(e) == EL_BD_BITER_LEFT || \
(e) == EL_BD_BITER_DOWN)
+#define IS_BD_EXPANDABLE_WALL(e) ((e) == EL_BD_EXPANDABLE_WALL_HORIZONTAL || \
+ (e) == EL_BD_EXPANDABLE_WALL_VERTICAL || \
+ (e) == EL_BD_EXPANDABLE_WALL_ANY || \
+ (e) == EL_BD_EXPANDABLE_STEELWALL_HORIZONTAL ||\
+ (e) == EL_BD_EXPANDABLE_STEELWALL_VERTICAL || \
+ (e) == EL_BD_EXPANDABLE_STEELWALL_ANY)
+
+#define IS_BD_CONVEYOR_BELT(e) ((e) == EL_BD_CONVEYOR_LEFT || \
+ (e) == EL_BD_CONVEYOR_LEFT_ACTIVE || \
+ (e) == EL_BD_CONVEYOR_RIGHT || \
+ (e) == EL_BD_CONVEYOR_RIGHT_ACTIVE)
+
+#define IS_BD_CONVEYOR_BELT_SWITCH(e) ((e) == EL_BD_CONVEYOR_SWITCH || \
+ (e) == EL_BD_CONVEYOR_SWITCH_ACTIVE || \
+ (e) == EL_BD_CONVEYOR_DIR_SWITCH_NORMAL || \
+ (e) == EL_BD_CONVEYOR_DIR_SWITCH_CHANGED)
+
#define IS_SOKOBAN_OBJECT_OR_FIELD(e) ((e) == EL_SOKOBAN_OBJECT || \
(e) == EL_SOKOBAN_FIELD_EMPTY || \
(e) == EL_SOKOBAN_FIELD_FULL)
#define EL_BD_CONVEYOR_RIGHT_ACTIVE 1318
#define EL_BD_CONVEYOR_SWITCH 1319
#define EL_BD_CONVEYOR_SWITCH_ACTIVE 1320
-#define EL_BD_CONVEYOR_DIR_SWITCH_LEFT 1321
-#define EL_BD_CONVEYOR_DIR_SWITCH_RIGHT 1322
+#define EL_BD_CONVEYOR_DIR_SWITCH_NORMAL 1321
+#define EL_BD_CONVEYOR_DIR_SWITCH_CHANGED 1322
#define EL_BD_GRAVITY_SWITCH 1323
#define EL_BD_GRAVITY_SWITCH_ACTIVE 1324
#define EL_BD_ACID 1325
int bd_biter_move_delay; // BD biter delay between movements (in BD frames)
int bd_biter_eats_element; // BD biter eats this game element when moving
int bd_bladder_converts_by_element; // BD bladder converts to clock by touching this element
+ boolean bd_change_expanding_wall; // BD expanding wall direction is changed if enabled
+ boolean bd_replicators_active; // BD replicators start in active state if enabled
+ int bd_replicator_create_delay; // BD replicator delay between replications (in BD frames)
+ boolean bd_conveyor_belts_active; // BD conveyor belts start in active state if enabled
+ boolean bd_conveyor_belts_changed; // BD conveyor belts direction is changed if enabled
+ boolean bd_water_cannot_flow_down; // BD water does not flow downwards if enabled
boolean em_slippery_gems; // EM style "gems slip from wall" behaviour
boolean em_explodes_by_fire; // EM style chain explosion behaviour