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Routines |
| Prev: D446 | Up: Map | Next: D49D |
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Used by the routine at D446.
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This routine checks if Maroc is (floating) on top of an object of a type that drains or restores his energy.
Various stationary room objects e.g. fires, orbs and mushrooms, can either drain or restore Maroc's energy when he passes over them.
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| D479 | LD A,($EAD2) | Maroc's vertical pixel position | ||
| D47C | ADD A,$08 | Adjust the collision hit box 8 pixels down towards the base of Maroc's sprite, as the objects he's touching are supposed to be on the ground | ||
| D47E | LD ($EAD2),A | ...and re-store as the vertical co-ordinate to check | ||
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Check for energy draining items:
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| D481 | LD C,$FE | Collision type to check against - 254 = energy draining objects | ||
| D483 | CALL $DFCD | Collision check routine - returns 0 (no collision) or 1 (collision found) in the A register | ||
| D486 | CP $00 | |||
| D488 | JR Z,$D48F | If no collision, skip to the next check | ||
| D48A | LD A,$08 | Otherwise, set energy drain amount to 8 points of energy | ||
| D48C | CALL $E3CC | ...and reduce Maroc's energy by this amount | ||
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Check for energy restoring items:
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| D48F | LD C,$FD | Collision type to check against - 253 = energy restoring objects | ||
| D491 | CALL $DFCD | Collision check routine - returns 0 (no collision) or 1 (collision found) in the A register | ||
| D494 | CP $00 | |||
| D496 | JR Z,$D49D | If no collision, skip over the next couple of instructions | ||
| D498 | LD A,$FE | Otherwise, set energy drain amount to -2 (i.e. -2 drain, so INCREASE energy by 2) | ||
| D49A | CALL $E3CC | ...increase Maroc's energy | ||
| Prev: D446 | Up: Map | Next: D49D |