Turned DrawingEffect into a proper bitset, used to be a mix of enum/bitset before...

[supertux.git] / src / supertux / flip_level_transformer.cpp

diff --git a/src/supertux/flip_level_transformer.cpp b/src/supertux/flip_level_transformer.cpp
index 4bed1f9..53f285a 100644 (file)
--- a/src/supertux/flip_level_transformer.cpp
+++ b/src/supertux/flip_level_transformer.cpp
@@ -78,10 +78,10 @@ FlipLevelTransformer::transform_sector(Sector* sector)
 DrawingEffect
 FlipLevelTransformer::transform_drawing_effect(DrawingEffect effect)
 {
-  if(effect != 0) {
-    return NO_EFFECT;
+  if (effect & VERTICAL_FLIP) {
+    return effect & ~VERTICAL_FLIP;
   } else {
-    return VERTICAL_FLIP;
+    return effect | VERTICAL_FLIP;
   }
 }