godot-3d-essentials

1# Godot 3D Essentials (4.x)
2 
3Assemble a working 3D scene: transforms, camera, lights, environment/post, materials, and
4`GridMap` blockouts. Targets **Godot 4.7**.
5 
6## When to use
7 
8- Use when starting or fixing a 3D scene: positioning a `Camera3D`, adding lights, setting
9  up a `WorldEnvironment` (sky, ambient, tonemap, glow/SSAO), assigning materials, or
10  building levels with `GridMap`.
11 
12**When *not* to use:** writing spatial shaders → `godot-shaders`; 3D physics bodies and
13raycasts → `godot-physics`; character animation blending → `godot-animation`; full FPS
14template → the `fps-shooter` genre skill.
15 
16## Core workflow
17 
181. **Everything 3D is a `Node3D`** with a `Transform3D` (position, rotation basis, scale).
19   Move with `global_position`, rotate with `rotate_y(angle)` or `look_at(target)`.
202. **Add a `Camera3D`.** Mark it `current` (or call `make_current()`); set `fov`, `near`,
21   `far`. Parent it to a rig/pivot for orbit or follow cameras.
223. **Light the scene.** A `DirectionalLight3D` is the sun; `OmniLight3D`/`SpotLight3D` are
23   local; `AreaLight3D` (4.7+) is a rectangular panel light that costs more than omni/spot.
24   Enable shadows per light. Without lights and ambient, surfaces render black.
254. **Add a `WorldEnvironment`** with an `Environment` resource: background (sky/color),
26   ambient light, tonemap, and post (glow, SSAO, fog, adjustments).
275. **Give meshes materials** (`StandardMaterial3D` or a `ShaderMaterial`) on
28   `MeshInstance3D`.
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