#define EP_BIT_TUBE (1 << 3)
#define EP_BIT_EM_SLIPPERY_WALL (1 << 4)
+#define EP_BITMASK_DEFAULT 0
+
#define IS_AMOEBALIVE(e) (Properties1[e] & EP_BIT_AMOEBALIVE)
#define IS_AMOEBOID(e) (Properties1[e] & EP_BIT_AMOEBOID)
#define IS_SCHLUESSEL(e) (Properties1[e] & EP_BIT_SCHLUESSEL)