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Routines |
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Type 1A: the sheriff arriving back in the street. The vertical offset of the sprite in byte 0D grows by four every frame, with a rising sound, until it reaches 1C. The object then becomes a sheriff (type 01) and is protected from harm for a short time.
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Raise the sprite and play a rising tone.
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| HandleSheriffEntrance | A452 | LD A,(IX+$0D) | Fetch the vertical offset of the sprite. | |
| A455 | ADD A,$04 | Add 04 to the offset. | ||
| A457 | LD (IX+$0D),A | Store the new offset. | ||
| A45A | CALL PlayShortTone | Play a sound effect whose pitch depends on the offset. | ||
| A45D | LD A,(IX+$0D) | Fetch the offset again. | ||
| A460 | CP $1C | Return if the offset is still below 1C. | ||
| A462 | RET C | |||
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The sheriff has arrived, so turn the object into a sheriff.
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| A463 | LD (IX+$00),$01 | Turn the object into a sheriff. | ||
| A467 | LD (IX+$0D),$00 | Reset the vertical offset of the sprite to zero. | ||
| A46B | LD A,$10 | Write 10 to ProtectionTimer to make the sheriff invulnerable for a short time. | ||
| A46D | LD ($A208),A | |||
| A470 | LD HL,$A228 | Point the sprite list of the object at SheriffSpriteList. | ||
| A473 | LD (IX+$0E),L | |||
| A476 | LD (IX+$0F),H | |||
| A479 | LD C,$00 | Clear C, so that no controls are being pressed. | ||
| A47B | JP HandleSheriff_Act | Carry on in the sheriff handler. | ||
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