- added render workaround for CP07.

source/core/maphack.cpp

@@ -37,6 +37,7 @@
 #include "printf.h"
 #include "c_dispatch.h"
 #include "md4.h"
+#include "hw_sections.h"
 
 static TArray<usermaphack_t> usermaphacks;
 TArray<int> blockingpairs[MAXWALLS];
@@ -173,6 +174,16 @@ static int32_t LoadMapHack(const char *filename)
                 wall[currentwall].overpicnum = sc.Number;
             }
         }
+        else if (sc.Compare("split"))
+        {
+            int start = -1, end = -1;
+            if (sc.CheckNumber()) start = sc.Number;
+            if (sc.CheckNumber()) end = sc.Number;
+            if (end >= 0 && validateSector())
+            {
+                hw_SetSplitSector(currentsector, start, end);
+            }
+        }
         else if (sc.Compare("clearflags"))
         {
             if (currentsector != -1 && validateSector())

source/core/maploader.cpp

@@ -453,6 +453,8 @@ void engineLoadBoard(const char* filename, int flags, vec3_t* pos, int16_t* ang,
 	G_LoadMapHack(filename, md4);
 	setWallSectors();
 	hw_BuildSections();
+	sectorGeometry.SetSize(numsections);
+
 
 	memcpy(wallbackup, wall, sizeof(wallbackup));
 	memcpy(sectorbackup, sector, sizeof(sectorbackup));
@@ -491,5 +493,4 @@ void setWallSectors()
 			wall[sector[i].wallptr + w].sector = i;
 		}
 	}
-	sectorGeometry.SetSize(numsectors);
 }

source/core/rendering/hw_sections.cpp

@@ -48,6 +48,10 @@ TArray<int> sectionspersector[MAXSECTORS];	// reverse map, mainly for the automa
 int numsections;
 int numsectionlines;
 
+void hw_SplitSector(int sector, int startpos, int endpos);
+
+TArray<int> splits;
+
 
 void hw_BuildSections()
 {
@@ -72,4 +76,146 @@ void hw_BuildSections()
 		sectionspersector[i].Resize(1);
 		sectionspersector[i][0] = i;
 	}
-}
+
+	for (unsigned i = 0; i < splits.Size(); i += 3)
+		hw_SplitSector(splits[i], splits[i + 1], splits[i + 2]);
+}
+
+
+static void SplitSection(int section, int start, int end)
+{
+	// note: to do this, the sector's lines must be well ordered and there must only be one outline and no holes.
+	// This also can only apply a single split to a given sector.
+	int firstsection = numsections++;
+	int secondsection = numsections++;
+
+	auto& sect = sections[section];
+	Section* sect1 = &sections[firstsection];
+	Section* sect2 = &sections[secondsection];
+	sect1->sector = sect.sector;
+	sect2->sector = sect.sector;
+	sect1->lines.Clear();
+	sect2->lines.Clear();
+	for (int aline : sect.lines)
+	{
+		int line = sectionLines[aline].wall;
+		if (line < start || line >= end)
+		{
+			sect1->lines.Push(aline);
+		}
+		if (line == start)
+		{
+			sect1->lines.Push(-1);
+			sect2->lines.Push(-1);
+		}
+		if (line >= start && line < end)
+		{
+			sect2->lines.Push(aline);
+		}
+	}
+
+	int firstnewline = numsectionlines;
+	int thisline = numsectionlines;
+	int splitline1, splitline2;
+	//numsectionlines += sect1->lines.Size() + 1;
+	for (unsigned i = 0; i < sect1->lines.Size(); i++)//  auto& sline : sect1->lines)
+	{
+		int sline = sect1->lines[i];
+		sect1->lines[i] = thisline;
+		if (sline != -1)
+		{
+			SectionLine& newline = sectionLines[thisline];
+			newline = sectionLines[sline];
+			newline.section = int16_t(sect1 - sections);
+			if (i != sect1->lines.Size() - 1) newline.point2index = thisline + 1 - firstnewline;
+			else newline.point2index = 0;
+			assert(newline.point2index >= 0);
+
+			// relink the partner
+			auto& partnerline = sectionLines[newline.partner];
+			partnerline.partner = thisline;
+			partnerline.partnersection = newline.section;
+			thisline++;
+		}
+		else
+		{
+			splitline1 = thisline++;
+			sectionLines[splitline1].wall = -1;
+			sectionLines[splitline1].section = int16_t(sect1 - sections);
+			sectionLines[splitline1].partnersection = int16_t(sect2 - sections);
+			sectionLines[splitline1].startpoint = start;
+			sectionLines[splitline1].endpoint = end;
+			sectionLines[splitline1].point2index = splitline1 + 1 - firstnewline;
+		}
+	}
+
+	firstnewline = thisline;
+	for (unsigned i = 0; i < sect2->lines.Size(); i++)//  auto& sline : sect1->lines)
+	{
+		int sline = sect2->lines[i];
+		sect2->lines[i] = thisline;
+		if (sline != -1)
+		{
+			SectionLine& newline = sectionLines[thisline];
+			newline = sectionLines[sline];
+			newline.section = int16_t(sect2 - sections);
+			if (i != sect2->lines.Size() - 1) newline.point2index = thisline + 1 - firstnewline;
+			else newline.point2index = 0;
+			assert(newline.point2index >= 0);
+
+			// relink the partner
+			auto& partnerline = sectionLines[newline.partner];
+			partnerline.partner = thisline;
+			partnerline.partnersection = newline.section;
+			thisline++;
+		}
+		else
+		{
+			splitline2 = thisline++;
+			sectionLines[splitline2].wall = -1;
+			sectionLines[splitline2].section = int16_t(sect2 - sections);
+			sectionLines[splitline2].partnersection = int16_t(sect1 - sections);
+			sectionLines[splitline2].startpoint = end;
+			sectionLines[splitline2].endpoint = start;
+			sectionLines[splitline2].point2index = splitline2 + 1 - firstnewline;
+		}
+	}
+	sectionLines[splitline1].partner = splitline2;
+	sectionLines[splitline2].partner = splitline1;
+
+	sectionspersector[sect.sector].Resize(2);
+	sectionspersector[sect.sector][0] = int16_t(sect1 - sections);
+	sectionspersector[sect.sector][1] = int16_t(sect2 - sections);
+}
+
+void hw_SplitSector(int sectnum, int start, int end)
+{
+	int wallstart = sector[sectnum].wallptr;
+	int wallend = wallstart + sector[sectnum].wallnum;
+	if (start < wallstart || start >= wallend || end < wallstart || end >= wallend || end < start) return;
+
+	for (unsigned i = 0; i < sectionspersector[sectnum].Size(); i++)
+	{
+		int sect = sectionspersector[sectnum][i];
+		bool foundstart = false, foundend = false;
+		for (int aline : sections[sect].lines)
+		{
+			int line = sectionLines[aline].wall;
+			if (line == start) foundstart = true;
+			if (line == end) foundend = true;
+		}
+		if (foundstart && foundend)
+		{
+			sectionspersector->Delete(i);
+			SplitSection(sect, start, end);
+			return;
+		}
+	}
+}
+
+void hw_SetSplitSector(int sectnum, int start, int end)
+{
+	splits.Push(sectnum);
+	splits.Push(start);
+	splits.Push(end);
+}

source/core/rendering/hw_sections.h

@@ -29,3 +29,4 @@ extern int numsectionlines;
 
 
 void hw_BuildSections();
+void hw_SetSplitSector(int sector, int startpos, int endpos);

source/core/rendering/scene/hw_bunchdrawer.cpp

@@ -283,24 +283,27 @@ void BunchDrawer::ProcessBunch(int bnch)
 
 		if (clipped & CL_Draw)
 		{
-			for (auto p : blockingpairs[i]) blockwall.Set(sectionLines[p].wall);
-			show2dwall.Set(sectionLines[i].wall);
-
-			if (!gotwall[i])
+			int ww = sectionLines[i].wall;
+			if (ww != -1)
 			{
-				gotwall.Set(i);
-				ClipWall.Unclock();
-				Bsp.Unclock();
-				SetupWall.Clock();
+				for (auto p : blockingpairs[ww]) blockwall.Set(sectionLines[p].wall);
+				show2dwall.Set(ww);
 
-				HWWall hwwall;
-				int j = sectionLines[i].wall;
-				hwwall.Process(di, &wall[j], &sector[bunch->sectnum], wall[j].nextsector < 0 ? nullptr : &sector[wall[j].nextsector]);
-				rendered_lines++;
+				if (!gotwall[i])
+				{
+					gotwall.Set(i);
+					ClipWall.Unclock();
+					Bsp.Unclock();
+					SetupWall.Clock();
 
-				SetupWall.Unclock();
-				Bsp.Clock();
-				ClipWall.Clock();
+					HWWall hwwall;
+					hwwall.Process(di, &wall[ww], &sector[bunch->sectnum], wall[ww].nextsector < 0 ? nullptr : &sector[wall[ww].nextsector]);
+					rendered_lines++;
+
+					SetupWall.Unclock();
+					Bsp.Clock();
+					ClipWall.Clock();
+				}
 			}
 		}
 

source/core/savegamehelp.cpp

@@ -58,6 +58,7 @@
 #include "gamefuncs.h"
 #include "render.h"
 #include "hw_sections.h"
+#include "sectorgeometry.h"
 #include <zlib.h>
 
 
@@ -641,6 +642,7 @@ void SerializeMap(FSerializer& arc)
 	{
 		setWallSectors();
 		hw_BuildSections();
+		sectorGeometry.SetSize(numsections);
 	}
 }
 

source/games/blood/src/db.cpp

@@ -33,6 +33,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #include "raze_sound.h"
 #include "gamefuncs.h"
 #include "hw_sections.h"
+#include "sectorgeometry.h"
 
 #include "blood.h"
 
@@ -1069,6 +1070,7 @@ void dbLoadMap(const char *pPath, int *pX, int *pY, int *pZ, short *pAngle, shor
 
     setWallSectors();
     hw_BuildSections();
+    sectorGeometry.SetSize(numsections);
     memcpy(wallbackup, wall, sizeof(wallbackup));
     memcpy(sectorbackup, sector, sizeof(sectorbackup));
 }

wadsrc/static/engine/compatibility/c3bfb6a6e7cded2e5fe16cea86632d79.mhk

@@ -0,0 +1,2 @@
+// CP07 sector bleeds into another area.
+sector 33 split 192 196