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Routines |
| Prev: 46056 | Up: Map | Next: 46274 |
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Tick the sprite delay, move the debris and, once the thrust reaches 1, play SquareWave_Loop and become type 231.
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Reload the delay from *IX+17 when it expires.
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| Handler_FallingSprite | 46176 | DEC (IX+16) | Decrease *IX+16 by one. | |||||
| 46179 | JR NZ,Handler_FallingSprite_CycleType | Jump to Handler_FallingSprite_CycleType if it is not zero. | ||||||
| 46181 | LD A,(IX+17) | A=*IX+17. | ||||||
| 46184 | LD (IX+16),A | Write A to *IX+16. | ||||||
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Increase the thrust and land once it reaches 1.
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| 46187 | INC (IX+6) | Increment *IX+6 by one. | ||||||
| 46190 | LD A,(IX+6) | A=*IX+6. | ||||||
| 46193 | CP 1 | Compare A with 1. | ||||||
| 46195 | JR Z,Handler_FallingSprite_Land | Jump to Handler_FallingSprite_Land if they are equal. | ||||||
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Step the type (230 becomes 231, else reset to 228), then move.
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| Handler_FallingSprite_CycleType | 46197 | LD A,(IX+0) | A=*IX+0. | |||||
| 46200 | INC A | Increment A by one. | ||||||
| 46201 | CP 231 | Compare A with 231. | ||||||
| 46203 | JR NC,Handler_FallingSprite_MoveDown | Jump to Handler_FallingSprite_MoveDown if A is 231 or higher. | ||||||
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""Explosion: Frame 5"".
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| 46205 | LD A,228 | A=228. | ||||||
| Handler_FallingSprite_MoveDown | 46207 | LD (IX+0),A | Write A to *IX+0. | |||||
| 46210 | CALL MoveBySpeed | Call MoveBySpeed. | ||||||
| 46213 | LD (IX+4),A | Write A to *IX+4. | ||||||
| 46216 | JP DrawCurrentActor_Draw | Jump to DrawCurrentActor_Draw. | ||||||
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Play SquareWave_Loop and become type 231.
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| Handler_FallingSprite_Land | 46219 | LD C,(IX+4) | C=*IX+4. | |||||
| 46222 | LD D,4 | D=4. | ||||||
| 46224 | CALL SquareWave_Loop | Call SquareWave_Loop. | ||||||
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""Explosion: Frame 8"".
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| 46227 | LD (IX+0),231 | Write 231 to *IX+0. | ||||||
| 46231 | JP DrawCurrentActor_Draw | Jump to DrawCurrentActor_Draw. | ||||||
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Step the type on and redraw.
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| Handler_FallingSprite_StepType | 46234 | INC (IX+0) | Increase the actor type by one. | |||||
| 46237 | JP DrawCurrentActor_Draw | Jump to DrawCurrentActor_Draw. | ||||||
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Flip the type every eighth frame, then drop.
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| Handler_FallingSprite_FlipType | 46240 | LD A,(24130) | Fetch GameTimer. | |||||
| 46243 | AND %00000111 | Keep only bits 0-2. | ||||||
| 46245 | JR NZ,Handler_FallingSprite_IncreaseY | Jump to Handler_FallingSprite_IncreaseY if the result is not zero. | ||||||
| 46247 | LD A,(IX+0) | Fetch the actor type. | ||||||
| 46250 | XOR %00000001 | Flip bit 0. | ||||||
| 46252 | LD (IX+0),A | Write it back. | ||||||
| Handler_FallingSprite_IncreaseY | 46255 | INC (IX+4) | Increase the actor Y by one. | |||||
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Remove the sprite once it reaches the ground line.
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| 46258 | LD A,(IX+4) | Fetch the actor Y. | ||||||
| 46261 | CP 175 | Jump to DrawCurrentActor_Draw if it is still above the ground line. | ||||||
| 46263 | JP C,DrawCurrentActor_Draw | |||||||
| 46266 | CALL DrawCachedSprite | Call DrawCachedSprite. | ||||||
| 46269 | LD (IX+0),0 | Write 0 to the actor type. | ||||||
| 46273 | RET | Return. | ||||||
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