pixelbutler/build/core/SpriteSheet.js

Low-res bitmap render engine for big screens

'use strict';
var SpriteSheet = (function () {
    function SpriteSheet(width, height) {
        this.sprites = [];
        this.width = width;
        this.height = height;
    }
    SpriteSheet.prototype.getSprite = function (x, y) {
        return this.getSpriteAt(y * this.width + x);
    };
    SpriteSheet.prototype.getSpriteAt = function (index) {
        if (this.sprites.length === 0) {
            throw new Error('sheet has zero images');
        }
        return this.sprites[index % this.sprites.length];
    };
    SpriteSheet.prototype.addSprite = function (bitmap) {
        this.sprites.push(bitmap);
    };
    return SpriteSheet;
})();
module.exports = SpriteSheet;