To show sky in Half-Life, use the generic texture named SKY wherever you want the sky to appear, then you set the actual sky name as the value of the "environment map (cl_skyname)" property in the Map Properties (accessible through the Map menu). Below are the valid sky names and their corresponding lateral textures (the top and bottom texture of the skybox has been left out to make for easier formatting).
Note: when setting the name of the sky in the editor, do not putcl_in front of the skyname. For example,2desertis correct, whilecl_2desertis not correct.
Due to the high graphical content of this page, its load time may be lengthy.
This article was originally published on the Valve Editing Resource Collective (VERC). TWHL only archives articles from defunct websites. For more information on TWHL's archiving efforts, please visit the TWHL Archiving Project page.