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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 | 58400 | CALL ReadControls | Read the controls (see ReadControls). | |||||
| 58403 | BIT 0,A | Jump to Steer_Eagle_Right if right is pressed. | ||||||
| 58405 | JR Z,Steer_Eagle_Right | |||||||
| 58407 | BIT 1,A | Jump to Steer_Eagle_Left if left is pressed. | ||||||
| 58409 | JR Z,Steer_Eagle_Left | |||||||
| 58411 | BIT 3,A | Jump to Steer_Eagle_Up if up is pressed. | ||||||
| 58413 | JR Z,Steer_Eagle_Up | |||||||
| 58415 | BIT 2,A | Jump to Steer_Eagle_Down if down is pressed. | ||||||
| 58417 | JR Z,Steer_Eagle_Down | |||||||
| Steer_Eagle_Right | 58419 | INC (IX+1) | Move the eagle one pixel to the right. | |||||
| 58422 | RET | Return. | ||||||
| Steer_Eagle_Left | 58423 | DEC (IX+1) | Move the eagle one pixel to the left. | |||||
| 58426 | RET | Return. | ||||||
| Steer_Eagle_Up | 58427 | DEC (IX+3) | Move the eagle one pixel up. | |||||
| 58430 | RET | Return. | ||||||
| Steer_Eagle_Down | 58431 | INC (IX+3) | Move the eagle one pixel down. | |||||
| 58434 | RET | Return. | ||||||
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