- map fix for Hickston Swamp (RR mod) E1L3:

Wall sprite is placed in the wrong sector which makes the new renderer's far stricter checks to reduce sprite flicker fail to position it correctly.

source/core/gamefuncs.h

@@ -77,16 +77,31 @@ inline DVector2 WallDelta(const walltype* wallnum)
     return WallEnd(wallnum) - WallStart(wallnum);
 }
 
+inline double SpriteX(spritetype* spr)
+{
+    return spr->x * (1 / 16.);
+}
+
 inline double SpriteX(int wallnum)
 {
     return sprite[wallnum].x * (1 / 16.);
 }
 
+inline double SpriteY(spritetype* spr)
+{
+    return spr->y * (1 / -16.);
+}
+
 inline double SpriteY(int wallnum)
 {
     return sprite[wallnum].y * (1 / -16.);
 }
 
+inline DVector2 SpritePos(spritetype* spr)
+{
+    return { SpriteX(spr), SpriteY(spr) };
+}
+
 inline double PointOnLineSide(double x, double y, double linex, double liney, double deltax, double deltay)
 {
     return (x - linex) * deltay - (y - liney) * deltax;

source/core/maphack.cpp

@@ -146,6 +146,16 @@ static int32_t LoadMapHack(const char *filename)
                 blockingpairs[currentwall].Push(sc.Number);
             }
         }
+        else if (sc.Compare("sector"))
+        {
+            if (sc.CheckNumber())
+            {
+                if (currentsprite != -1 && validateSprite())
+                {
+                    sprite[currentsprite].sectnum = sc.Number;
+                }
+            }
+        }
         else if (sc.Compare("picnum"))
         {
             if (sc.CheckNumber())

wadsrc/static/engine/compatibility/35ffa2f17ab074263f0963449dc7d463.mhk

@@ -0,0 +1,2 @@
+// Hickston Swamp E1L3 (RR mod) wall sprite in wrong sector flickers with new renderer
+sprite 225 sector 565