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Routines |
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Used by the routine at ADJ_FOR_OUT_OF_BOUNDS.
The floor is the only limit on Z: there is no ceiling. FLOOR is 64 in all three room sizes (ROOM_SIZES). A move that would take the object's base below it is shortened a unit at a time until it would not, and bit 2 of +$0C records that the move was stopped. Called by ADJ_FOR_OUT_OF_BOUNDS before the other objects are tried.
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| ADJ_DZ_FOR_OUT_OF_BOUNDS | C357 | LD A,(FLOOR) | D = the floor | |||||||||||
| C35A | LD D,A | |||||||||||||
| CLIP_DZ_TO_FLOOR | C35B | LD A,(IX+$03) | Z + dZ at or above the floor: done | |||||||||||
| C35E | ADD A,H | |||||||||||||
| C35F | CP D | |||||||||||||
| C360 | RET NC | |||||||||||||
| C361 | SET 2,(IX+$0C) | Stopped in Z | ||||||||||||
| C365 | LD A,H | A unit shorter, and again unless nothing is left | ||||||||||||
| C366 | CALL SHORTEN_DELTA | |||||||||||||
| C369 | LD H,A | |||||||||||||
| C36A | JR NZ,CLIP_DZ_TO_FLOOR | |||||||||||||
| C36C | RET | |||||||||||||
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