env_sun

Example of env_sun working with sky_day01_04_hdr skybox. (LDR (left) HDR (right))

Class hierarchy
CSun ↳CBaseEntity
sun.cpp

Template:Entity It places a glowing sun effect skybox where it does not parallax, giving the impression that it is nearly infinitely far away. The entity does not contribute any actual lighting; it is merely a visual representation of the Sun. Use light_environment to provide actual sunlight for your map.

Important:This is a preserved entity in .
If the game has round restart mechanics this entity may not behave as expected:

More info

On a new round entities with this classname will intentionally not reset. You can use logic_auto to emulate resetting it. Killing it removes it forever, as it is not respawned on a new round. It cannot be spawned with a point_template. Parenting this with non-preserved entities may have undesirable effects.

When the sun is looked at directly, it will transition to the properties of an "overlay".

Bug:Centering the player's view perfectly on the sun will render it invisible, even if there is no crosshair. This has been fixed since .  [todo tested in ?]

Fix:A fix for this bug can be found here: General_SDK_Snippets_&_Fixes#Fix_env_sun_sprite_disappearing_in_sky_when_you_look_at_it

Note:Outdated for Black Mesa because this game for sun use env_lensflare and newLight_Dir, both don't have the bug and looks much more modern. These are the main reasons why it is recommended to never use env_sun in levels for this game.

Keyvalues

Name (targetname) <string>[ Edit ]

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

UseAngles (use_angles) <boolean>

The old way to orient env_sun is to use Viewer entity. The new way is by Pitch Yaw Roll. If you want to use the new way, set this property to YES.

Viewer entity (target) <targetname>

Name of an entity (probably sky_camera) used to determine where the sun is in the skybox. The resulting sun sprite will be positioned based on a line starting from the Viewer entity towards the env_sun.

Pitch (pitch) <float>

This value sets the pitch position of the sun. It overrides the Pitch in Pitch Yaw Roll, even if left at 0, so it needs to be specified. This Pitch is reverse of the normal, so 90 is straight up, while -90 is straight down.

Yaw (angle) <float> !FGD

Override for Yaw in Pitch Yaw Roll, similar to Pitch.

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

Color of the sun. The effect is additive with the sky: a pure yellow sun with a bright blue sky will appear white in-game; change the color to account for this.

Overlay Color (R G B) (overlaycolor) <color255>

Color of the sun overlay.

Size (size) <integer>

Size of the sun.

Overlay Size (overlaysize) <integer>

A value of -1 means the overlay will act the old way^[Clarify].

Material Name (material) <sprite>

Material of the inner glow.

Overlay Material Name (overlaymaterial) <sprite>

Material of the overlay glow.

HDR color scale (HDRColorScale) <float>

Color multiplier when in HDR mode.

Glow Distance Scale (glowDistanceScale) <float> (in all games since )

Scales the distance used to test for sun glow occlusion. If the player can see any part of the skybox within this range, the overlay will render.

Inputs

TurnOn

Enable sun rendering.

TurnOff

Disable sun rendering.

SetColor <color255RedirectInput/color32>

Sets Sun Color.

See Also

• light_environment
• env_cascade_light
• Advanced Lighting
• Effect flags (dynamic light effects)
• newLight_Point
• env_lensflare