&& AM_isTriggerBoundary(lines[i]))
+					&& AM_isTriggerBoundary(line))
 				{
 					AM_drawMline(&l, AMColors.SpecialWallColor);	// wall with special non-door action the player can do
 				}
-				else if (lines[i].backsector == NULL)
+				else if (line.backsector == NULL)
 				{
 					AM_drawMline(&l, AMColors.WallColor);	// one-sided wall
 				}
-				else if (lines[i].backsector->floorplane
-					!= lines[i].frontsector->floorplane)
+				else if (line.backsector->floorplane
+					!= line.frontsector->floorplane)
 				{
 					AM_drawMline(&l, AMColors.FDWallColor); // floor level change
 				}
-				else if (lines[i].backsector->ceilingplane
-					!= lines[i].frontsector->ceilingplane)
+				else if (line.backsector->ceilingplane
+					!= line.frontsector->ceilingplane)
 				{
 					AM_drawMline(&l, AMColors.CDWallColor); // ceiling level change
 				}
-				else if (AM_Check3DFloors(&lines[i]))
+				else if (AM_Check3DFloors(&line))
 				{
 					AM_drawMline(&l, AMColors.EFWallColor); // Extra floor border
 				}
@@ -2512,7 +2510,7 @@ void AM_drawWalls (bool allmap)
 			}
 			else if (allmap)
 			{
-				if ((lines[i].flags & ML_DONTDRAW) && (am_cheat == 0 || am_cheat >= 4))
+				if ((line.flags & ML_DONTDRAW) && (am_cheat == 0 || am_cheat >= 4))
 				{
 					if (!am_showallenabled || CheckCheatmode(false))
 					{

src/bbannouncer.cpp

@@ -49,6 +49,7 @@
 #include "d_player.h"
 #include "g_level.h"
 #include "doomstat.h"
+#include "g_levellocals.h"
 
 // MACROS ------------------------------------------------------------------
 

src/c_cmds.cpp

@@ -72,6 +72,7 @@
 #include "r_utility.h"
 #include "r_data/r_interpolate.h"
 #include "c_functions.h"
+#include "g_levellocals.h"
 
 extern FILE *Logfile;
 extern bool insave;

src/c_console.cpp

@@ -67,6 +67,7 @@
 #include "d_player.h"
 #include "gstrings.h"
 #include "c_consolebuffer.h"
+#include "g_levellocals.h"
 
 #include "gi.h"
 

src/compatibility.cpp

@@ -52,6 +52,7 @@
 #include "p_tags.h"
 #include "r_state.h"
 #include "w_wad.h"
+#include "g_levellocals.h"
 
 // MACROS ------------------------------------------------------------------
 
@@ -475,9 +476,9 @@ void SetCompatibilityParams()
 			{
 				case CP_CLEARFLAGS:
 				{
-					if (CompatParams[i+1] < numlines)
+					if ((unsigned)CompatParams[i+1] < level.lines.Size())
 					{
-						line_t *line = &lines[CompatParams[i+1]];
+						line_t *line = &level.lines[CompatParams[i+1]];
 						line->flags &= ~CompatParams[i+2];
 					}
 					i+=3;
@@ -485,9 +486,9 @@ void SetCompatibilityParams()
 				}
 				case CP_SETFLAGS:
 				{
-					if (CompatParams[i+1] < numlines)
+					if ((unsigned)CompatParams[i+1] < level.lines.Size())
 					{
-						line_t *line = &lines[CompatParams[i+1]];
+						line_t *line = &level.lines[CompatParams[i+1]];
 						line->flags |= CompatParams[i+2];
 					}
 					i+=3;
@@ -495,9 +496,9 @@ void SetCompatibilityParams()
 				}
 				case CP_SETSPECIAL:
 				{
-					if (CompatParams[i+1] < numlines)
+					if ((unsigned)CompatParams[i+1] < level.lines.Size())
 					{
-						line_t *line = &lines[CompatParams[i+1]];
+						line_t *line = &level.lines[CompatParams[i+1]];
 						line->special = CompatParams[i+2];
 						for(int ii=0;ii<5;ii++)
 						{
@@ -509,9 +510,9 @@ void SetCompatibilityParams()
 				}
 				case CP_CLEARSPECIAL:
 				{
-					if (CompatParams[i+1] < numlines)
+					if ((unsigned)CompatParams[i+1] < level.lines.Size())
 					{
-						line_t *line = &lines[CompatParams[i+1]];
+						line_t *line = &level.lines[CompatParams[i+1]];
 						line->special = 0;
 						memset(line->args, 0, sizeof(line->args));
 					}
@@ -520,9 +521,9 @@ void SetCompatibilityParams()
 				}
 				case CP_SETACTIVATION:
 				{
-					if (CompatParams[i+1] < numlines)
+					if ((unsigned)CompatParams[i+1] < level.lines.Size())
 					{
-						line_t *line = &lines[CompatParams[i+1]];
+						line_t *line = &level.lines[CompatParams[i+1]];
 						line->activation = CompatParams[i+2];
 					}
 					i += 3;
@@ -552,9 +553,9 @@ void SetCompatibilityParams()
 				}
 				case CP_SETWALLYSCALE:
 				{
-					if (CompatParams[i+1] < numlines)
+					if ((unsigned)CompatParams[i+1] < level.lines.Size())
 					{
-						side_t *side = lines[CompatParams[i+1]].sidedef[CompatParams[i+2]];
+						side_t *side = level.lines[CompatParams[i+1]].sidedef[CompatParams[i+2]];
 						if (side != NULL)
 						{
 							side->SetTextureYScale(CompatParams[i+3], CompatParams[i+4] / 65536.);

src/d_main.cpp

@@ -109,6 +109,7 @@
 #include "p_local.h"
 #include "autosegs.h"
 #include "fragglescript/t_fs.h"
+#include "g_levellocals.h"
 
 EXTERN_CVAR(Bool, hud_althud)
 void DrawHUD();

src/d_net.cpp

@@ -63,6 +63,7 @@
 #include "r_utility.h"
 #include "a_keys.h"
 #include "intermission/intermission.h"
+#include "g_levellocals.h"
 
 EXTERN_CVAR (Int, disableautosave)
 EXTERN_CVAR (Int, autosavecount)

src/decallib.cpp

@@ -49,6 +49,7 @@
 #include "colormatcher.h"
 #include "b_bot.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 FDecalLib DecalLibrary;
 

src/dobject.cpp

@@ -49,6 +49,7 @@
 #include "dsectoreffect.h"
 #include "serializer.h"
 #include "virtual.h"
+#include "g_levellocals.h"
 
 //==========================================================================
 //

src/dobjgc.cpp

@@ -77,6 +77,7 @@
 #include "r_utility.h"
 #include "menu/menu.h"
 #include "intermission/intermission.h"
+#include "g_levellocals.h"
 
 // MACROS ------------------------------------------------------------------
 
@@ -709,15 +710,15 @@ size_t DSectorMarker::PropagateMark()
 			moretodo = true;
 		}
 	}
-	if (!moretodo && sides != NULL)
+	if (!moretodo && level.sides.Size() > 0)
 	{
-		for (i = 0; i < SIDEDEFSTEPSIZE && SideNum + i < numsides; ++i)
+		for (i = 0; i < SIDEDEFSTEPSIZE && SideNum + i < (int)level.sides.Size(); ++i)
 		{
-			side_t *side = &sides[SideNum + i];
+			side_t *side = &level.sides[SideNum + i];
 			for(int j=0;j<3;j++) GC::Mark(side->textures[j].interpolation);
 		}
 		marked += i * sizeof(side_t);
-		if (SideNum + i < numsides)
+		if (SideNum + i < (int)level.sides.Size())
 		{
 			SideNum += i;
 			moretodo = true;

src/doomstat.cpp

@@ -29,6 +29,7 @@
 #include "i_system.h"
 #include "g_level.h"
 #include "p_local.h"
+#include "g_levellocals.h"
 
 int SaveVersion;
 

src/edata.cpp

@@ -49,6 +49,7 @@
 #include "v_palette.h"
 #include "p_acs.h"
 #include "r_data/colormaps.h"
+#include "g_levellocals.h"
 
 
 struct FEDOptions : public FOptionalMapinfoData
@@ -705,7 +706,7 @@ void ProcessEDLinedef(line_t *ld, int recordnum)
 	ld->flags = (ld->flags&~fmask) | eld->flags;
 	ld->setAlpha(eld->alpha);
 	memcpy(ld->args, eld->args, sizeof(ld->args));
-	tagManager.AddLineID(int(ld - lines), eld->tag);
+	tagManager.AddLineID(ld->Index(), eld->tag);
 }
 
 void ProcessEDSector(sector_t *sec, int recordnum)
@@ -760,12 +761,12 @@ void ProcessEDSectors()
 	auto numsectors = level.sectors.Size();
 	int *sectorrecord = new int[numsectors];
 	memset(sectorrecord, -1, numsectors * sizeof(int));
-	for (int i = 0; i < numlines; i++)
+	for (auto &line : level.lines)
 	{
-		if (lines[i].special == Static_Init && lines[i].args[1] == Init_EDSector)
+		if (line.special == Static_Init && line.args[1] == Init_EDSector)
 		{
-			sectorrecord[lines[i].frontsector->Index()] = lines[i].args[0];
-			lines[i].special = 0;
+			sectorrecord[line.frontsector->Index()] = line.args[0];
+			line.special = 0;
 		}
 	}
 	for (unsigned i = 0; i < numsectors; i++)

src/fragglescript/t_cmd.cpp

@@ -48,6 +48,7 @@
 #include "g_level.h"
 #include "r_renderer.h"
 #include "d_player.h"
+#include "g_levellocals.h"
 
 //==========================================================================
 //

src/fragglescript/t_func.cpp

@@ -71,6 +71,7 @@
 #include "r_utility.h"
 #include "a_ammo.h"
 #include "math/cmath.h"
+#include "g_levellocals.h"
 
 static FRandom pr_script("FScript");
 
@@ -2171,7 +2172,7 @@ void FParser::SF_SetLineBlocking(void)
 			int i;
 			while ((i = itr.Next()) >= 0)
 			{
-				lines[i].flags = (lines[i].flags & ~(ML_BLOCKING | ML_BLOCKEVERYTHING)) | blocking;
+				level.lines[i].flags = (level.lines[i].flags & ~(ML_BLOCKING | ML_BLOCKEVERYTHING)) | blocking;
 			}
 		}
 	}
@@ -2194,7 +2195,7 @@ void FParser::SF_SetLineMonsterBlocking(void)
 		int i;
 		while ((i = itr.Next()) >= 0)
 		{
-			lines[i].flags = (lines[i].flags & ~ML_BLOCKMONSTERS) | blocking;
+			level.lines[i].flags = (level.lines[i].flags & ~ML_BLOCKMONSTERS) | blocking;
 		}
 	}
 }
@@ -2251,11 +2252,11 @@ void FParser::SF_SetLineTexture(void)
 			while ((i = itr.Next()) >= 0)
 			{
 				// bad sidedef, Hexen just SEGV'd here!
-				if (lines[i].sidedef[side] != NULL)
+				if (level.lines[i].sidedef[side] != NULL)
 				{
 					if (position >= 0 && position <= 2)
 					{
-						lines[i].sidedef[side]->SetTexture(position, texturenum);
+						level.lines[i].sidedef[side]->SetTexture(position, texturenum);
 					}
 				}
 			}
@@ -2270,7 +2271,7 @@ void FParser::SF_SetLineTexture(void)
 			FLineIdIterator itr(tag);
 			while ((i = itr.Next()) >= 0)
 			{ 
-				side_t *sided = lines[i].sidedef[side];
+				side_t *sided = level.lines[i].sidedef[side];
 				if(sided != NULL)
 				{ 
 					if(sections & 1) sided->SetTexture(side_t::top, picnum);
@@ -3363,19 +3364,19 @@ void FParser::SF_ObjState()
 void FParser::SF_LineFlag()
 {
 	line_t*  line;
-	int      linenum;
+	unsigned linenum;
 	int      flagnum;
 	
 	if (CheckArgs(2))
 	{
 		linenum = intvalue(t_argv[0]);
-		if(linenum < 0 || linenum > numlines)
+		if(linenum >= level.lines.Size())
 		{
 			script_error("LineFlag: Invalid line number.\n");
 			return;
 		}
 		
-		line = lines + linenum;
+		line = &level.lines[linenum];
 		
 		flagnum = intvalue(t_argv[1]);
 		if(flagnum < 0 || (flagnum > 8 && flagnum!=15))
@@ -3987,9 +3988,9 @@ void FParser::SF_SetLineTrigger()
 			mld.special = spec;
 			mld.tag = tag;
 			mld.flags = 0;
-			int f = lines[i].flags;
-			P_TranslateLineDef(&lines[i], &mld);
-			lines[i].flags = (lines[i].flags & (ML_MONSTERSCANACTIVATE | ML_REPEAT_SPECIAL | ML_SPAC_MASK | ML_FIRSTSIDEONLY)) |
+			int f = level.lines[i].flags;
+			P_TranslateLineDef(&level.lines[i], &mld);
+			level.lines[i].flags = (level.lines[i].flags & (ML_MONSTERSCANACTIVATE | ML_REPEAT_SPECIAL | ML_SPAC_MASK | ML_FIRSTSIDEONLY)) |
 				(f & ~(ML_MONSTERSCANACTIVATE | ML_REPEAT_SPECIAL | ML_SPAC_MASK | ML_FIRSTSIDEONLY));
 
 		}

src/fragglescript/t_load.cpp

@@ -43,6 +43,7 @@
 #include "cmdlib.h"
 #include "p_lnspec.h"
 #include "gi.h"
+#include "g_levellocals.h"
 #include "xlat/xlat.h"
 
 void T_Init();

src/fragglescript/t_script.cpp

@@ -55,6 +55,7 @@
 #include "doomerrors.h"
 #include "doomstat.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 //==========================================================================
 //

src/g_game.cpp

@@ -91,6 +91,7 @@
 #include <zlib.h>
 
 #include "g_hub.h"
+#include "g_levellocals.h"
 
 
 static FRandom pr_dmspawn ("DMSpawn");
@@ -2241,7 +2242,7 @@ void G_DoSaveGame (bool okForQuicksave, FString filename, const char *descriptio
 
 	// Do not even try, if we're not in a level. (Can happen after
 	// a demo finishes playback.)
-	if (lines == NULL || level.sectors.Size() == 0 || gamestate != GS_LEVEL)
+	if (level.lines.Size() == 0 || level.sectors.Size() == 0 || gamestate != GS_LEVEL)
 	{
 		return;
 	}

src/g_hub.cpp

@@ -44,6 +44,7 @@
 #include "gstrings.h"
 #include "wi_stuff.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 
 //==========================================================================

src/g_inventory/a_artifacts.cpp

@@ -22,6 +22,7 @@
 #include "serializer.h"
 #include "r_utility.h"
 #include "virtual.h"
+#include "g_levellocals.h"
 
 #include "r_data/colormaps.h"
 

src/g_inventory/a_pickups.cpp

@@ -22,6 +22,7 @@
 #include "virtual.h"
 #include "a_ammo.h"
 #include "c_functions.h"
+#include "g_levellocals.h"
 
 EXTERN_CVAR(Bool, sv_unlimited_pickup)
 

src/g_level.cpp

@@ -88,6 +88,7 @@
 #include "gi.h"
 
 #include "g_hub.h"
+#include "g_levellocals.h"
 
 #include <string.h>
 

src/g_level.h

@@ -376,77 +376,6 @@ struct level_info_t
 	}
 };
 
-struct FLevelLocals
-{
-	void Tick ();
-	void AddScroller (int secnum);
-
-	BYTE		md5[16];			// for savegame validation. If the MD5 does not match the savegame won't be loaded.
-	int			time;			// time in the hub
-	int			maptime;		// time in the map
-	int			totaltime;		// time in the game
-	int			starttime;
-	int			partime;
-	int			sucktime;
-
-	level_info_t *info;
-	int			cluster;
-	int			clusterflags;
-	int			levelnum;
-	int			lumpnum;
-	FString		LevelName;
-	FString		MapName;			// the lump name (E1M1, MAP01, etc)
-	FString		NextMap;			// go here when using the regular exit
-	FString		NextSecretMap;		// map to go to when used secret exit
-	EMapType	maptype;
-
-	TStaticArray<sector_t> sectors;
-
-	DWORD		flags;
-	DWORD		flags2;
-	DWORD		flags3;
-
-	DWORD		fadeto;					// The color the palette fades to (usually black)
-	DWORD		outsidefog;				// The fog for sectors with sky ceilings
-
-	FString		Music;
-	int			musicorder;
-	int			cdtrack;
-	unsigned int cdid;
-	FTextureID	skytexture1;
-	FTextureID	skytexture2;
-
-	float		skyspeed1;				// Scrolling speed of sky textures, in pixels per ms
-	float		skyspeed2;
-
-	int			total_secrets;
-	int			found_secrets;
-
-	int			total_items;
-	int			found_items;
-
-	int			total_monsters;
-	int			killed_monsters;
-
-	double		gravity;
-	double		aircontrol;
-	double		airfriction;
-	int			airsupply;
-	int			DefaultEnvironment;		// Default sound environment.
-
-	TArray<DVector2>	Scrolls;		// NULL if no DScrollers in this level
-
-	SBYTE		WallVertLight;			// Light diffs for vert/horiz walls
-	SBYTE		WallHorizLight;
-
-	bool		FromSnapshot;			// The current map was restored from a snapshot
-
-	double		teamdamage;
-
-	bool		IsJumpingAllowed() const;
-	bool		IsCrouchingAllowed() const;
-	bool		IsFreelookAllowed() const;
-};
 
 struct cluster_info_t
 {
@@ -476,8 +405,6 @@ struct cluster_info_t
 #define CLUSTER_LOOKUPCLUSTERNAME 0x00000080	// Cluster name is the name of a language string
 #define CLUSTER_ALLOWINTERMISSION 0x00000100  // Allow intermissions between levels in a hub.
 
-extern FLevelLocals level;
-
 extern TArray<level_info_t> wadlevelinfos;
 extern TArray<cluster_info_t> wadclusterinfos;
 

src/g_levellocals.h

@@ -0,0 +1,101 @@
+#pragma once
+
+#include "g_level.h"
+#include "r_defs.h"
+
+struct FLevelLocals
+{
+	void Tick ();
+	void AddScroller (int secnum);
+
+	BYTE		md5[16];			// for savegame validation. If the MD5 does not match the savegame won't be loaded.
+	int			time;			// time in the hub
+	int			maptime;		// time in the map
+	int			totaltime;		// time in the game
+	int			starttime;
+	int			partime;
+	int			sucktime;
+
+	level_info_t *info;
+	int			cluster;
+	int			clusterflags;
+	int			levelnum;
+	int			lumpnum;
+	FString		LevelName;
+	FString		MapName;			// the lump name (E1M1, MAP01, etc)
+	FString		NextMap;			// go here when using the regular exit
+	FString		NextSecretMap;		// map to go to when used secret exit
+	EMapType	maptype;
+
+	TStaticArray<vertex_t> vertexes;
+	TStaticArray<sector_t> sectors;
+	TStaticArray<line_t> lines;
+	TStaticArray<side_t> sides;
+
+	DWORD		flags;
+	DWORD		flags2;
+	DWORD		flags3;
+
+	DWORD		fadeto;					// The color the palette fades to (usually black)
+	DWORD		outsidefog;				// The fog for sectors with sky ceilings
+
+	FString		Music;
+	int			musicorder;
+	int			cdtrack;
+	unsigned int cdid;
+	FTextureID	skytexture1;
+	FTextureID	skytexture2;
+
+	float		skyspeed1;				// Scrolling speed of sky textures, in pixels per ms
+	float		skyspeed2;
+
+	int			total_secrets;
+	int			found_secrets;
+
+	int			total_items;
+	int			found_items;
+
+	int			total_monsters;
+	int			killed_monsters;
+
+	double		gravity;
+	double		aircontrol;
+	double		airfriction;
+	int			airsupply;
+	int			DefaultEnvironment;		// Default sound environment.
+
+	TArray<DVector2>	Scrolls;		// NULL if no DScrollers in this level
+
+	SBYTE		WallVertLight;			// Light diffs for vert/horiz walls
+	SBYTE		WallHorizLight;
+
+	bool		FromSnapshot;			// The current map was restored from a snapshot
+
+	double		teamdamage;
+
+	bool		IsJumpingAllowed() const;
+	bool		IsCrouchingAllowed() const;
+	bool		IsFreelookAllowed() const;
+};
+
+extern FLevelLocals level;
+
+inline int vertex_t::Index() const
+{
+	return int(this - &level.vertexes[0]);
+}
+
+inline int side_t::Index() const
+{
+	return int(this - &level.sides[0]);
+}
+
+inline int line_t::Index() const
+{
+	return int(this - &level.lines[0]);
+}
+
+inline int sector_t::Index() const 
+{ 
+	return int(this - &level.sectors[0]); 
+}

src/g_mapinfo.cpp

@@ -51,6 +51,7 @@
 #include "autosegs.h"
 #include "version.h"
 #include "v_text.h"
+#include "g_levellocals.h"
 
 TArray<cluster_info_t> wadclusterinfos;
 TArray<level_info_t> wadlevelinfos;

src/g_shared/a_decals.cpp

@@ -47,6 +47,7 @@
 #include "serializer.h"
 #include "doomdata.h"
 #include "r_state.h"
+#include "g_levellocals.h"
 
 static double DecalWidth, DecalLeft, DecalRight;
 static double SpreadZ;
@@ -415,7 +416,7 @@ void DBaseDecal::SpreadLeft (double r, vertex_t *v1, side_t *feelwall, F3DFloor
 		double x = v1->fX();
 		double y = v1->fY();
 
-		feelwall = &sides[feelwall->LeftSide];
+		feelwall = &level.sides[feelwall->LeftSide];
 		GetWallStuff (feelwall, v1, ldx, ldy);
 		double wallsize = Length (ldx, ldy);
 		r += DecalLeft;
@@ -455,7 +456,7 @@ void DBaseDecal::SpreadRight (double r, side_t *feelwall, double wallsize, F3DFl
 
 	while (r > wallsize && feelwall->RightSide != NO_SIDE)
 	{
-		feelwall = &sides[feelwall->RightSide];
+		feelwall = &level.sides[feelwall->RightSide];
 
 		side_t *nextwall = NextWall (feelwall);
 		if (nextwall != NULL && nextwall->LeftSide != NO_SIDE)

src/g_shared/a_fastprojectile.cpp

@@ -7,6 +7,7 @@
 #include "b_bot.h"
 #include "p_checkposition.h"
 #include "virtual.h"
+#include "g_levellocals.h"
 
 IMPLEMENT_CLASS(AFastProjectile, false, false)
 

src/g_shared/a_flashfader.cpp

@@ -2,6 +2,7 @@
 #include "g_level.h"
 #include "d_player.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 IMPLEMENT_CLASS(DFlashFader, false, true)
 

src/g_shared/a_lightning.cpp

@@ -10,6 +10,7 @@
 #include "g_level.h"
 #include "r_state.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 static FRandom pr_lightning ("Lightning");
 

src/g_shared/a_morph.cpp

@@ -16,6 +16,7 @@
 #include "d_player.h"
 #include "a_armor.h"
 #include "r_data/sprites.h"
+#include "g_levellocals.h"
 
 static FRandom pr_morphmonst ("MorphMonster");
 

src/g_shared/a_movingcamera.cpp

@@ -38,6 +38,7 @@
 #include "p_lnspec.h"
 #include "doomstat.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 /*
 == InterpolationPoint: node along a camera's path

src/g_shared/a_randomspawner.cpp

@@ -16,6 +16,7 @@
 #include "v_text.h"
 #include "doomstat.h"
 #include "doomdata.h"
+#include "g_levellocals.h"
 
 #define MAX_RANDOMSPAWNERS_RECURSION 32 // Should be largely more than enough, honestly.
 static FRandom pr_randomspawn("RandomSpawn");

src/g_shared/sbarinfo.cpp

@@ -60,6 +60,7 @@
 #include "version.h"
 #include "cmdlib.h"
 #include "a_ammo.h"
+#include "g_levellocals.h"
 
 #define ARTIFLASH_OFFSET (statusBar->invBarOffset+6)
 enum

src/g_shared/shared_hud.cpp

@@ -55,6 +55,7 @@
 #include "d_player.h"
 #include "r_utility.h"
 #include "cmdlib.h"
+#include "g_levellocals.h"
 
 #include <time.h>
 

src/g_shared/shared_sbar.cpp

@@ -55,6 +55,7 @@
 #include "gstrings.h"
 #include "r_utility.h"
 #include "cmdlib.h"
+#include "g_levellocals.h"
 
 #include "../version.h"
 

src/g_skill.cpp

@@ -43,6 +43,7 @@
 #include "v_font.h"
 #include "m_fixed.h"
 #include "gstrings.h"
+#include "g_levellocals.h"
 
 TArray<FSkillInfo> AllSkills;
 int DefaultSkill = -1;

src/g_strife/strife_sbar.cpp

@@ -19,6 +19,7 @@
 #include "colormatcher.h"
 #include "v_palette.h"
 #include "cmdlib.h"
+#include "g_levellocals.h"
 
 // Number of tics to move the popscreen up and down.
 #define POP_TIME (TICRATE/8)

src/gl/compatibility/gl_20.cpp

@@ -38,6 +38,7 @@
 #include "i_system.h"
 #include "v_text.h"
 #include "r_utility.h"
+#include "g_levellocals.h"
 #include "gl/dynlights/gl_dynlight.h"
 #include "gl/utility/gl_geometric.h"
 #include "gl/renderer/gl_renderer.h"

src/gl/data/gl_data.cpp

@@ -41,6 +41,7 @@
 #include "g_level.h"
 #include "doomstat.h"
 #include "d_player.h"
+#include "g_levellocals.h"
 
 #include "gl/system/gl_interface.h"
 #include "gl/renderer/gl_renderer.h"
@@ -547,7 +548,7 @@ CCMD(dumpgeometry)
 				{
 				Printf(PRINT_LOG, "      (%4.4f, %4.4f), (%4.4f, %4.4f) - seg %d, linedef %d, side %d", 
 					seg->v1->fX(), seg->v1->fY(), seg->v2->fX(), seg->v2->fY(),
-					int(seg-segs), int(seg->linedef-lines), seg->sidedef != seg->linedef->sidedef[0]);
+					int(seg-segs), seg->linedef->Index(), seg->sidedef != seg->linedef->sidedef[0]);
 				}
 				else
 				{

src/gl/data/gl_portaldata.cpp

@@ -38,6 +38,7 @@
 #include "gi.h"
 #include "g_level.h"
 #include "a_sharedglobal.h"
+#include "g_levellocals.h"
 
 #include "gl/renderer/gl_renderer.h"
 #include "gl/data/gl_data.h"

src/gl/data/gl_setup.cpp

@@ -40,6 +40,7 @@
 #include "gi.h"
 #include "p_setup.h"
 #include "g_level.h"
+#include "g_levellocals.h"
 
 #include "gl/renderer/gl_renderer.h"
 #include "gl/data/gl_data.h"
@@ -402,51 +403,50 @@ static void InitVertexData()
 
 	int i,j,k;
 
-	vt_sectorlists = new TArray<int>[numvertexes];
+	vt_sectorlists = new TArray<int>[level.vertexes.Size()];
 
 
-	for(i=0;i<numlines;i++)
+	for(auto &line : level.lines)
 	{
-		line_t * line = &lines[i];
-
 		for(j=0;j<2;j++)
 		{
-			vertex_t * v = j==0? line->v1 : line->v2;
+			vertex_t * v = j==0? line.v1 : line.v2;
 
 			for(k=0;k<2;k++)
 			{
-				sector_t * sec = k==0? line->frontsector : line->backsector;
+				sector_t * sec = k==0? line.frontsector : line.backsector;
 
 				if (sec)
 				{
 					extsector_t::xfloor &x = sec->e->XFloor;
 
-					AddToVertex(sec, vt_sectorlists[v-vertexes]);
-					if (sec->heightsec) AddToVertex(sec->heightsec, vt_sectorlists[v-vertexes]);
+					AddToVertex(sec, vt_sectorlists[v->Index()]);
+					if (sec->heightsec) AddToVertex(sec->heightsec, vt_sectorlists[v->Index()]);
 				}
 			}
 		}
 	}
 
-	for(i=0;i<numvertexes;i++)
+	for(i=0;i<level.vertexes.Size();i++)
 	{
+		auto vert = level.vertexes[i];
 		int cnt = vt_sectorlists[i].Size();
 
-		vertexes[i].dirty = true;
-		vertexes[i].numheights=0;
+		vert.dirty = true;
+		vert.numheights=0;
 		if (cnt>1)
 		{
-			vertexes[i].numsectors= cnt;
-			vertexes[i].sectors=new sector_t*[cnt];
-			vertexes[i].heightlist = new float[cnt*2];
+			vert.numsectors= cnt;
+			vert.sectors=new sector_t*[cnt];
+			vert.heightlist = new float[cnt*2];
 			for(int j=0;j<cnt;j++)
 			{
-				vertexes[i].sectors[j] = &level.sectors[vt_sectorlists[i][j]];
+				vert.sectors[j] = &level.sectors[vt_sectorlists[i][j]];
 			}
 		}
 		else
 		{
-			vertexes[i].numsectors=0;
+			vert.numsectors=0;
 		}
 	}
 
@@ -461,8 +461,8 @@ static void InitVertexData()
 
 static void GetSideVertices(int sdnum, DVector2 *v1, DVector2 *v2)
 {
-	line_t *ln = sides[sdnum].linedef;
-	if (ln->sidedef[0] == &sides[sdnum]) 
+	line_t *ln = level.sides[sdnum].linedef;
+	if (ln->sidedef[0] == &level.sides[sdnum])
 	{
 		*v1 = ln->v1->fPos();
 		*v2 = ln->v2->fPos();
@@ -489,54 +489,25 @@ static int segcmp(const void *a, const void *b)
 
 static void PrepareSegs()
 {
+	auto numsides = level.sides.Size();
 	int *segcount = new int[numsides];
 	int realsegs = 0;
 
 	// Get floatng point coordinates of vertices
-	for(int i = 0; i < numvertexes; i++)
+	for(auto &v : level.vertexes)
 	{
-		vertexes[i].dirty = true;
+		v.dirty = true;
 	}
 
 	// count the segs
 	memset(segcount, 0, numsides * sizeof(int));
 
-	// set up the extra data in case the map was loaded with regular nodes that might pass as GL nodes.
-	if (glsegextras == NULL)
-	{
-		for(int i=0;i<numsegs;i++)
-		{
-			segs[i].PartnerSeg = NULL;
-		}
-		for (int i=0; i<numsubsectors; i++)
-		{
-			int seg = int(subsectors[i].firstline-segs);
-			for(DWORD j=0;j<subsectors[i].numlines;j++)
-			{
-				segs[j+seg].Subsector = &subsectors[i];
-			}
-		}
-	}
-	else
-	{
-		for(int i=0;i<numsegs;i++)
-		{
-			seg_t *seg = &segs[i];
-
-			// Account for ZDoom space optimizations that cannot be done for GL
-			unsigned int partner= glsegextras[i].PartnerSeg;
-			if (partner < unsigned(numsegs))  seg->PartnerSeg = &segs[partner];
-			else seg->PartnerSeg = NULL;
-			seg->Subsector = glsegextras[i].Subsector;
-		}
-	}
-
 	for(int i=0;i<numsegs;i++)
 	{
 		seg_t *seg = &segs[i];
 
 		if (seg->sidedef == NULL) continue;	// miniseg
-		int sidenum = int(seg->sidedef - sides);
+		int sidenum = seg->sidedef->Index();
 
 		realsegs++;
 		segcount[sidenum]++;
@@ -550,13 +521,13 @@ static void PrepareSegs()
 	}
 
 	// allocate memory
-	sides[0].segs = new seg_t*[realsegs];
-	sides[0].numsegs = 0;
+	level.sides[0].segs = new seg_t*[realsegs];
+	level.sides[0].numsegs = 0;
 
 	for(int i = 1; i < numsides; i++)
 	{
-		sides[i].segs = sides[i-1].segs + segcount[i-1];
-		sides[i].numsegs = 0;
+		level.sides[i].segs = level.sides[i-1].segs + segcount[i-1];
+		level.sides[i].numsegs = 0;
 	}
 	delete [] segcount;
 
@@ -570,7 +541,7 @@ static void PrepareSegs()
 	// sort the segs
 	for(int i = 0; i < numsides; i++)
 	{
-		if (sides[i].numsegs > 1) qsort(sides[i].segs, sides[i].numsegs, sizeof(seg_t*), segcmp);
+		if (level.sides[i].numsegs > 1) qsort(level.sides[i].segs, level.sides[i].numsegs, sizeof(seg_t*), segcmp);
 	}
 }
 
@@ -586,8 +557,8 @@ void gl_PreprocessLevel()
 	PrepareSegs();
 	PrepareSectorData();
 	InitVertexData();
-	int *checkmap = new int[numvertexes];
-	memset(checkmap, -1, sizeof(int)*numvertexes);
+	int *checkmap = new int[level.vertexes.Size()];
+	memset(checkmap, -1, sizeof(int)*level.vertexes.Size());
 	for(auto &sec : level.sectors) 
 	{
 		int i = sec.sectornum;
@@ -598,21 +569,21 @@ void gl_PreprocessLevel()
 		{
 			if (l->sidedef[0]->Flags & WALLF_POLYOBJ) continue;	// don't bother with polyobjects
 
-			int vtnum1 = int(l->v1 - vertexes);
-			int vtnum2 = int(l->v2 - vertexes);
+			int vtnum1 = l->v1->Index();
+			int vtnum2 = l->v2->Index();
 
 			if (checkmap[vtnum1] < i)
 			{
 				checkmap[vtnum1] = i;
-				sec.e->vertices.Push(&vertexes[vtnum1]);
-				vertexes[vtnum1].dirty = true;
+				sec.e->vertices.Push(&level.vertexes[vtnum1]);
+				level.vertexes[vtnum1].dirty = true;
 			}
 
 			if (checkmap[vtnum2] < i)
 			{
 				checkmap[vtnum2] = i;
-				sec.e->vertices.Push(&vertexes[vtnum2]);
-				vertexes[vtnum2].dirty = true;
+				sec.e->vertices.Push(&level.vertexes[vtnum2]);
+				level.vertexes[vtnum2].dirty = true;
 			}
 		}
 	}
@@ -652,27 +623,24 @@ void gl_CleanLevelData()
 		mo=next;
 	}
 
-	if (vertexes != NULL)
+	for(auto &v : level.vertexes) if (v.numsectors > 0)
 	{
-		for(int i = 0; i < numvertexes; i++) if (vertexes[i].numsectors > 0)
+		if (v.sectors != nullptr)
 		{
-			if (vertexes[i].sectors != NULL)
-			{
-				delete [] vertexes[i].sectors;
-				vertexes[i].sectors = NULL;
-			}
-			if (vertexes[i].heightlist != NULL)
-			{
-				delete [] vertexes[i].heightlist;
-				vertexes[i].heightlist = NULL;
-			}
+			delete [] v.sectors;
+			v.sectors = nullptr;
+		}
+		if (v.heightlist != nullptr)
+		{
+			delete [] v.heightlist;
+			v.heightlist = nullptr;
 		}
 	}
 
-	if (sides && sides[0].segs)
+	if (level.sides.Size() > 0 && level.sides[0].segs)
 	{
-		delete [] sides[0].segs;
-		sides[0].segs = NULL;
+		delete [] level.sides[0].segs;
+		level.sides[0].segs = NULL;
 	}
 	if (level.sectors.Size() > 0 && level.sectors[0].subsectors) 
 	{
@@ -712,7 +680,7 @@ CCMD(listmapsections)
 		{
 			if (subsectors[j].mapsection == i)
 			{
-				Printf("Mapsection %d, sector %d, line %d\n", i, subsectors[j].render_sector->sectornum, int(subsectors[j].firstline->linedef-lines));
+				Printf("Mapsection %d, sector %d, line %d\n", i, subsectors[j].render_sector->Index(), subsectors[j].firstline->linedef->Index());
 				break;
 			}
 		}

src/gl/data/gl_vertexbuffer.cpp

@@ -31,6 +31,7 @@
 #include "r_state.h"
 #include "m_argv.h"
 #include "c_cvars.h"
+#include "g_levellocals.h"
 #include "gl/system/gl_interface.h"
 #include "gl/renderer/gl_renderer.h"
 #include "gl/shaders/gl_shader.h"

src/gl/dynlights/a_dynlight.cpp

@@ -71,6 +71,7 @@
 #include "portal.h"
 #include "doomstat.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 
 #include "gl/renderer/gl_renderer.h"

src/gl/dynlights/gl_dynlight.cpp

@@ -49,6 +49,7 @@
 #include "zstring.h"
 #include "d_dehacked.h"
 #include "v_text.h"
+#include "g_levellocals.h"
 
 
 #include "gl/dynlights/gl_dynlight.h"

src/gl/models/gl_models.cpp

@@ -37,6 +37,7 @@
 #include "g_level.h"
 #include "r_state.h"
 #include "d_player.h"
+#include "g_levellocals.h"
 //#include "resources/voxels.h"
 //#include "gl/gl_intern.h"
 

src/gl/renderer/gl_lightdata.cpp

@@ -38,6 +38,7 @@
 #include "p_local.h"
 #include "g_level.h"
 #include "r_sky.h"
+#include "g_levellocals.h"
 
 // externally settable lighting properties
 static float distfogtable[2][256];	// light to fog conversion table for black fog

src/gl/scene/gl_bsp.cpp

@@ -87,7 +87,7 @@ static sector_t *currentsector;
 static void AddLine (seg_t *seg, bool portalclip)
 {
 #ifdef _DEBUG
-	if (seg->linedef - lines == 38)
+	if (seg->linedef->Index() == 38)
 	{
 		int a = 0;
 	}

src/gl/scene/gl_drawinfo.cpp

@@ -32,6 +32,7 @@
 #include "r_utility.h"
 #include "r_state.h"
 #include "doomstat.h"
+#include "g_levellocals.h"
 
 #include "gl/system/gl_cvars.h"
 #include "gl/data/gl_data.h"

src/gl/scene/gl_flats.cpp

@@ -35,6 +35,7 @@
 #include "d_player.h"
 #include "portal.h"
 #include "templates.h"
+#include "g_levellocals.h"
 
 #include "gl/system/gl_interface.h"
 #include "gl/system/gl_cvars.h"

src/gl/scene/gl_renderhacks.cpp

@@ -30,7 +30,7 @@
 #include "r_defs.h"
 #include "r_sky.h"
 #include "g_level.h"
-
+#include "g_levellocals.h"
 
 #include "gl/renderer/gl_renderer.h"
 #include "gl/data/gl_data.h"

src/gl/scene/gl_scene.cpp

@@ -43,6 +43,7 @@
 #include "p_local.h"
 #include "gl/gl_functions.h"
 #include "serializer.h"
+#include "g_levellocals.h"
 
 #include "gl/dynlights/gl_lightbuffer.h"
 #include "gl/system/gl_interface.h"

src/gl/scene/gl_sky.cpp

@@ -28,6 +28,7 @@
 #include "r_utility.h"
 #include "doomdata.h"
 #include "portal.h"
+#include "g_levellocals.h"
 #include "gl/gl_functions.h"
 
 #include "gl/data/gl_data.h"
@@ -51,7 +52,7 @@ void GLSkyInfo::init(int sky1, PalEntry FadeColor)
 	memset(this, 0, sizeof(*this));
 	if ((sky1 & PL_SKYFLAT) && (sky1 & (PL_SKYFLAT - 1)))
 	{
-		const line_t *l = &lines[(sky1&(PL_SKYFLAT - 1)) - 1];
+		const line_t *l = &level.lines[(sky1&(PL_SKYFLAT - 1)) - 1];
 		const side_t *s = l->sidedef[0];
 		int pos;
 

src/gl/scene/gl_sprite.cpp

@@ -36,6 +36,7 @@
 #include "r_utility.h"
 #include "a_pickups.h"
 #include "d_player.h"
+#include "g_levellocals.h"
 
 #include "gl/system/gl_interface.h"
 #include "gl/system/gl_framebuffer.h"

src/gl/scene/gl_walls.cpp

@@ -33,6 +33,7 @@
 #include "p_maputl.h"
 #include "doomdata.h"
 #include "portal.h"
+#include "g_levellocals.h"
 
 #include "gl/system/gl_cvars.h"
 #include "gl/renderer/gl_lightdata.h"
@@ -326,7 +327,7 @@ void GLWall::SplitWall(sector_t * frontsector, bool translucent)
 	//::SplitWall.Clock();
 
 #ifdef _DEBUG
-	if (seg->linedef-lines==1)
+	if (seg->linedef->Index() == 1)
 	{
 		int a = 0;
 	}
@@ -1414,7 +1415,7 @@ void GLWall::Process(seg_t *seg, sector_t * frontsector, sector_t * backsector)
 	sector_t * segback;
 
 #ifdef _DEBUG
-	if (seg->linedef - lines < 4)
+	if (seg->linedef->Index() == 1)
 	{
 		int a = 0;
 	}
@@ -1547,7 +1548,7 @@ void GLWall::Process(seg_t *seg, sector_t * frontsector, sector_t * backsector)
 			zbottom[1] = zfloor[1];
 			PutPortal(PORTALTYPE_LINETOLINE);
 		}
-		else if (seg->linedef->portaltransferred > 0)
+		else if (seg->linedef->GetTransferredPortal())
 		{
 			SkyLine(frontsector, seg->linedef);
 		}

src/gl/scene/gl_weapon.cpp

@@ -32,6 +32,7 @@
 #include "doomstat.h"
 #include "d_player.h"
 #include "g_level.h"
+#include "g_levellocals.h"
 
 #include "gl/system/gl_interface.h"
 #include "gl/system/gl_cvars.h"

src/gl/utility/gl_clock.cpp

@@ -48,6 +48,7 @@
 #include "c_dispatch.h"
 #include "r_utility.h"
 #include "v_video.h"
+#include "g_levellocals.h"
 #include "gl/utility/gl_clock.h"
 #include "gl/utility/gl_convert.h"
 

src/hu_scores.cpp

@@ -50,6 +50,7 @@
 #include "gstrings.h"
 #include "d_net.h"
 #include "c_dispatch.h"
+#include "g_levellocals.h"
 
 // MACROS ------------------------------------------------------------------
 

src/intermission/intermission.cpp

@@ -51,6 +51,7 @@
 #include "p_conversation.h"
 #include "menu/menu.h"
 #include "d_net.h"
+#include "g_levellocals.h"
 
 FIntermissionDescriptorList IntermissionDescriptors;
 

src/m_cheat.cpp

@@ -49,6 +49,7 @@
 #include "a_morph.h"
 #include "a_armor.h"
 #include "a_ammo.h"
+#include "g_levellocals.h"
 
 // [RH] Actually handle the cheat. The cheat code in st_stuff.c now just
 // writes some bytes to the network data stream, and the network code

src/menu/readthis.cpp

@@ -37,6 +37,7 @@
 #include "v_video.h"
 #include "g_level.h"
 #include "gi.h"
+#include "g_levellocals.h"
 #include "textures/textures.h"
 
 class DReadThisMenu : public DMenu

src/nodebuild.h

@@ -209,10 +209,10 @@ public:
 		bool makeGLNodes);
 	~FNodeBuilder ();
 
-	void Extract (node_t *&nodes, int &nodeCount,
-		seg_t *&segs, glsegextra_t *&glsegextras, int &segCount,
+	void Extract(node_t *&nodes, int &nodeCount,
+		seg_t *&segs, int &segCount,
 		subsector_t *&ssecs, int &subCount,
-		vertex_t *&verts, int &vertCount);
+		TStaticArray<vertex_t> &vertexes);
 	const int *GetOldVertexTable();
 
 	// These are used for building sub-BSP trees for polyobjects.

src/nodebuild_extract.cpp

@@ -53,14 +53,14 @@
 #endif
 
 void FNodeBuilder::Extract (node_t *&outNodes, int &nodeCount,
-	seg_t *&outSegs, glsegextra_t *&outSegExtras, int &segCount,
+	seg_t *&outSegs, int &segCount,
 	subsector_t *&outSubs, int &subCount,
-	vertex_t *&outVerts, int &vertCount)
+	TStaticArray<vertex_t> &outVerts)
 {
 	int i;
 
-	vertCount = Vertices.Size ();
-	outVerts = new vertex_t[vertCount];
+	int vertCount = Vertices.Size ();
+	outVerts.Alloc(vertCount);
 
 	for (i = 0; i < vertCount; ++i)
 	{
@@ -109,14 +109,13 @@ void FNodeBuilder::Extract (node_t *&outNodes, int &nodeCount,
 
 		for (i = 0; i < subCount; ++i)
 		{
-			DWORD numsegs = CloseSubsector (segs, i, outVerts);
+			DWORD numsegs = CloseSubsector (segs, i, &outVerts[0]);
 			outSubs[i].numlines = numsegs;
 			outSubs[i].firstline = (seg_t *)(size_t)(segs.Size() - numsegs);
 		}
 
 		segCount = segs.Size ();
 		outSegs = new seg_t[segCount];
-		outSegExtras = new glsegextra_t[segCount];
 
 		for (i = 0; i < segCount; ++i)
 		{
@@ -124,11 +123,11 @@ void FNodeBuilder::Extract (node_t *&outNodes, int &nodeCount,
 
 			if (segs[i].Partner != DWORD_MAX)
 			{
-				outSegExtras[i].PartnerSeg = Segs[segs[i].Partner].storedseg;
+				outSegs[i].PartnerSeg = &outSegs[Segs[segs[i].Partner].storedseg];
 			}
 			else
 			{
-				outSegExtras[i].PartnerSeg = DWORD_MAX;
+				outSegs[i].PartnerSeg = nullptr;
 			}
 		}
 	}
@@ -137,7 +136,6 @@ void FNodeBuilder::Extract (node_t *&outNodes, int &nodeCount,
 		memcpy (outSubs, &Subsectors[0], subCount*sizeof(subsector_t));
 		segCount = Segs.Size ();
 		outSegs = new seg_t[segCount];
-		outSegExtras = NULL;
 		for (i = 0; i < segCount; ++i)
 		{
 			const FPrivSeg *org = &Segs[SegList[i].SegNum];
@@ -145,12 +143,13 @@ void FNodeBuilder::Extract (node_t *&outNodes, int &nodeCount,
 
 			D(Printf(PRINT_LOG, "Seg %d: v1(%d) -> v2(%d)\n", i, org->v1, org->v2));
 
-			out->v1 = outVerts + org->v1;
-			out->v2 = outVerts + org->v2;
+			out->v1 = &outVerts[org->v1];
+			out->v2 = &outVerts[org->v2];
 			out->backsector = org->backsector;
 			out->frontsector = org->frontsector;
 			out->linedef = Level.Lines + org->linedef;
 			out->sidedef = Level.Sides + org->sidedef;
+			out->PartnerSeg = nullptr;
 		}
 	}
 	for (i = 0; i < subCount; ++i)
@@ -162,8 +161,8 @@ void FNodeBuilder::Extract (node_t *&outNodes, int &nodeCount,
 
 	for (i = 0; i < Level.NumLines; ++i)
 	{
-		Level.Lines[i].v1 = outVerts + (size_t)Level.Lines[i].v1;
-		Level.Lines[i].v2 = outVerts + (size_t)Level.Lines[i].v2;
+		Level.Lines[i].v1 = &outVerts[(size_t)Level.Lines[i].v1];
+		Level.Lines[i].v2 = &outVerts[(size_t)Level.Lines[i].v2];
 	}
 }
 

src/nodebuild_utility.cpp

@@ -50,6 +50,7 @@
 #include "i_system.h"
 #include "po_man.h"
 #include "r_state.h"
+#include "g_levellocals.h"
 #include "math/cmath.h"
 
 static const int PO_LINE_START = 1;
@@ -186,7 +187,7 @@ int FNodeBuilder::CreateSeg (int linenum, int sidenum)
 	}
 	seg.linedef = linenum;
 	side_t *sd = Level.Lines[linenum].sidedef[sidenum];
-	seg.sidedef = sd != NULL? int(sd - sides) : int(NO_SIDE);
+	seg.sidedef = sd != NULL? sd->Index() : int(NO_SIDE);
 	seg.nextforvert = Vertices[seg.v1].segs;
 	seg.nextforvert2 = Vertices[seg.v2].segs2;
 

src/p_3dfloors.cpp

@@ -47,6 +47,7 @@
 #include "r_utility.h"
 #include "p_spec.h"
 #include "r_data/colormaps.h"
+#include "g_levellocals.h"
 
 EXTERN_CVAR(Int, vid_renderer)
 
@@ -850,16 +851,14 @@ void P_LineOpening_XFloors (FLineOpening &open, AActor * thing, const line_t *li
 void P_Spawn3DFloors (void)
 {
 	static int flagvals[] = {512, 2+512, 512+1024};
-	int i;
-	line_t * line;
 
-	for (i=0,line=lines;i<numlines;i++,line++)
+	for (auto &line : level.lines)
 	{
-		switch(line->special)
+		switch(line.special)
 		{
 		case ExtraFloor_LightOnly:
-			if (line->args[1] < 0 || line->args[1] > 2) line->args[1] = 0;
-			P_Set3DFloor(line, 3, flagvals[line->args[1]], 0);
+			if (line.args[1] < 0 || line.args[1] > 2) line.args[1] = 0;
+			P_Set3DFloor(&line, 3, flagvals[line.args[1]], 0);
 			break;
 
 		case Sector_Set3DFloor:
@@ -868,24 +867,24 @@ void P_Spawn3DFloors (void)
 			// In Doom format the translators can take full integers for the tag and the line ID always is the same as the tag.
 			if (level.maptype == MAPTYPE_HEXEN)	
 			{
-				if (line->args[1]&8)
+				if (line.args[1]&8)
 				{
-					tagManager.AddLineID(i, line->args[4]);
+					tagManager.AddLineID(line.Index(), line.args[4]);
 				}
 				else
 				{
-					line->args[0]+=256*line->args[4];
-					line->args[4]=0;
+					line.args[0]+=256*line.args[4];
+					line.args[4]=0;
 				}
 			}
-			P_Set3DFloor(line, line->args[1]&~8, line->args[2], line->args[3]);
+			P_Set3DFloor(&line, line.args[1]&~8, line.args[2], line.args[3]);
 			break;
 
 		default:
 			continue;
 		}
-		line->special=0;
-		line->args[0] = line->args[1] = line->args[2] = line->args[3] = line->args[4] = 0;
+		line.special=0;
+		line.args[0] = line.args[1] = line.args[2] = line.args[3] = line.args[4] = 0;
 	}
 	// kg3D - do it in software
 	for (auto &sec : level.sectors)

src/p_3dmidtex.cpp

@@ -41,6 +41,7 @@
 #include "p_terrain.h"
 #include "p_maputl.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 
 //============================================================================
@@ -121,10 +122,10 @@ void P_Attach3dMidtexLinesToSector(sector_t *sector, int lineid, int tag, bool c
 	extsector_t::midtex::plane &scrollplane = ceiling? sector->e->Midtex.Ceiling : sector->e->Midtex.Floor;
 
 	// Bit arrays that mark whether a line or sector is to be attached.
-	BYTE *found_lines = new BYTE[(numlines+7)/8];
+	BYTE *found_lines = new BYTE[(level.lines.Size()+7)/8];
 	BYTE *found_sectors = new BYTE[(level.sectors.Size()+7)/8];
 
-	memset(found_lines, 0, sizeof (BYTE) * ((numlines+7)/8));
+	memset(found_lines, 0, sizeof (BYTE) * ((level.lines.Size()+7)/8));
 	memset(found_sectors, 0, sizeof (BYTE) * ((level.sectors.Size()+7)/8));
 
 	// mark all lines and sectors that are already attached to this one
@@ -132,13 +133,13 @@ void P_Attach3dMidtexLinesToSector(sector_t *sector, int lineid, int tag, bool c
 	// from the marker arrays.
 	for (unsigned i=0; i < scrollplane.AttachedLines.Size(); i++)
 	{
-		int line = int(scrollplane.AttachedLines[i] - lines);
+		int line = scrollplane.AttachedLines[i]->Index();
 		found_lines[line>>3] |= 1 << (line&7);
 	}
 
 	for (unsigned i=0; i < scrollplane.AttachedSectors.Size(); i++)
 	{
-		int sec = scrollplane.AttachedSectors[i]->sectornum;
+		int sec = scrollplane.AttachedSectors[i]->Index();
 		found_sectors[sec>>3] |= 1 << (sec&7);
 	}
 
@@ -151,7 +152,7 @@ void P_Attach3dMidtexLinesToSector(sector_t *sector, int lineid, int tag, bool c
 		int line;
 		while ((line = itr.Next()) >= 0)
 		{
-			line_t *ln = &lines[line];
+			line_t *ln = &level.lines[line];
 
 			if (ln->frontsector == NULL || ln->backsector == NULL || !(ln->flags & ML_3DMIDTEX))
 			{
@@ -176,24 +177,25 @@ void P_Attach3dMidtexLinesToSector(sector_t *sector, int lineid, int tag, bool c
 					// Only consider two-sided lines with the 3DMIDTEX flag
 					continue;
 				}
-				int lineno = int(ln-lines);
-				found_lines[lineno>>3] |= 1 << (lineno&7);
+				int lineno = ln->Index();
+				found_lines[lineno >> 3] |= 1 << (lineno & 7);
 			}
 		}
 	}
 
 
-	for(int i=0; i < numlines; i++)
+	for(unsigned i=0; i < level.lines.Size(); i++)
 	{
 		if (found_lines[i>>3] & (1 << (i&7)))
 		{
-			scrollplane.AttachedLines.Push(&lines[i]);
+			auto &line = level.lines[i];
+			scrollplane.AttachedLines.Push(&line);
 
-			v = lines[i].frontsector->sectornum;
+			v = line.frontsector->Index();
 			assert(v < (int)level.sectors.Size());
 			found_sectors[v>>3] |= 1 << (v&7);
 
-			v = lines[i].backsector->sectornum;
+			v = line.backsector->Index();
 			assert(v < (int)level.sectors.Size());
 			found_sectors[v>>3] |= 1 << (v&7);
 		}

src/p_acs.cpp

@@ -86,6 +86,7 @@
 #include "a_armor.h"
 #include "a_ammo.h"
 #include "r_data/colormaps.h"
+#include "g_levellocals.h"
 
 extern FILE *Logfile;
 
@@ -3284,7 +3285,7 @@ void DLevelScript::SetLineTexture (int lineid, int side, int position, int name)
 	int linenum = -1;
 	const char *texname = FBehavior::StaticLookupString (name);
 
-	if (texname == NULL)
+	if (texname == nullptr)
 		return;
 
 	side = !!side;
@@ -3296,8 +3297,8 @@ void DLevelScript::SetLineTexture (int lineid, int side, int position, int name)
 	{
 		side_t *sidedef;
 
-		sidedef = lines[linenum].sidedef[side];
-		if (sidedef == NULL)
+		sidedef = level.lines[linenum].sidedef[side];
+		if (sidedef == nullptr)
 			continue;
 
 		switch (position)
@@ -3332,16 +3333,14 @@ void DLevelScript::ReplaceTextures (int fromnamei, int tonamei, int flags)
 		picnum1 = TexMan.GetTexture (fromname, FTexture::TEX_Wall, FTextureManager::TEXMAN_Overridable);
 		picnum2 = TexMan.GetTexture (toname, FTexture::TEX_Wall, FTextureManager::TEXMAN_Overridable);
 
-		for (int i = 0; i < numsides; ++i)
+		for (auto &side : level.sides)
 		{
-			side_t *wal = &sides[i];
-
 			for(int j=0;j<3;j++)
 			{
 				static BYTE bits[]={NOT_TOP, NOT_MIDDLE, NOT_BOTTOM};
-				if (!(flags & bits[j]) && wal->GetTexture(j) == picnum1)
+				if (!(flags & bits[j]) && side.GetTexture(j) == picnum1)
 				{
-					wal->SetTexture(j, picnum2);
+					side.SetTexture(j, picnum2);
 				}
 			}
 		}
@@ -4428,14 +4427,14 @@ int DLevelScript::SideFromID(int id, int side)
 	{
 		if (activationline == NULL) return -1;
 		if (activationline->sidedef[side] == NULL) return -1;
-		return activationline->sidedef[side]->Index;
+		return activationline->sidedef[side]->UDMFIndex;
 	}
 	else
 	{
 		int line = P_FindFirstLineFromID(id);
 		if (line == -1) return -1;
-		if (lines[line].sidedef[side] == NULL) return -1;
-		return lines[line].sidedef[side]->Index;
+		if (level.lines[line].sidedef[side] == NULL) return -1;
+		return level.lines[line].sidedef[side]->UDMFIndex;
 	}
 }
 
@@ -4444,7 +4443,7 @@ int DLevelScript::LineFromID(int id)
 	if (id == 0)
 	{
 		if (activationline == NULL) return -1;
-		return int(activationline - lines);
+		return activationline->Index();
 	}
 	else
 	{
@@ -5695,7 +5694,7 @@ doplaysound:			if (funcIndex == ACSF_PlayActorSound)
 				FLineIdIterator itr(args[0]);
 				while ((line = itr.Next()) >= 0)
 				{
-					lines[line].activation = args[1];
+					level.lines[line].activation = args[1];
 				}
 			}
 			break;
@@ -5704,7 +5703,7 @@ doplaysound:			if (funcIndex == ACSF_PlayActorSound)
 			if (argCount > 0)
 			{
 				int line = P_FindFirstLineFromID(args[0]);
-				return line >= 0 ? lines[line].activation : 0;
+				return line >= 0 ? level.lines[line].activation : 0;
 			}
 			break;
 
@@ -7742,7 +7741,7 @@ scriptwait:
 			if (activationline != NULL)
 			{
 				activationline->special = 0;
-				DPrintf(DMSG_SPAMMY, "Cleared line special on line %d\n", (int)(activationline - lines));
+				DPrintf(DMSG_SPAMMY, "Cleared line special on line %d\n", activationline->Index());
 			}
 			break;
 
@@ -8307,32 +8306,33 @@ scriptwait:
 
 		case PCD_SETLINEBLOCKING:
 			{
-				int line;
+				int lineno;
 
 				FLineIdIterator itr(STACK(2));
-				while ((line = itr.Next()) >= 0)
+				while ((lineno = itr.Next()) >= 0)
 				{
+					auto &line = level.lines[lineno];
 					switch (STACK(1))
 					{
 					case BLOCK_NOTHING:
-						lines[line].flags &= ~(ML_BLOCKING|ML_BLOCKEVERYTHING|ML_RAILING|ML_BLOCK_PLAYERS);
+						line.flags &= ~(ML_BLOCKING|ML_BLOCKEVERYTHING|ML_RAILING|ML_BLOCK_PLAYERS);
 						break;
 					case BLOCK_CREATURES:
 					default:
-						lines[line].flags &= ~(ML_BLOCKEVERYTHING|ML_RAILING|ML_BLOCK_PLAYERS);
-						lines[line].flags |= ML_BLOCKING;
+						line.flags &= ~(ML_BLOCKEVERYTHING|ML_RAILING|ML_BLOCK_PLAYERS);
+						line.flags |= ML_BLOCKING;
 						break;
 					case BLOCK_EVERYTHING:
-						lines[line].flags &= ~(ML_RAILING|ML_BLOCK_PLAYERS);
-						lines[line].flags |= ML_BLOCKING|ML_BLOCKEVERYTHING;
+						line.flags &= ~(ML_RAILING|ML_BLOCK_PLAYERS);
+						line.flags |= ML_BLOCKING|ML_BLOCKEVERYTHING;
 						break;
 					case BLOCK_RAILING:
-						lines[line].flags &= ~(ML_BLOCKEVERYTHING|ML_BLOCK_PLAYERS);
-						lines[line].flags |= ML_RAILING|ML_BLOCKING;
+						line.flags &= ~(ML_BLOCKEVERYTHING|ML_BLOCK_PLAYERS);
+						line.flags |= ML_RAILING|ML_BLOCKING;
 						break;
 					case BLOCK_PLAYERS:
-						lines[line].flags &= ~(ML_BLOCKEVERYTHING|ML_BLOCKING|ML_RAILING);
-						lines[line].flags |= ML_BLOCK_PLAYERS;
+						line.flags &= ~(ML_BLOCKEVERYTHING|ML_BLOCKING|ML_RAILING);
+						line.flags |= ML_BLOCK_PLAYERS;
 						break;
 					}
 				}
@@ -8349,9 +8349,9 @@ scriptwait:
 				while ((line = itr.Next()) >= 0)
 				{
 					if (STACK(1))
-						lines[line].flags |= ML_BLOCKMONSTERS;
+						level.lines[line].flags |= ML_BLOCKMONSTERS;
 					else
-						lines[line].flags &= ~ML_BLOCKMONSTERS;
+						level.lines[line].flags &= ~ML_BLOCKMONSTERS;
 				}
 
 				sp -= 2;
@@ -8374,7 +8374,7 @@ scriptwait:
 				FLineIdIterator itr(STACK(7));
 				while ((linenum = itr.Next()) >= 0)
 				{
-					line_t *line = &lines[linenum];
+					line_t *line = &level.lines[linenum];
 					line->special = specnum;
 					line->args[0] = arg0;
 					line->args[1] = STACK(4);

src/p_actionfunctions.cpp

@@ -80,6 +80,7 @@
 #include "math/cmath.h"
 #include "a_armor.h"
 #include "a_health.h"
+#include "g_levellocals.h"
 
 AActor *SingleActorFromTID(int tid, AActor *defactor);
 

src/p_buildmap.cpp

@@ -19,6 +19,7 @@
 #include "gi.h"
 #include "p_spec.h"
 
+#if 0
 // MACROS ------------------------------------------------------------------
 
 //#define SHADE2LIGHT(s) (160-2*(s))
@@ -487,7 +488,7 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 	// Setting numvertexes to the same as numwalls is overly conservative,
 	// but the extra vertices will be removed during the BSP building pass.
 	numsides = numvertexes = numwalls;
-	numlines = 0;
+	int numlines = 0;
 
 	sides = new side_t[numsides];
 	memset (sides, 0, numsides*sizeof(side_t));
@@ -562,8 +563,8 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 	}
 
 	// Set line properties that Doom doesn't store per-sidedef
-	lines = new line_t[numlines];
-	memset (lines, 0, numlines*sizeof(line_t));
+	level.lines.Alloc(numlines);
+	memset (&level.lines[0], 0, numlines*sizeof(line_t));
 
 	for (i = 0, j = -1; i < numwalls; ++i)
 	{
@@ -573,6 +574,7 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 		}
 
 		j = int(intptr_t(sides[i].linedef));
+		auto &lines = level.lines;
 		lines[j].sidedef[0] = (side_t*)(intptr_t)i;
 		lines[j].sidedef[1] = (side_t*)(intptr_t)walls[i].nextwall;
 		lines[j].v1 = FindVertex (walls[i].x, walls[i].y);
@@ -654,8 +656,8 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 			slope.z[0] = slope.z[1] = slope.z[2] = -bsec->ceilingZ;
 			CalcPlane (slope, sec.ceilingplane);
 		}
-		int linenum = int(intptr_t(sides[bsec->wallptr].linedef));
-		int sidenum = int(intptr_t(lines[linenum].sidedef[1]));
+		int linenum = sides[bsec->wallptr].linedef->Index();
+		int sidenum = int(intptr_t(level.lines[linenum].sidedef[1] - sides));
 		if (bsec->floorstat & 64)
 		{ // floor is aligned to first wall
 			P_AlignFlat (linenum, sidenum == bsec->wallptr, 0);
@@ -667,8 +669,8 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 	}
 	for (i = 0; i < numlines; i++)
 	{
-		intptr_t front = intptr_t(lines[i].sidedef[0]);
-		intptr_t back = intptr_t(lines[i].sidedef[1]);
+		intptr_t front = intptr_t(level.lines[i].sidedef[0]-sides);
+		intptr_t back = intptr_t(level.lines[i].sidedef[1]-sides);
 		lines[i].sidedef[0] = front >= 0 ? &sides[front] : NULL;
 		lines[i].sidedef[1] = back >= 0 ? &sides[back] : NULL;
 	}
@@ -851,6 +853,7 @@ static void Decrypt (void *to_, const void *from_, int len, int key)
 	}
 }
 
+#endif
 //==========================================================================
 //
 // Just an actor to make the Build sprites show up. It doesn't do anything
@@ -892,3 +895,4 @@ void ACustomSprite::BeginPlay ()
 	// set face/wall/floor flags
 	renderflags |= ActorRenderFlags::FromInt (((cstat >> 4) & 3) << 12);
 }
+

src/p_ceiling.cpp

@@ -31,6 +31,7 @@
 #include "gi.h"
 #include "serializer.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 //============================================================================
 //

src/p_conversation.cpp

@@ -60,6 +60,7 @@
 #include "r_utility.h"
 #include "p_local.h"
 #include "menu/menu.h"
+#include "g_levellocals.h"
 
 // The conversations as they exist inside a SCRIPTxx lump.
 struct Response

src/p_doors.cpp

@@ -38,6 +38,7 @@
 #include "serializer.h"
 #include "d_player.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 //============================================================================
 //

src/p_effect.cpp

@@ -53,6 +53,7 @@
 #include "colormatcher.h"
 #include "d_player.h"
 #include "r_utility.h"
+#include "g_levellocals.h"
 
 CVAR (Int, cl_rockettrails, 1, CVAR_ARCHIVE);
 CVAR (Bool, r_rail_smartspiral, 0, CVAR_ARCHIVE);
@@ -272,7 +273,7 @@ void P_ThinkParticles ()
 		auto oldtrans = particle->alpha;
 		particle->alpha -= particle->fadestep;
 		particle->size += particle->sizestep;
-		if (oldtrans < particle->alpha || --particle->ttl <= 0 || (particle->size <= 0))
+		if (particle->alpha <= 0 || oldtrans < particle->alpha || --particle->ttl <= 0 || (particle->size <= 0))
 		{ // The particle has expired, so free it
 			memset (particle, 0, sizeof(particle_t));
 			if (prev)

src/p_enemy.cpp

@@ -52,6 +52,7 @@
 #include "p_checkposition.h"
 #include "math/cmath.h"
 #include "a_ammo.h"
+#include "g_levellocals.h"
 
 #include "gi.h"
 

src/p_floor.cpp

@@ -32,6 +32,7 @@
 #include "p_3dmidtex.h"
 #include "p_spec.h"
 #include "r_data/r_interpolate.h"
+#include "g_levellocals.h"
 
 //==========================================================================
 //

src/p_glnodes.cpp

@@ -67,6 +67,7 @@
 #include "m_misc.h"
 #include "r_utility.h"
 #include "cmdlib.h"
+#include "g_levellocals.h"
 
 void P_GetPolySpots (MapData * lump, TArray<FNodeBuilder::FPolyStart> &spots, TArray<FNodeBuilder::FPolyStart> &anchors);
 
@@ -129,6 +130,7 @@ struct gl5_mapnode_t
 
 static int CheckForMissingSegs()
 {
+	auto numsides = level.sides.Size();
 	double *added_seglen = new double[numsides];
 	int missing = 0;
 
@@ -141,13 +143,13 @@ static int CheckForMissingSegs()
 		{
 			// check all the segs and calculate the length they occupy on their sidedef
 			DVector2 vec1(seg->v2->fX() - seg->v1->fX(), seg->v2->fY() - seg->v1->fY());
-			added_seglen[seg->sidedef - sides] += vec1.Length();
+			added_seglen[seg->sidedef->Index()] += vec1.Length();
 		}
 	}
 
-	for(int i=0;i<numsides;i++)
+	for(unsigned i=0;i<numsides;i++)
 	{
-		double linelen = sides[i].linedef->Delta().Length();
+		double linelen = level.sides[i].linedef->Delta().Length();
 		missing += (added_seglen[i] < linelen - 1.);
 	}
 
@@ -222,7 +224,7 @@ static bool LoadGLVertexes(FileReader * lump)
 	BYTE *gldata;
 	int                 i;
 
-	firstglvertex = numvertexes;
+	firstglvertex = level.vertexes.Size();
 	
 	int gllen=lump->GetLength();
 
@@ -247,23 +249,23 @@ static bool LoadGLVertexes(FileReader * lump)
 	}
 	else format5=false;
 
-	mapglvertex_t*	mgl;
+	mapglvertex_t*	mgl = (mapglvertex_t *)(gldata + GL_VERT_OFFSET);
+	unsigned numvertexes = firstglvertex +  (gllen - GL_VERT_OFFSET)/sizeof(mapglvertex_t);
 
-	vertex_t * oldvertexes = vertexes;
-	numvertexes += (gllen - GL_VERT_OFFSET)/sizeof(mapglvertex_t);
-	vertexes	 = new vertex_t[numvertexes];
-	mgl			 = (mapglvertex_t *) (gldata + GL_VERT_OFFSET);	
+	TStaticArray<vertex_t> oldvertexes = std::move(level.vertexes);
+	level.vertexes.Alloc(numvertexes);
 
-	memcpy(vertexes, oldvertexes, firstglvertex * sizeof(vertex_t));
-	for(i=0;i<numlines;i++)
+	memcpy(&level.vertexes[0], &oldvertexes[0], firstglvertex * sizeof(vertex_t));
+	for(auto &line : level.lines)
 	{
-		lines[i].v1 = vertexes + (lines[i].v1 - oldvertexes);
-		lines[i].v2 = vertexes + (lines[i].v2 - oldvertexes);
+		// Remap vertex pointers in linedefs
+		line.v1 = &level.vertexes[line.v1 - &oldvertexes[0]];
+		line.v2 = &level.vertexes[line.v2 - &oldvertexes[0]];
 	}
 
-	for (i = firstglvertex; i < numvertexes; i++)
+	for (i = firstglvertex; i < (int)numvertexes; i++)
 	{
-		vertexes[i].set(LittleLong(mgl->x)/65536., LittleLong(mgl->y)/65536.);
+		level.vertexes[i].set(LittleLong(mgl->x)/65536., LittleLong(mgl->y)/65536.);
 		mgl++;
 	}
 	delete[] gldata;
@@ -317,18 +319,16 @@ static bool LoadGLSegs(FileReader * lump)
 			numsegs/=sizeof(glseg_t);
 			segs = new seg_t[numsegs];
 			memset(segs,0,sizeof(seg_t)*numsegs);
-			glsegextras = new glsegextra_t[numsegs];
 			
 			glseg_t * ml = (glseg_t*)data;
 			for(i = 0; i < numsegs; i++)
 			{							// check for gl-vertices
-				segs[i].v1 = &vertexes[checkGLVertex(LittleShort(ml->v1))];
-				segs[i].v2 = &vertexes[checkGLVertex(LittleShort(ml->v2))];
-				
-				glsegextras[i].PartnerSeg = ml->partner == 0xFFFF ? DWORD_MAX : LittleShort(ml->partner);
+				segs[i].v1 = &level.vertexes[checkGLVertex(LittleShort(ml->v1))];
+				segs[i].v2 = &level.vertexes[checkGLVertex(LittleShort(ml->v2))];
+				segs[i].PartnerSeg = ml->partner == 0xFFFF ? nullptr : &segs[LittleShort(ml->partner)];
 				if(ml->linedef != 0xffff)
 				{
-					ldef = &lines[LittleShort(ml->linedef)];
+					ldef = &level.lines[LittleShort(ml->linedef)];
 					segs[i].linedef = ldef;
 	
 					
@@ -370,19 +370,17 @@ static bool LoadGLSegs(FileReader * lump)
 			numsegs/=sizeof(glseg3_t);
 			segs = new seg_t[numsegs];
 			memset(segs,0,sizeof(seg_t)*numsegs);
-			glsegextras = new glsegextra_t[numsegs];
 			
 			glseg3_t * ml = (glseg3_t*)(data+ (format5? 0:4));
 			for(i = 0; i < numsegs; i++)
 			{							// check for gl-vertices
-				segs[i].v1 = &vertexes[checkGLVertex3(LittleLong(ml->v1))];
-				segs[i].v2 = &vertexes[checkGLVertex3(LittleLong(ml->v2))];
-				
-				glsegextras[i].PartnerSeg = LittleLong(ml->partner);
+				segs[i].v1 = &level.vertexes[checkGLVertex3(LittleLong(ml->v1))];
+				segs[i].v2 = &level.vertexes[checkGLVertex3(LittleLong(ml->v2))];
+				segs[i].PartnerSeg = LittleLong(ml->partner) == 0xffffffffu? nullptr : &segs[LittleLong(ml->partner)];
 	
 				if(ml->linedef != 0xffff) // skip minisegs 
 				{
-					ldef = &lines[LittleLong(ml->linedef)];
+					ldef = &level.lines[LittleLong(ml->linedef)];
 					segs[i].linedef = ldef;
 	
 					
@@ -1000,18 +998,18 @@ bool P_CheckNodes(MapData * map, bool rebuilt, int buildtime)
 			P_GetPolySpots (map, polyspots, anchors);
 			FNodeBuilder::FLevel leveldata =
 			{
-				vertexes, numvertexes,
-				sides, numsides,
-				lines, numlines,
+				&level.vertexes[0], (int)level.vertexes.Size(),
+				&level.sides[0], (int)level.sides.Size(),
+				&level.lines[0], (int)level.lines.Size(),
 				0, 0, 0, 0
 			};
 			leveldata.FindMapBounds ();
 			FNodeBuilder builder (leveldata, polyspots, anchors, true);
-			delete[] vertexes;
+			
 			builder.Extract (nodes, numnodes,
-				segs, glsegextras, numsegs,
+				segs, numsegs,
 				subsectors, numsubsectors,
-				vertexes, numvertexes);
+				level.vertexes);
 			endTime = I_FPSTime ();
 			DPrintf (DMSG_NOTIFY, "BSP generation took %.3f sec (%d segs)\n", (endTime - startTime) * 0.001, numsegs);
 			buildtime = endTime - startTime;
@@ -1093,11 +1091,11 @@ static void CreateCachedNodes(MapData *map)
 	MemFile ZNodes;
 
 	WriteLong(ZNodes, 0);
-	WriteLong(ZNodes, numvertexes);
-	for(int i=0;i<numvertexes;i++)
+	WriteLong(ZNodes, level.vertexes.Size());
+	for(auto &vert : level.vertexes)
 	{
-		WriteLong(ZNodes, vertexes[i].fixX());
-		WriteLong(ZNodes, vertexes[i].fixY());
+		WriteLong(ZNodes, vert.fixX());
+		WriteLong(ZNodes, vert.fixY());
 	}
 
 	WriteLong(ZNodes, numsubsectors);
@@ -1109,12 +1107,11 @@ static void CreateCachedNodes(MapData *map)
 	WriteLong(ZNodes, numsegs);
 	for(int i=0;i<numsegs;i++)
 	{
-		WriteLong(ZNodes, DWORD(segs[i].v1 - vertexes));
-		if (glsegextras != NULL) WriteLong(ZNodes, DWORD(glsegextras[i].PartnerSeg));
-		else WriteLong(ZNodes, 0);
+		WriteLong(ZNodes, segs[i].v1->Index());
+		WriteLong(ZNodes, segs[i].PartnerSeg == nullptr? 0xffffffffu : DWORD(segs[i].PartnerSeg - segs));
 		if (segs[i].linedef)
 		{
-			WriteLong(ZNodes, DWORD(segs[i].linedef - lines));
+			WriteLong(ZNodes, DWORD(segs[i].linedef->Index()));
 			WriteByte(ZNodes, segs[i].sidedef == segs[i].linedef->sidedef[0]? 0:1);
 		}
 		else
@@ -1156,7 +1153,7 @@ static void CreateCachedNodes(MapData *map)
 
 	uLongf outlen = ZNodes.Size();
 	BYTE *compressed;
-	int offset = numlines * 8 + 12 + 16;
+	int offset = level.lines.Size() * 8 + 12 + 16;
 	int r;
 	do
 	{
@@ -1171,13 +1168,13 @@ static void CreateCachedNodes(MapData *map)
 	while (r == Z_BUF_ERROR);
 
 	memcpy(compressed, "CACH", 4);
-	DWORD len = LittleLong(numlines);
+	DWORD len = LittleLong(level.lines.Size());
 	memcpy(compressed+4, &len, 4);
 	map->GetChecksum(compressed+8);
-	for(int i=0;i<numlines;i++)
+	for (unsigned i = 0; i < level.lines.Size(); i++)
 	{
-		DWORD ndx[2] = {LittleLong(DWORD(lines[i].v1 - vertexes)), LittleLong(DWORD(lines[i].v2 - vertexes)) };
-		memcpy(compressed+8+16+8*i, ndx, 8);
+		DWORD ndx[2] = { LittleLong(DWORD(level.lines[i].v1->Index())), LittleLong(DWORD(level.lines[i].v2->Index())) };
+		memcpy(compressed + 8 + 16 + 8 * i, ndx, 8);
 	}
 	memcpy(compressed + offset - 4, "ZGL3", 4);
 
@@ -1219,7 +1216,7 @@ static bool CheckCachedNodes(MapData *map)
 
 	if (fread(&numlin, 4, 1, f) != 1) goto errorout; 
 	numlin = LittleLong(numlin);
-	if ((int)numlin != numlines) goto errorout;
+	if (numlin != level.lines.Size()) goto errorout;
 
 	if (fread(md5, 1, 16, f) != 16) goto errorout;
 	map->GetChecksum(md5map);
@@ -1261,10 +1258,11 @@ static bool CheckCachedNodes(MapData *map)
 		goto errorout;
 	}
 
-	for(int i=0;i<numlines;i++)
+	for(auto &line : level.lines)
 	{
-		lines[i].v1 = &vertexes[LittleLong(verts[i*2])];
-		lines[i].v2 = &vertexes[LittleLong(verts[i*2+1])];
+		int i = line.Index();
+		line.v1 = &level.vertexes[LittleLong(verts[i*2])];
+		line.v2 = &level.vertexes[LittleLong(verts[i*2+1])];
 	}
 	delete [] verts;
 
@@ -1437,40 +1435,32 @@ void P_SetRenderSector()
 #endif
 
 	// Check for incorrect partner seg info so that the following code does not crash.
-	if (glsegextras == NULL)
+
+	for (i = 0; i < numsegs; i++)
 	{
-		// This can be normal nodes, mistakenly identified as GL nodes so we must fill
-		// in the missing pieces differently.
-
-		for (i = 0; i < numsubsectors; i++)
+		auto p = segs[i].PartnerSeg;
+		if (p != nullptr)
 		{
-			ss = &subsectors[i];
-			ss->render_sector = ss->sector;
-		}
-		return;
-	}
+			int partner = (int)(p - segs);
 
-	for(i=0;i<numsegs;i++)
-	{
-		int partner = (int)glsegextras[i].PartnerSeg;
+			if (partner < 0 || partner >= numsegs)
+			{
+				segs[i].PartnerSeg = nullptr;
+			}
 
-		if (partner<0 || partner>=numsegs/*eh? || &segs[partner]!=glsegextras[i].PartnerSeg*/)
-		{
-			glsegextras[i].PartnerSeg=DWORD_MAX;
+			// glbsp creates such incorrect references for Strife.
+			if (segs[i].linedef && segs[i].PartnerSeg != nullptr && !segs[i].PartnerSeg->linedef)
+			{
+				segs[i].PartnerSeg = segs[i].PartnerSeg->PartnerSeg = nullptr;
+			}
 		}
 
-		// glbsp creates such incorrect references for Strife.
-		if (segs[i].linedef && glsegextras[i].PartnerSeg != DWORD_MAX && !segs[glsegextras[i].PartnerSeg].linedef)
+		for (i = 0; i < numsegs; i++)
 		{
-			glsegextras[i].PartnerSeg = glsegextras[glsegextras[i].PartnerSeg].PartnerSeg = DWORD_MAX;
-		}
-	}
-
-	for(i=0;i<numsegs;i++)
-	{
-		if (glsegextras[i].PartnerSeg != DWORD_MAX && glsegextras[glsegextras[i].PartnerSeg].PartnerSeg!=(DWORD)i)
-		{
-			glsegextras[i].PartnerSeg=DWORD_MAX;
+			if (segs[i].PartnerSeg != nullptr && segs[i].PartnerSeg->PartnerSeg != &segs[i])
+			{
+				segs[i].PartnerSeg = nullptr;
+			}
 		}
 	}
 
@@ -1498,7 +1488,7 @@ void P_SetRenderSector()
 		seg = ss->firstline;
 		for(j=0; j<ss->numlines; j++)
 		{
-			if(seg->sidedef && (glsegextras[seg - segs].PartnerSeg == DWORD_MAX || seg->sidedef->sector!=segs[glsegextras[seg - segs].PartnerSeg].sidedef->sector))
+			if(seg->sidedef && (seg->PartnerSeg == nullptr || seg->sidedef->sector!=seg->PartnerSeg->sidedef->sector))
 			{
 				ss->render_sector = seg->sidedef->sector;
 				break;
@@ -1522,15 +1512,14 @@ void P_SetRenderSector()
 			
 			for(j=0; j<ss->numlines; j++)
 			{
-				DWORD partner = glsegextras[seg - segs].PartnerSeg;
-				if (partner != DWORD_MAX && glsegextras[partner].Subsector)
+				if (seg->PartnerSeg != nullptr && seg->PartnerSeg->Subsector)
 				{
-					sector_t * backsec = glsegextras[partner].Subsector->render_sector;
+					sector_t * backsec = seg->PartnerSeg->Subsector->render_sector;
 					if (backsec)
 					{
-						ss->render_sector=backsec;
+						ss->render_sector = backsec;
 						undetermined.Delete(i);
-						deleted=1;
+						deleted = 1;
 						break;
 					}
 				}

src/p_interaction.cpp

@@ -60,6 +60,7 @@
 #include "a_morph.h"
 #include "virtual.h"
 #include "a_health.h"
+#include "g_levellocals.h"
 
 static FRandom pr_obituary ("Obituary");
 static FRandom pr_botrespawn ("BotRespawn");

src/p_lights.cpp

@@ -32,6 +32,7 @@
 #include "p_lnspec.h"
 #include "doomstat.h"
 #include "p_maputl.h"
+#include "g_levellocals.h"
 
 // State.
 #include "r_state.h"

src/p_linkedsectors.cpp

@@ -37,6 +37,7 @@
 #include "p_local.h"
 #include "p_lnspec.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 enum
 {
@@ -360,7 +361,7 @@ void P_AddSectorLinksByID(sector_t *control, int id, INTBOOL ceiling)
 	int line;
 	while ((line = itr.Next()) >= 0)
 	{
-		line_t *ld = &lines[line];
+		line_t *ld = &level.lines[line];
 
 		if (ld->special == Static_Init && ld->args[1] == Init_SectorLink)
 		{

src/p_lnspec.cpp

@@ -61,6 +61,7 @@
 #include "r_data/colormaps.h"
 #include "fragglescript/t_fs.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 // Remaps EE sector change types to Generic_Floor values. According to the Eternity Wiki:
 /*
@@ -2604,7 +2605,7 @@ FUNC(LS_Line_SetTextureOffset)
 	int line;
 	while ((line = itr.Next()) >= 0)
 	{
-		side_t *side = lines[line].sidedef[arg3];
+		side_t *side = level.lines[line].sidedef[arg3];
 		if (side != NULL)
 		{
 
@@ -2659,7 +2660,7 @@ FUNC(LS_Line_SetTextureScale)
 	int line;
 	while ((line = itr.Next()) >= 0)
 	{
-		side_t *side = lines[line].sidedef[arg3];
+		side_t *side = level.lines[line].sidedef[arg3];
 		if (side != NULL)
 		{
 			if ((arg4&8)==0)
@@ -2733,7 +2734,7 @@ FUNC(LS_Line_SetBlocking)
 	int line;
 	while ((line = itr.Next()) >= 0)
 	{
-		lines[line].flags = (lines[line].flags & ~clearflags) | setflags;
+		level.lines[line].flags = (level.lines[line].flags & ~clearflags) | setflags;
 	}
 	return true;
 }
@@ -3028,14 +3029,14 @@ FUNC(LS_TranslucentLine)
 	int linenum;
 	while ((linenum = itr.Next()) >= 0)
 	{
-		lines[linenum].alpha = clamp(arg1, 0, 255) / 255.;
+		level.lines[linenum].alpha = clamp(arg1, 0, 255) / 255.;
 		if (arg2 == 0)
 		{
-			lines[linenum].flags &= ~ML_ADDTRANS;
+			level.lines[linenum].flags &= ~ML_ADDTRANS;
 		}
 		else if (arg2 == 1)
 		{
-			lines[linenum].flags |= ML_ADDTRANS;
+			level.lines[linenum].flags |= ML_ADDTRANS;
 		}
 		else
 		{

src/p_map.cpp

@@ -63,6 +63,7 @@
 #include "r_data/r_translate.h"
 #include "g_level.h"
 #include "r_sky.h"
+#include "g_levellocals.h"
 
 CVAR(Bool, cl_bloodsplats, true, CVAR_ARCHIVE)
 CVAR(Int, sv_smartaim, 0, CVAR_ARCHIVE | CVAR_SERVERINFO)
@@ -183,7 +184,7 @@ static bool PIT_FindFloorCeiling(FMultiBlockLinesIterator &mit, FMultiBlockLines
 	if (ffcf_verbose)
 	{
 		Printf("Hit line %d at position %f,%f, group %d\n",
-			int(ld - lines), cres.Position.X, cres.Position.Y, ld->frontsector->PortalGroup);
+			ld->Index(), cres.Position.X, cres.Position.Y, ld->frontsector->PortalGroup);
 	}
 
 	if (!ld->backsector)
@@ -3296,7 +3297,6 @@ bool FSlide::BounceTraverse(const DVector2 &start, const DVector2 &end)
 		}
 
 		li = in->d.line;
-		assert(((size_t)li - (size_t)lines) % sizeof(line_t) == 0);
 		if (li->flags & ML_BLOCKEVERYTHING)
 		{
 			goto bounceblocking;
@@ -3907,7 +3907,7 @@ struct aim_t
 				int frontflag = P_PointOnLineSidePrecise(startpos, li);
 
 				if (aimdebug)
-					Printf("Found line %d: ___toppitch = %f, ___bottompitch = %f\n", int(li - lines), toppitch.Degrees, bottompitch.Degrees);
+					Printf("Found line %d: toppitch = %f, bottompitch = %f\n", li->Index(), toppitch.Degrees, bottompitch.Degrees);
 
 				if (li->isLinePortal() && frontflag == 0)
 				{
@@ -3951,7 +3951,7 @@ struct aim_t
 					return;
 
 				if (aimdebug)
-					Printf("After line %d: toppitch = %f, bottompitch = %f, planestocheck = %d\n", int(li - lines), toppitch.Degrees, bottompitch.Degrees, planestocheck);
+					Printf("After line %d: toppitch = %f, bottompitch = %f, planestocheck = %d\n", li->Index(), toppitch.Degrees, bottompitch.Degrees, planestocheck);
 
 				sector_t *entersec = frontflag ? li->frontsector : li->backsector;
 				sector_t *exitsec = frontflag ? li->backsector : li->frontsector;

src/p_maputl.cpp

@@ -44,6 +44,7 @@
 #include "r_state.h"
 #include "templates.h"
 #include "po_man.h"
+#include "g_levellocals.h"
 
 sector_t *P_PointInSectorBuggy(double x, double y);
 int P_VanillaPointOnDivlineSide(double x, double y, const divline_t* line);
@@ -330,7 +331,7 @@ bool AActor::FixMapthingPos()
 
 		for (list = blockmaplump + blockmap[blocky*bmapwidth + blockx] + 1; *list != -1; ++list)
 		{
-			line_t *ldef = &lines[*list];
+			line_t *ldef = &level.lines[*list];
 
 			if (ldef->frontsector == ldef->backsector)
 			{ // Skip two-sided lines inside a single sector
@@ -367,10 +368,10 @@ bool AActor::FixMapthingPos()
 
 			if (distance < radius)
 			{
-				DPrintf(DMSG_NOTIFY, "%s at (%f,%f) lies on %s line %td, distance = %f\n",
+				DPrintf(DMSG_NOTIFY, "%s at (%f,%f) lies on %s line %d, distance = %f\n",
 					this->GetClass()->TypeName.GetChars(), X(), Y(),
 					ldef->Delta().X == 0 ? "vertical" : ldef->Delta().Y == 0 ? "horizontal" : "diagonal",
-					ldef - lines, distance);
+					ldef->Index(), distance);
 				DAngle ang = ldef->Delta().Angle();
 				if (ldef->backsector != NULL && ldef->backsector == secstart)
 				{
@@ -709,7 +710,7 @@ line_t *FBlockLinesIterator::Next()
 		{
 			while (*list != -1)
 			{
-				line_t *ld = &lines[*list];
+				line_t *ld = &level.lines[*list];
 
 				list++;
 				if (ld->validcount != validcount)

src/p_mobj.cpp

@@ -72,6 +72,7 @@
 #include "a_armor.h"
 #include "a_ammo.h"
 #include "a_health.h"
+#include "g_levellocals.h"
 
 // MACROS ------------------------------------------------------------------
 
@@ -7539,6 +7540,22 @@ DEFINE_ACTION_FUNCTION(AActor, A_RestoreSpecialPosition)
 	return 0;
 }
 
+double AActor::GetBobOffset(double ticfrac) const
+{
+	if (!(flags2 & MF2_FLOATBOB))
+	{
+		return 0;
+	}
+	return BobSin(FloatBobPhase + level.maptime + ticfrac);
+}
+
+DEFINE_ACTION_FUNCTION(AActor, GetBobOffset)
+{
+	PARAM_SELF_PROLOGUE(AActor);
+	PARAM_FLOAT_DEF(frac);
+	ACTION_RETURN_FLOAT(self->GetBobOffset(frac));
+}
+
 
 
 
@@ -7639,13 +7656,6 @@ DEFINE_ACTION_FUNCTION(AActor, GetDefaultByType)
 	ACTION_RETURN_OBJECT(cls == nullptr? nullptr : GetDefaultByType(cls));
 }
 
-DEFINE_ACTION_FUNCTION(AActor, GetBobOffset)
-{
-	PARAM_SELF_PROLOGUE(AActor);
-	PARAM_FLOAT_DEF(frac);
-	ACTION_RETURN_FLOAT(self->GetBobOffset(frac));
-}
-
 // This combines all 3 variations of the internal function
 DEFINE_ACTION_FUNCTION(AActor, VelFromAngle)
 {

src/p_pillar.cpp

@@ -39,6 +39,7 @@
 #include "s_sndseq.h"
 #include "serializer.h"
 #include "r_data/r_interpolate.h"
+#include "g_levellocals.h"
 
 IMPLEMENT_CLASS(DPillar, false, true)
 

src/p_plats.cpp

@@ -32,6 +32,7 @@
 #include "gi.h"
 #include "serializer.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 static FRandom pr_doplat ("DoPlat");
 

src/p_pspr.cpp

@@ -30,6 +30,7 @@
 #include "serializer.h"
 #include "v_text.h"
 #include "cmdlib.h"
+#include "g_levellocals.h"
 
 
 // MACROS ------------------------------------------------------------------

src/p_pusher.cpp

@@ -32,6 +32,7 @@
 #include "p_maputl.h"
 #include "p_local.h"
 #include "d_player.h"
+#include "g_levellocals.h"
 
 CVAR(Bool, var_pushers, true, CVAR_SERVERINFO);
 
@@ -358,11 +359,10 @@ AActor *P_GetPushThing (int s)
 
 void P_SpawnPushers ()
 {
-	int i;
-	line_t *l = lines;
+	line_t *l = &level.lines[0];
 	int s;
 
-	for (i = 0; i < numlines; i++, l++)
+	for (unsigned i = 0; i < level.lines.Size(); i++, l++)
 	{
 		switch (l->special)
 		{

src/p_saveg.cpp

@@ -62,6 +62,11 @@
 #include "r_sky.h"
 #include "r_renderer.h"
 #include "serializer.h"
+#include "g_levellocals.h"
+
+static TStaticArray<sector_t>	loadsectors;
+static TStaticArray<line_t>		loadlines;
+static TStaticArray<side_t>		loadsides;
 
 
 //==========================================================================
@@ -353,6 +358,7 @@ FSerializer &Serialize(FSerializer &arc, const char *key, subsector_t *&ss, subs
 			str = &encoded[0];
 			if (arc.BeginArray(key))
 			{
+				auto numvertexes = level.vertexes.Size();
 				arc(nullptr, numvertexes)
 					(nullptr, numsubsectors)
 					.StringPtr(nullptr, str)
@@ -371,7 +377,7 @@ FSerializer &Serialize(FSerializer &arc, const char *key, subsector_t *&ss, subs
 				.StringPtr(nullptr, str)
 				.EndArray();
 
-			if (num_verts == numvertexes && num_subs == numsubsectors && hasglnodes)
+			if (num_verts == level.vertexes.Size() && num_subs == numsubsectors && hasglnodes)
 			{
 				success = true;
 				int sub = 0;
@@ -898,8 +904,8 @@ void G_SerializeLevel(FSerializer &arc, bool hubload)
 		// deep down in the deserializer or just a crash if the few insufficient safeguards were not triggered.
 		BYTE chk[16] = { 0 };
 		arc.Array("checksum", chk, 16);
-		if (arc.GetSize("linedefs") != (unsigned)numlines ||
-			arc.GetSize("sidedefs") != (unsigned)numsides ||
+		if (arc.GetSize("linedefs") != level.lines.Size() ||
+			arc.GetSize("sidedefs") != level.sides.Size() ||
 			arc.GetSize("sectors") != level.sectors.Size() ||
 			arc.GetSize("polyobjs") != (unsigned)po_NumPolyobjs ||
 			memcmp(chk, level.md5, 16))
@@ -952,8 +958,8 @@ void G_SerializeLevel(FSerializer &arc, bool hubload)
 
 	FBehavior::StaticSerializeModuleStates(arc);
 	// The order here is important: First world state, then portal state, then thinkers, and last polyobjects.
-	arc.Array("linedefs", lines, &loadlines[0], numlines);
-	arc.Array("sidedefs", sides, &loadsides[0], numsides);
+	arc.Array("linedefs", &level.lines[0], &loadlines[0], level.lines.Size());
+	arc.Array("sidedefs", &level.sides[0], &loadsides[0], level.sides.Size());
 	arc.Array("sectors", &level.sectors[0], &loadsectors[0], level.sectors.Size());
 	arc("zones", Zones);
 	arc("lineportals", linePortals);
@@ -988,4 +994,18 @@ void G_SerializeLevel(FSerializer &arc, bool hubload)
 
 }
 
+// Create a backup of the map data so the savegame code can toss out all fields that haven't changed in order to reduce processing time and file size.
 
+void P_BackupMapData()
+{
+	loadsectors = level.sectors;
+	loadlines = level.lines;
+	loadsides = level.sides;
+}
+
+void P_FreeMapDataBackup()
+{
+	loadsectors.Clear();
+	loadlines.Clear();
+	loadsides.Clear();
+}

src/p_saveg.h

@@ -46,4 +46,7 @@ void P_WriteACSDefereds (FSerializer &);
 
 void G_SerializeLevel(FSerializer &arc, bool hubLoad);
 
+void P_BackupMapData();
+void P_FreeMapDataBackup();
+
 #endif // __P_SAVEG_H__

src/p_scroll.cpp

@@ -29,6 +29,7 @@
 #include "serializer.h"
 #include "p_lnspec.h"
 #include "r_data/r_interpolate.h"
+#include "g_levellocals.h"
 
 //-----------------------------------------------------------------------------
 //
@@ -191,19 +192,19 @@ void DScroller::Tick ()
 		case EScroll::sc_side:					// killough 3/7/98: Scroll wall texture
 			if (m_Parts & EScrollPos::scw_top)
 			{
-				sides[m_Affectee].AddTextureXOffset(side_t::top, dx);
-				sides[m_Affectee].AddTextureYOffset(side_t::top, dy);
+				level.sides[m_Affectee].AddTextureXOffset(side_t::top, dx);
+				level.sides[m_Affectee].AddTextureYOffset(side_t::top, dy);
 			}
-			if (m_Parts & EScrollPos::scw_mid && (sides[m_Affectee].linedef->backsector == NULL ||
-				!(sides[m_Affectee].linedef->flags&ML_3DMIDTEX)))
+			if (m_Parts & EScrollPos::scw_mid && (level.sides[m_Affectee].linedef->backsector == NULL ||
+				!(level.sides[m_Affectee].linedef->flags&ML_3DMIDTEX)))
 			{
-				sides[m_Affectee].AddTextureXOffset(side_t::mid, dx);
-				sides[m_Affectee].AddTextureYOffset(side_t::mid, dy);
+				level.sides[m_Affectee].AddTextureXOffset(side_t::mid, dx);
+				level.sides[m_Affectee].AddTextureYOffset(side_t::mid, dy);
 			}
 			if (m_Parts & EScrollPos::scw_bottom)
 			{
-				sides[m_Affectee].AddTextureXOffset(side_t::bottom, dx);
-				sides[m_Affectee].AddTextureYOffset(side_t::bottom, dy);
+				level.sides[m_Affectee].AddTextureXOffset(side_t::bottom, dx);
+				level.sides[m_Affectee].AddTextureYOffset(side_t::bottom, dy);
 			}
 			break;
 
@@ -276,19 +277,19 @@ DScroller::DScroller (EScroll type, double dx, double dy,
 		break;
 
 	case EScroll::sc_side:
-		sides[affectee].Flags |= WALLF_NOAUTODECALS;
+		level.sides[affectee].Flags |= WALLF_NOAUTODECALS;
 		if (m_Parts & EScrollPos::scw_top)
 		{
-			m_Interpolations[0] = sides[m_Affectee].SetInterpolation(side_t::top);
+			m_Interpolations[0] = level.sides[m_Affectee].SetInterpolation(side_t::top);
 		}
-		if (m_Parts & EScrollPos::scw_mid && (sides[m_Affectee].linedef->backsector == NULL ||
-			!(sides[m_Affectee].linedef->flags&ML_3DMIDTEX)))
+		if (m_Parts & EScrollPos::scw_mid && (level.sides[m_Affectee].linedef->backsector == nullptr ||
+			!(level.sides[m_Affectee].linedef->flags&ML_3DMIDTEX)))
 		{
-			m_Interpolations[1] = sides[m_Affectee].SetInterpolation(side_t::mid);
+			m_Interpolations[1] = level.sides[m_Affectee].SetInterpolation(side_t::mid);
 		}
 		if (m_Parts & EScrollPos::scw_bottom)
 		{
-			m_Interpolations[2] = sides[m_Affectee].SetInterpolation(side_t::bottom);
+			m_Interpolations[2] = level.sides[m_Affectee].SetInterpolation(side_t::bottom);
 		}
 		break;
 
@@ -349,22 +350,22 @@ DScroller::DScroller (double dx, double dy, const line_t *l,
 	m_LastHeight = 0;
 	if ((m_Control = control) != -1)
 		m_LastHeight = level.sectors[control].CenterFloor() + level.sectors[control].CenterCeiling();
-	m_Affectee = int(l->sidedef[0] - sides);
-	sides[m_Affectee].Flags |= WALLF_NOAUTODECALS;
+	m_Affectee = l->sidedef[0]->Index();
+	level.sides[m_Affectee].Flags |= WALLF_NOAUTODECALS;
 	m_Interpolations[0] = m_Interpolations[1] = m_Interpolations[2] = NULL;
 
 	if (m_Parts & EScrollPos::scw_top)
 	{
-		m_Interpolations[0] = sides[m_Affectee].SetInterpolation(side_t::top);
+		m_Interpolations[0] = level.sides[m_Affectee].SetInterpolation(side_t::top);
 	}
-	if (m_Parts & EScrollPos::scw_mid && (sides[m_Affectee].linedef->backsector == NULL ||
-		!(sides[m_Affectee].linedef->flags&ML_3DMIDTEX)))
+	if (m_Parts & EScrollPos::scw_mid && (level.sides[m_Affectee].linedef->backsector == NULL ||
+		!(level.sides[m_Affectee].linedef->flags&ML_3DMIDTEX)))
 	{
-		m_Interpolations[1] = sides[m_Affectee].SetInterpolation(side_t::mid);
+		m_Interpolations[1] = level.sides[m_Affectee].SetInterpolation(side_t::mid);
 	}
 	if (m_Parts & EScrollPos::scw_bottom)
 	{
-		m_Interpolations[2] = sides[m_Affectee].SetInterpolation(side_t::bottom);
+		m_Interpolations[2] = level.sides[m_Affectee].SetInterpolation(side_t::bottom);
 	}
 }
 
@@ -380,24 +381,23 @@ DScroller::DScroller (double dx, double dy, const line_t *l,
 
 void P_SpawnScrollers(void)
 {
-	int i;
-	line_t *l = lines;
+	line_t *l = &level.lines[0];
 	TArray<int> copyscrollers;
 
-	for (i = 0; i < numlines; i++)
+	for (auto &line : level.lines)
 	{
-		if (lines[i].special == Sector_CopyScroller)
+		if (line.special == Sector_CopyScroller)
 		{
 			// don't allow copying the scroller if the sector has the same tag as it would just duplicate it.
-			if (!tagManager.SectorHasTag(lines[i].frontsector, lines[i].args[0]))
+			if (!tagManager.SectorHasTag(line.frontsector, line.args[0]))
 			{
-				copyscrollers.Push(i);
+				copyscrollers.Push(line.Index());
 			}
-			lines[i].special = 0;
+			line.special = 0;
 		}
 	}
 
-	for (i = 0; i < numlines; i++, l++)
+	for (unsigned i = 0; i < level.lines.Size(); i++, l++)
 	{
 		double dx;	// direction and speed of scrolling
 		double dy;
@@ -474,7 +474,7 @@ void P_SpawnScrollers(void)
 			}
 			for (unsigned j = 0; j < copyscrollers.Size(); j++)
 			{
-				line_t *line = &lines[copyscrollers[j]];
+				line_t *line = &level.lines[copyscrollers[j]];
 
 				if (line->args[0] == l->args[0] && (line->args[1] & 1))
 				{
@@ -494,7 +494,7 @@ void P_SpawnScrollers(void)
 				}
 				for(unsigned j = 0;j < copyscrollers.Size(); j++)
 				{
-					line_t *line = &lines[copyscrollers[j]];
+					line_t *line = &level.lines[copyscrollers[j]];
 
 					if (line->args[0] == l->args[0] && (line->args[1] & 2))
 					{
@@ -512,7 +512,7 @@ void P_SpawnScrollers(void)
 				}
 				for(unsigned j = 0;j < copyscrollers.Size(); j++)
 				{
-					line_t *line = &lines[copyscrollers[j]];
+					line_t *line = &level.lines[copyscrollers[j]];
 
 					if (line->args[0] == l->args[0] && (line->args[1] & 4))
 					{
@@ -530,48 +530,48 @@ void P_SpawnScrollers(void)
 			while ((s = itr.Next()) >= 0)
 			{
 				if (s != i)
-					new DScroller(dx, dy, lines + s, control, accel);
+					new DScroller(dx, dy, &level.lines[s], control, accel);
 			}
 			break;
 		}
 
 		case Scroll_Texture_Offsets:
 			// killough 3/2/98: scroll according to sidedef offsets
-			s = int(lines[i].sidedef[0] - sides);
-			new DScroller (EScroll::sc_side, -sides[s].GetTextureXOffset(side_t::mid),
-				sides[s].GetTextureYOffset(side_t::mid), -1, s, accel, SCROLLTYPE(l->args[0]));
+			s = level.lines[i].sidedef[0]->Index();
+			new DScroller (EScroll::sc_side, -level.sides[s].GetTextureXOffset(side_t::mid),
+				level.sides[s].GetTextureYOffset(side_t::mid), -1, s, accel, SCROLLTYPE(l->args[0]));
 			break;
 
 		case Scroll_Texture_Left:
 			l->special = special;	// Restore the special, for compat_useblocking's benefit.
-			s = int(lines[i].sidedef[0] - sides);
+			s = level.lines[i].sidedef[0]->Index();
 			new DScroller (EScroll::sc_side, l->args[0] / 64., 0,
 						   -1, s, accel, SCROLLTYPE(l->args[1]));
 			break;
 
 		case Scroll_Texture_Right:
 			l->special = special;
-			s = int(lines[i].sidedef[0] - sides);
+			s = level.lines[i].sidedef[0]->Index();
 			new DScroller (EScroll::sc_side, -l->args[0] / 64., 0,
 						   -1, s, accel, SCROLLTYPE(l->args[1]));
 			break;
 
 		case Scroll_Texture_Up:
 			l->special = special;
-			s = int(lines[i].sidedef[0] - sides);
+			s = level.lines[i].sidedef[0]->Index();
 			new DScroller (EScroll::sc_side, 0, l->args[0] / 64.,
 						   -1, s, accel, SCROLLTYPE(l->args[1]));
 			break;
 
 		case Scroll_Texture_Down:
 			l->special = special;
-			s = int(lines[i].sidedef[0] - sides);
+			s = level.lines[i].sidedef[0]->Index();
 			new DScroller (EScroll::sc_side, 0, -l->args[0] / 64.,
 						   -1, s, accel, SCROLLTYPE(l->args[1]));
 			break;
 
 		case Scroll_Texture_Both:
-			s = int(lines[i].sidedef[0] - sides);
+			s = level.lines[i].sidedef[0]->Index();
 			if (l->args[0] == 0) {
 				dx = (l->args[1] - l->args[2]) / 64.;
 				dy = (l->args[4] - l->args[3]) / 64.;
@@ -608,8 +608,8 @@ void SetWallScroller (int id, int sidechoice, double dx, double dy, EScrollPos W
 		{
 			int wallnum = scroller->GetWallNum ();
 
-			if (wallnum >= 0 && tagManager.LineHasID(sides[wallnum].linedef, id) &&
-				int(sides[wallnum].linedef->sidedef[sidechoice] - sides) == wallnum &&
+			if (wallnum >= 0 && tagManager.LineHasID(level.sides[wallnum].linedef, id) &&
+				level.sides[wallnum].linedef->sidedef[sidechoice]->Index() == wallnum &&
 				Where == scroller->GetScrollParts())
 			{
 				scroller->Destroy ();
@@ -628,8 +628,8 @@ void SetWallScroller (int id, int sidechoice, double dx, double dy, EScrollPos W
 			while ( (collect.Obj = iterator.Next ()) )
 			{
 				if ((collect.RefNum = ((DScroller *)collect.Obj)->GetWallNum ()) != -1 &&
-					tagManager.LineHasID(sides[collect.RefNum].linedef, id) &&
-					int(sides[collect.RefNum].linedef->sidedef[sidechoice] - sides) == collect.RefNum &&
+					tagManager.LineHasID(level.sides[collect.RefNum].linedef, id) &&
+					level.sides[collect.RefNum].linedef->sidedef[sidechoice]->Index() == collect.RefNum &&
 					Where == ((DScroller *)collect.Obj)->GetScrollParts())
 				{
 					((DScroller *)collect.Obj)->SetRate (dx, dy);
@@ -645,9 +645,9 @@ void SetWallScroller (int id, int sidechoice, double dx, double dy, EScrollPos W
 		FLineIdIterator itr(id);
 		while ((linenum = itr.Next()) >= 0)
 		{
-			if (lines[linenum].sidedef[sidechoice] != NULL)
+			if (level.lines[linenum].sidedef[sidechoice] != NULL)
 			{
-				int sidenum = int(lines[linenum].sidedef[sidechoice] - sides);
+				int sidenum = level.lines[linenum].sidedef[sidechoice]->Index();
 				unsigned int i;
 				for (i = 0; i < numcollected; i++)
 				{

src/p_sectors.cpp

@@ -35,6 +35,7 @@
 #include "p_local.h"
 #include "r_sky.h"
 #include "r_data/colormaps.h"
+#include "g_levellocals.h"
 
 
 // [RH]
@@ -710,7 +711,7 @@ double sector_t::FindHighestFloorPoint (vertex_t **v) const
 	{
 		if (v != NULL)
 		{
-			if (Lines.Size() == 0) *v = &vertexes[0];
+			if (Lines.Size() == 0) *v = &level.vertexes[0];
 			else *v = Lines[0]->v1;
 		}
 		return -floorplane.fD();
@@ -759,7 +760,7 @@ double sector_t::FindLowestCeilingPoint (vertex_t **v) const
 	{
 		if (v != NULL)
 		{
-			if (Lines.Size() == 0) *v = &vertexes[0];
+			if (Lines.Size() == 0) *v = &level.vertexes[0];
 			else *v = Lines[0]->v1;
 		}
 		return ceilingplane.fD();
@@ -1772,6 +1773,205 @@ DEFINE_ACTION_FUNCTION(_Sector, NextLowestFloorAt)
 	 ACTION_RETURN_FLOAT(self->CenterCeiling());
  }
 
+ DEFINE_ACTION_FUNCTION(_Sector, Index)
+ {
+	PARAM_SELF_STRUCT_PROLOGUE(sector_t);
+	unsigned ndx = self->Index();
+	if (ndx >= level.sectors.Size())
+	{
+		// This qualifies as an array out of bounds exception. Normally it can only happen when a sector copy is concerned which scripts should not be able to create.
+		ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Accessed invalid sector");
+	}
+	ACTION_RETURN_INT(ndx);
+ }
+
+ //===========================================================================
+ //
+ //  line_t exports
+ //
+ //===========================================================================
+
+ DEFINE_ACTION_FUNCTION(_Line, isLinePortal)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(line_t);
+	 ACTION_RETURN_BOOL(self->isLinePortal());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Line, isVisualPortal)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(line_t);
+	 ACTION_RETURN_BOOL(self->isVisualPortal());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Line, getPortalDestination)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(line_t);
+	 ACTION_RETURN_POINTER(self->getPortalDestination());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Line, getPortalAlignment)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(line_t);
+	 ACTION_RETURN_INT(self->getPortalAlignment());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Line, Index)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(line_t);
+	 unsigned ndx = self->Index();
+	 if (ndx >= level.lines.Size())
+	 {
+		 ThrowAbortException(X_ARRAY_OUT_OF_BOUNDS, "Accessed invalid line");
+	 }
+	 ACTION_RETURN_INT(ndx);
+ }
+
+ //===========================================================================
+ //
+ // 
+ //
+ //===========================================================================
+
+ DEFINE_ACTION_FUNCTION(_Side, GetTexture)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 ACTION_RETURN_INT(self->GetTexture(which).GetIndex());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, SetTexture)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_INT(tex);
+	 self->SetTexture(which, FSetTextureID(tex));
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, SetTextureXOffset)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->SetTextureXOffset(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, AddTextureXOffset)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->AddTextureXOffset(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, GetTextureXOffset)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 ACTION_RETURN_FLOAT(self->GetTextureXOffset(which));
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, SetTextureYOffset)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->SetTextureYOffset(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, AddTextureYOffset)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->AddTextureYOffset(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, GetTextureYOffset)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 ACTION_RETURN_FLOAT(self->GetTextureYOffset(which));
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, SetTextureXScale)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->SetTextureXScale(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, MultiplyTextureXScale)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->MultiplyTextureXScale(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, GetTextureXScale)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 ACTION_RETURN_FLOAT(self->GetTextureXScale(which));
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, SetTextureYScale)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->SetTextureYScale(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, MultiplyTextureYScale)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 PARAM_FLOAT(ofs);
+	 self->MultiplyTextureYScale(which, ofs);
+	 return 0;
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, GetTextureYScale)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 PARAM_INT(which);
+	 ACTION_RETURN_FLOAT(self->GetTextureYScale(which));
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, V1)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 ACTION_RETURN_POINTER(self->V1());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, V2)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 ACTION_RETURN_POINTER(self->V2());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Side, Index)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(side_t);
+	 ACTION_RETURN_INT(self->Index());
+ }
+
+ DEFINE_ACTION_FUNCTION(_Vertex, Index)
+ {
+	 PARAM_SELF_STRUCT_PROLOGUE(vertex_t);
+	 ACTION_RETURN_INT(self->Index());
+ }
+
 //===========================================================================
 //
 // 
@@ -1838,7 +2038,7 @@ bool secplane_t::CopyPlaneIfValid (secplane_t *dest, const secplane_t *opp) cons
 
 bool P_AlignFlat (int linenum, int side, int fc)
 {
-	line_t *line = lines + linenum;
+	line_t *line = &level.lines[linenum];
 	sector_t *sec = side ? line->backsector : line->frontsector;
 
 	if (!sec)
@@ -1871,10 +2071,10 @@ void subsector_t::BuildPolyBSP()
 	assert((BSP == NULL || BSP->bDirty) && "BSP computed more than once");
 
 	// Set up level information for the node builder.
-	PolyNodeLevel.Sides = sides;
-	PolyNodeLevel.NumSides = numsides;
-	PolyNodeLevel.Lines = lines;
-	PolyNodeLevel.NumLines = numlines;
+	PolyNodeLevel.Sides = &level.sides[0];
+	PolyNodeLevel.NumSides = level.sides.Size();
+	PolyNodeLevel.Lines = &level.lines[0];
+	PolyNodeLevel.NumLines = numlines; // is this correct???
 
 	// Feed segs to the nodebuilder and build the nodes.
 	PolyNodeBuilder.Clear();
@@ -2100,6 +2300,12 @@ DEFINE_FIELD_X(Line, line_t, backsector)
 DEFINE_FIELD_X(Line, line_t, validcount)
 DEFINE_FIELD_X(Line, line_t, locknumber)
 DEFINE_FIELD_X(Line, line_t, portalindex)
+DEFINE_FIELD_X(Line, line_t, portaltransferred)
+
+DEFINE_FIELD_X(Side, side_t, sector)
+DEFINE_FIELD_X(Side, side_t, linedef)
+DEFINE_FIELD_X(Side, side_t, Light)
+DEFINE_FIELD_X(Side, side_t, Flags)
 
 DEFINE_FIELD_X(Secplane, secplane_t, normal)
 DEFINE_FIELD_X(Secplane, secplane_t, D)

src/p_setup.cpp

@@ -73,6 +73,8 @@
 #include "p_blockmap.h"
 #include "r_utility.h"
 #include "p_spec.h"
+#include "p_saveg.h"
+#include "g_levellocals.h"
 #ifndef NO_EDATA
 #include "edata.h"
 #endif
@@ -88,7 +90,6 @@ void BloodCrypt (void *data, int key, int len);
 void P_ClearUDMFKeys();
 
 extern AActor *P_SpawnMapThing (FMapThing *mthing, int position);
-extern bool P_LoadBuildMap (BYTE *mapdata, size_t len, FMapThing **things, int *numthings);
 
 extern void P_TranslateTeleportThings (void);
 
@@ -106,25 +107,25 @@ CVAR (Bool, showloadtimes, false, 0);
 
 static void P_Shutdown ();
 
-bool P_IsBuildMap(MapData *map);
+inline bool P_IsBuildMap(MapData *map)
+{
+	return false;
+}
+
+inline bool P_LoadBuildMap(BYTE *mapdata, size_t len, FMapThing **things, int *numthings)
+{
+	return false;
+}
 
 
 //
 // MAP related Lookup tables.
 // Store VERTEXES, LINEDEFS, SIDEDEFS, etc.
 //
-int 			numvertexes;
-vertex_t*		vertexes;
-int 			numvertexdatas;
-vertexdata_t*		vertexdatas;
+TArray<vertexdata_t> vertexdatas;
 
 int 			numsegs;
 seg_t*			segs;
-glsegextra_t*	glsegextras;
-
-//int 			numsectors;
-//sector_t*		sectors;
-TArray<sector_t>	loadsectors;
 
 int 			numsubsectors;
 subsector_t*	subsectors;
@@ -132,14 +133,6 @@ subsector_t*	subsectors;
 int 			numnodes;
 node_t* 		nodes;
 
-int 			numlines;
-line_t* 		lines;
-TArray<line_t>	loadlines;
-
-int 			numsides;
-side_t* 		sides;
-TArray<side_t>	loadsides;
-
 TArray<zone_t>	Zones;
 
 node_t * 		gamenodes;
@@ -195,7 +188,7 @@ TArray<FPlayerStart> deathmatchstarts (16);
 FPlayerStart		playerstarts[MAXPLAYERS];
 TArray<FPlayerStart> AllPlayerStarts;
 
-static void P_AllocateSideDefs (int count);
+static void P_AllocateSideDefs (MapData *map, int count);
 
 
 //===========================================================================
@@ -594,11 +587,11 @@ static void SetTexture (side_t *side, int position, const char *name, FMissingTe
 		{
 			// Print an error that lists all references to this sidedef.
 			// We must scan the linedefs manually for all references to this sidedef.
-			for(int i = 0; i < numlines; i++)
+			for(unsigned i = 0; i < level.lines.Size(); i++)
 			{
 				for(int j = 0; j < 2; j++)
 				{
-					if (lines[i].sidedef[j] == side)
+					if (level.lines[i].sidedef[j] == side)
 					{
 						Printf(TEXTCOLOR_RED"Unknown %s texture '"
 							TEXTCOLOR_ORANGE "%s" TEXTCOLOR_RED
@@ -836,12 +829,9 @@ void P_FloodZones ()
 
 void P_LoadVertexes (MapData * map)
 {
-	int i;
-
 	// Determine number of vertices:
 	//	total lump length / vertex record length.
-	numvertexes = map->Size(ML_VERTEXES) / sizeof(mapvertex_t);
-	numvertexdatas = 0;
+	unsigned numvertexes = map->Size(ML_VERTEXES) / sizeof(mapvertex_t);
 
 	if (numvertexes == 0)
 	{
@@ -849,18 +839,18 @@ void P_LoadVertexes (MapData * map)
 	}
 
 	// Allocate memory for buffer.
-	vertexes = new vertex_t[numvertexes];		
-	vertexdatas = NULL;
+	level.vertexes.Alloc(numvertexes);
+	vertexdatas.Clear();
 
 	map->Seek(ML_VERTEXES);
 		
 	// Copy and convert vertex coordinates, internal representation as fixed.
-	for (i = 0; i < numvertexes; i++)
+	for (auto &v : level.vertexes)
 	{
-		SWORD x, y;
+		int16_t x, y;
 
 		(*map->file) >> x >> y;
-		vertexes[i].set(double(x), double(y));
+		v.set(double(x), double(y));
 	}
 }
 
@@ -881,9 +871,9 @@ void P_LoadZSegs (FileReaderBase &data)
 
 		data >> v1 >> v2 >> line >> side;
 
-		segs[i].v1 = &vertexes[v1];
-		segs[i].v2 = &vertexes[v2];
-		segs[i].linedef = ldef = &lines[line];
+		segs[i].v1 = &level.vertexes[v1];
+		segs[i].v2 = &level.vertexes[v2];
+		segs[i].linedef = ldef = &level.lines[line];
 		segs[i].sidedef = ldef->sidedef[side];
 		segs[i].frontsector = ldef->sidedef[side]->sector;
 		if (ldef->flags & ML_TWOSIDED && ldef->sidedef[side^1] != NULL)
@@ -931,7 +921,7 @@ void P_LoadGLZSegs (FileReaderBase &data, int type)
 			data >> side;
 
 			seg = subsectors[i].firstline + j;
-			seg->v1 = &vertexes[v1];
+			seg->v1 = &level.vertexes[v1];
 			if (j == 0)
 			{
 				seg[subsectors[i].numlines - 1].v2 = seg->v1;
@@ -940,12 +930,12 @@ void P_LoadGLZSegs (FileReaderBase &data, int type)
 			{
 				seg[-1].v2 = seg->v1;
 			}
-			glsegextras[seg - segs].PartnerSeg = partner;
+			seg->PartnerSeg = &segs[partner];
 			if (line != 0xFFFFFFFF)
 			{
 				line_t *ldef;
 
-				seg->linedef = ldef = &lines[line];
+				seg->linedef = ldef = &level.lines[line];
 				seg->sidedef = ldef->sidedef[side];
 				seg->frontsector = ldef->sidedef[side]->sector;
 				if (ldef->flags & ML_TWOSIDED && ldef->sidedef[side^1] != NULL)
@@ -978,23 +968,26 @@ void LoadZNodes(FileReaderBase &data, int glnodes)
 {
 	// Read extra vertices added during node building
 	DWORD orgVerts, newVerts;
-	vertex_t *newvertarray;
+	TStaticArray<vertex_t> newvertarray;
 	unsigned int i;
 
 	data >> orgVerts >> newVerts;
-	if (orgVerts > (DWORD)numvertexes)
+	if (orgVerts > level.vertexes.Size())
 	{ // These nodes are based on a map with more vertex data than we have.
 	  // We can't use them.
 		throw CRecoverableError("Incorrect number of vertexes in nodes.\n");
 	}
-	if (orgVerts + newVerts == (DWORD)numvertexes)
+	bool fix;
+	if (orgVerts + newVerts == level.vertexes.Size())
 	{
-		newvertarray = vertexes;
+		newvertarray = std::move(level.vertexes);
+		fix = false;
 	}
 	else
 	{
-		newvertarray = new vertex_t[orgVerts + newVerts];
-		memcpy (newvertarray, vertexes, orgVerts * sizeof(vertex_t));
+		newvertarray.Alloc(orgVerts + newVerts);
+		memcpy (&newvertarray[0], &level.vertexes[0], orgVerts * sizeof(vertex_t));
+		fix = true;
 	}
 	for (i = 0; i < newVerts; ++i)
 	{
@@ -1002,16 +995,14 @@ void LoadZNodes(FileReaderBase &data, int glnodes)
 		data >> x >> y;
 		newvertarray[i + orgVerts].set(x, y);
 	}
-	if (vertexes != newvertarray)
+	if (fix)
 	{
-		for (i = 0; i < (DWORD)numlines; ++i)
+		for (auto &line : level.lines)
 		{
-			lines[i].v1 = lines[i].v1 - vertexes + newvertarray;
-			lines[i].v2 = lines[i].v2 - vertexes + newvertarray;
+			line.v1 = line.v1 - &level.vertexes[0] + &newvertarray[0];
+			line.v2 = line.v2 - &level.vertexes[0] + &newvertarray[0];
 		}
-		delete[] vertexes;
-		vertexes = newvertarray;
-		numvertexes = orgVerts + newVerts;
+		level.vertexes = std::move(newvertarray);
 	}
 
 	// Read the subsectors
@@ -1047,7 +1038,6 @@ void LoadZNodes(FileReaderBase &data, int glnodes)
 	numsegs = numSegs;
 	segs = new seg_t[numsegs];
 	memset (segs, 0, numsegs*sizeof(seg_t));
-	glsegextras = NULL;
 
 	for (i = 0; i < numSubs; ++i)
 	{
@@ -1060,7 +1050,6 @@ void LoadZNodes(FileReaderBase &data, int glnodes)
 	}
 	else
 	{
-		glsegextras = new glsegextra_t[numsegs];
 		P_LoadGLZSegs (data, glnodes);
 	}
 
@@ -1215,9 +1204,9 @@ void P_LoadSegs (MapData * map)
 {
 	int  i;
 	BYTE *data;
+	int numvertexes = level.vertexes.Size();
 	BYTE *vertchanged = new BYTE[numvertexes];	// phares 10/4/98
 	DWORD segangle;
-	line_t* line;		// phares 10/4/98
 	//int ptp_angle;		// phares 10/4/98
 	//int delta_angle;	// phares 10/4/98
 	int vnum1,vnum2;	// phares 10/4/98
@@ -1252,10 +1241,9 @@ void P_LoadSegs (MapData * map)
 	// Mark those used by linedefs. A marked vertex is one that is not a
 	// candidate for movement further down.
 
-	line = lines;
-	for (i = 0; i < numlines ; i++, line++)
+	for (auto &line : level.lines)
 	{
-		vertchanged[line->v1 - vertexes] = vertchanged[line->v2 - vertexes] = 1;
+		vertchanged[line.v1->Index()] = vertchanged[line.v2->Index()] = 1;
 	}
 
 	try
@@ -1276,8 +1264,8 @@ void P_LoadSegs (MapData * map)
 				throw badseg(0, i, MAX(vnum1, vnum2));
 			}
 
-			li->v1 = &vertexes[vnum1];
-			li->v2 = &vertexes[vnum2];
+			li->v1 = &level.vertexes[vnum1];
+			li->v2 = &level.vertexes[vnum2];
 
 			segangle = (WORD)LittleShort(ml->angle);
 
@@ -1332,16 +1320,16 @@ void P_LoadSegs (MapData * map)
 			}
 
 			linedef = LittleShort(ml->linedef);
-			if ((unsigned)linedef >= (unsigned)numlines)
+			if ((unsigned)linedef >= level.lines.Size())
 			{
 				throw badseg(1, i, linedef);
 			}
-			ldef = &lines[linedef];
+			ldef = &level.lines[linedef];
 			li->linedef = ldef;
 			side = LittleShort(ml->side);
-			if ((unsigned)(ldef->sidedef[side] - sides) >= (unsigned)numsides)
+			if ((unsigned)(ldef->sidedef[side]->Index()) >= level.sides.Size())
 			{
-				throw badseg(2, i, int(ldef->sidedef[side] - sides));
+				throw badseg(2, i, ldef->sidedef[side]->Index());
 			}
 			li->sidedef = ldef->sidedef[side];
 			li->frontsector = ldef->sidedef[side]->sector;
@@ -1367,11 +1355,11 @@ void P_LoadSegs (MapData * map)
 			break;
 
 		case 1:
-			Printf ("Seg %d references a nonexistant linedef %d (max %d).\n", bad.badsegnum, bad.baddata, numlines);
+			Printf ("Seg %d references a nonexistant linedef %d (max %u).\n", bad.badsegnum, bad.baddata, level.lines.Size());
 			break;
 
 		case 2:
-			Printf ("The linedef for seg %d references a nonexistant sidedef %d (max %d).\n", bad.badsegnum, bad.baddata, numsides);
+			Printf ("The linedef for seg %d references a nonexistant sidedef %d (max %d).\n", bad.badsegnum, bad.baddata, level.sides.Size());
 			break;
 		}
 		Printf ("The BSP will be rebuilt.\n");
@@ -1981,7 +1969,7 @@ void P_SaveLineSpecial (line_t *ld)
 	if (ld->sidedef[0] == NULL)
 		return;
 
-	DWORD sidenum = DWORD(ld->sidedef[0]-sides);
+	DWORD sidenum = ld->sidedef[0]->Index();
 	// killough 4/4/98: support special sidedef interpretation below
 	// [RH] Save Static_Init only if it's interested in the textures
 	if	(ld->special != Static_Init || ld->args[1] == Init_Color)
@@ -2003,7 +1991,7 @@ void P_FinishLoadingLineDef(line_t *ld, int alpha)
 	ld->backsector  = ld->sidedef[1] != NULL ? ld->sidedef[1]->sector : NULL;
 	double dx = (ld->v2->fX() - ld->v1->fX());
 	double dy = (ld->v2->fY() - ld->v1->fY());
-	int linenum = int(ld-lines);
+	int linenum = ld->Index();
 
 	if (ld->frontsector == NULL)
 	{
@@ -2027,8 +2015,6 @@ void P_FinishLoadingLineDef(line_t *ld, int alpha)
 
 	switch (ld->special)
 	{						// killough 4/11/98: handle special types
-		int j;
-
 	case TranslucentLine:			// killough 4/11/98: translucent 2s textures
 		// [RH] Second arg controls how opaque it is.
 		if (alpha == SHRT_MIN)
@@ -2053,14 +2039,14 @@ void P_FinishLoadingLineDef(line_t *ld, int alpha)
 		}
 		else
 		{
-			for (j = 0; j < numlines; j++)
+			for (unsigned j = 0; j < level.lines.Size(); j++)
 			{
 				if (tagManager.LineHasID(j, ld->args[0]))
 				{
-					lines[j].alpha = dalpha;
+					level.lines[j].alpha = dalpha;
 					if (additive)
 					{
-						lines[j].flags |= ML_ADDTRANS;
+						level.lines[j].flags |= ML_ADDTRANS;
 					}
 				}
 			}
@@ -2072,9 +2058,9 @@ void P_FinishLoadingLineDef(line_t *ld, int alpha)
 // killough 4/4/98: delay using sidedefs until they are loaded
 void P_FinishLoadingLineDefs ()
 {
-	for (int i = 0; i < numlines; i++)
+	for (auto &line : level.lines)
 	{
-		P_FinishLoadingLineDef(&lines[i], sidetemp[lines[i].sidedef[0]-sides].a.alpha);
+		P_FinishLoadingLineDef(&line, sidetemp[line.sidedef[0]->Index()].a.alpha);
 	}
 }
 
@@ -2084,10 +2070,10 @@ static void P_SetSideNum (side_t **sidenum_p, WORD sidenum)
 	{
 		*sidenum_p = NULL;
 	}
-	else if (sidecount < numsides)
+	else if (sidecount < (int)level.sides.Size())
 	{
 		sidetemp[sidecount].a.map = sidenum;
-		*sidenum_p = &sides[sidecount++];
+		*sidenum_p = &level.sides[sidecount++];
 	}
 	else
 	{
@@ -2103,10 +2089,10 @@ void P_LoadLineDefs (MapData * map)
 	char * mldf;
 	maplinedef_t *mld;
 		
-	numlines = lumplen / sizeof(maplinedef_t);
-	lines = new line_t[numlines];
+	int numlines = lumplen / sizeof(maplinedef_t);
+	level.lines.Alloc(numlines);
 	linemap.Resize(numlines);
-	memset (lines, 0, numlines*sizeof(line_t));
+	memset (&level.lines[0], 0, numlines*sizeof(line_t));
 
 	mldf = new char[lumplen];
 	map->Read(ML_LINEDEFS, mldf);
@@ -2118,17 +2104,16 @@ void P_LoadLineDefs (MapData * map)
 	for (skipped = sidecount = i = 0; i < numlines; )
 	{
 		mld = ((maplinedef_t*)mldf) + i;
-		int v1 = LittleShort(mld->v1);
-		int v2 = LittleShort(mld->v2);
+		unsigned v1 = LittleShort(mld->v1);
+		unsigned v2 = LittleShort(mld->v2);
 
-		if (v1 >= numvertexes || v2 >= numvertexes)
+		if (v1 >= level.vertexes.Size() || v2 >= level.vertexes.Size())
 		{
 			delete [] mldf;
-			I_Error ("Line %d has invalid vertices: %d and/or %d.\nThe map only contains %d vertices.", i+skipped, v1, v2, numvertexes);
+			I_Error ("Line %d has invalid vertices: %d and/or %d.\nThe map only contains %u vertices.", i+skipped, v1, v2, level.vertexes.Size());
 		}
 		else if (v1 == v2 ||
-			(vertexes[LittleShort(mld->v1)].fX() == vertexes[LittleShort(mld->v2)].fX() &&
-			 vertexes[LittleShort(mld->v1)].fY() == vertexes[LittleShort(mld->v2)].fY()))
+			(level.vertexes[v1].fX() == level.vertexes[v2].fX() && level.vertexes[v1].fY() == level.vertexes[v2].fY()))
 		{
 			Printf ("Removing 0-length line %d\n", i+skipped);
 			memmove (mld, mld+1, sizeof(*mld)*(numlines-i-1));
@@ -2153,14 +2138,15 @@ void P_LoadLineDefs (MapData * map)
 		}
 	}
 
-	P_AllocateSideDefs (sidecount);
+	P_AllocateSideDefs (map, sidecount);
 
 	mld = (maplinedef_t *)mldf;
-	ld = lines;
+	ld = &level.lines[0];
 	for (i = 0; i < numlines; i++, mld++, ld++)
 	{
 		ld->alpha = 1.;	// [RH] Opaque by default
 		ld->portalindex = UINT_MAX;
+		ld->portaltransferred = UINT_MAX;
 
 		// [RH] Translate old linedef special and flags to be
 		//		compatible with the new format.
@@ -2178,8 +2164,8 @@ void P_LoadLineDefs (MapData * map)
 		}
 #endif
 
-		ld->v1 = &vertexes[LittleShort(mld->v1)];
-		ld->v2 = &vertexes[LittleShort(mld->v2)];
+		ld->v1 = &level.vertexes[LittleShort(mld->v1)];
+		ld->v2 = &level.vertexes[LittleShort(mld->v2)];
 
 		P_SetSideNum (&ld->sidedef[0], LittleShort(mld->sidenum[0]));
 		P_SetSideNum (&ld->sidedef[1], LittleShort(mld->sidenum[1]));
@@ -2202,10 +2188,10 @@ void P_LoadLineDefs2 (MapData * map)
 	char * mldf;
 	maplinedef2_t *mld;
 		
-	numlines = lumplen / sizeof(maplinedef2_t);
-	lines = new line_t[numlines];
+	int numlines = lumplen / sizeof(maplinedef2_t);
+	level.lines.Alloc(numlines);
 	linemap.Resize(numlines);
-	memset (lines, 0, numlines*sizeof(line_t));
+	memset (&level.lines[0], 0, numlines*sizeof(line_t));
 
 	mldf = new char[lumplen];
 	map->Read(ML_LINEDEFS, mldf);
@@ -2216,8 +2202,8 @@ void P_LoadLineDefs2 (MapData * map)
 		mld = ((maplinedef2_t*)mldf) + i;
 
 		if (mld->v1 == mld->v2 ||
-			(vertexes[LittleShort(mld->v1)].fX() == vertexes[LittleShort(mld->v2)].fX() &&
-			 vertexes[LittleShort(mld->v1)].fY() == vertexes[LittleShort(mld->v2)].fY()))
+			(level.vertexes[LittleShort(mld->v1)].fX() == level.vertexes[LittleShort(mld->v2)].fX() &&
+			 level.vertexes[LittleShort(mld->v1)].fY() == level.vertexes[LittleShort(mld->v2)].fY()))
 		{
 			Printf ("Removing 0-length line %d\n", i+skipped);
 			memmove (mld, mld+1, sizeof(*mld)*(numlines-i-1));
@@ -2245,15 +2231,16 @@ void P_LoadLineDefs2 (MapData * map)
 		ForceNodeBuild = true;
 	}
 
-	P_AllocateSideDefs (sidecount);
+	P_AllocateSideDefs (map, sidecount);
 
 	mld = (maplinedef2_t *)mldf;
-	ld = lines;
+	ld = &level.lines[0];
 	for (i = 0; i < numlines; i++, mld++, ld++)
 	{
 		int j;
 
 		ld->portalindex = UINT_MAX;
+		ld->portaltransferred = UINT_MAX;
 
 		for (j = 0; j < 5; j++)
 			ld->args[j] = mld->args[j];
@@ -2261,8 +2248,8 @@ void P_LoadLineDefs2 (MapData * map)
 		ld->flags = LittleShort(mld->flags);
 		ld->special = mld->special;
 
-		ld->v1 = &vertexes[LittleShort(mld->v1)];
-		ld->v2 = &vertexes[LittleShort(mld->v2)];
+		ld->v1 = &level.vertexes[LittleShort(mld->v1)];
+		ld->v2 = &level.vertexes[LittleShort(mld->v2)];
 		ld->alpha = 1.;	// [RH] Opaque by default
 
 		P_SetSideNum (&ld->sidedef[0], LittleShort(mld->sidenum[0]));
@@ -2294,26 +2281,22 @@ void P_LoadLineDefs2 (MapData * map)
 //
 // P_LoadSideDefs
 //
-// killough 4/4/98: split into two functions
-void P_LoadSideDefs (MapData * map)
-{
-	numsides = map->Size(ML_SIDEDEFS) / sizeof(mapsidedef_t);
-}
 
-static void P_AllocateSideDefs (int count)
+static void P_AllocateSideDefs (MapData *map, int count)
 {
 	int i;
 
-	sides = new side_t[count];
-	memset (sides, 0, count*sizeof(side_t));
+	level.sides.Alloc(count);
+	memset(&level.sides[0], 0, count * sizeof(side_t));
 
-	sidetemp = new sidei_t[MAX(count,numvertexes)];
+	sidetemp = new sidei_t[MAX<int>(count, level.vertexes.Size())];
 	for (i = 0; i < count; i++)
 	{
 		sidetemp[i].a.special = sidetemp[i].a.tag = 0;
 		sidetemp[i].a.alpha = SHRT_MIN;
 		sidetemp[i].a.map = NO_SIDE;
 	}
+	auto numsides = map->Size(ML_SIDEDEFS) / sizeof(mapsidedef_t);
 	if (count < numsides)
 	{
 		Printf ("Map has %d unused sidedefs\n", numsides - count);
@@ -2334,9 +2317,10 @@ static void P_LoopSidedefs (bool firstloop)
 	{
 		delete[] sidetemp;
 	}
-	sidetemp = new sidei_t[MAX(numvertexes, numsides)];
+	int numsides = level.sides.Size();
+	sidetemp = new sidei_t[MAX<int>(level.vertexes.Size(), numsides)];
 
-	for (i = 0; i < numvertexes; ++i)
+	for (i = 0; i < (int)level.vertexes.Size(); ++i)
 	{
 		sidetemp[i].b.first = NO_SIDE;
 		sidetemp[i].b.next = NO_SIDE;
@@ -2350,17 +2334,17 @@ static void P_LoopSidedefs (bool firstloop)
 	{
 		// For each vertex, build a list of sidedefs that use that vertex
 		// as their left edge.
-		line_t *line = sides[i].linedef;
-		int lineside = (line->sidedef[0] != &sides[i]);
-		int vert = int((lineside ? line->v2 : line->v1) - vertexes);
+		line_t *line = level.sides[i].linedef;
+		int lineside = (line->sidedef[0] != &level.sides[i]);
+		int vert = lineside ? line->v2->Index() : line->v1->Index();
 		
 		sidetemp[i].b.lineside = lineside;
 		sidetemp[i].b.next = sidetemp[vert].b.first;
 		sidetemp[vert].b.first = i;
 
 		// Set each side so that it is the only member of its loop
-		sides[i].LeftSide = NO_SIDE;
-		sides[i].RightSide = NO_SIDE;
+		level.sides[i].LeftSide = NO_SIDE;
+		level.sides[i].RightSide = NO_SIDE;
 	}
 
 	// For each side, find the side that is to its right and set the
@@ -2369,7 +2353,7 @@ static void P_LoopSidedefs (bool firstloop)
 	for (i = 0; i < numsides; ++i)
 	{
 		DWORD right;
-		line_t *line = sides[i].linedef;
+		line_t *line = level.sides[i].linedef;
 
 		// If the side's line only exists in a single sector,
 		// then consider that line to be a self-contained loop
@@ -2381,21 +2365,21 @@ static void P_LoopSidedefs (bool firstloop)
 			if (NULL == rightside)
 			{
 				// There is no right side!
-				if (firstloop) Printf ("Line %d's right edge is unconnected\n", linemap[unsigned(line-lines)]);
+				if (firstloop) Printf ("Line %d's right edge is unconnected\n", linemap[line->Index()]);
 				continue;
 			}
 
-			right = DWORD(rightside - sides);
+			right = rightside->Index();
 		}
 		else
 		{
 			if (sidetemp[i].b.lineside)
 			{
-				right = int(line->v1 - vertexes);
+				right = line->v1->Index();
 			}
 			else
 			{
-				right = int(line->v2 - vertexes);
+				right = line->v2->Index();
 			}
 
 			right = sidetemp[right].b.first;
@@ -2403,7 +2387,7 @@ static void P_LoopSidedefs (bool firstloop)
 			if (right == NO_SIDE)
 			{ 
 				// There is no right side!
-				if (firstloop) Printf ("Line %d's right edge is unconnected\n", linemap[unsigned(line-lines)]);
+				if (firstloop) Printf ("Line %d's right edge is unconnected\n", linemap[line->Index()]);
 				continue;
 			}
 
@@ -2414,7 +2398,7 @@ static void P_LoopSidedefs (bool firstloop)
 				line_t *leftline, *rightline;
 				DAngle ang1, ang2, ang;
 
-				leftline = sides[i].linedef;
+				leftline = level.sides[i].linedef;
 				ang1 = leftline->Delta().Angle();
 				if (!sidetemp[i].b.lineside)
 				{
@@ -2423,9 +2407,9 @@ static void P_LoopSidedefs (bool firstloop)
 
 				while (right != NO_SIDE)
 				{
-					if (sides[right].LeftSide == NO_SIDE)
+					if (level.sides[right].LeftSide == NO_SIDE)
 					{
-						rightline = sides[right].linedef;
+						rightline = level.sides[right].linedef;
 						if (rightline->frontsector != rightline->backsector)
 						{
 							ang2 = rightline->Delta().Angle();
@@ -2450,8 +2434,8 @@ static void P_LoopSidedefs (bool firstloop)
 		}
 		assert((unsigned)i<(unsigned)numsides);
 		assert(right<(unsigned)numsides);
-		sides[i].RightSide = right;
-		sides[right].LeftSide = i;
+		level.sides[i].RightSide = right;
+		level.sides[right].LeftSide = i;
 	}
 
 	// We keep the sidedef init info around until after polyobjects are initialized,
@@ -2607,14 +2591,13 @@ void P_ProcessSideTextures(bool checktranmap, side_t *sd, sector_t *sec, intmaps
 
 void P_LoadSideDefs2 (MapData *map, FMissingTextureTracker &missingtex)
 {
-	int  i;
 	char * msdf = new char[map->Size(ML_SIDEDEFS)];
 	map->Read(ML_SIDEDEFS, msdf);
 
-	for (i = 0; i < numsides; i++)
+	for (unsigned i = 0; i < level.sides.Size(); i++)
 	{
 		mapsidedef_t *msd = ((mapsidedef_t*)msdf) + sidetemp[i].a.map;
-		side_t *sd = sides + i;
+		side_t *sd = &level.sides[i];
 		sector_t *sec;
 
 		// [RH] The Doom renderer ignored the patch y locations when
@@ -2631,7 +2614,7 @@ void P_LoadSideDefs2 (MapData *map, FMissingTextureTracker &missingtex)
 		sd->SetTextureYScale(1.);
 		sd->linedef = NULL;
 		sd->Flags = 0;
-		sd->Index = i;
+		sd->UDMFIndex = i;
 
 		// killough 4/4/98: allow sidedef texture names to be overloaded
 		// killough 4/11/98: refined to allow colormaps to work as wall
@@ -2773,22 +2756,21 @@ static void P_CreateBlockMap ()
 	int bmapwidth, bmapheight;
 	double dminx, dmaxx, dminy, dmaxy;
 	int minx, maxx, miny, maxy;
-	int i;
 	int line;
 
-	if (numvertexes <= 0)
+	if (level.vertexes.Size() == 0)
 		return;
 
 	// Find map extents for the blockmap
-	dminx = dmaxx = vertexes[0].fX();
-	dminy = dmaxy = vertexes[0].fY();
+	dminx = dmaxx = level.vertexes[0].fX();
+	dminy = dmaxy = level.vertexes[0].fY();
 
-	for (i = 1; i < numvertexes; ++i)
+	for (auto &vert : level.vertexes)
 	{
-			 if (vertexes[i].fX() < dminx) dminx = vertexes[i].fX();
-		else if (vertexes[i].fX() > dmaxx) dmaxx = vertexes[i].fX();
-			 if (vertexes[i].fY() < dminy) dminy = vertexes[i].fY();
-		else if (vertexes[i].fY() > dmaxy) dmaxy = vertexes[i].fY();
+			 if (vert.fX() < dminx) dminx = vert.fX();
+		else if (vert.fX() > dmaxx) dmaxx = vert.fX();
+			 if (vert.fY() < dminy) dminy = vert.fY();
+		else if (vert.fY() > dmaxy) dmaxy = vert.fY();
 	}
 
 	minx = int(dminx);
@@ -2808,12 +2790,12 @@ static void P_CreateBlockMap ()
 
 	BlockLists = new TArray<int>[bmapwidth * bmapheight];
 
-	for (line = 0; line < numlines; ++line)
+	for (line = 0; line < (int)level.lines.Size(); ++line)
 	{
-		int x1 = int(lines[line].v1->fX());
-		int y1 = int(lines[line].v1->fY());
-		int x2 = int(lines[line].v2->fX());
-		int y2 = int(lines[line].v2->fY());
+		int x1 = int(level.lines[line].v1->fX());
+		int y1 = int(level.lines[line].v1->fY());
+		int x2 = int(level.lines[line].v2->fX());
+		int y2 = int(level.lines[line].v2->fY());
 		int dx = x2 - x1;
 		int dy = y2 - y1;
 		int bx = (x1 - minx) >> BLOCKBITS;
@@ -2996,7 +2978,7 @@ static bool P_VerifyBlockMap(int count)
 			// scan the list for out-of-range linedef indicies in list
 			for(tmplist = list; *tmplist != -1; tmplist++)
 			{
-				if(*tmplist < 0 || *tmplist >= numlines)
+				if((unsigned)*tmplist >= level.lines.Size())
 				{
 					Printf(PRINT_HIGH, "P_VerifyBlockMap: index >= numlines\n");
 					return false;
@@ -3105,14 +3087,11 @@ static void P_GroupLines (bool buildmap)
 	{
 		subsectors[i].sector = subsectors[i].firstline->sidedef->sector;
 	}
-	if (glsegextras != NULL)
+	for (int i = 0; i < numsubsectors; i++)
 	{
-		for (int i = 0; i < numsubsectors; i++)
+		for (jj = 0; jj < subsectors[i].numlines; ++jj)
 		{
-			for (jj = 0; jj < subsectors[i].numlines; ++jj)
-			{
-				glsegextras[subsectors[i].firstline - segs + jj].Subsector = &subsectors[i];
-			}
+			subsectors[i].firstline[jj].Subsector = &subsectors[i];
 		}
 	}
 	times[0].Unclock();
@@ -3120,9 +3099,9 @@ static void P_GroupLines (bool buildmap)
 	// count number of lines in each sector
 	times[1].Clock();
 	total = 0;
-	for (int i = 0; i < numlines; i++)
+	for (unsigned i = 0; i < level.lines.Size(); i++)
 	{
-		auto li = &lines[i];
+		auto li = &level.lines[i];
 		if (li->frontsector == NULL)
 		{
 			if (!flaggedNoFronts)
@@ -3174,9 +3153,9 @@ static void P_GroupLines (bool buildmap)
 		}
 	}
 
-	for (int i = 0; i < numlines; i++)
+	for (unsigned i = 0; i < level.lines.Size(); i++)
 	{
-		auto li = &lines[i];
+		auto li = &level.lines[i];
 		if (li->frontsector != NULL)
 		{
 			li->frontsector->Lines[linesDoneInEachSector[li->frontsector->Index()]++] = li;
@@ -3393,11 +3372,11 @@ static void P_PrecacheLevel()
 		hitlist[level.sectors[i].GetTexture(sector_t::ceiling).GetIndex()] |= FTextureManager::HIT_Flat;
 	}
 
-	for (i = numsides - 1; i >= 0; i--)
+	for (i = level.sides.Size() - 1; i >= 0; i--)
 	{
-		hitlist[sides[i].GetTexture(side_t::top).GetIndex()] |= FTextureManager::HIT_Wall;
-		hitlist[sides[i].GetTexture(side_t::mid).GetIndex()] |= FTextureManager::HIT_Wall;
-		hitlist[sides[i].GetTexture(side_t::bottom).GetIndex()] |= FTextureManager::HIT_Wall;
+		hitlist[level.sides[i].GetTexture(side_t::top).GetIndex()] |= FTextureManager::HIT_Wall;
+		hitlist[level.sides[i].GetTexture(side_t::mid).GetIndex()] |= FTextureManager::HIT_Wall;
+		hitlist[level.sides[i].GetTexture(side_t::bottom).GetIndex()] |= FTextureManager::HIT_Wall;
 	}
 
 	// Sky texture is always present.
@@ -3431,6 +3410,7 @@ extern polyblock_t **PolyBlockMap;
 
 void P_FreeLevelData ()
 {
+	P_FreeMapDataBackup();
 	interpolator.ClearInterpolations();	// [RH] Nothing to interpolate on a fresh level.
 	Renderer->CleanLevelData();
 	FPolyObj::ClearAllSubsectorLinks(); // can't be done as part of the polyobj deletion process.
@@ -3443,28 +3423,20 @@ void P_FreeLevelData ()
 		wminfo.maxfrags = 0;
 		
 	FBehavior::StaticUnloadModules ();
-	if (vertexes != NULL)
-	{
-		delete[] vertexes;
-		vertexes = NULL;
-	}
-	numvertexes = 0;
 	if (segs != NULL)
 	{
 		delete[] segs;
 		segs = NULL;
 	}
 	numsegs = 0;
-	if (glsegextras != NULL)
-	{
-		delete[] glsegextras;
-		glsegextras = NULL;
-	}
 	if (level.sectors.Size() > 0)
 	{
 		delete[] level.sectors[0].e;
 	}
 	level.sectors.Clear();
+	level.lines.Clear();
+	level.sides.Clear();
+	level.vertexes.Clear();
 
 	if (gamenodes != NULL && gamenodes != nodes)
 	{
@@ -3493,18 +3465,6 @@ void P_FreeLevelData ()
 	numsubsectors = numgamesubsectors = 0;
 	nodes = gamenodes = NULL;
 	numnodes = numgamenodes = 0;
-	if (lines != NULL)
-	{
-		delete[] lines;
-		lines = NULL;
-	}
-	numlines = 0;
-	if (sides != NULL)
-	{
-		delete[] sides;
-		sides = NULL;
-	}
-	numsides = 0;
 
 	if (blockmaplump != NULL)
 	{
@@ -3761,7 +3721,6 @@ void P_SetupLevel (const char *lumpname, int position)
 			times[1].Unclock();
 
 			times[2].Clock();
-			P_LoadSideDefs (map);
 			times[2].Unclock();
 
 			times[3].Clock();
@@ -3925,9 +3884,9 @@ void P_SetupLevel (const char *lumpname, int position)
 		P_GetPolySpots (map, polyspots, anchors);
 		FNodeBuilder::FLevel leveldata =
 		{
-			vertexes, numvertexes,
-			sides, numsides,
-			lines, numlines,
+			&level.vertexes[0], (int)level.vertexes.Size(),
+			&level.sides[0], (int)level.sides.Size(),
+			&level.lines[0], (int)level.lines.Size(),
 			0, 0, 0, 0
 		};
 		leveldata.FindMapBounds ();
@@ -3935,11 +3894,10 @@ void P_SetupLevel (const char *lumpname, int position)
 		// In case a sync critical game mode is started, also build GL nodes to avoid problems
 		// if the different machines' am_textured setting differs.
 		FNodeBuilder builder (leveldata, polyspots, anchors, BuildGLNodes);
-		delete[] vertexes;
 		builder.Extract (nodes, numnodes,
-			segs, glsegextras, numsegs,
+			segs, numsegs,
 			subsectors, numsubsectors,
-			vertexes, numvertexes);
+			level.vertexes);
 		endTime = I_FPSTime ();
 		DPrintf (DMSG_NOTIFY, "BSP generation took %.3f sec (%d segs)\n", (endTime - startTime) * 0.001, numsegs);
 		oldvertextable = builder.GetOldVertexTable();
@@ -4193,18 +4151,7 @@ void P_SetupLevel (const char *lumpname, int position)
 	MapThingsUserDataIndex.Clear();
 	MapThingsUserData.Clear();
 
-	loadsectors.Resize(level.sectors.Size());
-	memcpy(&loadsectors[0], &level.sectors[0], loadsectors.Size() * sizeof(sector_t));
-	loadlines.Resize(numlines);
-	memcpy(&loadlines[0], lines, numlines * sizeof(line_t));
-	loadsides.Resize(numsides);
-	memcpy(&loadsides[0], sides, numsides * sizeof(side_t));
-
-	if (glsegextras != NULL)
-	{
-		delete[] glsegextras;
-		glsegextras = NULL;
-	}
+	P_BackupMapData();
 }
 
 

src/p_setup.h

@@ -150,7 +150,6 @@ struct sidei_t	// [RH] Only keep BOOM sidedef init stuff around for init
 };
 extern sidei_t *sidetemp;
 extern bool hasglnodes;
-extern struct glsegextra_t *glsegextras;
 
 struct FMissingCount
 {

src/p_sight.cpp

@@ -29,6 +29,7 @@
 #include "r_state.h"
 
 #include "stats.h"
+#include "g_levellocals.h"
 
 static FRandom pr_botchecksight ("BotCheckSight");
 static FRandom pr_checksight ("CheckSight");
@@ -116,6 +117,7 @@ public:
 		sightend = t2->PosRelative(task->portalgroup);
 		sightstart.Z += t1->Height * 0.75;
 
+		portalgroup = task->portalgroup;
 		Startfrac = task->Frac;
 		Trace = { sightstart.X, sightstart.Y, sightend.X - sightstart.X, sightend.Y - sightstart.Y };
 		Lastztop = Lastzbottom = sightstart.Z;
@@ -482,7 +484,7 @@ int SightCheck::P_SightBlockLinesIterator (int x, int y)
 
 	for (list = blockmaplump + offset + 1; *list != -1; list++)
 	{
-		if (!P_SightCheckLine (&lines[*list]))
+		if (!P_SightCheckLine (&level.lines[*list]))
 		{
 			if (!portalfound) return 0;
 			else res = -1;
@@ -790,6 +792,7 @@ sightcounts[2]++;
 
 	bool traverseres = P_SightTraverseIntercepts ( );
 	if (itres == -1) return false;	// if the iterator had an early out there was no line of sight. The traverser was only called to collect more portals.
+	if (seeingthing->Sector->PortalGroup != portalgroup) return false;	// We are in a different group than the seeingthing, so this trace cannot determine visibility alone.
 	return traverseres;
 }
 

src/p_slopes.cpp

@@ -38,6 +38,7 @@
 #include "p_lnspec.h"
 #include "p_maputl.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 //===========================================================================
 //
@@ -52,7 +53,7 @@ static void P_SlopeLineToPoint (int lineid, const DVector3 &pos, bool slopeCeil)
 	FLineIdIterator itr(lineid);
 	while ((linenum = itr.Next()) >= 0)
 	{
-		const line_t *line = &lines[linenum];
+		const line_t *line = &level.lines[linenum];
 		sector_t *sec;
 		secplane_t *plane;
 		
@@ -257,9 +258,9 @@ static void P_SetSlopesFromVertexHeights(FMapThing *firstmt, FMapThing *lastmt,
 		{
 			if (mt->info->Special == SMT_VertexFloorZ || mt->info->Special == SMT_VertexCeilingZ)
 			{
-				for (int i = 0; i < numvertexes; i++)
+				for (unsigned i = 0; i < level.vertexes.Size(); i++)
 				{
-					if (vertexes[i].fX() == mt->pos.X && vertexes[i].fY() == mt->pos.Y)
+					if (level.vertexes[i].fX() == mt->pos.X && level.vertexes[i].fY() == mt->pos.Y)
 					{
 						if (mt->info->Special == SMT_VertexFloorZ)
 						{
@@ -277,7 +278,7 @@ static void P_SetSlopesFromVertexHeights(FMapThing *firstmt, FMapThing *lastmt,
 		}
 	}
 
-	for(int i = 0; i < numvertexdatas; i++)
+	for(unsigned i = 0; i < vertexdatas.Size(); i++)
 	{
 		int ii = oldvertextable == NULL ? i : oldvertextable[i];
 
@@ -295,9 +296,8 @@ static void P_SetSlopesFromVertexHeights(FMapThing *firstmt, FMapThing *lastmt,
 	}
 
 	// If vertexdata_t is ever extended for non-slope usage, this will obviously have to be deferred or removed.
-	delete[] vertexdatas;
-	vertexdatas = NULL;
-	numvertexdatas = 0;
+	vertexdatas.Clear();
+	vertexdatas.ShrinkToFit();
 
 	if (vt_found)
 	{
@@ -309,14 +309,14 @@ static void P_SetSlopesFromVertexHeights(FMapThing *firstmt, FMapThing *lastmt,
 			DVector3 vec1, vec2;
 			int vi1, vi2, vi3;
 
-			vi1 = int(sec.Lines[0]->v1 - vertexes);
-			vi2 = int(sec.Lines[0]->v2 - vertexes);
+			vi1 = sec.Lines[0]->v1->Index();
+			vi2 = sec.Lines[0]->v2->Index();
 			vi3 = (sec.Lines[1]->v1 == sec.Lines[0]->v1 || sec.Lines[1]->v1 == sec.Lines[0]->v2)?
-				int(sec.Lines[1]->v2 - vertexes) : int(sec.Lines[1]->v1 - vertexes);
+				sec.Lines[1]->v2->Index() : sec.Lines[1]->v1->Index();
 
-			vt1 = DVector3(vertexes[vi1].fPos(), 0);
-			vt2 = DVector3(vertexes[vi2].fPos(), 0);
-			vt3 = DVector3(vertexes[vi3].fPos(), 0);
+			vt1 = DVector3(level.vertexes[vi1].fPos(), 0);
+			vt2 = DVector3(level.vertexes[vi2].fPos(), 0);
+			vt3 = DVector3(level.vertexes[vi3].fPos(), 0);
 
 			for(int j=0; j<2; j++)
 			{
@@ -329,7 +329,7 @@ static void P_SetSlopesFromVertexHeights(FMapThing *firstmt, FMapThing *lastmt,
 				vt2.Z = h2? *h2 : j==0? sec.GetPlaneTexZ(sector_t::floor) : sec.GetPlaneTexZ(sector_t::ceiling);
 				vt3.Z = h3? *h3 : j==0? sec.GetPlaneTexZ(sector_t::floor) : sec.GetPlaneTexZ(sector_t::ceiling);
 
-				if (P_PointOnLineSidePrecise(vertexes[vi3].fX(), vertexes[vi3].fY(), sec.Lines[0]) == 0)
+				if (P_PointOnLineSidePrecise(level.vertexes[vi3].fX(), level.vertexes[vi3].fY(), sec.Lines[0]) == 0)
 				{
 					vec1 = vt2 - vt3;
 					vec2 = vt1 - vt3;
@@ -359,7 +359,7 @@ static void P_SetSlopesFromVertexHeights(FMapThing *firstmt, FMapThing *lastmt,
 
 				secplane_t *plane = j==0? &sec.floorplane : &sec.ceilingplane;
 
-				double dist = -cross[0] * vertexes[vi3].fX() - cross[1] * vertexes[vi3].fY() - cross[2] * vt3.Z;
+				double dist = -cross[0] * level.vertexes[vi3].fX() - cross[1] * level.vertexes[vi3].fY() - cross[2] * vt3.Z;
 				plane->set(cross[0], cross[1], cross[2], dist);
 			}
 		}
@@ -516,14 +516,14 @@ static void P_AlignPlane(sector_t *sec, line_t *line, int which)
 
 void P_SetSlopes ()
 {
-	int i, s;
+	int s;
 
-	for (i = 0; i < numlines; i++)
+	for (auto &line : level.lines)
 	{
-		if (lines[i].special == Plane_Align)
+		if (line.special == Plane_Align)
 		{
-			lines[i].special = 0;
-			if (lines[i].backsector != NULL)
+			line.special = 0;
+			if (line.backsector != nullptr)
 			{
 				// args[0] is for floor, args[1] is for ceiling
 				//
@@ -531,15 +531,15 @@ void P_SetSlopes ()
 				// then args[0], bits 2-3 are for ceiling.
 				for (s = 0; s < 2; s++)
 				{
-					int bits = lines[i].args[s] & 3;
+					int bits = line.args[s] & 3;
 
 					if (s == 1 && bits == 0)
-						bits = (lines[i].args[0] >> 2) & 3;
+						bits = (line.args[0] >> 2) & 3;
 
 					if (bits == 1)			// align front side to back
-						P_AlignPlane (lines[i].frontsector, lines + i, s);
+						P_AlignPlane (line.frontsector, &line, s);
 					else if (bits == 2)		// align back side to front
-						P_AlignPlane (lines[i].backsector, lines + i, s);
+						P_AlignPlane (line.backsector, &line, s);
 				}
 			}
 		}
@@ -554,9 +554,9 @@ void P_SetSlopes ()
 
 void P_CopySlopes()
 {
-	for (int i = 0; i < numlines; i++)
+	for (auto &line : level.lines)
 	{
-		if (lines[i].special == Plane_Copy)
+		if (line.special == Plane_Copy)
 		{
 			// The args are used for the tags of sectors to copy:
 			// args[0]: front floor
@@ -564,31 +564,31 @@ void P_CopySlopes()
 			// args[2]: back floor
 			// args[3]: back ceiling
 			// args[4]: copy slopes from one side of the line to the other.
-			lines[i].special = 0;
-			for (int s = 0; s < (lines[i].backsector ? 4 : 2); s++)
+			line.special = 0;
+			for (int s = 0; s < (line.backsector ? 4 : 2); s++)
 			{
-				if (lines[i].args[s])
-					P_CopyPlane(lines[i].args[s], 
-					(s & 2 ? lines[i].backsector : lines[i].frontsector), s & 1);
+				if (line.args[s])
+					P_CopyPlane(line.args[s], 
+					(s & 2 ? line.backsector : line.frontsector), s & 1);
 			}
 
-			if (lines[i].backsector != NULL)
+			if (line.backsector != NULL)
 			{
-				if ((lines[i].args[4] & 3) == 1)
+				if ((line.args[4] & 3) == 1)
 				{
-					lines[i].backsector->floorplane = lines[i].frontsector->floorplane;
+					line.backsector->floorplane = line.frontsector->floorplane;
 				}
-				else if ((lines[i].args[4] & 3) == 2)
+				else if ((line.args[4] & 3) == 2)
 				{
-					lines[i].frontsector->floorplane = lines[i].backsector->floorplane;
+					line.frontsector->floorplane = line.backsector->floorplane;
 				}
-				if ((lines[i].args[4] & 12) == 4)
+				if ((line.args[4] & 12) == 4)
 				{
-					lines[i].backsector->ceilingplane = lines[i].frontsector->ceilingplane;
+					line.backsector->ceilingplane = line.frontsector->ceilingplane;
 				}
-				else if ((lines[i].args[4] & 12) == 8)
+				else if ((line.args[4] & 12) == 8)
 				{
-					lines[i].frontsector->ceilingplane = lines[i].backsector->ceilingplane;
+					line.frontsector->ceilingplane = line.backsector->ceilingplane;
 				}
 			}
 		}

src/p_spec.cpp

@@ -70,6 +70,7 @@
 #include "d_player.h"
 #include "p_maputl.h"
 #include "p_blockmap.h"
+#include "g_levellocals.h"
 #ifndef NO_EDATA
 #include "edata.h"
 #endif
@@ -189,7 +190,7 @@ bool P_ActivateLine (line_t *line, AActor *mo, int side, int activationType, DVe
 // end of changed code
 	if (developer >= DMSG_SPAMMY && buttonSuccess)
 	{
-		Printf ("Line special %d activated on line %i\n", special, int(line - lines));
+		Printf ("Line special %d activated on line %i\n", special, line->Index());
 	}
 	return true;
 }
@@ -361,7 +362,7 @@ bool P_PredictLine(line_t *line, AActor *mo, int side, int activationType)
 	// end of changed code
 	if (developer >= DMSG_SPAMMY && buttonSuccess)
 	{
-		Printf("Line special %d predicted on line %i\n", special, int(line - lines));
+		Printf("Line special %d predicted on line %i\n", special, line->Index());
 	}
 	return true;
 }
@@ -790,14 +791,14 @@ DWallLightTransfer::DWallLightTransfer (sector_t *srcSec, int target, BYTE flags
 	FLineIdIterator itr(target);
 	while ((linenum = itr.Next()) >= 0)
 	{
-		if (flags & WLF_SIDE1 && lines[linenum].sidedef[0] != NULL)
+		if (flags & WLF_SIDE1 && level.lines[linenum].sidedef[0] != NULL)
 		{
-			lines[linenum].sidedef[0]->Flags |= wallflags;
+			level.lines[linenum].sidedef[0]->Flags |= wallflags;
 		}
 
-		if (flags & WLF_SIDE2 && lines[linenum].sidedef[1] != NULL)
+		if (flags & WLF_SIDE2 && level.lines[linenum].sidedef[1] != NULL)
 		{
-			lines[linenum].sidedef[1]->Flags |= wallflags;
+			level.lines[linenum].sidedef[1]->Flags |= wallflags;
 		}
 	}
 	ChangeStatNum(STAT_LIGHTTRANSFER);
@@ -821,7 +822,7 @@ void DWallLightTransfer::DoTransfer (short lightlevel, int target, BYTE flags)
 	FLineIdIterator itr(target);
 	while ((linenum = itr.Next()) >= 0)
 	{
-		line_t *line = &lines[linenum];
+		line_t *line = &level.lines[linenum];
 
 		if (flags & WLF_SIDE1 && line->sidedef[0] != NULL)
 		{
@@ -958,42 +959,42 @@ static void CopyPortal(int sectortag, int plane, unsigned pnum, double alpha, bo
 		SetPortal(&level.sectors[s], plane, pnum, alpha);
 	}
 
-	for (int j=0;j<numlines;j++)
+	for (auto &line : level.lines)
 	{
 		// Check if this portal needs to be copied to other sectors
 		// This must be done here to ensure that it gets done only after the portal is set up
-		if (lines[j].special == Sector_SetPortal &&
-			lines[j].args[1] == 1 &&
-			(lines[j].args[2] == plane || lines[j].args[2] == 3) &&
-			lines[j].args[3] == sectortag)
+		if (line.special == Sector_SetPortal &&
+			line.args[1] == 1 &&
+			(line.args[2] == plane || line.args[2] == 3) &&
+			line.args[3] == sectortag)
 		{
-			if (lines[j].args[0] == 0)
+			if (line.args[0] == 0)
 			{
-				SetPortal(lines[j].frontsector, plane, pnum, alpha);
+				SetPortal(line.frontsector, plane, pnum, alpha);
 			}
 			else
 			{
-				FSectorTagIterator itr(lines[j].args[0]);
+				FSectorTagIterator itr(line.args[0]);
 				while ((s = itr.Next()) >= 0)
 				{
 					SetPortal(&level.sectors[s], plane, pnum, alpha);
 				}
 			}
 		}
-		if (tolines && lines[j].special == Sector_SetPortal &&
-			lines[j].args[1] == 5 &&
-			lines[j].args[3] == sectortag)
+		if (tolines && line.special == Sector_SetPortal &&
+			line.args[1] == 5 &&
+			line.args[3] == sectortag)
 		{
-			if (lines[j].args[0] == 0)
+			if (line.args[0] == 0)
 			{
-				lines[j].portaltransferred = pnum;
+				line.portaltransferred = pnum;
 			}
 			else
 			{
-				FLineIdIterator itr(lines[j].args[0]);
+				FLineIdIterator itr(line.args[0]);
 				while ((s = itr.Next()) >= 0)
 				{
-					lines[s].portaltransferred = pnum;
+					level.lines[s].portaltransferred = pnum;
 				}
 			}
 		}
@@ -1004,20 +1005,20 @@ static void CopyPortal(int sectortag, int plane, unsigned pnum, double alpha, bo
 void P_SpawnPortal(line_t *line, int sectortag, int plane, int bytealpha, int linked)
 {
 	if (plane < 0 || plane > 2 || (linked && plane == 2)) return;
-	for (int i=0;i<numlines;i++)
+	for (auto &oline : level.lines)
 	{
 		// We must look for the reference line with a linear search unless we want to waste the line ID for it
 		// which is not a good idea.
-		if (lines[i].special == Sector_SetPortal &&
-			lines[i].args[0] == sectortag &&
-			lines[i].args[1] == linked &&
-			lines[i].args[2] == plane &&
-			lines[i].args[3] == 1)
+		if (oline.special == Sector_SetPortal &&
+			oline.args[0] == sectortag &&
+			oline.args[1] == linked &&
+			oline.args[2] == plane &&
+			oline.args[3] == 1)
 		{
 			// beware of overflows.
 			DVector2 pos1 = line->v1->fPos() + line->Delta() / 2;
-			DVector2 pos2 = lines[i].v1->fPos() + lines[i].Delta() / 2;
-			unsigned pnum = P_GetPortal(linked ? PORTS_LINKEDPORTAL : PORTS_PORTAL, plane, line->frontsector, lines[i].frontsector, pos2 - pos1);
+			DVector2 pos2 = oline.v1->fPos() + oline.Delta() / 2;
+			unsigned pnum = P_GetPortal(linked ? PORTS_LINKEDPORTAL : PORTS_PORTAL, plane, line->frontsector, oline.frontsector, pos2 - pos1);
 			CopyPortal(sectortag, plane, pnum, bytealpha / 255., false);
 			return;
 		}
@@ -1266,9 +1267,9 @@ void P_SpawnSpecials (void)
 		P_SpawnSkybox(pt2);
 	}
 
-	for (int i = 0; i < numlines; i++)
+	for (auto &line : level.lines)
 	{
-		switch (lines[i].special)
+		switch (line.special)
 		{
 			int s;
 			sector_t *sec;
@@ -1277,16 +1278,16 @@ void P_SpawnSpecials (void)
 		// support for drawn heights coming from different sector
 		case Transfer_Heights:
 			{
-				sec = lines[i].frontsector;
-				if (lines[i].args[1] & 2)
+				sec = line.frontsector;
+				if (line.args[1] & 2)
 				{
 					sec->MoreFlags |= SECF_FAKEFLOORONLY;
 				}
-				if (lines[i].args[1] & 4)
+				if (line.args[1] & 4)
 				{
 					sec->MoreFlags |= SECF_CLIPFAKEPLANES;
 				}
-				if (lines[i].args[1] & 8)
+				if (line.args[1] & 8)
 				{
 					sec->MoreFlags |= SECF_UNDERWATER;
 				}
@@ -1294,15 +1295,15 @@ void P_SpawnSpecials (void)
 				{
 					sec->MoreFlags |= SECF_FORCEDUNDERWATER;
 				}
-				if (lines[i].args[1] & 16)
+				if (line.args[1] & 16)
 				{
 					sec->MoreFlags |= SECF_IGNOREHEIGHTSEC;
 				}
-				if (lines[i].args[1] & 32)
+				if (line.args[1] & 32)
 				{
 					sec->MoreFlags |= SECF_NOFAKELIGHT;
 				}
-				FSectorTagIterator itr(lines[i].args[0]);
+				FSectorTagIterator itr(line.args[0]);
 				while ((s = itr.Next()) >= 0)
 				{
 					level.sectors[s].heightsec = sec;
@@ -1315,29 +1316,29 @@ void P_SpawnSpecials (void)
 		// killough 3/16/98: Add support for setting
 		// floor lighting independently (e.g. lava)
 		case Transfer_FloorLight:
-			new DLightTransfer (lines[i].frontsector, lines[i].args[0], true);
+			new DLightTransfer (line.frontsector, line.args[0], true);
 			break;
 
 		// killough 4/11/98: Add support for setting
 		// ceiling lighting independently
 		case Transfer_CeilingLight:
-			new DLightTransfer (lines[i].frontsector, lines[i].args[0], false);
+			new DLightTransfer (line.frontsector, line.args[0], false);
 			break;
 
 		// [Graf Zahl] Add support for setting lighting
 		// per wall independently
 		case Transfer_WallLight:
-			new DWallLightTransfer (lines[i].frontsector, lines[i].args[0], lines[i].args[1]);
+			new DWallLightTransfer (line.frontsector, line.args[0], line.args[1]);
 			break;
 
 		case Sector_Attach3dMidtex:
-			P_Attach3dMidtexLinesToSector(lines[i].frontsector, lines[i].args[0], lines[i].args[1], !!lines[i].args[2]);
+			P_Attach3dMidtexLinesToSector(line.frontsector, line.args[0], line.args[1], !!line.args[2]);
 			break;
 
 		case Sector_SetLink:
-			if (lines[i].args[0] == 0)
+			if (line.args[0] == 0)
 			{
-				P_AddSectorLinks(lines[i].frontsector, lines[i].args[1], lines[i].args[2], lines[i].args[3]);
+				P_AddSectorLinks(line.frontsector, line.args[1], line.args[2], line.args[3]);
 			}
 			break;
 
@@ -1355,30 +1356,29 @@ void P_SpawnSpecials (void)
 			// arg 2 = 0:floor, 1:ceiling, 2:both
 			// arg 3 = 0: anchor, 1: reference line
 			// arg 4 = for the anchor only: alpha
-			if ((lines[i].args[1] == 0 || lines[i].args[1] == 6) && lines[i].args[3] == 0)
+			if ((line.args[1] == 0 || line.args[1] == 6) && line.args[3] == 0)
 			{
-				P_SpawnPortal(&lines[i], lines[i].args[0], lines[i].args[2], lines[i].args[4], lines[i].args[1]);
+				P_SpawnPortal(&line, line.args[0], line.args[2], line.args[4], line.args[1]);
 			}
-			else if (lines[i].args[1] == 3 || lines[i].args[1] == 4)
+			else if (line.args[1] == 3 || line.args[1] == 4)
 			{
-				line_t *line = &lines[i];
-				unsigned pnum = P_GetPortal(line->args[1] == 3 ? PORTS_PLANE : PORTS_HORIZON, line->args[2], line->frontsector, NULL, { 0,0 });
-				CopyPortal(line->args[0], line->args[2], pnum, 0, true);
+				unsigned pnum = P_GetPortal(line.args[1] == 3 ? PORTS_PLANE : PORTS_HORIZON, line.args[2], line.frontsector, NULL, { 0,0 });
+				CopyPortal(line.args[0], line.args[2], pnum, 0, true);
 			}
 			break;
 
 		case Line_SetPortal:
-			P_SpawnLinePortal(&lines[i]);
+			P_SpawnLinePortal(&line);
 			break;
 
 		// [RH] ZDoom Static_Init settings
 		case Static_Init:
-			switch (lines[i].args[1])
+			switch (line.args[1])
 			{
 			case Init_Gravity:
 				{
-					double grav = lines[i].Delta().Length() / 100.;
-					FSectorTagIterator itr(lines[i].args[0]);
+					double grav = line.Delta().Length() / 100.;
+					FSectorTagIterator itr(line.args[0]);
 					while ((s = itr.Next()) >= 0)
 						level.sectors[s].gravity = grav;
 				}
@@ -1389,8 +1389,8 @@ void P_SpawnSpecials (void)
 
 			case Init_Damage:
 				{
-					int damage = int(lines[i].Delta().Length());
-					FSectorTagIterator itr(lines[i].args[0]);
+					int damage = int(line.Delta().Length());
+					FSectorTagIterator itr(line.args[0]);
 					while ((s = itr.Next()) >= 0)
 					{
 						sector_t *sec = &level.sectors[s];
@@ -1416,8 +1416,8 @@ void P_SpawnSpecials (void)
 				break;
 
 			case Init_SectorLink:
-				if (lines[i].args[3] == 0)
-					P_AddSectorLinksByID(lines[i].frontsector, lines[i].args[0], lines[i].args[2]);
+				if (line.args[3] == 0)
+					P_AddSectorLinksByID(line.frontsector, line.args[0], line.args[2]);
 				break;
 
 			// killough 10/98:
@@ -1431,9 +1431,9 @@ void P_SpawnSpecials (void)
 
 			case Init_TransferSky:
 				{
-					FSectorTagIterator itr(lines[i].args[0]);
+					FSectorTagIterator itr(line.args[0]);
 					while ((s = itr.Next()) >= 0)
-						level.sectors[s].sky = (i + 1) | PL_SKYFLAT;
+						level.sectors[s].sky = (line.Index() + 1) | PL_SKYFLAT;
 					break;
 				}
 			}
@@ -1499,10 +1499,9 @@ void P_SpawnSpecials (void)
 
 static void P_SpawnFriction(void)
 {
-	int i;
-	line_t *l = lines;
+	line_t *l = &level.lines[0];
 
-	for (i = 0 ; i < numlines ; i++,l++)
+	for (unsigned i = 0 ; i < level.lines.Size() ; i++,l++)
 	{
 		if (l->special == Sector_SetFriction)
 		{

src/p_tags.cpp

@@ -36,6 +36,7 @@
 
 #include "p_tags.h"
 #include "c_dispatch.h"
+#include "g_levellocals.h"
 
 FTagManager tagManager;
 
@@ -45,17 +46,6 @@ FTagManager tagManager;
 //
 //-----------------------------------------------------------------------------
 
-static inline int lineindex(const line_t *line)
-{
-	return (int)(intptr_t)(line - lines);
-}
-
-//-----------------------------------------------------------------------------
-//
-//
-//
-//-----------------------------------------------------------------------------
-
 void FTagManager::AddSectorTag(int sector, int tag)
 {
 	if (tag == 0) return;
@@ -244,7 +234,7 @@ bool FTagManager::SectorHasTag(const sector_t *sector, int tag) const
 
 int FTagManager::GetFirstLineID(const line_t *line) const
 {
-	int i = lineindex(line);
+	int i = line->Index();
 	return LineHasIDs(i) ? allIDs[startForLine[i]].tag : 0;
 }
 
@@ -276,7 +266,7 @@ bool FTagManager::LineHasID(int i, int tag) const
 
 bool FTagManager::LineHasID(const line_t *line, int tag) const
 {
-	return LineHasID(lineindex(line), tag);
+	return LineHasID(line->Index(), tag);
 }
 
 //-----------------------------------------------------------------------------

src/p_teleport.cpp

@@ -38,6 +38,7 @@
 #include "p_maputl.h"
 #include "r_utility.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 #define FUDGEFACTOR		10
 
@@ -447,10 +448,10 @@ bool EV_SilentLineTeleport (line_t *line, int side, AActor *thing, int id, INTBO
 	FLineIdIterator itr(id);
 	while ((i = itr.Next()) >= 0)
 	{
-		if (line-lines == i)
+		if (line->Index() == i)
 			continue;
 
-		if ((l=lines+i) != line && l->backsector)
+		if ((l=&level.lines[i]) != line && l->backsector)
 		{
 			// Get the thing's position along the source linedef
 			double pos;

src/p_things.cpp

@@ -51,6 +51,7 @@
 #include "p_spec.h"
 #include "math/cmath.h"
 #include "actorptrselect.h"
+#include "g_levellocals.h"
 
 // Set of spawnable things for the Thing_Spawn and Thing_Projectile specials.
 FClassMap SpawnableThings;

src/p_tick.cpp

@@ -35,6 +35,7 @@
 #include "g_level.h"
 #include "r_utility.h"
 #include "p_spec.h"
+#include "g_levellocals.h"
 
 extern gamestate_t wipegamestate;