MonoGame.Samples/RectangleCollision

Rectangle Collision Sample

This is a MonoGame 3.8.* sample project that demonstrates rectangle collision detection. The game features a player character that must avoid falling blocks in a simple 2D environment.

Project Description

The Rectangle Collision Sample showcases:

• Basic 2D sprite rendering
• Rectangle collision detection
• Player input handling (keyboard)
• Random block spawning
• Game state management (collision detection triggers)

The player controls a character that can move left and right using the keyboard. Blocks fall from the top of the screen, and the game detects when the player collides with any block.

Project Status

✅ Windows - Building and running successfully
✅ DesktopGL - Building and running successfully
✅ Android - Building successfully (requires Android SDK to deploy)
⚠️ iOS - Project created (requires Mac + Xcode to build and test)

Building and Running

Prerequisites

• .NET 8.0 SDK or later
• For iOS: Xcode and Mac development environment
• For Android: Android SDK

Directory Structure

RectangleCollisionSample/
│
├── Core/
│   ├── Game1.cs
│   ├── Program.Core.cs
│   ├── RectangleCollisionSample.Core.csproj
│   └── Content/
│       ├── Block.xnb
│       └── Person.xnb
│
├── Platforms/
│   ├── Windows/
│   │   ├── Program.cs
│   │   ├── RectangleCollisionSample.Windows.csproj
│   │   └── app.manifest
│   ├── Desktop/
│   │   ├── Program.cs
│   │   └── RectangleCollisionSample.DesktopGL.csproj
│   ├── Android/
│   │   ├── MainActivity.cs
│   │   ├── RectangleCollisionSample.Android.csproj
│   │   └── AndroidManifest.xml
│   └── iOS/
│       ├── Program.cs
│       ├── RectangleCollisionSample.iOS.csproj
│       └── Info.plist
│
├── .vscode/
│   ├── launch.json
│   └── tasks.json
│
├── RectangleCollisionSample.sln
└── README.md

Building and Running

Using Visual Studio

1. Open RectangleCollisionSample.sln in Visual Studio
2. Select the desired project under Platforms/ (Windows, Desktop, Android, iOS) as startup project
3. Build and run (F5)

Using VS Code

1. Open the project folder in VS Code
2. Use Ctrl+Shift+P to open command palette
3. Run "Tasks: Run Task" and select:
   • build-windows, build-desktopgl, or build-android to build
   • run-windows or run-desktopgl to run
4. Or use F5 to debug with the configured launch profiles

Using Command Line

# Build Windows version
dotnet build Platforms/Windows/RectangleCollisionSample.Windows.csproj

# Run Windows version
dotnet run --project Platforms/Windows/RectangleCollisionSample.Windows.csproj

# Build DesktopGL version
dotnet build Platforms/Desktop/RectangleCollisionSample.DesktopGL.csproj

# Run DesktopGL version
dotnet run --project Platforms/Desktop/RectangleCollisionSample.DesktopGL.csproj

# Build Android version
dotnet build Platforms/Android/RectangleCollisionSample.Android.csproj

# Build iOS version (on Mac)
dotnet build Platforms/iOS/RectangleCollisionSample.iOS.csproj

Game Controls

• Left Arrow / A: Move player left
• Right Arrow / D: Move player right
• Escape: Exit game

Content Files

The project uses pre-built XNB content files located in the Content/ folder:

• Person.xnb - Player character sprite
• Block.xnb - Falling block sprite

These files are automatically copied to the output directory during build.

Architecture Notes

• Uses MonoGame 3.8.* NuGet packages instead of source references
• Modern SDK-style project files for all platforms
• Shared source code across all platforms
• Platform-specific configurations and manifests where needed
• No Content Pipeline (.mgcb) file - uses pre-built XNB files directly

Dependencies

• MonoGame.Framework.Windows 3.8.*
• MonoGame.Framework.DesktopGL 3.8.*
• MonoGame.Framework.iOS 3.8.*
• MonoGame.Framework.Android 3.8.*
• MonoGame.Content.Builder.Task 3.8.*