0x67 — fade_control

Branches on handler_arg_byte >> 4 and calls CRadiFade::SetColorFade, CRadiFade::SetDissolves, or CRadiFade::SetBattleInFade.

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

At a glance

Opcode	`0x67` (103)
Handler	`CRadiScript::Command_67`
Signature	`CRadiScript::Command_67(int,SCR_DATA*,unsigned int,unsigned int)`
Translation unit	`r_script_run6.cpp`
Address	— debug build; click for all 3
Handler size	`0x278` (632 bytes)
Engine name	`fade_control`
Family	Primitives, textures, sound and movies
Command size	`4 + extra_words * 4` bytes

Handler behaviour

Branches on handler_arg_byte >> 4 and calls CRadiFade::SetColorFade, CRadiFade::SetDissolves, or CRadiFade::SetBattleInFade.

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   |  0x67          |
+----------------+----------------+----------------+----------------+

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

10 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
`bit4`	input	Single bit whose meaning is not yet traced; preserved so the command round-trips.
`color`	input	Fade colour: `black`, `white`, `current` (the global fade colour), or an explicit 0xAARRGGBB word.
`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.
`curve`	input	Interpolation curve index; the engine scales the duration through a per-curve table.
`direction`	input	`out` fades the screen to the colour, `in` fades from it. Control bit 0 picks which end of the colour pair carries the alpha byte.
`dissolve_value`	input	Value used for `dissolve`.
`duration`	input	How long the fade takes. This is the value itself, not a rendering of another field.
`hold`	derived	Keep the finished fade on screen instead of releasing it (control bit 1). A fade-to-black needs this or the screen uncovers itself.
`mode`	input	Handler path selector taken from the argument byte. The meaning is specific to each command.
`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:

CRadiFade::SetBattleInFade(unsigned int,float,CVector*)
CRadiFade::SetColorFade(unsigned int,unsigned int,float,unsigned int,unsigned char)
CRadiFade::SetDissolves(unsigned int,unsigned int,float,unsigned int,float)

Bit masks

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

0x0001 0xFFFF 0x000F 0x0004