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Causes the character to climb a ladder; that is, switching from standard walkmesh movement, to climbing along a line connecting two points on the walkmesh.
If ''B1'', ''B2'', ''B3'' or ''B4'' is non-zero, then the value for that particular component is taken from memory using the corresponding bank and address specified, rather than as a literal value. Both retrieved values and literals can be used for different components. If using ''X'', ''Y'', ''Z'' or ''I'' as addresses, the lower byte should hold the address whilst the higher byte should be zero.
The coordinates specify the end-point of the ladder; the current position of the character is used as the start point. The ID of the walkmesh triangle must be specified; this is the triangle the character will step onto after reaching the end point of the ladder. The '''K''' value specifies the keys used to move the character across the ladder; keys outside the range found in the table will cause unpredictable behaviour. The animation ID specifies an offset into the field object's animation list; this animation is played at the speed specified by '''S''' whilst the character climbs. Finally, the '''D''' argument is a direction value in the game's standard direction format, which orients the character on the ladder.
