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Routines |
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The handler for a fireball, which has the sprite IDs 34 to 37. Advances the animation frame and flickers the colour.
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| HandlerFireball | 81F0 | CALL StoreEntity | Call StoreEntity to save the position of the weapon. | |||||
| 81F3 | LD A,(IX+$00) | Fetch the sprite ID of the fireball and add one, to move on to the next frame. | ||||||
| 81F6 | INC A | |||||||
| 81F7 | AND %00000011 | Keep only bits 0-1 (there are 4 animation frames). | ||||||
| 81F9 | ADD A,$34 | Add 34 to point to the correct frame/ sprite ID (the fireball base sprite ID is: 34). | ||||||
| 81FB | LD (IX+$00),A | Write the new frame/ sprite ID back to the entity. | ||||||
| 81FE | LD A,($5C78) | Fetch FRAMES. | ||||||
| 8201 | RLA | Rotate A left, which moves bit 0 into bit 1. | ||||||
| 8202 | AND %00000010 | Keep only bit 1. | ||||||
| 8204 | ADD A,$45 | Add 45 to get an attribute of INK:CYAN, PAPER:BLACK (BRIGHT) or INK:WHITE, PAPER:BLACK (BRIGHT). | ||||||
| 8206 | LD (IX+$05),A | Set the attribute of the fireball. | ||||||
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Continue on to HandlerWeapon.
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| Prev: 81DB | Up: Map | Next: 8209 |