UE 5.4+ CompatibleModular

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

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