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Routines |
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For a doorway in a wall of constant V: +1 or -1 into +$0E of his legs, towards the middle line, while he faces along V (his legs mirrored) and is not on it.
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| NUDGE_ALONG_U | C069 | BIT 6,(IY+$07) | facing along U: no nudge | |||||||
| C06D | JR Z,NUDGE_DONE | |||||||||
| C06F | LD A,(IX+$09) | on the middle line already | ||||||||
| C072 | CP (IY+$01) | |||||||||
| C075 | JR Z,NUDGE_DONE | |||||||||
| C077 | LD A,$01 | +1 if the middle is at a greater U, else -1 | ||||||||
| C079 | JR NC,NUDGE_ALONG_U_0 | |||||||||
| C07B | NEG | |||||||||
| NUDGE_ALONG_U_0 | C07D | LD (IY+$0E),A | the U nudge | |||||||
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This entry point is used by the routine at NUDGE_ALONG_V.
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| NUDGE_DONE | C080 | POP BC | drop the BC FIRST_PILLAR pushed, and back to the main loop | |||||||
| C081 | RET | |||||||||
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