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Routines |
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Sets up the duel in the first two object slots. The first is the outlaw, in a random place in the middle of the screen, who will move about a random number of times before he draws, and the second is his gun.
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Copy the outlaw and his gun into the first two slots.
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| SetUpDuel | 47225 | LD DE,41597 | Point DE at the first object slot. | |
| 47228 | LD A,(DE) | Fetch the type of the object in the slot. | ||
| 47229 | AND A | Return if the slot is in use. | ||
| 47230 | RET NZ | |||
| 47231 | PUSH DE | Copy the address of the first object slot into IY (using the stack). | ||
| 47232 | POP IY | |||
| 47234 | LD HL,47267 | Point HL at DuelTemplates. | ||
| 47237 | LD BC,32 | Set the size of two object slots in BC. | ||
| 47240 | LDIR | Copy the templates into the slots. | ||
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Choose how many times he moves and where he stands.
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| 47242 | LD A,(41496) | Fetch a random number. | ||
| 47245 | AND %00000111 | Keep a number from 0 to 7. | ||
| 47247 | ADD A,2 | Add two to give two to nine. | ||
| 47249 | LD (IY+10),A | Set the number of times the outlaw moves before he draws. | ||
| 47252 | LD A,(41497) | Fetch another random number. | ||
| 47255 | AND %01111111 | Keep a number from 0 to 127. | ||
| 47257 | ADD A,64 | Add 64 to give the horizontal position of the outlaw. | ||
| 47259 | LD (IY+2),A | Set the horizontal position of the outlaw. | ||
| 47262 | XOR A | Write 0 to DrawMessageState so the draw message has not been shown. | ||
| 47263 | LD (41489),A | |||
| 47266 | RET | Return. | ||
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