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Routines |
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Used by the routines at HandleCheese and HandleSugar.
Sets the horizontal speed and the vertical speed of an actor to either 02 or FE (-2), at random. The new vertical speed is also left in A.
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| SetRandomSpeeds | 6EAC | LD A,R | Fetch a random number. | |||||||||
| 6EAE | AND %00000100 | Keep only bit 2. | ||||||||||
| 6EB0 | SUB $02 | Subtract 02 so that the speed is FE or 02. | ||||||||||
| 6EB2 | LD (IX+$04),A | Update the horizontal speed. | ||||||||||
| 6EB5 | LD A,R | Fetch a random number. | ||||||||||
| 6EB7 | RRA | Shift the random number right. | ||||||||||
| 6EB8 | AND %00000100 | Keep only bit 2. | ||||||||||
| 6EBA | SUB $02 | Subtract 02 so that the speed is FE or 02. | ||||||||||
| 6EBC | LD (IX+$05),A | Update the vertical speed. | ||||||||||
| 6EBF | RET | Return. | ||||||||||
| Prev: 6EA8 | Up: Map | Next: 6EC0 |