- copied some 3D floor fixes from GZDoom.

- fixed: Crushing polyobject did incomplete checks for blocked moves.


SVN r1355 (trunk)

docs/rh-log.txt

@@ -1,3 +1,7 @@
+January 7, 2009  (Changes by Graf Zahl)
+- copied some 3D floor fixes from GZDoom.
+- fixed: Crushing polyobject did incomplete checks for blocked moves.
+
 January 5, 2009  (Changes by Graf Zahl)
 - fixed: Parsing of color strings with 6 characters and spaces did not work.
 - fixed: State labels must be evaluated for the state's owner, not the calling actor.

src/d_main.cpp

@@ -1562,7 +1562,20 @@ static EIWADType ScanIWAD (const char *iwad)
 	}
 	else if (lumpsfound[Check_map01])
 	{
-		if (lumpsfound[Check_redtnt2])
+		if (lumpsfound[Check_FreeDoom])
+		{
+			// Is there a 100% reliable way to tell FreeDoom and FreeDM
+			// apart based solely on the lump names?
+			if (strstr(iwad, "freedm.wad") || strstr(iwad, "FREEDM.WAD"))
+			{
+				return IWAD_FreeDM;
+			}
+			else
+			{
+				return IWAD_FreeDoom;
+			}
+		}
+		else if (lumpsfound[Check_redtnt2])
 		{
 			return IWAD_Doom2TNT;
 		}
@@ -1583,19 +1596,6 @@ static EIWADType ScanIWAD (const char *iwad)
 					return IWAD_HexenDemo;
 				}
 			}
-			else if (lumpsfound[Check_FreeDoom])
-			{
-				// Is there a 100% reliable way to tell FreeDoom and FreeDM
-				// apart based solely on the lump names?
-				if (strstr(iwad, "freedm.wad") || strstr(iwad, "FREEDM.WAD"))
-				{
-					return IWAD_FreeDM;
-				}
-				else
-				{
-					return IWAD_FreeDoom;
-				}
-			}
 			else
 			{
 				return IWAD_Doom2;

src/p_local.h

@@ -368,6 +368,7 @@ AActor	*P_CheckOnmobj (AActor *thing);
 void	P_FakeZMovement (AActor *mo);
 bool	P_TryMove (AActor* thing, fixed_t x, fixed_t y, bool dropoff, const secplane_t * onfloor, FCheckPosition &tm);
 bool	P_TryMove (AActor* thing, fixed_t x, fixed_t y, bool dropoff, const secplane_t * onfloor = NULL);
+bool	P_CheckMove(AActor *thing, fixed_t x, fixed_t y);
 bool	P_TeleportMove (AActor* thing, fixed_t x, fixed_t y, fixed_t z, bool telefrag);	// [RH] Added z and telefrag parameters
 void	P_PlayerStartStomp (AActor *actor);		// [RH] Stomp on things for a newly spawned player
 void	P_SlideMove (AActor* mo, fixed_t tryx, fixed_t tryy, int numsteps);

src/p_map.cpp

@@ -220,12 +220,9 @@ void P_FindFloorCeiling (AActor *actor, bool onlyspawnpos)
 
 			fixed_t ff_bottom=rover->bottom.plane->ZatPoint(actor->x, actor->y);
 			fixed_t ff_top=rover->top.plane->ZatPoint(actor->x, actor->y);
-			
-			fixed_t delta1 = actor->z - (ff_bottom + ((ff_top-ff_bottom)/2));
-			fixed_t delta2 = actor->z + (actor->height? actor->height:1) - (ff_bottom + ((ff_top-ff_bottom)/2));
 
-			if (ff_top > actor->floorz && abs(delta1) < abs(delta2)) actor->floorz = ff_top;
+			if (ff_top > actor->floorz && ff_top < actor->z) actor->floorz = ff_top;
-			if (ff_bottom < actor->ceilingz && abs(delta1) >= abs(delta2)) actor->ceilingz = ff_bottom;
+			if (ff_bottom < actor->ceilingz && ff_bottom > actor->z + actor->height) actor->ceilingz = ff_bottom;
 		}
 	}
 #endif
@@ -1773,6 +1770,90 @@ bool P_TryMove (AActor *thing, fixed_t x, fixed_t y,
 
 
 
+//
+// P_CheckMove
+// Similar to P_TryMove but doesn't actually move the actor. Used for polyobject crushing
+//
+
+bool P_CheckMove(AActor *thing, fixed_t x, fixed_t y)
+{
+	FCheckPosition tm;
+	fixed_t		newz = thing->z;
+	int 		side;
+	int 		oldside;
+	line_t* 	ld;
+	sector_t*	oldsec = thing->Sector;	// [RH] for sector actions
+	sector_t*	newsec;
+
+	if (!P_CheckPosition (thing, x, y, tm))
+	{
+		return false;
+	}
+
+	if (thing->flags3 & MF3_FLOORHUGGER)
+	{
+		newz = tm.floorz;
+	}
+	else if (thing->flags3 & MF3_CEILINGHUGGER)
+	{
+		newz = tm.ceilingz - thing->height;
+	}
+
+	if (!(thing->flags & MF_NOCLIP))
+	{
+		if (tm.ceilingz - tm.floorz < thing->height)
+		{
+			return false;
+		}
+
+		if (!(thing->flags & MF_TELEPORT)
+			&& tm.ceilingz - newz < thing->height
+			&& !(thing->flags3 & MF3_CEILINGHUGGER)
+			&& (!(thing->flags2 & MF2_FLY) || !(thing->flags & MF_NOGRAVITY)))
+		{
+			return false;
+		}
+		if (thing->flags2 & MF2_FLY && thing->flags & MF_NOGRAVITY)
+		{
+			if (thing->z+thing->height > tm.ceilingz)
+				return false;
+		}
+		if (!(thing->flags & MF_TELEPORT) && !(thing->flags3 & MF3_FLOORHUGGER))
+		{
+			if (tm.floorz-newz > thing->MaxStepHeight)
+			{ // too big a step up
+				return false;
+			}
+			else if ((thing->flags & MF_MISSILE) && tm.floorz > newz)
+			{ // [RH] Don't let normal missiles climb steps
+				return false;
+			}
+			else if (newz < tm.floorz)
+			{ // [RH] Check to make sure there's nothing in the way for the step up
+				fixed_t savedz = thing->z;
+				thing->z = newz = tm.floorz;
+				bool good = P_TestMobjZ (thing);
+				thing->z = savedz;
+				if (!good)
+				{
+					return false;
+				}
+			}
+		}
+
+		if (thing->flags2 & MF2_CANTLEAVEFLOORPIC
+			&& (tm.floorpic != thing->floorpic
+				|| tm.floorz - newz != 0))
+		{ // must stay within a sector of a certain floor type
+			return false;
+		}
+	}
+
+	return true;
+}
+
+
+
 //
 // SLIDE MOVE
 // Allows the player to slide along any angled walls.

src/po_man.cpp

@@ -774,7 +774,7 @@ void ThrustMobj (AActor *actor, seg_t *seg, FPolyObj *po)
 	actor->momy += thrustY;
 	if (po->crush)
 	{
-		if (po->bHurtOnTouch || !P_CheckPosition (actor, actor->x + thrustX, actor->y + thrustY))
+		if (po->bHurtOnTouch || !P_CheckMove (actor, actor->x + thrustX, actor->y + thrustY))
 		{
 			P_DamageMobj (actor, NULL, NULL, po->crush, NAME_Crush);
 			P_TraceBleed (po->crush, actor);

src/r_interpolate.cpp

@@ -456,6 +456,7 @@ void DSectorPlaneInterpolation::Restore()
 		sector->ceilingplane.d = bakheight;
 		sector->SetPlaneTexZ(sector_t::ceiling, baktexz);
 	}
+	P_RecalculateAttached3DFloors(sector);
 }
 
 //==========================================================================
@@ -485,6 +486,7 @@ void DSectorPlaneInterpolation::Interpolate(fixed_t smoothratio)
 
 	*pheight = oldheight + FixedMul(bakheight - oldheight, smoothratio);
 	sector->SetPlaneTexZ(pos, oldtexz + FixedMul(baktexz - oldtexz, smoothratio));
+	P_RecalculateAttached3DFloors(sector);
 }
 
 //==========================================================================