- added a compatibility option to restore the original Heretic bug where

a Minotaur couldn't spawn floor flames when standing in water having its
  feet clipped.
- added vid_vsync to display options.
- fixed: Animations of type 'Range' must be disabled if the textures don't
  come from the same definition unit (i.e both containing file and use type
  are identical.)
- changed: Item pushing is now only done once per P_XYMovement call.
- Increased the push factor of Heretic's pod to 0.5 so that its behavior
  more closely matches the original which depended on several bugs in the engine.
- Removed damage thrust clamping in P_DamageMobj and changed the thrust calculation
  to use floats to prevent overflows. The prevention of the overflows was the
  only reason the clamping was done.
- Added Raven's dagger-like vector sprite for the player to the automap code.


SVN r1668 (trunk)

src/p_interaction.cpp

@@ -1039,12 +1039,20 @@ void P_DamageMobj (AActor *target, AActor *inflictor, AActor *source, int damage
 			
 			ang = R_PointToAngle2 (origin->x, origin->y,
 				target->x, target->y);
-			thrust = damage*(FRACUNIT>>3)*kickback / target->Mass;
+
+
+			// Calculate this as float to avoid overflows so that the
+			// clamping that had to be done here can be removed.
+			thrust = FLOAT2FIXED((damage * 0.125 * kickback) / target->Mass);
+
 			// [RH] If thrust overflows, use a more reasonable amount
+			/* old fixed point code that could overflow.
+			thrust = damage*(FRACUNIT>>3)*kickback / target->Mass;
 			if (thrust < 0 || thrust > 10*FRACUNIT)
 			{
 				thrust = 10*FRACUNIT;
 			}
+			*/
 			// make fall forwards sometimes
 			if ((damage < 40) && (damage > target->health)
 				 && (target->z - origin->z > 64*FRACUNIT)