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Routines |
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Used by the routines at Handler_Bullets, Animate_Falling, Handler_Eating, Handler_Projectiles and Handler_CollisionMonsters.
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| Handler_DecreaseEnergy | DD6C | EX AF,AF' | Exchange the AF register with the shadow AF register. | |||||||
| DD6D | LD A,(IY+$00) | Return if the monster state (*IY+00) is higher than 21 (includes the "explosion" and "human" states). If this is the case then the monster is already "game over". | ||||||||
| DD70 | CP $21 | |||||||||
| DD72 | RET NC | |||||||||
| DD73 | EX AF,AF' | Exchange the shadow AF register back to the normal AF register. | ||||||||
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Keep decreasing the monsters energy by the number held in A.
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| Handler_DecreaseEnergy_Loop | DD74 | DEC (IY+$0C) | Decrease monster energy (*IY+0C) by one. | |||||||
| DD77 | DEC A | Decrease A by one. | ||||||||
| DD78 | JR NZ,Handler_DecreaseEnergy_Loop | Jump to Handler_DecreaseEnergy_Loop until A is zero. | ||||||||
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Is the monster still in-play?
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| DD7A | LD A,(IY+$0C) | Return if *IY+0C is lower than C8. | ||||||||
| DD7D | CP $C8 | |||||||||
| DD7F | RET C | |||||||||
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If the monsters energy falls to less than 00 - their turn is over.
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| DD80 | LD (IY+$0C),$00 | Reset monsters energy to 00 (in *IY+0C). | ||||||||
| DD84 | LD (IY+$00),$21 | Write 21 (explosion state) to the current monster state (*IY+00). | ||||||||
| DD88 | RET | Return. | ||||||||
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