Tiny Tiled Map Editor binary exporter plugin

jrpg.js

var binaryFormat = {
    name: "jRPG binary format",
    extension: "bin",

    write: function(map, fileName) {
        var m = {
            width: map.width,
            height: map.height,
            layers: []
        };
        
        var arr = new Uint16Array(map.width * map.height * map.layerCount + 3);
        var index = 0;
        
        arr[index++] = map.width;
        arr[index++] = map.height;
        arr[index++] = map.layerCount;

        for (var i = 0; i < map.layerCount; ++i) {
            var layer = map.layerAt(i);
            if (layer.isTileLayer) {
                for (y = 0; y < map.height; y++) {
                    for (x = 0; x < map.width; x++) {
                        var id = 0;

                        var tile = layer.tileAt(x, y);
                        if (tile !== null) {
                            id = tile.id + 1;
                        }
                        
                        arr[index++] = id;
                    }
                }
           }
        }
        
        var bin = new BinaryFile(fileName, BinaryFile.WriteOnly);
        bin.write(arr.buffer);
        bin.commit();
    },
}

tiled.registerMapFormat("jRPG", binaryFormat)