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Routines |
| Prev: C6AD | Up: Map | Next: C700 |
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Handles a portcullis that is moving. A portcullis that is coming down is deadly. It speeds up as it falls until it hits the floor, and the sound of a portcullis is played. One that is going up moves at a speed of 02 until it is 1F above the floor of the room. When it is done the portcullis stops, and the next one is free to start.
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Fall and speed up, or rise, until the portcullis is done.
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| HandleMovingPortcullis | C6BD | CALL SetPixelAdjustments_Legs | Set the pixel adjustments of the bottom half of a guard. | |||||
| C6C0 | SET 7,(IX+$0D) | Make the portcullis deadly. | ||||||
| C6C4 | LD A,($5C14) | Fetch the counter and flags of the player. | ||||||
| C6C7 | AND %11110000 | Keep the counter that runs when the player enters the room. | ||||||
| C6C9 | RET NZ | Return if the player has only just entered the room. | ||||||
| C6CA | LD A,(IX+$0B) | Fetch the speed in Z. | ||||||
| C6CD | AND A | Test it. | ||||||
| C6CE | JP P,HandleMovingPortcullis_Rise | Jump to HandleMovingPortcullis_Rise if the portcullis is going up. | ||||||
| C6D1 | DEC (IX+$0B) | Increase the speed of the fall. | ||||||
| C6D4 | CALL ApplyGravityAndMove | Apply gravity to the portcullis and move it. | ||||||
| C6D7 | BIT 2,(IX+$0C) | Jump to SetWipeAndDrawFlags if the portcullis has not hit the floor. | ||||||
| C6DB | JR Z,SetWipeAndDrawFlags | |||||||
| C6DD | CALL PlayRandomNoise | Play the sound of a portcullis. | ||||||
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Stop the portcullis and free the next one to start.
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| HandleMovingPortcullis_Stop | C6E0 | XOR A | Clear A. | |||||
| C6E1 | LD ($5BAF),A | Flag that no portcullis is moving at PortcullisMovingFlag. | ||||||
| C6E4 | RES 0,(IX+$00) | Change the graphic of the portcullis to the stationary one. | ||||||
| C6E8 | JR SetWipeAndDrawFlags | Jump to SetWipeAndDrawFlags. | ||||||
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Rise until the portcullis is 1F above the floor.
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| HandleMovingPortcullis_Rise | C6EA | LD (IX+$0B),$02 | Set the speed in Z to 02. | |||||
| C6EE | CALL PlaySoundFromPosition | Play the sound of a moving object. | ||||||
| C6F1 | CALL ApplyGravityAndMove | Apply gravity to the portcullis and move it. | ||||||
| C6F4 | LD A,($5BAE) | Fetch the Z coordinate of the floor of the room from FloorHeight. | ||||||
| C6F7 | ADD A,$1F | Add 1F to it. | ||||||
| C6F9 | CP (IX+$03) | Compare it with the Z coordinate of the portcullis. | ||||||
| C6FC | JR NC,SetWipeAndDrawFlags | Jump to SetWipeAndDrawFlags if the portcullis has not yet reached the top. | ||||||
| C6FE | JR HandleMovingPortcullis_Stop | Jump to HandleMovingPortcullis_Stop to stop it. | ||||||
| Prev: C6AD | Up: Map | Next: C700 |