Guide · Agent skill

How to use the 3D Four Seasons agent skill

Updated 2026-11-02 · written with AI from the project's own documentation and checked against our catalogue data

The 3d-four-seasons skill is a set of instructions that teaches an AI agent how to make one 3D scene look like one place across spring, summer, fall and winter. It is written for developers, graphics engineers and designers who build walkthroughs, architectural visualisations or outdoor scenes and need seasonal controls. After this guide you will know what the skill changes, how to install it, how to ask for it in plain language and what to check in the result.

3D Four SeasonsMengTo/Skills · MIT Download the skill

Quick start

1Download the skill. Download the ZIP for 3d-four-seasons from our page.
2Unzip into a skills folder. Unzip it into ~/.claude/skills/ for personal use, or into .claude/skills/ inside your project.
3Or upload it in the Claude apps. In the Claude apps, open Settings → Capabilities → Skills and upload the skill.
4Describe the seasonal work. Ask in plain language for a season selector, a seasonal look or snow on exposed surfaces, and name the 3D scene you are working on.
5Review the output in four seasons. Capture the same camera view in each season and check that the scene is still recognisable and the camera controls still work.

What the skill makes the agent do

The skill gives the agent a playbook for seasonal changes in a 3D scene. Foliage, ground materials, sunlight, sky, snow and particles change together so the scene stays recognisable, while the camera and interactions are kept as they are.

The skill guides the agent to add a season selector that blends smoothly between states, keep snow and leaf changes consistent, and keep transitions fast and accessible. It is guidance and code snippets, not a finished component you can drop in.

Foliage: deciduous trees lose leaves in winter, evergreens are kept, and fall colours are species-specific.
Light and sky: sun strength, sky tone and haze shift with the season.
Ground and snow: settled snow is added to exposed upward-facing surfaces.
Particles: petals, falling leaves or sparse snow are used only where they serve the scene.

Install the 3d-four-seasons skill

Download the ZIP for the skill from our page. The skill folder contains agents/openai.yaml, REFERENCES.md and SKILL.md.

You can install it in one of two ways. For a personal setup, unzip the download into ~/.claude/skills/. For a single project, unzip it into the project's .claude/skills/ folder. Alternatively, in the Claude apps, open Settings → Capabilities → Skills and upload the skill there.

Personal install: unzip into ~/.claude/skills/
Project install: unzip into .claude/skills/ inside your project
Claude apps: Settings → Capabilities → Skills, then upload

Trigger the skill with natural requests

You do not need a special command. Describe the seasonal work you want in plain language, and mention the 3D context so the agent knows which playbook applies. The skill description names seasonal controls, architectural walkthroughs and outdoor scenes with four-season transitions as its main uses.

Name the parts of the scene you care about, such as the trees, the ground, the sky or the snow. Ask for a season selector if you want a control, and say whether you need a still image or an animated blend.

Add a season selector to my architectural walkthrough that blends between spring, summer, fall and winter.
Make the outdoor scene in this renderer look like winter, keeping the evergreens and the camera controls.
Show how snow should settle on exposed surfaces but not on the indoor floors in this model.

The skill uses a four-part blend in the order spring, summer, fall and winter. It accepts autumn as an alias for fall and normalises it to one internal key. Selecting a season sets a target blend, and each frame the current blend moves toward that target.

A new selection redirects the current blend rather than queuing another animation. The same state then feeds material uniforms, sky, lighting, particle density and optional ambient audio.

const presets = {
  spring: [1, 0, 0, 0], summer: [0, 1, 0, 0],
  fall: [0, 0, 1, 0], winter: [0, 0, 0, 1],
};
const weights = [0, 1, 0, 0];
let target = presets.summer;
function setSeason(name) {
  const key = name === 'autumn' ? 'fall' : name;
  if (!Object.hasOwn(presets, key)) return false;
  target = presets[key];
  return true;
}
function stepSeason(dt, reducedMotion = false) {
  const a = reducedMotion ? 1 : 1 - Math.exp(-1.4 * Math.min(Math.max(dt, 0), 0.05));
  for (let i = 0; i < 4; i++) weights[i] += (target[i] - weights[i]) * a;
}

Keep snow and foliage convincing

Use species-specific colour palettes and stable per-instance IDs. For winter, thin deciduous foliage gradually with a deterministic threshold or dither, keep evergreen coverage, and apply matching rules to shadow materials so bare branches do not cast summer shadows.

For inexpensive settled snow, the skill combines the winter weight with upward-facing world-space normals and an exposure mask. Upward normals alone also whiten sheltered tables and indoor floors, so tag exposed objects or supply shelter masks. A material overlay does not add thickness, so add snow-cap geometry only for close-up edges where depth matters.

snow = winterWeight * smoothstep(0.3, 0.85, worldNormal.y) * exposure

Keep transitions responsive and accessible

Preallocate particle pools and reuse materials and geometry. Change uniforms rather than recompiling shaders or rebuilding the world. Keep season independent of time of day and weather, and derive one final lighting state from those inputs so controllers do not overwrite each other.

Use keyboard-accessible controls with a visible selected state and updated accessible labels. Under reduced motion, apply the chosen season immediately and keep a composed still scene. Pause continuous animation while the scene is hidden.

Check the result in all four seasons

Capture all four seasons from the same camera. Each should be recognisable without its label. Then switch quickly through spring, winter, summer and fall during a transition and look for colour drift, stale shadows, allocation spikes and lost camera controls.

Also check snow exposure indoors and outdoors, evergreen retention, particle count and desktop and mobile rendering.

What people use it for

Adding a spring, summer, fall and winter selector to an architectural walkthrough.
Changing an outdoor scene to winter while keeping evergreens and the existing camera controls.
Working out where settled snow should appear on exposed roofs and ground but not on indoor floors.
Adding a season switcher to an existing WebGL or 3D renderer without rebuilding the scene.

Frequently asked questions

Is the 3D Four Seasons agent skill free to use?

The skill is published under the MIT licence, as listed on the item page. Check the licence file in the repository for the full terms before you reuse it in a commercial project.

What do I need to use the 3d-four-seasons skill?

The item lists no requirements. It does not run scripts and does not use the network. You do need an agent environment that supports skills, plus a 3D scene or renderer to apply the guidance to.

Where do I put the skill files?

Unzip the downloaded ZIP into ~/.claude/skills/ for personal use, or into .claude/skills/ in a project folder. You can also upload it in the Claude apps under Settings → Capabilities → Skills.

Is this a ready-made seasons component I can drop into my project?

No. The skill is guidance and code snippets, not a library. It explains how to structure seasonal states, foliage, snow and transitions, and you still need to implement them in your renderer.

Does it simulate realistic snowfall or climate?

No. The skill states that full snowfall physics and climate simulation are extensions beyond what it covers. It focuses on visual season states for a scene.

My camera controls stopped working after I switched seasons. What should I check?

The verification section tells you to switch seasons quickly during a transition and look for lost camera controls. Check that season changes only update uniforms and lighting and do not rebuild the world or reset camera state.

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Our verdict

Use this skill if you are a developer, graphics engineer or designer who needs a coherent four-season look for a 3D walkthrough, architectural visualisation or outdoor scene and is comfortable writing the code yourself. Pick something else if you need a finished, drop-in seasons component, a non-3D or non-real-time project, or realistic climate or snowfall physics.

Download the skill