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Routines |
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Used by the routine at RunProjectile.
Adds the points for a creature that has been hit by a projectile to the score, makes the creature explode, and makes the projectile disappear. The points are worked out from the type of the creature, by rotating its bits and keeping the ones that make up the digits, each of which is from 0 to 7.
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Work out the points from the type of the creature.
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| ScoreForCreature | 49764 | LD A,(IY+0) | Fetch the type of the creature, and stash it in B. | |||||||
| 49767 | LD B,A | |||||||||
| 49768 | RLCA | Rotate it left twice. | ||||||||
| 49769 | RLCA | |||||||||
| 49770 | AND %01110111 | Keep only the bits that make the lower two digits. | ||||||||
| 49772 | LD C,A | Set the lower two digits of the points in C. | ||||||||
| 49773 | LD A,B | Fetch the type of the creature again. | ||||||||
| 49774 | RLCA | Rotate it left three times. | ||||||||
| 49775 | RLCA | |||||||||
| 49776 | RLCA | |||||||||
| 49777 | AND %00000111 | Keep only the bits that make the upper two digits. | ||||||||
| 49779 | LD B,A | Set the upper two digits of the points in B. | ||||||||
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Add the points and explode both objects.
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| 49780 | CALL AddToScore | Call AddToScore to add the points to the score. | ||||||||
| 49783 | CALL CopyScoreToScreen | Call CopyScoreToScreen to copy the score to the screen. | ||||||||
| 49786 | LD (IY+0),64 | Change the creature to the first stage of an explosion. | ||||||||
| 49790 | SET 1,(IY+7) | Flag the creature as being moved, so that nothing can push it. | ||||||||
| 49794 | JP FinishExplosion_Erase | Jump to FinishExplosion_Erase to change the projectile into the marker that makes it be erased. | ||||||||
| Prev: 49670 | Up: Map | Next: 49797 |