Unity 6 Wind Simulation – Beginner Guide

🌪 Overview

Welcome to the Unity 6 Wind Simulation Project! This real-time simulation includes:

• Streamline wind visualization with color-coded velocity & turbulence.
• Adjustable wind properties (speed, turbulence, vortex intensity, GPU toggle).
• Building deflection system (wind redirects around objects).
• Real-world weather data support (via EPW files).

Designed for novices, this guide will help you set up & run the simulation in Unity 6.

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📥 Installation & Setup

✅ 1. Prerequisites

• Unity Hub with Unity 6 (6000.0.39f1 LTS) installed.
• Universal Render Pipeline (URP) enabled.
• Windows/Linux/macOS Build Support.

✅ 2. Creating a New Unity Project

1. Open Unity Hub → New Project.
2. Select "3D Sample Scene (URP)" template.
3. Name it "Wind_Simulation" → Click Create.

✅ 3. Adding the Wind Simulation Files

1. Download this repository.
2. Copy Assets/, ProjectSettings/, and Packages/ into your new project folder.
3. Open Unity (if not open) → Click Add Project → Select the folder.
4. Wait for Unity to re-import.

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🎮 Running the Simulation

🎬 1. Open the Scene

• Project Window → Assets/Scenes/WindSimulation.unity → Double-click to open.

🎛 2. Assign the UI

1. Find the GameObject with WindUIManager.cs (e.g. UIManagerObject).
2. In the Inspector, set UIDocument > Source Asset to WindUI.uxml.

▶ 3. Press Play

• The wind simulation runs in real time.
• UI appears with sliders, toggles & buttons.

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🌟 Features & Controls

🏙 Building Management

• Add Building → Places a 40m cube as a wind obstacle.
• Import OBJ → Loads custom building models (.obj or .fbx).

💨 Wind Controls

• Wind Speed → Adjusts airflow velocity.
• Turbulence → Controls random swirls.
• Vortex Intensity → Increases eddies & rotation.
• Height-Based Wind → Higher buildings face stronger winds.
• GPU Compute → If supported, faster wind updates (else, CPU fallback).

🌀 Real-World Wind Data (EPW)

• Load an .epw file → WindSpeed & Direction auto-adjust to real weather.

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🛠 Additional Tools

📂 Importing OBJ/FBX Models

• Click "Import Building Model" → Select .obj or .fbx.
• The model loads into the scene and acts as a wind obstacle.

🔧 Auto-Generate Sample Scene (Editor-Only)

• Unity Menu → "Tools > Create Wind Simulation Sample Scene".

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🏗 How the Wind Works

🌊 Wind Lines (Streamlines)

• Generated using Bezier curves for smooth airflow.
• Color-coded: Blue = Slow, Red = Fast.

⛩ Building Deflection

• Wind bends around obstacles tagged "Building".
• Uses Physics OverlapSphere to detect structures.

⚙ GPU/CPU Performance

• If GPU Compute is supported, it’s 10x faster.
• If GPU isn’t available, it automatically switches to CPU.

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📜 License: GPL v3

• ✅ You can modify & share this project freely.
• ⚠ If you distribute changes, they must remain open-source.
• ⚠ No Warranty: Use at your own risk.

Full license: GNU GPL v3

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🎯 Ready to Start? Press Play & enjoy your real-time wind simulation! 🚀