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Routines |
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Used by the routine at Handle_Carrying_Eagle.
Moves the eagle by one pixel in the direction that the player is pressing. If more than one direction is pressed, right has priority, then left, up and down.
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| Steer_Eagle | E420 | CALL ReadControls | Read the controls (see ReadControls). | |||||
| E423 | BIT 0,A | Jump to Steer_Eagle_Right if right is pressed. | ||||||
| E425 | JR Z,Steer_Eagle_Right | |||||||
| E427 | BIT 1,A | Jump to Steer_Eagle_Left if left is pressed. | ||||||
| E429 | JR Z,Steer_Eagle_Left | |||||||
| E42B | BIT 3,A | Jump to Steer_Eagle_Up if up is pressed. | ||||||
| E42D | JR Z,Steer_Eagle_Up | |||||||
| E42F | BIT 2,A | Jump to Steer_Eagle_Down if down is pressed. | ||||||
| E431 | JR Z,Steer_Eagle_Down | |||||||
| Steer_Eagle_Right | E433 | INC (IX+$01) | Move the eagle one pixel to the right. | |||||
| E436 | RET | Return. | ||||||
| Steer_Eagle_Left | E437 | DEC (IX+$01) | Move the eagle one pixel to the left. | |||||
| E43A | RET | Return. | ||||||
| Steer_Eagle_Up | E43B | DEC (IX+$03) | Move the eagle one pixel up. | |||||
| E43E | RET | Return. | ||||||
| Steer_Eagle_Down | E43F | INC (IX+$03) | Move the eagle one pixel down. | |||||
| E442 | RET | Return. | ||||||
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