Basic Map Creation and Geometry

Creating your own maps in Garry's Mod is a fundamental aspect of the sandbox experience, allowing for unique environments and gameplay scenarios. This process begins with understanding basic map creation principles and the fundamental building blocks: geometry.

Garry's Mod utilizes the Source engine, which employs a powerful level editor known as Hammer. While advanced map creation involves complex techniques, understanding basic geometry is the first step. This involves using brushes to construct solid objects like walls, floors, and platforms. These brushes are the fundamental elements that define the playable space and its physical properties.

Brushes: The primary tools for creating geometry. They are essentially 3D shapes (cubes, wedges, etc.) that form the solid world.
Entities: Beyond brushes, maps are populated with entities. These are objects with specific functions, such as spawn points, lights, props, and trigger volumes.
Textures: Brushes are covered with textures to give them visual appearance. Applying textures correctly is crucial for both aesthetics and gameplay.

When starting, focus on simple shapes and layouts. A basic room with a floor, four walls, and a ceiling is a great starting point. Experiment with different brush shapes and sizes to create varied structures. Remember to consider scale and player movement.

Essential Mapping Concepts

Concept	Description
Player Spawn	Where players will appear when they join the map.
Lighting	Crucial for visibility and atmosphere. Entities like 'light_environment' and 'light' are used.
Collision	Ensuring brushes have proper collision so players and props interact realistically.
Optimization	Basic techniques to ensure the map runs smoothly, like avoiding overly complex geometry.

As you become more comfortable, you can explore more advanced techniques like creating curves, detailing your maps with props, and implementing basic logic with entities. The key is to start simple and gradually build your skills.