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Routines |
| Prev: 9341 | Up: Map | Next: 93F2 |
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Used by the routine at UpdateChasingObject.
Part of UpdateChasingObject. Redraws the object, moves it, counts down its lifetime and gives it a position.
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| UpdateObject | 938D | CALL ResetSprites | Reset the collision state. | |||||
| 9390 | BIT 7,(IX+$10) | Test bit 7 of the flags of the object. | ||||||
| 9394 | CALL NZ,PrepareErase | Call PrepareErase if it is set. | ||||||
| 9397 | RES 6,(IX+$10) | Clear bit 6 of the flags of the object. | ||||||
| 939B | EXX | Switch registers. | ||||||
| 939C | CALL AccelerateObject | Move the object. | ||||||
| 939F | CALL SetFacing | Set the facing of the object. | ||||||
| 93A2 | DEC (IX+$15) | Count down the lifetime of the object. | ||||||
| 93A5 | JR NZ,UpdateObject_Flags | Jump to UpdateObject_Flags if it has not run out. | ||||||
| UpdateObject_Remove | 93A7 | LD (IX+$00),$FF | Free the slot. | |||||
| 93AB | JP UpdateObject_Finish | Jump to UpdateObject_Finish. | ||||||
| UpdateObject_Flags | 93AE | BIT 4,(IX+$10) | Jump to UpdateObject_Remove if bit 4 of the flags of the object is set. | |||||
| 93B2 | JR NZ,UpdateObject_Remove | |||||||
| 93B4 | LD BC,$0B10 | BC=0B10. | ||||||
| 93B7 | CALL MoveObjectBackAndForth | Nudge the object and reverse its speeds. | ||||||
| 93BA | LD HL,($CE57) | Fetch the map position from MapPosition. | ||||||
| 93BD | LD B,$00 | Clear B. | ||||||
| 93BF | LD A,L | Fetch the map column. | ||||||
| 93C0 | CP (IX+$01) | Compare it with the map column of the object. | ||||||
| 93C3 | JR Z,UpdateObject_Zone | Jump to UpdateObject_Zone if they are the same. | ||||||
| 93C5 | INC B | Add two to B. | ||||||
| 93C6 | INC B | |||||||
| UpdateObject_Zone | 93C7 | LD A,H | Fetch the map zone. | |||||
| 93C8 | CP (IX+$04) | Compare it with the map zone of the object. | ||||||
| 93CB | JR Z,UpdateObject_Table | Jump to UpdateObject_Table if they are the same. | ||||||
| 93CD | INC B | Add one to B. | ||||||
| UpdateObject_Table | 93CE | LD A,B | A=B. | |||||
| 93CF | LD HL,$DC91 | Use the table at VisibleTiles. | ||||||
| 93D2 | CALL AddAToHL | Add the offset to the address. | ||||||
| 93D5 | LD A,(HL) | Fetch the entry. | ||||||
| 93D6 | CP $3E | Jump to UpdateObject_Draw if it is not 3E. | ||||||
| 93D8 | JR NZ,UpdateObject_Draw | |||||||
| 93DA | LD A,(IX+$02) | Fetch the horizontal position of the object. | ||||||
| 93DD | CP $18 | Jump to UpdateObject_Draw if it is lower than 18. | ||||||
| 93DF | JR C,UpdateObject_Draw | |||||||
| 93E1 | CP $D8 | Jump to UpdateObject_Draw if it is D8 or higher. | ||||||
| 93E3 | JR NC,UpdateObject_Draw | |||||||
| 93E5 | LD (IX+$05),$6A | Set the vertical position of the object to 6A. | ||||||
| UpdateObject_Draw | 93E9 | CALL PrepareDraw | Draw the object. | |||||
| UpdateObject_Finish | 93EC | CALL DrawObject | Call DrawObject. | |||||
| 93EF | JP SetObjectAttributes | Jump to SetObjectAttributes. | ||||||
| Prev: 9341 | Up: Map | Next: 93F2 |