🚀 UE 5.4+ Compatible🧩 Modular Architecture

Grid Placement System

A robust framework for creating building and placement mechanics in Unreal Engine projects

Video Preview & Playable Demo Download

Watch the interactive gameplay demonstration

Overview

The Grid Placement System provides a robust framework for creating building and placement mechanics in Unreal Engine projects.

Key Features

🎯

Grid-based Placement

Snap objects to customizable grids with precision and intelligent alignment

🔍

Surface Detection

Advanced surface detection and validation with normal calculations

⌨️

Input Management

Complete input handling system with customizable key bindings

🎨

UI Integration

Beautiful, ready-to-use widget system with modern design

🧩

Flexible Architecture

Modular design for easy customization and extensibility

⚡

Performance Optimized

Efficient algorithms and optimized rendering for smooth gameplay

Architecture

The system is built around several core components that work together seamlessly:

Core System

PlacementHelper: Main Placement Orchestrator - coordinates all placement operations
PlacementObjectRegistry: Manages placeable objects with efficient lookup and caching
PlacementSystemComponent: Manages All Placement Logic with state management
DirectionalArrowComponent: For visualizing direction in Placeable Object Actors
PlaceableObjectInterface: Universal interface for all placeable objects

Internal Library Components

GridSnapper: Handles precise grid snapping logic with customizable grid sizes
InputHandler: Comprehensive user input management with action mapping
ObjectManager: Advanced object lifecycle management and pooling
PlacementCameraController: Smooth camera control during placement operations
PlacementValidator: Robust validation system for placement rules and constraints
SoundManager: Audio feedback system with spatial audio support
SurfaceManager: Intelligent surface detection with multiple detection methods

Widgets

Modern UI elements designed for optimal user experience:

WBP_PlaceableObjectsListWidget: Responsive container for placeable items with search and filtering
WBP_PlaceableItemWidget: Individual item component with preview and metadata
WBP_Control: Interactive overlay for tutorials, controls bindings

Plugin Tree (What is included?)

📁 Plugin Structure

📁GridPlacementSystem/
├── 📁Config
├── 📁Content
│   └── 📁GPS_Core
│       ├── 📁Audio
│       │   ├── 🎮SFX_GPS_Place.uasset
│       │   ├── 🎮SFX_GPS_Rotate.uasset
│       │   └── 🎮SFX_GPS_Snap.uasset
│       ├── 📁Core
│       │   ├── 📁Input
│       │   │   ├── 🎮IA_DeleteObject.uasset
│       │   │   ├── 🎮IA_PlacementCancel.uasset
│       │   │   ├── 🎮IA_PlacementConfirm.uasset
│       │   │   ├── 🎮IA_PlacementMove.uasset
│       │   │   ├── 🎮IA_PlacementRotate.uasset
│       │   │   ├── 🎮IA_PlacementShift.uasset
│       │   │   ├── 🎮IA_PlacementToggle.uasset
│       │   │   ├── 🎮IA_PlacementVertical.uasset
│       │   │   ├── 🎮IA_PlacementZoom.uasset
│       │   │   ├── 🎮IA_SelectObject.uasset
│       │   │   ├── 🎮IMC_PlacementMode.uasset
│       │   │   └── 🎮IMC_PlacementToggle.uasset
│       │   ├── 📁Material
│       │   │   ├── 🎮MF_GPS_ProcGrid.uasset
│       │   │   ├── 🎮MF_ProcGrid.uasset
│       │   │   ├── 🎮M_GPS_Grid.uasset
│       │   │   ├── 🎮M_GPS_Overlay.uasset
│       │   │   ├── 🎮M_GPS_SelectedOutline.uasset
│       │   │   ├── 🎮ProcGrid.uasset
│       │   │   ├── 🎮T_CircleChecker.uasset
│       │   │   ├── 🎮T_NormalGrid.uasset
│       │   │   └── 🎮T_PlusGrid.uasset
│       │   └── 📁Mesh
│       │       └── 🎮SM_GPS_Arrow.uasset
│       ├── 📁Demo
│       │   ├── 📁Character
│       │   │   └── 🎮UEM_CharacterSetup.uasset
│       │   └── 📁Maps
│       │       └── 🗺️GPS_DemoLevels.umap
│       ├── 📁Level
│       │   ├── 📁Material
│       │   │   ├── 🎮SomeMaterial.uasset
│       │   └── 📁Mesh
│       │       ├── 🎮Floor_400x400.uasset
│       │       ├── 🎮RoofMesh.uasset
│       │       ├── 🎮Roof_400x400.uasset
│       │       ├── 🎮Wall_400x200.uasset
│       │       └── 🎮Wall_Door_400x300.uasset
│       ├── 📁PlaceableActor
│       │   ├── 📁Floor
│       │   │   ├── 📁Cabinet
│       │   │   │   ├── 🎮A_BigCabinet.uasset
│       │   │   │   ├── 🎮A_ModernWoodenCabinet.uasset
│       │   │   │   ├── 🎮A_PaintedWoodenCabinet.uasset
│       │   │   │   ├── 📁Material
│       │   │   │   │   ├── 🎮SomeMaterial.uasset
│       │   │   │   └── 📁Mesh
│       │   │   │       ├── 🎮SM_Cabinet.uasset
│       │   │   │       ├── 🎮SM_ModernWoodenCabinet.uasset
│       │   │   │       ├── 🎮SM_PaintedWoodenCabinet.uasset
│       │   │   │       ├── 🎮SomeMesh.uasset
│       │   │   ├── 📁Chair
│       │   │   │   ├── 🎮A_ModernArmChair.uasset
│       │   │   │   ├── 🎮A_PlasticChair.uasset
│       │   │   │   ├── 📁Material
│       │   │   │   │   ├── 🎮SomeMaterial.uasset
│       │   │   │   └── 📁Mesh
│       │   │   │       ├── 🎮SM_ModernArmChair.uasset
│       │   │   │       └── 🎮SM_PlasticChair.uasset
│       │   │   └── 📁Table
│       │   │       ├── 🎮A_RoundWoodenTable.uasset
│       │   │       ├── 📁Material
│       │   │       │   ├── 🎮SomeMaterial.uasset
│       │   │       └── 📁Mesh
│       │   │           └── 🎮SM_RoundWoodenTable.uasset
│       │   ├── 📁Roof
│       │   │   ├── 📁CeilingFan
│       │   │   │   ├── 🎮A_CeilingFan.uasset
│       │   │   │   ├── 📁Material
│       │   │   │   │   ├── 🎮SomeMaterial.uasset
│       │   │   │   └── 📁Mesh
│       │   │   │       └── 🎮SM_CeilingFan.uasset
│       │   │   └── 📁Chandelier
│       │   │       ├── 🎮A_Chandelier.uasset
│       │   │       ├── 🎮A_Chandelier_1.uasset
│       │   │       ├── 📁Material
│       │   │       │   ├── 🎮SomeMaterial.uasset
│       │   │       └── 📁Mesh
│       │   │           ├── 🎮SM_Chandelier.uasset
│       │   │           └── 🎮SM_Chandelier_1.uasset
│       │   └── 📁Wall
│       │       ├── 📁Dartboard
│       │       │   ├── 🎮A_Dartboard.uasset
│       │       │   ├── 📁Material
│       │       │   │   ├── 🎮SomeMaterial.uasset
│       │       │   └── 📁Mesh
│       │       │       └── 🎮SM_Dartboard.uasset
│       │       ├── 📁Lamp
│       │       │   ├── 🎮A_WallLamp.uasset
│       │       │   ├── 📁Material
│       │       │   │   ├── 🎮SomeMaterial.uasset
│       │       │   └── 📁Mesh
│       │       │       └── 🎮SM_WallLamp.uasset
│       │       └── 📁Picture
│       │           ├── 🎮A_Picture.uasset
│       │           ├── 📁Material
│       │           │   ├── 🎮SomeMaterial.uasset
│       │           └── 📁Mesh
│       │               └── 🎮SM_Picture.uasset
│       └── 📁UI
│           ├── 📁Built-in
│           │   ├── 📁Material
│           │   │   ├── 🎮M_GPS_Border.uasset
│           │   │   ├── 🎮M_GPS_Border_Controls.uasset
│           │   │   └── 🎮M_GPS_Border_ItemList.uasset
│           │   └── 📁Widget
│           │       ├── 🎮WBP_Control.uasset
│           │       ├── 🎮WBP_PlaceableItemWidget.uasset
│           │       └── 🎮WBP_PlaceableObjectsListWidget.uasset
│           ├── 📁Icon
│           │   ├── 🎮SomeIcon.uasset
│           │   └── 🎮GPS_Default.uasset
│           └── 📁Simple
│               ├── 🎮WBP_MinimalMenu.uasset
│               └── 🎮WBP_MinimalObjectList.uasset
├── 🔌GridPlacementSystem.uplugin
├── 📁Resources
│   └── 🖼️Icon128.png
└── 📁Source
    ├── 📁GridPlacementSystem
    │   ├── 💻GridPlacementSystem.Build.cs
    │   ├── 📁Private
    │   │   ├── 📁Core
    │   │   │   ├── 📄DirectionalArrowComponent.cpp
    │   │   │   ├── 📁Library
    │   │   │   │   ├── 📄GridSnapper.cpp
    │   │   │   │   ├── 📄InputHandler.cpp
    │   │   │   │   ├── 📄ObjectManager.cpp
    │   │   │   │   ├── 📄PlacementCameraController.cpp
    │   │   │   │   ├── 📄PlacementValidator.cpp
    │   │   │   │   ├── 📄SoundManager.cpp
    │   │   │   │   └── 📄SurfaceManager.cpp
    │   │   │   ├── 📄PlacementHelper.cpp
    │   │   │   ├── 📄PlacementObjectRegistry.cpp
    │   │   │   └── 📄PlacementSystemComponent.cpp
    │   │   ├── 📄GridPlacementSystem.cpp
    │   │   └── 📁Interface
    │   │       └── 📄PlaceableObjectInterface.cpp
    │   └── 📁Public
    │       ├── 📁Components
    │       │   └── 📄DirectionalArrowComponent.h
    │       ├── 📁Core
    │       │   ├── 📁Library
    │       │   │   ├── 📄GridSnapper.h
    │       │   │   ├── 📄InputHandler.h
    │       │   │   ├── 📄ObjectManager.h
    │       │   │   ├── 📄PlacementCameraController.h
    │       │   │   ├── 📄PlacementValidator.h
    │       │   │   ├── 📄SoundManager.h
    │       │   │   └── 📄SurfaceManager.h
    │       │   ├── 📄PlacementHelper.h
    │       │   ├── 📄PlacementObjectRegistry.h
    │       │   └── 📄PlacementSystemComponent.h
    │       ├── 📄GridPlacementSystem.h
    │       └── 📁Interface
    │           └── 📄PlaceableObjectInterface.h
    └── 📁GridPlacementSystemEditor
        ├── 💻GridPlacementSystemEditor.Build.cs
        ├── 📁Private
        │   └── 📄GridPlacementSystemEditor.cpp
        └── 📁Public
            └── 📄GridPlacementSystemEditor.h

📁 Folders: Blueprints & Assets📄 C++: Source Files🎮 UAssets: Unreal Assets💻 Build: Configuration

Introduction Getting Started