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Routines |
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Used by the routine at CheckTerrainCollision.
Keeps the high byte of a speed within FD (the fastest upwards or to the left) and 02 (the fastest downwards or to the right).
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| LimitSpeed | C880 | LD A,H | A=H. | |||||||||
| C881 | BIT 7,A | Jump to LimitSpeed_Positive if bit 7 of A is clear. | ||||||||||
| C883 | JR Z,LimitSpeed_Positive | |||||||||||
| C885 | CP $FE | Return if A is FE or more. | ||||||||||
| C887 | RET NC | |||||||||||
| C888 | LD H,$FD | H=FD. | ||||||||||
| C88A | RET | Return. | ||||||||||
| LimitSpeed_Positive | C88B | CP $02 | Return if A is less than 02. | |||||||||
| C88D | RET C | |||||||||||
| C88E | LD H,$02 | H=02. | ||||||||||
| C890 | RET | Return. | ||||||||||
| Prev: C868 | Up: Map | Next: C891 |