• Opcode: 0x025
• Short name: LADDERUP
• Long name: Climb ladder (up)

Argument

Destination walkmesh triangle ID (16-bit).

Stack

XCoord

YCoord

ZCoord

Climb animation ID

LADDERUP

Description

Moves this entity onto a ladder and climbs “up”. The top stack value is an animation ID that is started immediately (looping) via the model animation call; the next three values are the destination X, Y, Z, stored as fixed-point world coordinates (move_pos_x/y/z, entity+436/+440/+444, shifted left by 12). The inline 16-bit argument is the destination walkmesh triangle ID (entity+508). The handler sets motion_state (entity+572) to 3 (ladder mode) and seeds the climb direction field move_angle_current (entity+538) with 1 (up). It returns 1 (wait) while climbing and 2/3 when the motion completes, pausing the script until the climb finishes.

Identical to LADDERDOWN except for the direction seed (1 for up, 0 for down).

PC handler: SCRIPT_LADDERUP.

Function addresses

Function	Address	Description
SCRIPT_LADDERUP	0x525900	Field script opcode handler (verified IDA function)