redbone

OpenGL 2D Game Engine

• Compile on windows
• Compile on mac os
• Examples
• Methods
• • Entity
• • Renderer

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Compile on windows

Install GCC Install freeglut in your GCC_PATH

Compile your project with

g++ -c -o main.o PROJECT_ENTRY_FILE.cpp -I"GCC_PATH"

g++ -o main.exe main.o -L"GCC_PATH\freeglut\lib\x64" -lfreeglut -lopengl32 -lglu32 -Wl,--subsystem,windows

Compile on mac os

Install HomeBrew

brew install gcc
brew cask install xquartz
brew install freeglut

Compile your project with

g++ -c -o main.o PROJECT_ENTRY_FILE.cpp
g++ -o main main.o -framework OpenGL -framework GLUT

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Methods

List of all available methods for all classes

Entity class

The object on the screen.

void render()

Renders an Entity inside of a Renderer class

Renderer class

Stores Entities and renders them each frame.

Entity newEntity(args)

List of args in order:

• int x - Plain x coordinate of an Entity
• int y - Plain y coordinate of an Entity
• int w - Width of an Entity
• int h - Height of an Entity
• int angle - Rotation angle in degrees of an Entity
• float r - Red level of Entity's color (0-1)
• float g - Green level of Entity's color (0-1)
• float b - Blue level of Entity's color (0-1)
• int index - Entity index. By calling Renderer.sortEntities Entities are getting sorted so they are rendered in needed order.

void sortEntities()

Sorts Entities by their index in ascending order

void render()

Renders all stored Entities calling render method on them

void run()

Runs main OpenGL loop. Required to initialize rendering.