Light

Table of contents
1 Entity Description
2 Keyvalues
3 Flags
4 Inputs
5 Outputs

Entity Description

An invisible light source. If named, it can be turned on and off through inputs.

The light entity is basic yet essential to almost every map.

Keyvalues

• targetname

<target_source> The name that other entities refer to this entity by.

• _light

<color255 & integer> The color and brightness of the light. RGB colors need to be between 0 and 255. Brightness can be higher.

• style

<choices> A preset pattern of diverse flicker effects.

Literal Value	Description
0	Normal
1	Flicker A
2	Slow, strong pulse
3	Candle A
4	Fast strobe
5	Gentle pulse
6	Flicker B
7	Candle B
8	Candle C
9	Slow strobe
10	Fluorescent flicker
11	Slow pulse, noblack

 Note: Applies only to light entities with targetname set.

• pattern

<string> A string of characters defining a custom pattern, a being most dark and z being most bright.

 Note: Applies only to light entities with targetname set.

• _constant_attn

<float> Brightens or dims the intensity of the light near its entity. A high constant will dim the light.

• _linear_attn

<float> Brightens or dims the intensity of the light emitted. A high linear will dim the light.

• _quadratic_attn

<float> Decrease to make the light travel farther. Default is 1, ranges are 0 to 1.

• _distance

<integer> Stops the light emitted from reaching beyond this distance. Useful in cutting down compiling time by not making lights extend infinitely.

• _lightHDR [Episode One Update]

<color255> BrightnessHDR

• _fifty_percent_distance [Episode One Update]

<float> 50 percent falloff distance

Distance at which brightness should fall off to 50%. If set, overrides linear constant and quadratic paramaters.

• _zero_percent_distance [Episode One Update]

<float> 0 percent falloff distance

Distance at which brightness should fall off to negligible (1/256)%. Must set _fifty_percent_distance to use.

Flags

• 1 : Initially Off

Inputs

• targetname

<target_source> The name that other entities refer to this entity by.

• TurnOn

Turns the light on.

• TurnOff

Turns the light off.

• Toggle

Toggles the light on or off.

• SetPattern

Sets the light's custom appearance to the input's parameters.

• FadeToPattern

Fades from the light's old pattern to the new one.

Outputs

• targetname

<target_source> The name that other entities refer to this entity by.

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