Merge branch 'master' of https://github.com/rheit/zdoom

specs/udmf_zdoom.txt

@@ -113,6 +113,7 @@ Note: All <bool> fields default to false unless mentioned otherwise.
       blockprojectiles = <bool>;// Line blocks all projectiles
       blockuse = <bool>;        // Line blocks all use actions
       blocksight = <bool>;      // Line blocks monster line of sight
+      blockhitscan = <bool>;    // Line blocks hitscan attacks
       locknumber = <int>;       // Line special is locked
       arg0str = <string>;       // Alternate string-based version of arg0
 
@@ -204,6 +205,8 @@ Note: All <bool> fields default to false unless mentioned otherwise.
                                 // Parameter is the conversation ID, 0 meaning none.
       countsecret = <bool>;     // Picking up this actor counts as a secret.
       arg0str = <string>;       // Alternate string-based version of arg0
+	  gravity = <float>;		// Set per-actor gravity. Positive values are multiplied with the class's property, 
+	                            // negative values are used as their absolute. Default = 1.0.
 
       * Note about arg0str
 

src/actor.h

@@ -268,7 +268,7 @@ enum
 	MF5_DONTDRAIN		= 0x00000001,	// cannot be drained health from.
 	/*					= 0x00000002,	*/
 	MF5_NODROPOFF		= 0x00000004,	// cannot drop off under any circumstances.
-	/*					= 0x00000008,	*/
+	MF5_NOFORWARDFALL	= 0x00000008,	// Does not make any actor fall forward by being damaged by this
 	MF5_COUNTSECRET		= 0x00000010,	// From Doom 64: actor acts like a secret
 	MF5_AVOIDINGDROPOFF = 0x00000020,	// Used to move monsters away from dropoffs
 	MF5_NODAMAGE		= 0x00000040,	// Actor can be shot and reacts to being shot but takes no damage

src/doomdata.h

@@ -153,6 +153,7 @@ enum ELineFlags
 	ML_BLOCKPROJECTILE			= 0x01000000,
 	ML_BLOCKUSE					= 0x02000000,	// blocks all use actions through this line
 	ML_BLOCKSIGHT				= 0x04000000,	// blocks monster line of sight
+	ML_BLOCKHITSCAN				= 0x08000000,	// blocks hitscan attacks
 };
 
 
@@ -342,6 +343,7 @@ struct FMapThing
 	int			special;
 	int			args[5];
 	int			Conversation;
+	fixed_t		gravity;
 
 	void Serialize (FArchive &);
 };

src/namedef.h

@@ -465,6 +465,7 @@ xx(blockprojectiles)
 xx(blockuse)
 xx(hidden)
 xx(blocksight)
+xx(blockhitscan)
 
 xx(Renderstyle)
 

src/p_buildmap.cpp

@@ -698,6 +698,7 @@ static int LoadSprites (spritetype *sprites, Xsprite *xsprites, int numsprites,
 		mapthings[count].SkillFilter = 0xffff;
 		mapthings[count].flags = MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH;
 		mapthings[count].special = 0;
+		mapthings[count].gravity = FRACUNIT;
 
 		if (xsprites != NULL && sprites[i].lotag == 710)
 		{ // Blood ambient sound

src/p_interaction.cpp

@@ -1143,7 +1143,9 @@ int P_DamageMobj (AActor *target, AActor *inflictor, AActor *source, int damage,
 				 && (pr_damagemobj()&1)
 				 // [RH] But only if not too fast and not flying
 				 && thrust < 10*FRACUNIT
-				 && !(target->flags & MF_NOGRAVITY))
+				 && !(target->flags & MF_NOGRAVITY)
+				 && (inflictor == NULL || !(inflictor->flags5 & MF5_NOFORWARDFALL))
+				 )
 			{
 				ang += ANG180;
 				thrust *= 4;

src/p_lnspec.cpp

@@ -2545,6 +2545,7 @@ FUNC(LS_Line_SetBlocking)
 		ML_RAILING,
 		ML_BLOCKUSE,
 		ML_BLOCKSIGHT,
+		ML_BLOCKHITSCAN,
 		-1
 	};
 

src/p_map.cpp

@@ -3563,7 +3563,7 @@ AActor *P_LineAttack (AActor *t1, angle_t angle, fixed_t distance,
 	else tflags = TRACE_NoSky|TRACE_Impact;
 
 	if (!Trace (t1->x, t1->y, shootz, t1->Sector, vx, vy, vz, distance,
-		MF_SHOOTABLE, ML_BLOCKEVERYTHING, t1, trace,
+		MF_SHOOTABLE, ML_BLOCKEVERYTHING|ML_BLOCKHITSCAN, t1, trace,
 		tflags, hitGhosts ? CheckForGhost : CheckForSpectral))
 	{ // hit nothing
 		if (puffDefaults == NULL)

src/p_mobj.cpp

@@ -4712,6 +4712,10 @@ AActor *P_SpawnMapThing (FMapThing *mthing, int position)
 	mobj->SpawnPoint[2] = mthing->z;
 	mobj->SpawnAngle = mthing->angle;
 	mobj->SpawnFlags = mthing->flags;
+	if (mthing->gravity < 0) mobj->gravity = -mthing->gravity;
+	else if (mthing->gravity > 0) mobj->gravity = FixedMul(mobj->gravity, mthing->gravity);
+	else mobj->flags &= ~MF_NOGRAVITY;
+
 	P_FindFloorCeiling(mobj, FFCF_SAMESECTOR | FFCF_ONLY3DFLOORS | FFCF_3DRESTRICT);
 
 	if (!(mobj->flags2 & MF2_ARGSDEFINED))

src/p_setup.cpp

@@ -1750,6 +1750,7 @@ void P_LoadThings (MapData * map)
 
 		memset (&mti[i], 0, sizeof(mti[i]));
 
+		mti[i].gravity = FRACUNIT;
 		mti[i].Conversation = 0;
 		mti[i].SkillFilter = MakeSkill(flags);
 		mti[i].ClassFilter = 0xffff;	// Doom map format doesn't have class flags so spawn for all player classes
@@ -1825,6 +1826,7 @@ void P_LoadThings2 (MapData * map)
 		mti[i].ClassFilter = (mti[i].flags & MTF_CLASS_MASK) >> MTF_CLASS_SHIFT;
 		mti[i].flags &= ~(MTF_SKILLMASK|MTF_CLASS_MASK);
 		mti[i].Conversation = 0;
+		mti[i].gravity = FRACUNIT;
 	}
 	delete[] mtp;
 }

src/p_udmf.cpp

@@ -475,6 +475,7 @@ public:
 		FString arg0str, arg1str;
 
 		memset(th, 0, sizeof(*th));
+		th->gravity = FRACUNIT;
 		sc.MustGetToken('{');
 		while (!sc.CheckToken('}'))
 		{
@@ -515,6 +516,11 @@ public:
 				th->special = CheckInt(key);
 				break;
 
+			case NAME_Gravity:
+				CHECK_N(Zd | Zdt)
+				th->gravity = CheckFixed(key);
+				break;
+
 			case NAME_Arg0:
 			case NAME_Arg1:
 			case NAME_Arg2:
@@ -921,6 +927,10 @@ public:
 				Flag(ld->flags, ML_BLOCKSIGHT, key); 
 				continue;
 			
+			case NAME_blockhitscan:
+				Flag(ld->flags, ML_BLOCKHITSCAN, key); 
+				continue;
+			
 			// [Dusk] lock number
 			case NAME_Locknumber:
 				ld->locknumber = CheckInt(key);

src/thingdef/thingdef_data.cpp

@@ -184,6 +184,7 @@ static FFlagDef ActorFlags[]=
 
 	DEFINE_FLAG(MF5, DONTDRAIN, AActor, flags5),
 	DEFINE_FLAG(MF5, NODROPOFF, AActor, flags5),
+	DEFINE_FLAG(MF5, NOFORWARDFALL, AActor, flags5),
 	DEFINE_FLAG(MF5, COUNTSECRET, AActor, flags5),
 	DEFINE_FLAG(MF5, NODAMAGE, AActor, flags5),
 	DEFINE_FLAG(MF5, BLOODSPLATTER, AActor, flags5),