Bodygroup

Bodygroups are a feature of the Source Engine that allow a model to turn off certain areas, which enables for new, seperate models to take their place. Bodygroups do not alter hitboxes, they are merely a cosmetic feature. Bodygroups are used frequently on several items in Team Fortress 2 to add or take away from player and weapon models when needed. Bodygroups are also the primary factor that allows for hats to be equipped on most classes.

Player Models and Bodygroups

Class	Locations	Used by
Scout	Hat	All hats, except Batter's Helmet
	Headset	All hats, except Batter's Helmet
	Shoes and socks	Essential Accessories and Flip-Flops
	Dogtags	Sign of the Wolf's School
Soldier	Hat	All Hats, except Soldier's Stash and Exquisite Rack
	Grenades	Lumbricus Lid (Grenades)
	Medal	Many Miscellaneous items
Pyro	Head	Foster's Facade
	Grenades	Stockbroker's Scarf
Demoman	"Smile"	Grenade Launcher taunt
	Shoes	Ali Baba's Wee Booties
Heavy	Hands	Killing Gloves of Boxing, Gloves of Running Urgently and Fists of Steel.
Engineer	Hat	All Hats except Mining Light and Industrial Festivizer.
	Right Arm	Gunslinger and Short Circuit.
Medic	Backpack	Quick-Fix.
Sniper	Arrows	Huntsman.
	Hat	All Hats, except the Trophy Belt.
	Bullets	Sydney Sleeper
Spy	Mask	Disguise Kit.

Bugs

• Items that turn off specific bodygroups will not cast a shadow.
• Occasionally, bodygroups will disappear, leaving empty space on the model.
• Occasionally, items will fail to turn off the default bodygroup, leading to the original group clipping into the replacement model.

Update history

• When the table is done I'll fill this in.

External links

• $bodygroup on the Valve Developer Community – technical explanation of $bodygroup