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Routines |
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Handles one of the sparkles that fly off the blocks when the cauldron room is shown at the end of the game. A sparkle rises until it is high enough, in one of four diagonal directions that depend on the part of the room it is in, and then flies at the player.
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Rise until the sparkle is high enough, then fly at the player.
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| HandleEndingSparkles | B566 | CALL SetPixelAdjustments_Sparkle | Set the pixel adjustments for a sparkle. | |||||
| B569 | LD A,(IX+$03) | Fetch the height of the sparkle. | ||||||
| B56C | CP $A4 | Jump to SendSparkleAtPlayer if it has reached the top. | ||||||
| B56E | JR NC,SendSparkleAtPlayer | |||||||
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Pick a diagonal from the part of the room the sparkle is in.
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| B570 | LD (IX+$0B),$03 | Make the sparkle rise at a speed of 03. | ||||||
| B574 | LD A,(IX+$01) | Fetch the X coordinate of the sparkle. | ||||||
| B577 | RLCA | Rotate bit 7 into bit 0. | ||||||
| B578 | AND %00000001 | Keep only that bit. | ||||||
| B57A | LD L,A | Stash it in L. | ||||||
| B57B | LD A,(IX+$02) | Fetch the Y coordinate of the sparkle. | ||||||
| B57E | AND %10000000 | Keep bit 7 of it. | ||||||
| B580 | OR L | Add the bit from the X coordinate. | ||||||
| B581 | RLCA | Rotate the two bits into bits 0 and 1. | ||||||
| B582 | AND %00000011 | Keep only those two bits. | ||||||
| B584 | LD L,A | Use them as the number of the entry of the direction table. | ||||||
| B585 | LD BC,$B58B | Point BC at SparkleDirectionTable. | ||||||
| B588 | JP RunGame_JumpToHandler | Jump to the routine for the direction. | ||||||
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