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Routines |
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Handler for the object types 48 to 4B (a puff of dust). The counter in byte 08 goes down on every call and the puff is removed, and erased, when it reaches zero. Bit 0 of the type follows bit 0 of the counter, which makes the puff flicker between two frames. The puff is removed if Sabreman is not in its room.
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| Handle_Dust | DEE8 | CALL StoreEntity | Save the state of the puff. | |||||
| DEEB | LD A,($8F1C) | Fetch the room x of Sabreman. | ||||||
| DEEE | CP (IX+$02) | Jump to Remove_Unseen_Weapon to remove the puff if it is in a different room x. | ||||||
| DEF1 | JP NZ,Remove_Unseen_Weapon | |||||||
| DEF4 | LD A,($8F1E) | Fetch the room y of Sabreman. | ||||||
| DEF7 | CP (IX+$04) | Jump to Remove_Unseen_Weapon to remove the puff if it is in a different room y. | ||||||
| DEFA | JP NZ,Remove_Unseen_Weapon | |||||||
| DEFD | DEC (IX+$08) | Decrease the counter and jump to Remove_Thrown_Weapon to remove the puff when it reaches zero. | ||||||
| DF00 | JP Z,Remove_Thrown_Weapon | |||||||
| DF03 | LD A,(IX+$08) | Fetch the counter. | ||||||
| DF06 | AND %00000001 | Keep only bit 0. | ||||||
| DF08 | LD B,A | Store it in B. | ||||||
| DF09 | LD A,(IX+$00) | Fetch the type. | ||||||
| DF0C | AND %11111110 | Reset bit 0. | ||||||
| DF0E | ADD A,B | Add bit 0 of the counter. | ||||||
| DF0F | LD (IX+$00),A | Store the type. | ||||||
| DF12 | JP Update_Object_Sprite | Jump to Update_Object_Sprite. | ||||||
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