$bodygroup: Difference between revisions
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Note:Body groups cannot change skeletons or collision models.
Note:Since body group polygons never share vertices with the base mesh in Source models, there need not be seams between properly-made components.
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{{LanguageBar|title = $bodygroup}} | {{LanguageBar|title = $bodygroup}}{{tabsBar|main=gs|base=$bodygroup}} | ||
{{this is a|QC command|name=$bodygroup}} | {{this is a|QC command|name=$bodygroup}} It defines a group of meshes that can be turned on or off, or changed entirely. Server code can change their state. | ||
{{toc-right}} | {{toc-right}} | ||
{{note|Body groups '''cannot''' change [[skeleton|skeletons]] or [[collision model|collision models]].}} | {{note|Body groups '''cannot''' change [[skeleton|skeletons]] or [[collision model|collision models]].}} | ||
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$bodygroup sights | $bodygroup sights | ||
{ | { | ||
studio ironsights | studio "ironsights" | ||
studio laser_dot | studio "laser_dot" | ||
blank | blank | ||
} | } | ||
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$bodygroup chest | $bodygroup chest | ||
{ | { | ||
studio chest_with_no_armor | studio "chest_with_no_armor" | ||
studio chest_with_light_armor | studio "chest_with_light_armor" | ||
studio chest_with_heavy_armor | studio "chest_with_heavy_armor" | ||
studio chest_with_super_armor | studio "chest_with_super_armor" | ||
} | } | ||
</source> | </source> | ||
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$lod 12 | $lod 12 | ||
{ | { | ||
replacemodel chest_with_no_armor chest_with_no_armor_lod1 | replacemodel "chest_with_no_armor" "chest_with_no_armor_lod1" | ||
replacemodel chest_with_light_armor chest_with_light_armor_lod1 | replacemodel "chest_with_light_armor" "chest_with_light_armor_lod1" | ||
replacemodel chest_with_heavy_armor chest_with_heavy_armor_lod1 | replacemodel "chest_with_heavy_armor" "chest_with_heavy_armor_lod1" | ||
replacemodel chest_with_super_armor chest_with_super_armor_lod1 | replacemodel "chest_with_super_armor" "chest_with_super_armor_lod1" | ||
} | } | ||
$lod 18 | $lod 18 | ||
{ | { | ||
replacemodel chest_with_no_armor chest_with_no_armor_lod2 | replacemodel "chest_with_no_armor" "chest_with_no_armor_lod2" | ||
replacemodel chest_with_light_armor chest_with_light_armor_lod2 | replacemodel "chest_with_light_armor" "chest_with_light_armor_lod2" | ||
replacemodel chest_with_heavy_armor chest_with_heavy_armor_lod2 | replacemodel "chest_with_heavy_armor" "chest_with_heavy_armor_lod2" | ||
replacemodel chest_with_super_armor chest_with_super_armor_lod2 | replacemodel "chest_with_super_armor" "chest_with_super_armor_lod2" | ||
} | } | ||
$shadowlod | $shadowlod | ||
{ | { | ||
replacemodel chest_with_no_armor chest_with_no_armor_lod2 | replacemodel "chest_with_no_armor" "chest_with_no_armor_lod2" | ||
replacemodel chest_with_light_armor chest_with_light_armor_lod2 | replacemodel "chest_with_light_armor" "chest_with_light_armor_lod2" | ||
replacemodel chest_with_heavy_armor chest_with_heavy_armor_lod2 | replacemodel "chest_with_heavy_armor" "chest_with_heavy_armor_lod2" | ||
replacemodel chest_with_super_armor chest_with_super_armor_lod2 | replacemodel "chest_with_super_armor" "chest_with_super_armor_lod2" | ||
} | } | ||
</source> | </source> | ||
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<source lang=cpp> | <source lang=cpp> | ||
int BodyGroup_Sights = FindBodygroupByName("sights"); // calculate this value once | |||
SetBodygroup( BodyGroup_Sights , 1 ); // laser dot | SetBodygroup( BodyGroup_Sights , 1 ); // laser dot | ||
</source> | </source> | ||
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$bodygroup "travel" | $bodygroup "travel" | ||
{ | { | ||
studio "delorean_Notravel | studio "delorean_Notravel" | ||
studio "Delorean_Yestravel | studio "Delorean_Yestravel" | ||
studio "Delorean_brokentravel | studio "Delorean_brokentravel" | ||
} | } | ||
$sequence "charger_escape_b" { | $sequence "charger_escape_b" { | ||
"racecar_anims | "racecar_anims/charger_escape_b" | ||
{ event '''AE_CL_BODYGROUP_SET_VALUE 0 "travel 0"''' } // On frame 0 Sets model to show body 0 (first variant) of the "Travel" Bodygroup. Being "delorean_Notravel.smd" | { event '''AE_CL_BODYGROUP_SET_VALUE 0 "travel 0"''' } // On frame 0 Sets model to show body 0 (first variant) of the "Travel" Bodygroup. Being "delorean_Notravel.smd" | ||
{ event '''AE_CL_BODYGROUP_SET_VALUE 50 "travel 1"''' } // On frame 50 Sets model to show body 1 of the same bodygroup. Being "Delorean_Yestravel.smd" | { event '''AE_CL_BODYGROUP_SET_VALUE 50 "travel 1"''' } // On frame 50 Sets model to show body 1 of the same bodygroup. Being "Delorean_Yestravel.smd" | ||
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{ | { | ||
blank // Disabled state | blank // Disabled state | ||
studio "myBodyGroup | studio "myBodyGroup" // Enabled state | ||
} | } | ||
$sequence "Sequence_1" { | $sequence "Sequence_1" { | ||
"anims | "anims/Thing_1" | ||
{ event '''AE_CL_ENABLE_BODYGROUP 10 "Bodygroup_1"''' } // On Frame 10 Enables bodygroup_1 | { event '''AE_CL_ENABLE_BODYGROUP 10 "Bodygroup_1"''' } // On Frame 10 Enables bodygroup_1 | ||
} | } | ||
$sequence "Sequence_2" { | $sequence "Sequence_2" { | ||
"anims | "anims/Thing_2" | ||
{ event '''AE_CL_DISABLE_BODYGROUP 50 "Bodygroup_1"''' } // On Frame 50 Disables bodygroup_1 | { event '''AE_CL_DISABLE_BODYGROUP 50 "Bodygroup_1"''' } // On Frame 50 Disables bodygroup_1 | ||
} | } | ||
Latest revision as of 20:09, 16 July 2025
$bodygroup is a QC command available in all 
Source games. It defines a group of meshes that can be turned on or off, or changed entirely. Server code can change their state.
Note:Body groups cannot change skeletons or collision models.Example
This body group allows a weapon to have iron sights, laser sights, or no sights at all:
$bodygroup sights
{
studio "ironsights"
studio "laser_dot"
blank
}
This body group defines the entire chest region of the model, which spans multiple bones:
$bodygroup chest
{
studio "chest_with_no_armor"
studio "chest_with_light_armor"
studio "chest_with_heavy_armor"
studio "chest_with_super_armor"
}
Note:Since body group polygons never share vertices with the base mesh in Source models, there need not be seams between properly-made components.Bodygroups in Level of Detail Meshes
Using Level of Detail meshes - especially for high-poly geometry - is highly recommended. Body groups can be used in $lod strings in the same method as normal geometry meshes:
$lod 12
{
replacemodel "chest_with_no_armor" "chest_with_no_armor_lod1"
replacemodel "chest_with_light_armor" "chest_with_light_armor_lod1"
replacemodel "chest_with_heavy_armor" "chest_with_heavy_armor_lod1"
replacemodel "chest_with_super_armor" "chest_with_super_armor_lod1"
}
$lod 18
{
replacemodel "chest_with_no_armor" "chest_with_no_armor_lod2"
replacemodel "chest_with_light_armor" "chest_with_light_armor_lod2"
replacemodel "chest_with_heavy_armor" "chest_with_heavy_armor_lod2"
replacemodel "chest_with_super_armor" "chest_with_super_armor_lod2"
}
$shadowlod
{
replacemodel "chest_with_no_armor" "chest_with_no_armor_lod2"
replacemodel "chest_with_light_armor" "chest_with_light_armor_lod2"
replacemodel "chest_with_heavy_armor" "chest_with_heavy_armor_lod2"
replacemodel "chest_with_super_armor" "chest_with_super_armor_lod2"
}
Programming
To change a body group's state:
int BodyGroup_Sights = FindBodygroupByName("sights"); // calculate this value once
SetBodygroup( BodyGroup_Sights , 1 ); // laser dot
By default, CBaseAnimating supports 4,294,967,296 combinations (32 bits), and CBaseViewModel supports 256 (8 bits). You can raise either of these by editing the relevant SendProp for m_nBody.
To calculate how many combinations you need, multiply the size of all your bodygroups together. The examples on this page total 3 * 4 = 12...but add two more groups the same size and you're up at 144. The figure grows exponentially.
Switching bodygroup via $Sequence
It is possible to swap bodygroups during sequences, using the following event:
- AE_CL_BODYGROUP_SET_VALUE <frame> "<bodyGroupName> <body>" Note:So far only tested in
and 
. Seems to be fine but certain functions in the game can restart it to default making it somewhat "buggy". - AE_CL_ENABLE_BODYGROUP <frame> "<bodyGroupName>"
- AE_CL_DISABLE_BODYGROUP <frame> "<bodyGroupName>"
Examples:
$bodygroup "travel"
{
studio "delorean_Notravel"
studio "Delorean_Yestravel"
studio "Delorean_brokentravel"
}
$sequence "charger_escape_b" {
"racecar_anims/charger_escape_b"
{ event AE_CL_BODYGROUP_SET_VALUE 0 "travel 0" } // On frame 0 Sets model to show body 0 (first variant) of the "Travel" Bodygroup. Being "delorean_Notravel.smd"
{ event AE_CL_BODYGROUP_SET_VALUE 50 "travel 1" } // On frame 50 Sets model to show body 1 of the same bodygroup. Being "Delorean_Yestravel.smd"
{ event AE_CL_BODYGROUP_SET_VALUE 220 "travel 2" } // On frame 220 Sets model to show body 2 of the same bodygroup. Being "Delorean_brokentravel"
}
$bodygroup "Bodygroup_1"
{
blank // Disabled state
studio "myBodyGroup" // Enabled state
}
$sequence "Sequence_1" {
"anims/Thing_1"
{ event AE_CL_ENABLE_BODYGROUP 10 "Bodygroup_1" } // On Frame 10 Enables bodygroup_1
}
$sequence "Sequence_2" {
"anims/Thing_2"
{ event AE_CL_DISABLE_BODYGROUP 50 "Bodygroup_1" } // On Frame 50 Disables bodygroup_1
}