GoHomeEngine

GoHomeEngine

A Game Engine for 2D/3D Games written in go

Features

• Multiple Platform support: Windows, Linux, Mac, Android, Browser
• Loading Shaders
• Dynamic Shader Generation
• Multiple Viewports/Cameras
• Tweens
• Audio (.wav and .mp3)
• GUI with GTK
• Simple OnScreen GUI
• Instancing

• Rendering 3D Models
• Camera
• Loading 3D Models (.obj)
• Materials
• SpecularMaps
• NormalMaps
• PointLights
• DirectionalLights
• SpotLights
• Shadows of DirectionalLight and SpotLight
• Ray Casting
• Level Editor (in development)

• Rendering 2D Sprites
• Camera (Translating, Rotating and Zooming)
• Sprite Animation
• Rendering 2D Shapes (Point,Line,Rectangle,Polygon, etc.)
• Physics
• TiledMaps

Platforms

Dependencies

• mathgl (Forked from here)(License)
• tga (License)
• go-openal (Forked from here) (License)
• go-wav (Forked from here) (License)
• go-mp3 (License)
• box2d (License)
• tmx (Forked from here) (License)
• glfw (License)
• gtk (License)
• go-sdl2 (Forked from here) (License)
• gopherjs (License)
• go-gl/gl (License)
• android-go (Forked from here) (License)
• webgl (Forked from here) (License)

Installation

1. Install the c-Dependencies:
   

	// For Desktop (Most of them should already be installed)
	sudo apt-get install libx11-dev libxrandr-dev libxcursor-dev libxinerama-dev libpthread-stubs0-dev zlib1g-dev libgl1-mesa-dev libxi-dev
	// For GTK
	sudo apt-get install libgtk-3-dev
	// On Windows use msys and execute one of the following commands
	pacman -S mingw-w64-x86_64-gtk3 // for 64-Bit
	pacman -S mingw-w64-i686-gtk3   // for 32-Bit
	// For SDL2
	sudo apt-get install libsdl2-dev
	// On Windows use msys and execute one of the following commands
	pacman -S mingw-w64-x86_64-sdl2 // for 64-Bit
	pacman -S mingw-w64-i686-sdl2   // for 32-Bit

1. Install the go-Dependencies:
   

    // Desktop
	// Default (GLFW,OpenGL) if you only want to build desktop applications only execute this command
	go get -u github.com/PucklaJ/mathgl/mgl32 github.com/PucklaJ/tmx github.com/ByteArena/box2d github.com/PucklaJ/GLSLGenerator github.com/go-gl/glfw/v3.2 github.com/PucklaJ/go-openal/openal github.com/PucklaJ/go-wav github.com/hajimehoshi/go-mp3 github.com/go-gl/gl/all-core/gl

	// Use some of the following commands to build for a different platform or if you want to use
	// a different Framework or Renderer

	// Always Needed
	go get -u github.com/PucklaJ/mathgl/mgl32 github.com/PucklaJ/tmx github.com/ByteArena/box2d github.com/PucklaJ/GLSLGenerator

	// For GLFW
	go get -u github.com/go-gl/glfw/v3.2 github.com/PucklaJ/go-openal/openal github.com/PucklaJ/go-wav github.com/hajimehoshi/go-mp3

	// For SDL2
	go get -u github.com/PucklaJ/go-sdl2/sdl github.com/PucklaJ/go-openal/openal github.com/PucklaJ/go-wav github.com/hajimehoshi/go-mp3

	// For GTK
	go get -u github.com/PucklaJ/go-openal/openal github.com/PucklaJ/go-wav github.com/hajimehoshi/go-mp3

	// For OpenGL
	go get -u github.com/go-gl/gl/all-core/gl

	// Browser
	go get -u github.com/gopherjs/gopherjs github.com/PucklaJ/webgl

	// Android
	go get -u github.com/PucklaJ/go-sdl2/sdl github.com/PucklaJ/android-go/gles2

	// For OpenGLES2
	go get -u github.com/PucklaJ/android-go/gles2

	// For OpenGLES3
	go get -u github.com/PucklaJ/android-go/gles3

	// For OpenGLES31
	go get -u github.com/PucklaJ/android-go/gles31

1. Compile one of the examples to test:
   

	cd $GOPATH/src/github.com/PucklaJ/GoHomeEngine/src/examples/basic
	go build && ./basic
	// You should see a gopher in the middle

Optional: Install libraries for audio on android

    // If you want to use audio on android you first have to install SDL_mixer with mp3 and ogg support
	// This guide is only for linux ubuntu and debian. For other platforms it should be similiar or the
	// default precompiled binaries already include mp3 and ogg support.

	// go to some directory where you want to store the respositories
	cd $GIT_HOME
	// clone and install mpg123
	git clone https://github.com/kepstin/mpg123.git
	cd mpg123
	./configure
	make -j4
	sudo make install
	cd ..
	// install libvorbis
	sudo apt-get install libvorbis-dev
	// clone and install SDL_mixer
	git clone https://github.com/SDL-mirror/SDL_mixer.git
	cd SDL_mixer
	./configure --enable-music-mp3 --enable-music-ogg
	make -j4
	sudo make install
	// Now you are ready to use audio on android

Tutorial

The following code describes what is needed to write a game with GoHome

package main

import (
	"github.com/PucklaJ/GoHomeEngine/src/frameworks/GLFW"
	"github.com/PucklaJ/GoHomeEngine/src/gohome"
	"github.com/PucklaJ/GoHomeEngine/src/renderers/OpenGL"
)

type StartScene struct {

}

func (*StartScene) Init() {

}

func (*StartScene) Update(delta_time float32) {

}

func (*StartScene) Terminate() {

}

func main() {
	gohome.MainLop.Run(&framework.GLFWFramework{},&renderer.OpenGLRenderer{},1280,720,"Example",&StartScene{})
}

This program opens a window with a black background. To learn more you can look at the examples in src/examples

Build tool

There is a build tool available with which you can build your games easily for different platforms Read more here.