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Routines |
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Used by the routine at UpdateType15.
Does nothing once the ship is exploding (the counter at 8F53 is 0A or more). Otherwise it makes a warble that depends on the age of the object at offset 15 of IX, and then carries on at PlayWarble.
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| PlayObjectWarble | 720A | LD A,($8F53) | The ship state. | |||||
| 720D | CP $0A | Return if A is 0A or more. | ||||||
| 720F | RET NC | |||||||
| 7210 | LD A,(IX+$15) | Read offset 15 of IX. | ||||||
| 7213 | AND %00111111 | Keep the bits of A that are set in 3F. | ||||||
| 7215 | RR A | Rotate A right through the carry. | ||||||
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Continue on to PlayWarble.
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