case Xdynamite_2:
case Xdynamite_3:
case Xdynamite_4:
-#if 1
+#ifdef EM_ENGINE_USE_ADDITIONAL_ELEMENTS
case Xfake_acid_1:
case Xfake_acid_2:
case Xfake_acid_3:
case Xacid_splash_w:
Cave[y][x] = Zplayer;
Next[y][x] = Zplayer;
-#if 1
+#ifdef EM_ENGINE_USE_ADDITIONAL_ELEMENTS
case Xfake_acid_1:
case Xfake_acid_2:
case Xfake_acid_3: