0x52 — camera_transform_param

Branches on handler_arg_byte and control bits, calls CCharacterCapture::Capture, CRLHCamera::AddAcceleration, CRLHCamera::SetRotate, and CAutoRateBase::SetParam for camera-related parameters.

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

At a glance

Opcode	`0x52` (82)
Handler	`CRadiScript::Command_52`
Signature	`CRadiScript::Command_52(int,SCR_DATA*,unsigned int,unsigned int)`
Translation unit	`r_script_run5.cpp`
Address	— debug build; click for all 3
Handler size	`0x5A0` (1440 bytes)
Engine name	`camera_transform_param`
Family	Background, map, landscape and camera
Command size	`4 + extra_words * 4` bytes

Handler behaviour

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   |  0x52          |
+----------------+----------------+----------------+----------------+

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

17 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
`capture_before_rotate`	derived	Control bit preserved from the command; its exact effect on the transform is untraced.
`control`	derived	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_flags`	derived	Boolean options for `control`, packed one per bit.
`distance_scale`	derived	Control bit preserved from the command; its exact effect on the transform is untraced.
`duration`	derived	How long the transform takes. This is the value itself, not a rendering of another field.
`field20`	derived	Value written to the engine record at offset +0x20; the field's meaning is not yet named.
`field3c`	derived	Value written to the engine record at offset +0x3c; the field's meaning is not yet named.
`field58_value`	input	Value used for `field58`.
`flag2`	derived	Boolean option 2 taken from the handler's argument byte.
`flag3`	derived	Boolean option 3 taken from the handler's argument byte.
`flag4`	derived	Boolean option 4 taken from the handler's argument byte.
`initial_vec`	input	Three-component vector (x, y, z) for `initial`.
`mode`	derived	Handler path selector taken from the argument byte. The meaning is specific to each command.
`post_vec`	input	Three-component vector (x, y, z) for `post`.
`rotate`	derived	Set when rotation is included on this line.
`rotate_value`	derived	Value used for `rotate`.
`yield`	derived	Pause the script here for one game frame; the next command runs on the following update. Lines without it keep running immediately.

Engine calls

Engine functions this handler was observed calling:

CAutoRateBase::SetParam(unsigned int,float,float,float)
CCharaDispManager::SetInstantMode()
CCharacterCapture::Capture()
CCharacterManager::GetCharacterSubManager(int)
CRLHCamera::AddAcceleration(float,bool)
CRLHCamera::SetRotate(float,float)
atan2f
atan2f / fmodf
fmodf

Bit masks

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

0x0001 0x0004 0x0008 0x0010 0x0003 0xFFFF 0x0002