Original flight callbacks followed by original swept collision and crash handling. These are controlled airborne starts with zero processed steering input, not recorded gameplay. Each building occupies an otherwise empty Delphi map. Other actors and visual effects are omitted. The cell outline below is a location guide, not the building's collision shape.
Green is the resulting position; orange is the proposed position before collision correction. The right plot shows native height over source ticks. Timing labels use approximately 500 ticks/second. A trace ends at a crash or 512 ticks; reaching the time limit does not establish a permanently safe path.