Reset warp directions when exiting playtesting

This fixes a bug where if warpdir() was used during in-editor
playtesting, the changed warp direction would persist even when leaving
playtesting.

This would be very annoying to correct back every time you playtested
and warpdir() was used, so I've added some kludge to store the actual
warp direction of each room when entering playtesting, and then set the
warp directions back when leaving playtesting.

desktop_version/src/Input.cpp

@@ -1913,6 +1913,14 @@ void gameinput(KeyPoll& key, Graphics& dwgfx, Game& game, mapclass& map,
 
           dwgfx.backgrounddrawn=false;
           music.fadeout();
+          //If warpdir() is used during playtesting, we need to set it back after!
+          for (int j = 0; j < ed.maxheight; j++)
+          {
+            for (int i = 0; i < ed.maxwidth; i++)
+            {
+              ed.level[i+(j*ed.maxwidth)].warpdir=ed.kludgewarpdir[i+(j*ed.maxwidth)];
+            }
+          }
         }
       }
     }