-#define CE_OTHER_IS_TOUCHING 8
-#define CE_OTHER_IS_CHANGING 9
-#define CE_OTHER_IS_EXPLODING 10
-#define CE_OTHER_GETS_TOUCHED 11
-#define CE_OTHER_GETS_PRESSED 12
-#define CE_OTHER_GETS_PUSHED 13
-#define CE_OTHER_GETS_COLLECTED 14
-#define CE_OTHER_GETS_DROPPED 15
+#define CE_TOUCHING_X 8
+#define CE_CHANGE_OF_X 9
+#define CE_EXPLOSION_OF_X 10
+#define CE_PLAYER_TOUCHES_X 11
+#define CE_PLAYER_PRESSES_X 12
+#define CE_PLAYER_PUSHES_X 13
+#define CE_PLAYER_COLLECTS_X 14
+#define CE_PLAYER_DROPS_X 15