MG Spatial Selection – Demo Project (UE5.7)

About This Demo

This project demonstrates how to use the MG Spatial Selection plugin inside a real Unreal Engine level.
It shows how to achieve high-performance, real-time spatial selection of actors using a hybrid CPU/GPU architecture.

Original Plugin: https://github.com/cem-akkaya/MGSpatialSelection

The demo includes:

• Material-Based Selection: Custom post-process effects using the MG Selection Mask node.
• Interface-Driven Interaction: Example units implementing IMGSpatialSelectionInterface.
• Enhanced Input Integration: Ready-to-use input mapping for box selection.
• Configurable Settings: Examples of MPC integration and decay effects.

If you encounter any issues, please open an issue on the plugin repository.
Feel free to contribute!

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How to Use the Demo

1. Download or clone this repository.
2. Ensure the MG Spatial Selection plugin is in the Plugins/ directory.
3. Right-click the .uproject → Generate Project Files.
4. Build the project using Visual Studio or Rider.
5. Open in Unreal Engine.
6. Open the Lvl_TopDown map and Play In Editor.

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Inside the Demo Project

Demo Map

• Lvl_TopDown: Simple top-down selection example.

Key Blueprints

• BP_TopDownCharacter: Manages the MGSpatialSelectionComponent for selection.
• SelectionTestActor_BP: Example of a selectable actor implementing the interface.

Features in Action

• High-Performance Selection: Uses native UBoxComponent for efficient overlap detection.
• Dynamic Terrain-Aware Mask: Pixel-perfect visuals that follow terrain geometry without CPU raycasts.
• MPC Integration: Real-time shader updates via Material Parameter Collections.
• Post-Selection Decay: Smooth "fade-out" effects when releasing the selection.

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Demo Images

RTS Box Selection in Action

Terrain-Aware Selection Mask

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Plugin Link

This demo is only the showcase.
Download the full plugin here:

https://github.com/cem-akkaya/MGSpatialSelection

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License

This demo project is released under the MIT License.
Commercial use is allowed as long as the copyright notice remains.

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