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Routines |
| Prev: B16F | Up: Map | Next: B1D3 |
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Step a crater sprite, then stamp terrain when the frame reaches C8.
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Step the crater frame on even frames, then stamp the terrain when it reaches C8.
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| AnimateCrater | B1A4 | CALL DrawCurrentActor_Draw | Call DrawCurrentActor_Draw. | |||||
| B1A7 | LD A,($5E42) | Fetch GameTimer. | ||||||
| B1AA | AND %00000001 | Keep only bit 0. | ||||||
| B1AC | RET NZ | Return if this is an odd frame. | ||||||
| B1AD | INC (IX+$00) | Increase the actor type by one. | ||||||
| B1B0 | LD A,(IX+$00) | Fetch the actor type. | ||||||
| B1B3 | CP $C8 | Return if it is not C8. | ||||||
| B1B5 | RET NZ | |||||||
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Stamp the crater into the terrain and change the actor type.
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| B1B6 | CALL StampTerrainTile | Call StampTerrainTile. | ||||||
| B1B9 | LD (IX+$00),$63 | Write 63 to the actor type. | ||||||
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Return unless this actor is in Jetman's slot.
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| B1BD | PUSH IX | Copy the slot pointer into HL (using the stack). | ||||||
| B1BF | POP HL | |||||||
| B1C0 | LD BC,$6078 | Set BC to Jetman's slot address Jetman_Slot. | ||||||
| B1C3 | AND A | Clear the carry flag. | ||||||
| B1C4 | SBC HL,BC | Subtract Jetman's slot address. | ||||||
| B1C6 | RET NZ | Return if this is not Jetman. | ||||||
| B1C7 | CALL DrawCachedSprite | Call DrawCachedSprite. | ||||||
| B1CA | LD (IX+$00),$81 | Write 81 to the actor type. | ||||||
| B1CE | LD (IX+$05),$40 | Write 40 to the actor speed. | ||||||
| B1D2 | RET | Return. | ||||||
| Prev: B16F | Up: Map | Next: B1D3 |