Knight Lore: Routine at C9FB

C9FB: Set Player Speed

Used by the routine at MovePlayer.

Sets the speeds along x and y of the player to walk forward. The adjustments of the speeds that arches make to nudge the player into doorways are added first, then the speed of 03 in the direction that the player is facing.

Input
IX	The address of the object

Add the doorway nudges.

SetPlayerSpeed

C9FB

LD A,(IX+$09)

Fetch the speed along the x axis.

C9FE

ADD A,(IX+$0E)

Add the adjustment along x.

CA01

LD (IX+$09),A

Store the speed along the x axis.

CA04

LD A,(IX+$0A)

Fetch the speed along the y axis.

CA07

ADD A,(IX+$0F)

Add the adjustment along y.

CA0A

LD (IX+$0A),A

Store the speed along the y axis.

CA0D

XOR A

Write 00 to the adjustments along x and y.

CA0E

LD (IX+$0E),A

CA11

LD (IX+$0F),A

Jump by the facing direction.

CA14

LD BC,$CA32

Point BC at PlayerMovementTable.

This entry point is used by the routines at NudgeObjectsToArch and HandleRoomExit.

SetPlayerSpeed_Direction

CA17

CALL GetFacingDirection

Fetch the direction the player is facing.

CA1A

LD L,A

Copy it to L.

CA1B

JP RunGame_JumpToHandler

Jump to the routine for the direction.

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