#define EP_BIT_SCHLUESSEL (1 << 2)
#define EP_BIT_PFORTE (1 << 3)
#define EP_BIT_SOLID (1 << 4)
-#define EP_BIT_MASSIVE (1 << 5)
+#define EP_BIT_INDESTRUCTIBLE (1 << 5)
#define EP_BIT_SLIPPERY (1 << 6)
#define EP_BIT_ENEMY (1 << 7)
#define EP_BIT_MAUER (1 << 8)
#define IS_SCHLUESSEL(e) (Properties1[e] & EP_BIT_SCHLUESSEL)
#define IS_PFORTE(e) (Properties1[e] & EP_BIT_PFORTE)
#define IS_SOLID(e) (Properties1[e] & EP_BIT_SOLID)
-#define IS_MASSIVE(e) (Properties1[e] & EP_BIT_MASSIVE)
+#define IS_INDESTRUCTIBLE(e) (Properties1[e] & EP_BIT_INDESTRUCTIBLE)
#define IS_SLIPPERY(e) (Properties1[e] & EP_BIT_SLIPPERY)
#define IS_ENEMY(e) (Properties1[e] & EP_BIT_ENEMY)
#define IS_MAUER(e) (Properties1[e] & EP_BIT_MAUER)