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Routines |
| Prev: 9E17 | Up: Map | Next: 9E6D |
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Updates an entity of the type 0E which is made by UpdateSaucerEntity. The entity falls until its third coordinate reaches 0103.
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| UpdateShotEntity | 9E46 | LD A,(IX+$16) | Read field 16 of the entity. | |||||
| 9E49 | AND %11110000 | Keep the counter. | ||||||
| 9E4B | JR Z,UpdateShotEntity_Fall | Jump to UpdateShotEntity_Fall if it is zero. | ||||||
| 9E4D | CALL DecreaseEntityCounter | Call DecreaseEntityCounter to count down. | ||||||
| 9E50 | JP UpdateEntity_Project | Jump to UpdateEntity_Project to carry on updating the entity. | ||||||
| UpdateShotEntity_Fall | 9E53 | LD A,(IX+$08) | Fetch the first byte of the third coordinate of the entity. | |||||
| 9E56 | DEC A | Subtract one. | ||||||
| 9E57 | JR NZ,UpdatePuffEntity_Test | Jump to UpdatePuffEntity_Test unless it was 01. | ||||||
| 9E59 | LD A,(IX+$09) | Fetch the second byte of the third coordinate of the entity. | ||||||
| 9E5C | CP $03 | Jump to UpdatePuffEntity_Test if it is 03 or more. | ||||||
| 9E5E | JR NC,UpdatePuffEntity_Test | |||||||
| 9E60 | LD (IX+$09),$03 | Set the second byte of the third coordinate to 03. | ||||||
| 9E64 | XOR A | Set A to zero. | ||||||
| 9E65 | LD (IX+$12),A | Set field 12 of the entity to zero. | ||||||
| 9E68 | LD (IX+$13),A | Set field 13 of the entity to zero. | ||||||
| 9E6B | JR UpdatePuffEntity_Test | Jump to UpdatePuffEntity_Test. | ||||||
| Prev: 9E17 | Up: Map | Next: 9E6D |