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Routines |
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Updates a bug which is eating the flower. Every update adds one to the count of the bugs that are eating in BugsEating_Flower (which the flower uses to decide whether to sink, see UpdateFlower), and the bug wobbles up and down. When the flower has sunk below the bug, it stops eating.
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| EatFlower | 27450 | INC (IX+5) | Increment the eating counter in IX+5 by one. | |||||
| 27453 | LD A,(24123) | Increment BugsEating_Flower by one. | ||||||
| 27456 | INC A | |||||||
| 27457 | LD (24123),A | |||||||
| 27460 | BIT 3,(IX+5) | Test bit 3 of IX+5 (the bug moves up and down as it eats). | ||||||
| 27464 | LD A,(IX+6) | A=the Y position the bug started eating at, from IX+6. | ||||||
| 27467 | JR NZ,EatFlower_StoreY | Jump to EatFlower_StoreY if bit 3 is set. | ||||||
| 27469 | DEC A | Move the bug up by one pixel. | ||||||
| EatFlower_StoreY | 27470 | LD (IX+2),A | Write the new Y position. | |||||
| 27473 | LD A,(24206) | A=the Y position of the flower. | ||||||
| 27476 | SRL A | Halve it. | ||||||
| 27478 | SUB 2 | Subtract 2. | ||||||
| 27480 | LD C,A | C=the position of the top of the flower. | ||||||
| 27481 | LD A,(IX+2) | A=the Y position of the bug. | ||||||
| 27484 | SRL A | Halve it. | ||||||
| 27486 | SUB C | Subtract the flower position. | ||||||
| 27487 | JP NC,UpdateSlug_Draw | Jump to UpdateSlug_Draw to draw the bug if it is not above the flower. | ||||||
| 27490 | RES 3,(IX+4) | Reset bit 3 of IX+4 (the bug stops eating). | ||||||
| 27494 | XOR A | A=0. | ||||||
| 27495 | LD (IX+5),A | Write 0 to IX+5. | ||||||
| 27498 | LD (IX+6),A | Write 0 to IX+6. | ||||||
| 27501 | JP UpdateSlug_Draw | Jump to UpdateSlug_Draw to draw the bug. | ||||||
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