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Routines |
| Prev: 6974 | Up: Map | Next: 69B3 |
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Moves a repellent spray 04 pixels at a time in the direction it was fired. The spray is removed if it hits a bug (see CheckWeaponHit) or reaches the edge of the play area.
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| UpdateRepellentSpray | 698F | CALL StoreEntity | Remember the position and state using StoreEntity. | |||||
| 6992 | LD A,(IX+$05) | Jump to RemoveWeapon to remove the spray if it has hit a bug. | ||||||
| 6995 | AND A | |||||||
| 6996 | JR NZ,RemoveWeapon | |||||||
| 6998 | LD A,$04 | A=04 (the distance to move). | ||||||
| 699A | BIT 6,(IX+$00) | Jump to UpdateRepellentSpray_Move if the spray is moving right (bit 6 is not set). | ||||||
| 699E | JR Z,UpdateRepellentSpray_Move | |||||||
| 69A0 | NEG | Negate the distance (move left). | ||||||
| UpdateRepellentSpray_Move | 69A2 | ADD A,(IX+$01) | Add the X position of the spray. | |||||
| 69A5 | CP $18 | Jump to RemoveWeapon to remove the spray if it is past the left edge. | ||||||
| 69A7 | JR C,RemoveWeapon | |||||||
| 69A9 | CP $E0 | Jump to RemoveWeapon to remove the spray if it is past the right edge. | ||||||
| 69AB | JR NC,RemoveWeapon | |||||||
| 69AD | LD (IX+$01),A | Write the new X position. | ||||||
| 69B0 | JP DrawObject | Jump to DrawObject to draw the spray. | ||||||
| Prev: 6974 | Up: Map | Next: 69B3 |