The Trap Door: Routine at 61879

61879: Script Routine: (19) Position put-down entity to the right

Place the put-down entity to the carrier's right.

Input
IX	Address of complex state data for an entity

ScriptRoutine_PlacePutDownRight

61879

BIT 4,(IX+3)

Is bit 4 of flags byte 3 (IX+3) set? If not, jump to AdvanceScriptInstruction.

61883

JP Z,AdvanceScriptInstruction

61886

LD A,(29421)

Load A with the saved held-entity width from CameraYCoordinate.

61889

LD D,A

Copy A into D as a saved coordinate / value.

61890

SRL A

Shift A right logical.

61892

LD E,A

Copy A into E as a saved coordinate / value.

61893

LD A,4

Load A with 4.

61895

SUB E

Subtract E from A.

61896

ADD A,(IX+7)

Add the entity byte at offset 7 to A.

This entry point is used by the routine at ScriptRoutine_PlacePutDownLeft.

Write the put-down entity's X, X-extent and room, then continue the script.

ScriptRoutine_PlacePutDownLeft_WritePutDown

61899

LD IY,(29356)

Load IY with the current-entity pointer (Pointer_CurrentEntity).

61903

LD (IY+7),A

Set the referenced entity's x-coordinate.

61906

ADD A,D

Add D into A while building a 16-bit entity/screen address.

61907

LD (IY+8),A

Set the referenced entity's x-extent.

61910

LD A,(IX+4)

Load A with the current entity's room index.

61913

LD (IY+4),A

Set the referenced entity's room index.

61916

JP AdvanceScriptInstruction

Jump to AdvanceScriptInstruction to run the next script instruction.