Gunfright: Routine at CCAE

CCAE: Next Sprite Number

Used by the routine at HandleOutlaw.

Moves on to the next of the four walking frames of a figure. They are the lowest two bits of the walking frame.

Input
IX	The address of the figure

Add one to the lowest two bits of the walking frame.

NextSpriteNumber

CCAE

LD A,(IX+$0C)

Fetch the walking frame and keep it in C.

CCB1

LD C,A

CCB2

INC A

Add one.

CCB3

AND %00000011

Keep the lowest two bits.

CCB5

LD B,A

Keep them in B.

Put them back in the walking frame.

CCB6

LD A,C

Fetch the walking frame again.

CCB7

AND %11111100

Clear the lowest two bits.

CCB9

OR B

Put in the new frame.

CCBA

LD (IX+$0C),A

Set the walking frame and return.

CCBD

RET

View the equivalent code in;