Game Engine

A modern C++20 game engine built with OpenGL 4.5, featuring a complete editor interface and entity component system.

Features

Core Engine

• Application Framework - Window management, input handling, event system
• Entity Component System - Built on EnTT with 9-phase system execution
• Resource Management - Async loading, caching, and hot-reload support

Rendering

• Deferred Rendering Pipeline - G-Buffer based lighting with PBR materials
• Shadow Mapping - Cascaded shadow maps (CSM) for directional lights, atlas-based spot light shadows
• Particle System - GPU compute-based particles with configurable emitters
• Post-Processing - HDR tonemapping, gamma correction

Editor

• Dockable Panels - Scene hierarchy, inspector, viewport, console, asset browser
• Transform Gizmos - Translate, rotate, scale with snapping support
• Editor Camera - Orbit, pan, zoom controls
• Play Mode - Scene state preservation and restoration

Camera System

• Multiple controller types: FPS, Third-Person, Orbital
• Smooth interpolation and configurable parameters

Requirements

• C++20 compatible compiler (GCC 11+, Clang 13+, MSVC 2022+)
• CMake 3.20+
• OpenGL 4.5 capable GPU

Building

# Clone the repository
git clone https://github.com/Perkybeet/prisvector-engine.git
cd prisvector-engine

# Configure and build (Release)
cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build --config Release

# Run the editor
./build/bin/Sandbox

Build Options

Option	Default	Description
ENGINE_BUILD_SANDBOX	ON	Build the demo application
ENGINE_BUILD_TESTS	OFF	Build unit tests
ENGINE_ENABLE_PROFILING	OFF	Enable performance profiling

Project Structure

engine/
├── core/           # Application, window, input, logging
├── ecs/            # Entity component system
├── renderer/       # OpenGL rendering, shaders, materials
├── camera/         # Camera controllers
├── editor/         # Editor panels and tools
├── events/         # Event dispatcher
├── math/           # AABB, Ray, interpolation utilities
├── resources/      # Asset loading and management
└── hotreload/      # File watching, shader hot-reload

assets/
└── shaders/        # GLSL shaders (deferred, shadows, particles, post-process)

sandbox/
└── demos/          # Demo applications

Dependencies

All dependencies are fetched automatically via CMake FetchContent:

• GLFW 3.4 - Window and input
• GLAD 2.0.6 - OpenGL loader
• GLM 1.0.1 - Mathematics
• EnTT 3.13.2 - ECS framework
• spdlog 1.14.1 - Logging
• Dear ImGui 1.91.6 - Editor UI
• ImGuizmo - Transform gizmos
• stb - Image loading

Controls

Editor Camera

• Alt + Left Mouse - Orbit around focal point
• Alt + Middle Mouse - Pan
• Alt + Right Mouse - Zoom
• Scroll Wheel - Zoom

Gizmos

• W - Translate mode
• E - Rotate mode
• R - Scale mode
• Click - Select entity

License

This project is proprietary software. See LICENSE for terms.

Author

Yago López prado @Perkybeet