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Routines |
| Prev: 6B20 | Up: Map | Next: 6B70 |
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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 | 6B3A | INC (IX+$05) | Increment the eating counter in IX+05 by one. | |||||
| 6B3D | LD A,($5E3B) | Increment BugsEating_Flower by one. | ||||||
| 6B40 | INC A | |||||||
| 6B41 | LD ($5E3B),A | |||||||
| 6B44 | BIT 3,(IX+$05) | Test bit 3 of IX+05 (the bug moves up and down as it eats). | ||||||
| 6B48 | LD A,(IX+$06) | A=the Y position the bug started eating at, from IX+06. | ||||||
| 6B4B | JR NZ,EatFlower_StoreY | Jump to EatFlower_StoreY if bit 3 is set. | ||||||
| 6B4D | DEC A | Move the bug up by one pixel. | ||||||
| EatFlower_StoreY | 6B4E | LD (IX+$02),A | Write the new Y position. | |||||
| 6B51 | LD A,($5E8E) | A=the Y position of the flower. | ||||||
| 6B54 | SRL A | Halve it. | ||||||
| 6B56 | SUB $02 | Subtract 02. | ||||||
| 6B58 | LD C,A | C=the position of the top of the flower. | ||||||
| 6B59 | LD A,(IX+$02) | A=the Y position of the bug. | ||||||
| 6B5C | SRL A | Halve it. | ||||||
| 6B5E | SUB C | Subtract the flower position. | ||||||
| 6B5F | JP NC,UpdateSlug_Draw | Jump to UpdateSlug_Draw to draw the bug if it is not above the flower. | ||||||
| 6B62 | RES 3,(IX+$04) | Reset bit 3 of IX+04 (the bug stops eating). | ||||||
| 6B66 | XOR A | A=00. | ||||||
| 6B67 | LD (IX+$05),A | Write 00 to IX+05. | ||||||
| 6B6A | LD (IX+$06),A | Write 00 to IX+06. | ||||||
| 6B6D | JP UpdateSlug_Draw | Jump to UpdateSlug_Draw to draw the bug. | ||||||
| Prev: 6B20 | Up: Map | Next: 6B70 |