0x69 — primitive_helper_byte

Primitive helper byte setter. It selects helper slot handler_arg_byte & 7 and stores handler_arg_byte >> 3 at helper offset +0x0C.

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

At a glance

Opcode	`0x69` (105)
Handler	`CRadiScript::Command_69`
Signature	`CRadiScript::Command_69(int,SCR_DATA*,unsigned int,unsigned int)`
Translation unit	`r_script_run6.cpp`
Address	— debug build; click for all 3
Handler size	`0x20` (32 bytes)
Engine name	`primitive_helper_byte`
Family	Primitives, textures, sound and movies
Command size	`4 + extra_words * 4` bytes

Handler behaviour

Primitive helper byte setter. It selects helper slot handler_arg_byte & 7 and stores handler_arg_byte >> 3 at helper offset +0x0C.

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   |  0x69          |
+----------------+----------------+----------------+----------------+

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

3 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
`slot`	input	Index into a runtime table owned by this command's subsystem.
`value`	input	The value the condition compares against.
`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:

(inline)

Bit masks

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

0x0007