WESA - WebGL-based Engine of Sprite Animation

Perhaps the simplest and lightest (14KB, currently) solution for turning your brilliant idea into old-school style, pixel-friendly sprite animations being displayed on the web.

You may consider to use fancy libs such as PixiJS or even ThreeJS, but WESA would be your simple but elegant start to learn to animate your favorite sprites in browser.

WesaJS will always be fully open-sourced, for the sake of my personal passion on sprite animations and retro-style games.

Basic Example

Include WESA

<script src="./js/wesa.min.js"></script>

Prepare a Canvas

<canvas id="canvas" width="640" height="480"></canvas>

Write Scripts

// Initializing WESA
wesa.core.init(document.getElementById('canvas'));
// Adding sprite sheets
wesa.assets.source.spriteSheetUrlArray.push('./assets/texture/megaman.png');
// Adding object definition file
wesa.assets.source.objectJsonUrl = './assets/megaman.json';
wesa.assets.load(function () {
    // Create the scene
    let scene = new wesa.Scene('Scene');
    // Add a sprite
    scene.addSpriteToLayer(0, new wesa.Sprite({
        object: wesa.assets.objectList[0],
        action: 0,
        team: 0,
        position: { x: 0, y: 0 },
        scale: 4
    }));
    // Run the scene
    let animate = function () {
        requestAnimationFrame(animate);
        scene.update();
        scene.render();
    }
    animate();
});

See full demo

More Demos

• Coming soon!

Gallery

• OpenCity

History

WesaJS is a successor of my following college works:

• aero-engine-3d: C++ & DirectX;
• aero-engine-opengl: C++ & OpenGL.

To-do

• Pausing

License

MIT