Source SDK Documentation
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General
Creating, organizing, and releasing your project.
Step-by-step guides on a variety of topics.
In-depth discussion on the engine's features.
Explanations for terms you may encounter.
Art
Maps are the 3D worlds where everything comes together.
Models are the detailed 3D objects that appear in the game world.
Quality audio adds a fourth dimension to your world.
Effects like smoke, blood, and fire are created with particles.
Direct digital actors with choreographed scenes.
Code and Logic
A mod's C++ code defines map and game rules.
Adds new functionality or logic to entities.
I/O system adds logic to your map.
Controls complex NPC behaviors and actions.
Other
Official tools made by Valve for their games.
Useful developer tools created by the community.
