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Will Stuckey
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environment/LIBRARY_MANAGEMENT.md
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environment/LIBRARY_MANAGEMENT.md
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# Godot C# Library Management with Git Submodules
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## Overview
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Manage reusable C# libraries across multiple Godot projects using Git submodules. Each library is a separate repository that game projects include as submodules.
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## Directory Structure
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```
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~/GameDev/
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├── Godot/ # Engine installation
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├── libraries/ # Local library development
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│ ├── utilities/
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│ ├── audio-manager/
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│ └── ui-framework/
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└── projects/ # Game projects
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├── test-game/
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│ └── Libraries/ # Git submodules
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│ ├── utilities/
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│ └── audio-manager/
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└── puzzle-game/
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└── Libraries/
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└── utilities/
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```
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**Git Organization:**
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- `library/` org - Reusable libraries
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- `project/` org - Game projects
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## Prerequisites
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- Godot v4.5.1+ (C# support)
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- .NET 8.0+
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- Git with Gitea access
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- Gitea organizations: `library` and `project`
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## Create a Library
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### 1. Initialize Repository
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```bash
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cd ~/GameDev/libraries
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git init utilities
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cd utilities
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mkdir -p Scripts
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```
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### 2. Configure Library
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**project.godot:**
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```ini
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[application]
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config/name="Utilities Library"
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config/features=PackedStringArray("4.3", "C#", "Forward Plus")
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[dotnet]
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project/assembly_name="EinSoftworks.Utilities"
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```
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**Utilities.csproj:**
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```xml
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<Project Sdk="Godot.NET.Sdk/4.3.0">
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<PropertyGroup>
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<TargetFramework>net6.0</TargetFramework>
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<EnableDynamicLoading>true</EnableDynamicLoading>
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<RootNamespace>EinSoftworks.Utilities</RootNamespace>
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<AssemblyName>EinSoftworks.Utilities</AssemblyName>
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</PropertyGroup>
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</Project>
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```
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### 3. Add Code
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**Scripts/MathUtils.cs:**
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```csharp
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using Godot;
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namespace EinSoftworks.Utilities
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{
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public static class MathUtils
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{
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public static float Clamp01(float value) => Mathf.Clamp(value, 0f, 1f);
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public static bool Approximately(float a, float b, float threshold = 0.001f)
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=> Mathf.Abs(a - b) < threshold;
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public static float DegreesToRadians(float degrees) => degrees * Mathf.Pi / 180f;
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public static float RadiansToDegrees(float radians) => radians * 180f / Mathf.Pi;
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}
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}
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```
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### 4. Create .gitignore
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```gitignore
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.godot/
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.import/
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.mono/
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bin/
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obj/
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*.tmp
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export_presets.cfg
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```
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### 5. Commit and Push
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```bash
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git add .
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git commit -m "Initial utilities library"
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git remote add origin https://git.ein-softworks.com/library/utilities.git
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git branch -M main
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git push -u origin main
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```
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## Create a Game Project
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### 1. Initialize Project
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```bash
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cd ~/GameDev/projects
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git init test-game
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cd test-game
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mkdir -p Scripts Scenes Libraries
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```
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### 2. Configure Project
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**project.godot:**
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```ini
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[application]
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config/name="Test Game"
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config/features=PackedStringArray("4.3", "C#", "Forward Plus")
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run/main_scene="res://Scenes/Main.tscn"
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[dotnet]
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project/assembly_name="TestGame"
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```
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**TestGame.csproj:**
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```xml
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<Project Sdk="Godot.NET.Sdk/4.3.0">
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<PropertyGroup>
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<TargetFramework>net6.0</TargetFramework>
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<EnableDynamicLoading>true</EnableDynamicLoading>
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<RootNamespace>TestGame</RootNamespace>
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</PropertyGroup>
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<ItemGroup>
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<ProjectReference Include="Libraries/utilities/Utilities.csproj" />
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</ItemGroup>
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</Project>
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```
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### 3. Add Library as Submodule
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```bash
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git submodule add https://git.ein-softworks.com/library/utilities.git Libraries/utilities
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git submodule update --init --recursive
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```
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### 4. Use Library in Code
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**Scripts/Main.cs:**
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```csharp
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using Godot;
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using EinSoftworks.Utilities;
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namespace TestGame
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{
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public partial class Main : Node2D
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{
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public override void _Ready()
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{
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float radians = MathUtils.DegreesToRadians(90f);
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GD.Print($"90° = {radians} rad");
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}
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}
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}
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```
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### 5. Create Scene and Commit
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Create `Scenes/Main.tscn` in Godot, then:
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```bash
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cp ../utilities/.gitignore .
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git add .
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git commit -m "Initial test game with utilities library"
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git remote add origin https://git.ein-softworks.com/project/test-game.git
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git branch -M main
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git push -u origin main
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```
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## Common Operations
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### Update Library to Latest
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```bash
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cd ~/GameDev/projects/test-game
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git submodule update --remote Libraries/utilities
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git add .
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git commit -m "Update utilities library"
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git push
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```
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In Godot: **Project → Reload Current Project**, then rebuild.
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### Update to Specific Version
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```bash
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cd ~/GameDev/projects/test-game/Libraries/utilities
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git checkout v1.2.0
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cd ../..
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git add Libraries/utilities
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git commit -m "Update utilities to v1.2.0"
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git push
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```
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### Add Another Library
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```bash
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cd ~/GameDev/projects/test-game
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git submodule add https://git.ein-softworks.com/library/audio-manager.git Libraries/audio-manager
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```
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Update **TestGame.csproj**:
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```xml
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<ItemGroup>
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<ProjectReference Include="Libraries/utilities/Utilities.csproj" />
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<ProjectReference Include="Libraries/audio-manager/AudioManager.csproj" />
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</ItemGroup>
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```
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```bash
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git add .
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git commit -m "Add audio-manager library"
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git push
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```
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### Create New Project with Existing Libraries
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```bash
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cd ~/GameDev/projects
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git init puzzle-game
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cd puzzle-game
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mkdir -p Scripts Scenes Libraries
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# Add libraries
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git submodule add https://git.ein-softworks.com/library/utilities.git Libraries/utilities
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git submodule add https://git.ein-softworks.com/library/audio-manager.git Libraries/audio-manager
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git submodule update --init --recursive
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# Create project.godot and .csproj with references
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# (see example structure above)
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git add .
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git commit -m "Initial puzzle game setup"
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git remote add origin https://git.ein-softworks.com/project/puzzle-game.git
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git push -u origin main
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```
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### Clone Project on New Machine
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```bash
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git clone --recursive https://git.ein-softworks.com/project/test-game.git
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# Or if already cloned
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cd test-game
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git submodule update --init --recursive
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```
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## Library Dependencies
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If one library depends on another, reference it in the .csproj:
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**Libraries/ui-framework/UIFramework.csproj:**
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```xml
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<ItemGroup>
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<ProjectReference Include="../utilities/Utilities.csproj" />
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</ItemGroup>
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```
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## Version Control
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### Create Library Release
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```bash
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cd ~/GameDev/libraries/utilities
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git tag -a v1.0.0 -m "Release v1.0.0 - Initial stable release"
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git push origin v1.0.0
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```
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### Development Workflow
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```bash
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# Library development
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cd ~/GameDev/libraries/utilities
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git checkout -b feature/new-utils
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# Make changes
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git add .
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git commit -m "Add new utility functions"
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git push origin feature/new-utils
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# Merge in Gitea, then pull main
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git checkout main
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git pull origin main
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# Update in project
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cd ~/GameDev/projects/test-game
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git submodule update --remote Libraries/utilities
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git add .
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git commit -m "Update utilities to latest"
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git push
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```
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## Best Practices
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**Library Design:**
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- Keep libraries focused and single-purpose
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- Use namespace pattern: `CompanyName.LibraryName`
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- Document public APIs with XML comments
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- Use semantic versioning (major.minor.patch)
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**Project Organization:**
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- Use kebab-case for repos, PascalCase for namespaces
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- Only include needed libraries
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- Test after library updates
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**Git Workflow:**
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- Use feature branches for development
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- Write clear commit messages
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- Push changes regularly
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- Tag important releases
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## Troubleshooting
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**Submodule empty:**
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```bash
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git submodule update --init --recursive
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```
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**Build errors:**
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- Godot → **Project → Reload Current Project**
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- **Project → Tools → C# → Create C# solution**
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- Rebuild
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**Missing references:**
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Check `.csproj` has all `<ProjectReference>` entries.
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**Submodule update conflicts:**
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```bash
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cd Libraries/utilities
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git stash
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git pull origin main
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git stash pop
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```
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**IntelliSense not working:**
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- Reload Godot project
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- Rebuild solution
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- Restart VS Code with project folder open
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