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Routines |
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Handles the bubbles that rise from the cauldron. They are replaced by the object that is needed next, shown once in four frames, when they are at the top, unless the player is Wulf, when they turn into the spell that repels him. The bubbles vanish once a special object appears in the first slot.
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Rise and show the next required object, or the repel spell.
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| HandleCauldronBubbles | 47322 | CALL SetPixelAdjustments_Sparkle | Set the pixel adjustments of a sparkle. | |||||
| 47325 | LD A,(23624) | Fetch the graphic number of the first special object of the room from ObjectsTable_FirstSpecial. | ||||||
| 47328 | AND A | Test whether the slot is empty. | ||||||
| 47329 | JP NZ,HandleRepelSpell_Vanish | Jump to HandleRepelSpell_Vanish if the slot is in use, to remove the bubbles. | ||||||
| 47332 | SET 1,(IX+7) | Flag the bubbles to be ignored in the 3D calculations. | ||||||
| 47336 | CALL ApplyGravityAndMove | Apply gravity to the bubbles and move them. | ||||||
| 47339 | CALL NextSpriteNumber | Change to the next graphic of the bubbles. | ||||||
| 47342 | LD A,(IX+3) | Fetch the Z coordinate of the bubbles. | ||||||
| 47345 | CP 160 | Compare it with 160. | ||||||
| 47347 | LD (IX+11),2 | Set the speed in Z to 2. | ||||||
| 47351 | JR C,HandleCauldronBubbles_Draw | Jump to HandleCauldronBubbles_Draw if the bubbles have not reached the top. | ||||||
| 47353 | LD (IX+11),1 | Set the speed in Z to 1. | ||||||
| 47357 | LD A,(23560) | Fetch the graphic number of the legs of the player from ObjectsTable. | ||||||
| 47360 | SUB 48 | Take off the first graphic number of Wulf. | ||||||
| 47362 | CP 16 | Jump to HandleCauldronBubbles_Repel if the player is Wulf. | ||||||
| 47364 | JR C,HandleCauldronBubbles_Repel | |||||||
| 47366 | LD A,(IX+0) | Fetch the graphic number of the bubbles. | ||||||
| 47369 | AND %00000011 | Keep the frame of the animation. | ||||||
| 47371 | JR NZ,HandleCauldronBubbles_Draw | Jump to HandleCauldronBubbles_Draw if it is not the first frame. | ||||||
| 47373 | CALL FindNextObjectRequired | Find the next object that is needed. | ||||||
| 47376 | LD A,(HL) | Fetch its graphic number. | ||||||
| 47377 | OR %10101000 | Make it the graphic number of the object that shows through the bubbles. | ||||||
| 47379 | LD (IX+0),A | Store the graphic number. | ||||||
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This entry point is used by the routine at HandleSpecialObjectInCauldron.
Flag the bubbles to be redrawn.
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| HandleCauldronBubbles_Draw | 47382 | JP SetWipeAndDrawFlags | Flag the bubbles to be drawn again. | |||||
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Turn the bubbles into the spell that repels Wulf.
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| HandleCauldronBubbles_Repel | 47385 | SET 2,(IX+0) | Turn the bubbles into the spell that repels Wulf. | |||||
| 47389 | RES 1,(IX+7) | Make the spell take part in the 3D calculations. | ||||||
| 47393 | JR HandleCauldronBubbles_Draw | Jump to HandleCauldronBubbles_Draw. | ||||||
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