The Trap Door: Routine at CC53

CC53: Script Routine: (49) Task-four entity action

Raise the task-four creature one character.

Input
IX	Address of complex state data for an entity

ScriptRoutine_TaskFourRaiseY

CC53

LD A,(IX+$05)

Load A with the current entity's y-coordinate.

CC56

SUB $04

Subtract 04 from A.

CC58

LD (IX+$05),A

Set the current entity's y-coordinate.

CC5B

LD A,(IX+$06)

Load A with the current entity's y-extent.

CC5E

SUB $04

Subtract 04 from A.

CC60

LD (IX+$06),A

Set the current entity's y-extent.

CC63

BIT 3,(IX+$0D)

Is bit 03 of the current entity's extra state set? If not, jump to AdvanceScriptInstruction.

CC67

CC6A

RES 3,(IX+$0D)

Reset bit 03 of the current entity's extra state.

CC6E

LD BC,$A18B

Point BC at the vat layout (GraphicLayout_Vat).

CC71

LD ($907B),BC

Store BC in the inactive complex-entity slot fields at 907B.

CC75

Jump to AdvanceScriptInstruction to run the next script instruction.