Env spritetrail

From Valve Developer Community

The title given to this article is incorrect due to technical limitations. The correct title is env_spritetrail.

This Point-based Entity is available in all Source Games using the Episode 1 Engine.

Table of contents

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Entity description

A trail effect for parenting with other entities.

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Keyvalues

targetname <target_source>

Defines the name that other entities refer to this entity by.

hammerid [Episode Two Update]

<integer readonly> This id is used for debugging purposes in Hammer.

parentname <target_destination>

Specifies the targetname of this entity's Parent in a movement hierarchy. Child entities move with their Parent.

lifetime

<float> Lifetime

startwidth

<float> Start Width

endwidth

<float> End Width

spritename

<material> Sprite Name

renderamt

<integer> FX Amount (0 - 255) The FX amount is used by the selected Render Mode.

rendercolor

<color255> The FX color is used by the selected Render Mode.

rendermode

<choices> Render Mode

Literal Value	Description
0	Normal
4	Solid
5	Additive

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Inputs

Kill

Removes this entity from the world.

KillHierarchy

Removes this entity and all its children from the world.

AddOutput <string>

Evaluates a keyvalue/output on this entity. It can be potentially very dangerous, use with care.

Format: <key> <value>

Format: <output name> <targetname>:<inputname>:<parameter>:<delay>:<max times to fire (-1 == infinite)>

FireUser1-4

Causes this entity's OnUser1-4 outputs to be fired. See User Inputs and Outputs.

SetParent <target_destination>

Changes the entity's parent in the movement hierarchy.

SetParentAttachment <string>

Change this entity to attach to a specific attachment point on its parent. Entities must be parented before being sent this input. The parameter passed in should be the name of the attachment.

SetParentAttachmentMaintainOffset <string> [Episode One Update]

Change this entity to attach to a specific attachment point on it's parent. Entities must be parented before being sent this input. The parameter passed in should be the name of the attachment. The entity will maintain it's position relative to the Parent's Origin and Angles at the time it is attached.