boolean bd_gravity_affects_all; // BD engine gravity affects all falling objects
boolean bd_intermission; // BD level is intermission
boolean bd_diagonal_movements; // BD style diagonal movements
+ boolean bd_topmost_player_active; // BD engine uses first player found on playfield
+ int bd_pushing_prob; // BD player probability to push rocks
+ int bd_pushing_prob_with_sweet; // BD player probability to push rocks after eating sweet
+ boolean bd_push_mega_rock_with_sweet; // BD player can push mega rocks after eating sweet
boolean em_slippery_gems; // EM style "gems slip from wall" behaviour
boolean em_explodes_by_fire; // EM style chain explosion behaviour
boolean use_spring_bug; // for compatibility with old levels