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 bd_nut_content; // BD nut contains the specified game element
+ int bd_hammer_walls_break_delay; // BD hammer time for breaking walls (in BD frames)
+ boolean bd_hammer_walls_reappear; // BD hammered walls are reappearing after some delay
+ int bd_hammer_walls_reappear_delay; // BD hammer time for reappearing walls (in BD frames)
+ int bd_num_skeletons_needed_for_pot; // BD skeletons amount must be collected to use a pot
+ int bd_skeleton_worth_num_diamonds; // BD skeleton collected is worth this number of diamonds
boolean em_slippery_gems; // EM style "gems slip from wall" behaviour
boolean em_explodes_by_fire; // EM style chain explosion behaviour