Vesper

Vesper is a lightweight 2D/3D engine and editor inspired by TheCherno's Game Engine Architecture series for the Hazel engine.
It provides a renderer, scene & entity system, editor UI, input handling, and utilities to build simple games and interactive applications in C++ (C++17).

It is generally usable as an easily modifiable base line for creating graphics and software applications.

The specific purpose is for the creation of Particle System demos, experiments, and visualizations.

It is not intended to be a full-featured game engine,

But rather an application to create a range of visual effects and particle system simulations.

Quick overview

• Language: C++17
• Platforms: Windows
  • Planned: Linux, macOS
• Third-party libraries:
  • entt (entity-component system)
  • Glad (OpenGL function loading)
  • GLFW (windowing and input)
  • glm (math library)
  • ImGui (editor UI)
  • spdlog (logging)
  • stb (image loading)
• Core features:
  • Scene / Entity / Component system
  • 2D renderer with orthographic and perspective cameras
  • ImGui-based editor layer
  • Input and event handling
  • Starter particle system and instrumentation

New Project example code

#include <Vesper.h>
#include <Vesper/Core/EntryPoint.h> // can only be included in one source file
 
#include "imgui/imgui.h"
 
class ExampleLayer : public Vesper::Layer
{
public:
    ExampleLayer()
        : Layer("ExampleLayer")
    {
    }
 
    ~ExampleLayer() override = default;
 
    // Called once when the layer is attached to the layer stack
    void OnAttach() override {}
 
    // Called once when the layer is detached from the layer stack
    void OnDetach() override {}
 
    // Called every frame with the frame time
    void OnUpdate(Vesper::Timestep ts) override {}
 
    // Render ImGui UI for this layer (optional)
    void OnImGuiRender() override {
        ImGui::Begin("Example Layer");
        ImGui::Text("Hello from ExampleLayer!");
        ImGui::End();
    }
 
    // Receive events (keyboard/mouse/window/etc.)
    void OnEvent(Vesper::Event& e) override {}
};
 
class YourAppNameHere : public Vesper::Application
{
public:
    YourAppNameHere() {
 
        PushLayer(new ExampleLayer());
    }
 
    ~YourAppNameHere() {    }
};
 
Vesper::Application* Vesper::CreateApplication() {
    return new YourAppNameHere();
}