- added ML_BLOCKPROJECTILE flag to lines.

SVN r1440 (trunk)

docs/rh-log.txt

@@ -1,4 +1,5 @@
 February 22, 2009  (Changes by Graf Zahl)
+- added ML_BLOCKPROJECTILE flag to lines.
 - Fixed: With opl_onechip set the second OPL chip was never set to anything valid
   so it contained an invalid pointer. There were also a few other places that
   simply assumed that the second chip is set to something valid.

specs/udmf_zdoom.txt

@@ -1,5 +1,5 @@
 ===============================================================================
-Universal Doom Map Format ZDoom extensions v1.2 - 21.08.2008
+Universal Doom Map Format ZDoom extensions v1.5 - 22.02.2009
 
 
     Copyright (c) 2008 Christoph Oelckers.
@@ -102,6 +102,7 @@ Note: All <bool> fields default to false unless mentioned otherwise.
       wrapmidtex = <bool>;      // Line's mid textures are wrapped.
       midtex3d = <bool>;        // Actors can walk on mid texture.
       checkswitchrange = <bool>;// Switches can only be activated when vertically reachable.
+      blockprojectiles = <bool>;// Line blocks all projectiles
                     
    }
    
@@ -200,6 +201,7 @@ Note: All <bool> fields default to false unless mentioned otherwise.
    Bit 4 (Value  16): wrapmidtex
    Bit 5 (Value  32): midtex3d
    Bit 6 (Value  64): checkswitchrange
+   Bit 7 (Value 128): firstsideonly
    
    When used in special 208 this arg should be cleared afterward.
    
@@ -229,6 +231,8 @@ integer, not float
 Changed description of class and skill thing flags to avoid the impression that
 this uses array syntax. No functional changes
 
+1.5 22.02.2009
+Added blockprojectiles to lines and firstsideonly to conversion notes
 
 ===============================================================================
 EOF

src/doomdata.h

@@ -149,6 +149,7 @@ enum ELineFlags
 	ML_3DMIDTEX					= 0x00200000,
 	ML_CHECKSWITCHRANGE			= 0x00400000,
 	ML_FIRSTSIDEONLY			= 0x00800000,	// activated only when crossed from front side
+	ML_BLOCKPROJECTILE			= 0x01000000,
 };
 
 

src/namedef.h

@@ -409,5 +409,6 @@ xx(light)
 xx(lightabsolute)
 xx(nofakecontrast)
 xx(smoothlighting)
+xx(blockprojectiles)
 
 xx(Renderstyle)

src/p_lnspec.cpp

@@ -2357,6 +2357,39 @@ FUNC(LS_Line_SetTextureOffset)
 	return true;
 }
 
+FUNC(LS_Line_SetBlocking)
+// Line_SetBlocking (id, setflags, clearflags)
+{
+	static const int flagtrans[] =
+	{
+		ML_BLOCKING,
+		ML_BLOCKMONSTERS,
+		ML_BLOCK_PLAYERS,
+		ML_BLOCK_FLOATERS,
+		ML_BLOCKPROJECTILE,
+		ML_BLOCKEVERYTHING,
+		ML_RAILING,
+		-1
+	};
+
+	if (arg0 == 0) return false;
+
+	int setflags = 0;
+	int clearflags = 0;
+
+	for(int i = 0; flagtrans[i] != -1; i++, arg1 >>= 1, arg2 >>= 1)
+	{
+		if (arg1 & 1) setflags |= flagtrans[i];
+		if (arg2 & 1) clearflags |= flagtrans[i];
+	}
+
+	for(int line = -1; (line = P_FindLineFromID (arg0, line)) >= 0; )
+	{
+		lines[line].flags = (lines[line].flags & ~clearflags) | setflags;
+	}
+	return true;
+}
+
 
 
 FUNC(LS_ChangeCamera)
@@ -2942,8 +2975,8 @@ lnSpecFunc LineSpecials[256] =
 	LS_Sector_SetLink,
 	LS_Scroll_Wall,
 	LS_Line_SetTextureOffset,
-	LS_NOP,		// 54
-	LS_NOP,		// 55
+	LS_Sector_ChangeFlags,
+	LS_Line_SetBlocking,
 	LS_NOP,		// 56
 	LS_NOP,		// 57
 	LS_NOP,		// 58

src/p_map.cpp

@@ -562,7 +562,7 @@ bool PIT_CheckLine (line_t *ld, const FBoundingBox &box, FCheckPosition &tm)
 		return false;
 	}
 
-	if (!(tm.thing->flags & MF_MISSILE) || (ld->flags & ML_BLOCKEVERYTHING))
+	if (!(tm.thing->flags & MF_MISSILE) || (ld->flags & (ML_BLOCKEVERYTHING|ML_BLOCKPROJECTILE)))
 	{
 		if (ld->flags & ML_RAILING)
 		{
@@ -571,6 +571,7 @@ bool PIT_CheckLine (line_t *ld, const FBoundingBox &box, FCheckPosition &tm)
 		else if ((ld->flags & (ML_BLOCKING|ML_BLOCKEVERYTHING)) || 							// explicitly blocking everything
 			(!(tm.thing->flags3 & MF3_NOBLOCKMONST) && (ld->flags & ML_BLOCKMONSTERS)) || 	// block monsters only
 			(tm.thing->player != NULL && (ld->flags & ML_BLOCK_PLAYERS)) ||					// block players
+			((tm.thing->flags & MF_MISSILE) && (ld->flags & ML_BLOCKPROJECTILE)) ||			// block projectiles
 			((ld->flags & ML_BLOCK_FLOATERS) && (tm.thing->flags & MF_FLOAT)))				// block floaters
 		{
 			if (tm.thing->flags2 & MF2_BLASTED)

src/p_udmf.cpp

@@ -628,6 +628,10 @@ struct UDMFParser
 				Flag(ld->flags, ML_FIRSTSIDEONLY, key); 
 				break;
 
+			case NAME_blockprojectiles:
+				Flag(ld->flags, ML_BLOCKPROJECTILE, key); 
+				break;
+
 			default:
 				break;
 			}