Gunfright: Routine at 51472

51472: Handle Mounted Sheriff

Type 21: the sheriff on a horse. On every fourth frame it counts RidingTimer down. When that reaches zero, TopSpeed is set to 10 the speed to 8 and the type to 1.

Input
IX	The address of the sheriff

Jump to HandleSheriff unless it is time to count down.

HandleMountedSheriff

51472

LD A,(41494)

Fetch FrameCounter.

51475

ADD A,2

Add 2.

51477

AND %00000011

Keep the lowest two bits.

51479

JR NZ,HandleSheriff

Jump to HandleSheriff if this is not every fourth frame.

Count down RidingTimer.

51481

LD HL,41481

Point HL at RidingTimer.

51484

LD A,(HL)

Jump to HandleSheriff if RidingTimer is zero.

51485

AND A

51486

JR Z,HandleSheriff

51488

DEC (HL)

Count RidingTimer down.

51489

JR NZ,HandleSheriff

Jump to HandleSheriff if it is not zero.

Get off the horse.

51491

LD A,10

Set TopSpeed to 10.

51493

LD (41503),A

51496

LD (IX+5),8

Set the speed to 8.

51500

LD (IX+0),1

Make the type 1.

Continue on to HandleSheriff.