Routines
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CA89: Bring Speed Closer To Zero
Used by the routines at StopObjectAtFloor, BlockMovementInX, BlockMovementInY, BlockMovementInZ, KeepObjectInRoomInX and KeepObjectInRoomInY.
Takes one off the size of a speed.
Input
A The speed
Output
A The new speed
F The zero flag is set if the new speed is zero
BringSpeedCloserToZero CA89 AND A Test whether the speed is zero.
CA8A RET Z Return if it is.
CA8B JP P,BringSpeedCloserToZero_Step Jump to BringSpeedCloserToZero_Step if it is positive.
CA8E INC A Add two to the negative speed.
CA8F INC A
BringSpeedCloserToZero_Step CA90 DEC A Take one off the speed.
CA91 RET Return.
View the equivalent code in;
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