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Routines |
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Used by the routine at RunFrame.
Makes an entity of the type 5 (see UpdatePuffEntity) at the position of another entity, using one of the two hidden entities from 46590, and plays a buzz. Does nothing if both entities are in use.
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| CreatePuff | 42544 | LD IY,46590 | Point IY at the first of the two entities which can be used. | |||||
| 42548 | LD B,2 | Look at 2 entities. | ||||||
| 42550 | CALL FindHiddenEntity | Call FindHiddenEntity to find a hidden entity. | ||||||
| 42553 | RET Z | Return if there is not one. | ||||||
| 42554 | LD (IY+1),0 | Set the frame of the new entity to 0. | ||||||
| 42558 | LD (IY+0),5 | Set the type of the new entity to 5. | ||||||
| 42562 | LD H,(IX+2) | Fetch the first byte of the first coordinate of the other entity. | ||||||
| 42565 | LD L,(IX+3) | Fetch the second byte of the first coordinate of the other entity. | ||||||
| 42568 | LD E,(IX+11) | Fetch the first size of the other entity. | ||||||
| 42571 | LD D,0 | Clear D. | ||||||
| 42573 | SRL E | Halve the size. | ||||||
| 42575 | DEC E | Subtract one. | ||||||
| 42576 | ADD HL,DE | Add it to the first coordinate, to find the middle. | ||||||
| 42577 | LD (IY+2),H | Store the first byte of the first coordinate of the new entity. | ||||||
| 42580 | LD (IY+3),L | Store the second byte of the first coordinate of the new entity. | ||||||
| 42583 | LD H,(IX+5) | Fetch the first byte of the second coordinate of the other entity. | ||||||
| 42586 | LD L,(IX+6) | Fetch the second byte of the second coordinate of the other entity. | ||||||
| 42589 | LD E,(IX+12) | Fetch the second size of the other entity. | ||||||
| 42592 | SRL E | Halve the size. | ||||||
| 42594 | DEC E | Subtract one. | ||||||
| 42595 | ADD HL,DE | Add it to the second coordinate, to find the middle. | ||||||
| 42596 | LD (IY+5),H | Store the first byte of the second coordinate of the new entity. | ||||||
| 42599 | LD (IY+6),L | Store the second byte of the second coordinate of the new entity. | ||||||
| 42602 | LD H,(IX+8) | Fetch the first byte of the third coordinate of the other entity. | ||||||
| 42605 | LD L,(IX+9) | Fetch the second byte of the third coordinate of the other entity. | ||||||
| 42608 | LD E,(IX+13) | Fetch the third size of the other entity (which is not used). | ||||||
| 42611 | LD E,0 | Set the offset to 0. | ||||||
| 42613 | ADD HL,DE | Add it to the third coordinate. | ||||||
| 42614 | INC HL | Add one. | ||||||
| 42615 | LD (IY+8),H | Store the first byte of the third coordinate of the new entity. | ||||||
| 42618 | LD (IY+9),L | Store the second byte of the third coordinate of the new entity. | ||||||
| 42621 | LD A,(IX+17) | Fetch the heading of the other entity. | ||||||
| 42624 | LD (IY+17),A | Copy it to the new entity. | ||||||
| 42627 | LD (IY+16),136 | Set field 16 of the new entity to 136. | ||||||
| 42631 | LD (IY+27),64 | Set field 27 of the new entity to 64. | ||||||
| 42635 | LD (IY+23),6 | Set field 23 of the new entity to 6. | ||||||
| 42639 | JP PlayShortBuzz | Jump to PlayShortBuzz to play a buzz. | ||||||
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