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Routines |
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Used by the routines at BounceFlameHorizontally, BounceNastieHorizontally and BounceWanderingNastieHorizontally.
Reverses the X velocity of an actor and flips bit 1 of its sprite ID, so that it faces the other way.
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| ReverseXVelocity | 42409 | LD A,(IX+6) | Fetch the X velocity of the actor. | |||||
| 42412 | NEG | Reverse the X velocity. | ||||||
| 42414 | LD (IX+6),A | Set the new X velocity of the actor. | ||||||
| 42417 | LD A,(IX+0) | Fetch the sprite ID of the actor. | ||||||
| 42420 | XOR %00000010 | Flip bit 1 (the direction the actor is facing). | ||||||
| 42422 | LD (IX+0),A | Set the new sprite ID of the actor. | ||||||
| 42425 | RET | Return. | ||||||
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