Routines
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66A6: Update Blooming Flower
Opens the flower once the "get ready" delay has finished. Every eighth update the flower moves on to the next stage, using the sprite for the stage from FlowerSpriteTable. At stage 04 the flower is coloured in using ColouriseFlower, and at stage 05 the level is complete (LevelComplete).
Stage 00 Stage 01 Stage 02 Stage 03 Stage 04
bloom-stage-0 bloom-stage-1 bloom-stage-2 bloom-stage-3 bloom-stage-4
Input
IX Flower object
UpdateBloomingFlower 66A6 CALL StoreEntity Remember the position and state using StoreEntity.
66A9 LD A,($5E22) Return if the "get ready" delay in PlayDelay_Counter is not finished.
66AC AND A
66AD JR NZ,UpdateBloomingFlower_Return
66AF LD A,($5E17) A=the game timer from GameTimer.
66B2 AND %00000111 Keep only bits 0-2 (so that the flower only changes stage every eighth update).
66B4 JR NZ,UpdateBloomingFlower_Return Return if it is not time for the next stage.
66B6 CALL GetFlowerSprite Get the sprite for the current stage using GetFlowerSprite.
66B9 CALL SetUpPreviousSprite_Address Set up the previous sprite using SetUpPreviousSprite_Address.
66BC EXX Switch to the shadow registers.
66BD INC (IX+$04) Increment the stage in IX+04 by one.
66C0 LD A,(IX+$04) A=the stage.
66C3 CP $04 Compare the stage with 04 (the open flower).
66C5 CALL Z,ColouriseFlower Call ColouriseFlower if this is stage 04 to colour the flower in.
66C8 CP $05 Jump to LevelComplete if the stage is 05 (note that A has been overwritten if the flower was just coloured).
66CA JR Z,LevelComplete
66CC CALL GetFlowerSprite Get the sprite for the new stage using GetFlowerSprite.
66CF CALL SetUpSprite_Address Set up the new sprite using SetUpSprite_Address.
66D2 EXX Switch to the shadow registers.
66D3 CALL DisplayEntity_Compare Draw the new sprite and erase the previous one using DisplayEntity_Compare.
UpdateBloomingFlower_Return 66D6 RET Return.
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