+#define GET_NEW_PUSH_DELAY(e) ( (element_info[e].push_delay_fixed) + \
+ RND(element_info[e].push_delay_random))
+#define GET_NEW_MOVE_DELAY(e) ( (element_info[e].move_delay_fixed) + \
+ RND(element_info[e].move_delay_random))
+
+#define ELEMENT_CAN_ENTER_FIELD_GENERIC(e, x, y, condition) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE(x, y) || \
+ (condition) || \
+ (DONT_COLLIDE_WITH(e) && \
+ IS_FREE_OR_PLAYER(x, y))))
+
+#define ELEMENT_CAN_ENTER_FIELD_GENERIC_2(x, y, condition) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE(x, y) || \
+ (condition)))
+
+#define ELEMENT_CAN_ENTER_FIELD(e, x, y) \
+ ELEMENT_CAN_ENTER_FIELD_GENERIC(e, x, y, 1)
+
+#define ELEMENT_CAN_ENTER_FIELD_OR_ACID(e, x, y) \
+ ELEMENT_CAN_ENTER_FIELD_GENERIC(e, x, y, (Feld[x][y] == EL_ACID))
+
+#define ELEMENT_CAN_ENTER_FIELD_OR_ACID_2(x, y) \
+ ELEMENT_CAN_ENTER_FIELD_GENERIC_2(x, y, (Feld[x][y] == EL_ACID))
+
+#define ENEMY_CAN_ENTER_FIELD(x, y) (IN_LEV_FIELD(x, y) && IS_FREE(x, y))
+
+#define YAMYAM_CAN_ENTER_FIELD(x, y) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE_OR_PLAYER(x, y) || \
+ Feld[x][y] == EL_DIAMOND))
+
+#define DARK_YAMYAM_CAN_ENTER_FIELD(x, y) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE_OR_PLAYER(x, y) || \
+ IS_FOOD_DARK_YAMYAM(Feld[x][y])))
+
+#define PACMAN_CAN_ENTER_FIELD(x, y) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE_OR_PLAYER(x, y) || \
+ IS_AMOEBOID(Feld[x][y])))
+
+#define PIG_CAN_ENTER_FIELD(x, y) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE(x, y) || \
+ IS_FOOD_PIG(Feld[x][y])))
+
+#define PENGUIN_CAN_ENTER_FIELD(x, y) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE(x, y) || \
+ IS_FOOD_PIG(Feld[x][y]) || \
+ Feld[x][y] == EL_EXIT_OPEN || \
+ Feld[x][y] == EL_ACID))
+
+#define MOLE_CAN_ENTER_FIELD(x, y, condition) \
+ (IN_LEV_FIELD(x, y) && (IS_FREE(x, y) || (condition)))
+
+#define IN_LEV_FIELD_AND_IS_FREE(x, y) (IN_LEV_FIELD(x, y) && IS_FREE(x, y))
+#define IN_LEV_FIELD_AND_NOT_FREE(x, y) (IN_LEV_FIELD(x, y) && !IS_FREE(x, y))
+