The advantage is that new commands can be added without compatibility-breaking networking changes; the disadvantage is that only one impulse can be sent at a time, and that the commands themselves are non-descriptive.
Impulse commands are generally used for development functions and/or cheats, and almost all require sv_cheats. See
These are available in most or all Source games.
|81||Gives the player the weapon_cubemap, used to test cubemaps.|
|100||Not a cheat||Toggle the player flashlight. Might require item_suit, depending on the game. Bound to F by default.|
|101||Gives player full health, all weapons, and ammo.|
|102||Spawns a VPhysics human skull (|
|103||Prints AI state of the NPC the player is looking at to the console. Requires developer mode.|
|106||Prints the class, targetname and model of the entity under the crosshairs to the console.|
|107||Prints the material that player is looking at to console. Only works on brushes: use mat_crosshair instead, which works on displacements too.|
|108||Sets the NPC under the crosshairs as the Debug NPC. Doesn't appear to have any effect?|
|195, 196, 197||Nonfunctional||Supposed to show the shortest path to the nearest air, large, and human nodes respectively.|
|200||Plays the current viewmodel's holster animation. Doesn't actually prevent attacking. (The current weapon just won't be visible.) Not all weapons have holstering sequences.|
|201||Not a cheat||Creates a player spray on the brush under the crosshair. Use Options > Multiplayer to set a spray. Default key is T.|
|202||Obsolete||Spray blood over the brush under the crosshair.|
|202||Not a cheat||Plays a "player jingle" soundfile. To enable jingles, set |
Note: This works with the SDK codebase, but games typically appear to disable jingles.
|203||Remove the entity under the crosshairs. Same as |
|50||Not a cheat||Makes player command (call/send) a squad. Default key: |
|52||Rangefinder. Prints Starting position, ending position, 3D distance and 2D distance.|
|82||Spawns an armed buggy.|
|83||Spawns an airboat.|