-#define EL_GRAY_BALL_OPENING 502
-#define EL_ICE_WALL_SHRINKING 503
-#define EL_AMOEBA_WALL_GROWING 504
+#define EL_GRAY_BALL_ACTIVE 502
+#define EL_GRAY_BALL_OPENING 503
+#define EL_ICE_WALL_SHRINKING 504
+#define EL_AMOEBA_WALL_GROWING 505
+#define EL_BOMB_ACTIVE 506
+#define EL_MINE_ACTIVE 507
+#define EL_ENVELOPE_1_OPENING 508
+#define EL_ENVELOPE_2_OPENING 509
+#define EL_ENVELOPE_3_OPENING 510
+#define EL_ENVELOPE_4_OPENING 511
+
+#define EL_ENVELOPE_OPENING_START EL_ENVELOPE_1_OPENING
+#define EL_ENVELOPE_OPENING_END EL_ENVELOPE_4_OPENING