boolean bd_wraparound_objects; // BD cave object rendering uses wrap-around
boolean bd_scan_first_and_last_row; // BD engine scans top and bottom border rows
boolean bd_short_explosions; // BD engine uses four game cycles for explosions
boolean bd_wraparound_objects; // BD cave object rendering uses wrap-around
boolean bd_scan_first_and_last_row; // BD engine scans top and bottom border rows
boolean bd_short_explosions; // BD engine uses four game cycles for explosions