0x57 — position_vibration_vector

Position vibration helper. It allocates CVibrationVector records, calls CVibrationVector::SetParam, then dispatches virtual attach/start paths.

proven— handler traced, and exercised by at least one shipped script.

At a glance

Opcode	`0x57` (87)
Handler	`CRadiScript::Command_57`
Signature	`CRadiScript::Command_57(int,SCR_DATA*,unsigned int,unsigned int)`
Translation unit	`r_script_run5.cpp`
Address	— debug build; click for all 3
Handler size	`0x404` (1028 bytes)
Engine name	`position_vibration_vector`
Family	Background, map, landscape and camera
Command size	`4 + extra_words * 4` bytes

Handler behaviour

Position vibration helper. It allocates CVibrationVector records, calls CVibrationVector::SetParam, then dispatches virtual attach/start paths.

Encoding

The command header is one 32-bit word, as described in §3 Instruction encoding:

 31            24 23            16 15             8 7              0
+----------------+----------------+----------------+----------------+
|  flags         |  argument byte |  extra words   |  0x57          |
+----------------+----------------+----------------+----------------+

Bits 8–15 give the number of 32-bit operand words that follow. Bits 16–23 are handed to the handler as a bitfield; on character commands bit 0 normally says whether a character selector word is present. Bit 31 is the keep-going bit.

Operand fields

11 documented fields. input fields are read from the command's operand words; derived fields are computed from other fields rather than stored separately.

Field	Role	Meaning
`control`	input	Bitmask word choosing which optional payload words follow, in the order the handler tests them. Changing it changes how many words the command carries.
`control_high`	derived	Upper part of the matching packed value for `control`.
`control_low8`	derived	Low byte of `control`, shown for the handler's byte-wise test.
`control_target_mode`	derived	Mode selector for `control target`; the handler branches on it.
`direct_float`	input	Float parameter for `direct`.
`mode`	input	Handler path selector taken from the argument byte. The meaning is specific to each command.
`params`	input	The remaining operand words for this line, kept in order.
`start_slot0`	derived	Start/attach flag for the first slot, decoded from the mode bits.
`start_slot1`	derived	Start/attach flag for the second slot, decoded from the mode bits.
`target`	input	What the command acts on or moves towards.
`target_slot`	input	Destination index into a runtime table owned by this command's subsystem.

Engine calls

Engine functions this handler was observed calling:

CVibrationVector::SetParam(POSVIB_ATTR,float,float,float,float,float,float,float)
CVibrationVector::SetParam(POSVIB_ATTR,unsigned int,float,float,float,float,float,float)
operator new(unsigned int,int,const char*)
operator_new (PositionVib)

Bit masks

Masks the handler applies to its argument byte or operand words:

0x0003 0x0001 0x0002