env_spritetrail

env_spritetrail is a point entity available in all Source games.

It frequently emits a sprite, intended to create a trail effect when moving.

In code, it is represented by theCSpriteTrailclass, defined in theSpriteTrail.cppfile.

Todo: Add applicable properties from env_sprite. Not all work, such as scale, and the alpha input appears to be a boolean, rendering it invisible for values less than 1.

Keyvalues

Lifetime (lifetime) <float>

How long the beam is shown.

Start Width (startwidth) <float>

The width of the beam to the beginning.

End Width (endwidth) <float>

The width of the beam when it has full expanded.

Sprite Name (spritename) <string>

The material to draw.

Animated (animate) <boolean> !FGD

Confirm:Supposed to tell the sprite to animate if it can, however only framerate appears to control this.

RenderFields:

Render Mode (rendermode) <choices>

Set a non-standard rendering mode on this entity.

Render Modes

0: Normal 1: Color 2: Texture 3: Glow 4: Solid/Alphatest 5: Additive 6: Removed, does nothing 7: Additive Fractional Frame 8: Alpha Add 9: World Space Glow 10: Don't Render

Render FX (renderfx) <choices>

Various somewhat legacy alpha effects. See render effects

Render Amount / Transparency (renderamt) <integer 0–255>

Transparency amount, requires a Render Mode other than Normal. 0 is invisible, 255 is fully visible.

Render Color (R G B) (rendercolor) <color255>

Color tint.

Disable Receiving Shadows (disablereceiveshadows) <boolean>

Prevent the entity from receiving shadows on itself.

Name (targetname) <string>

The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g. parentname or target).
Also displayed in Hammer's 2D views and Entity Report.

See also:  Generic Keyvalues, Inputs and Outputs available to all entities

Inputs

RenderFields:

Alpha <integer 0–255>

Sets the entity's transparency to a number from 0 (invisible) to 255 (fully visible). Requires the entity to have its rendermode set to a number other than 0.

Color <color255>

Sets an RGB color for the entity.