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Routines |
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Reload the actor graphic and XOR it via FetchAndDraw.
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Reload the actor graphic and XOR it via FetchAndDraw.
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| DrawActorSprite | 34695 | CALL LoadSpritePointers | Call LoadSpritePointers. | |||||||
| 34698 | EXX | Switch to the shadow registers. | ||||||||
| 34699 | CALL FetchAndDraw | Call FetchAndDraw. | ||||||||
| 34702 | EXX | Switch back to the normal registers. | ||||||||
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Compare the cached screen MSB with the actor Y.
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| DrawActorSprite_Fetch | 34703 | LD A,(24150) | Subtract the actor Y from SpriteCachedY. | |||||||
| 34706 | SUB (IX+4) | |||||||||
| 34709 | JP Z,ContinueSpriteWrite_Row | Jump to ContinueSpriteWrite_Row if they match. | ||||||||
| 34712 | JP M,DrawActorSprite_Draw | Jump to DrawActorSprite_Draw if the result is negative. | ||||||||
| 34715 | LD C,A | Store the row difference in the row counter. | ||||||||
| 34716 | LD A,(24154) | Jump to ContinueSpriteWrite_Row if the difference is taller than the old sprite's rows in SpriteCachedRows. | ||||||||
| 34719 | CP C | |||||||||
| 34720 | JP C,ContinueSpriteWrite_Row | |||||||||
| 34723 | SUB C | Subtract it from SpriteCachedRows and jump to WriteSpriteRow. | ||||||||
| 34724 | LD (24154),A | |||||||||
| 34727 | JP WriteSpriteRow | |||||||||
| DrawActorSprite_Draw | 34730 | EXX | Switch register sets and negate the row difference. | |||||||
| 34731 | NEG | |||||||||
| 34733 | LD C,A | |||||||||
| 34734 | LD A,(24153) | Jump to ContinueSpriteWrite_Next if the difference is taller than the new sprite's rows in SpriteRowsLeft. | ||||||||
| 34737 | CP C | |||||||||
| 34738 | JP C,ContinueSpriteWrite_Next | |||||||||
| 34741 | SUB C | Subtract it from the row count and jump to ContinueSpriteWrite_Done. | ||||||||
| 34742 | JP ContinueSpriteWrite_Done | |||||||||
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