create-game v1.0.5

create-game

The fastest way to get started writing WebGL games.

This is a small library that makes getting started with a new WebGL game quick and easy. It has one function, createGame, which takes two objects as its parameters, your callbacks and your configuration options.

All callbacks are optional, missing callbacks are simply ignored.

Most configuration options are optional, save for canvas which is necessary for create-game to know where it should acquire its WebGL context. For the other options, sensible defaults are used.

Rendering, state management, physics, networking, and any other functionality you might want are out of the scope of this library. You are free to use whichever other libraries you see fit for those purposes.

Install

npm install create-game --save

Usage

import createGame from 'create-game';

createGame({
  create: () => {
    // your asset loading and initialization code here
  },
  render: (canvas, gl) => {
    // your rendering code here
  },
  update: () => {
    // your update code here
  }
}, {
  canvas: document.getElementById('my-canvas') // use your canvas here
});

Options

The following options are available:

• canvas takes a canvas DOM element, which is used for rendering.
• renderInterval takes a number that determines how many milliseconds should pass between two invocations of the render callback. The default value is 60 frames per second.
• updateInterval takes a number that determines how many milliseconds should pass between two invocations of the update callback. The default value is 60 updates per second.

Callbacks

The following callbacks are available:

• create(gl) is called once before the loop starts. Initialize your state and load your assets here.
• render(gl) is called every renderInterval milliseconds, and is the place to do your rendering.
• update() is called every updateInterval milliseconds, and is the place to do your state updates.
• onClick(x, y) is called when the mouse is clicked.
• onKeyDown(key, keyCode) is called when a key is pressed.
• onKeyUp(key, keyCode) is called when a key is released.
• onMouseDown(x, y) is called when the mouse is pressed.
• onMouseMove(x, y) is called when the mouse is moved.
• onMouseUp(x, y) is called when the mouse is released.

• onResize(gl) is called when the window is resized.