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Routines |
| Prev: D3A9 | Up: Map | Next: D3C6 |
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Five doublings is a multiply by 32, and $5C08 is the base of the object table. The AND $7F is the counterpart of the flag bit that callers carry in the top of the index: render_obj sets bit 7 of an entry in the list at objects_to_draw once that object has been drawn, and the list is read again later in the same frame.
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| get_ptr_object | D3B5 | PUSH BC | ||||||||
| D3B6 | AND $7F | HL = index * 32 | ||||||||
| D3B8 | LD L,A | |||||||||
| D3B9 | LD H,$00 | |||||||||
| D3BB | ADD HL,HL | |||||||||
| D3BC | ADD HL,HL | |||||||||
| D3BD | ADD HL,HL | |||||||||
| D3BE | ADD HL,HL | |||||||||
| D3BF | ADD HL,HL | |||||||||
| D3C0 | LD BC,$5C08 | plus the start of the object table | ||||||||
| D3C3 | ADD HL,BC | |||||||||
| D3C4 | POP BC | |||||||||
| D3C5 | RET | |||||||||
| Prev: D3A9 | Up: Map | Next: D3C6 |