Exports photoshop layers as individual sprites, by Tuba

exportSprites.js

/*Maximum spriteSheet width -> FIXED*/
var maxWidth = 256;


var filename = activeDocument.name.replace(".psd","");
var file = new File(activeDocument.fullName.path+"/"+filename+".xml");
var AD = activeDocument;
var output = new File(activeDocument.fullName.path+"/"+filename+".png");
var pngOptions = new PNGSaveOptions();

/*Global control variables*/
var finalWidth = maxWidth;
var finalHeight = 0;

var nextWidth = 0;
var nextHeight = 0;


function getSpriteFromLayer(layer)
{
	if (layer.typename == "LayerSet") //Layer is a Folder
	{
		for (var i=0; i < layer.artLayers.length; i++)
		{
			layer.artLayers[i].visible = true;
			getSpriteFromLayer(layer.artLayers[i]);
		}
	}
	else
	{
		var spriteWidth = layer.bounds[2].value - layer.bounds[0].value;
		var spriteHeight = layer.bounds[3].value - layer.bounds[1].value;
		
		if (nextWidth + spriteWidth > maxWidth)
		{ //maximum width achieved, start a new row
			nextWidth = 0;
			nextHeight = finalHeight;
			
			layer.translate(nextWidth -  layer.bounds[0].value,nextHeight -  layer.bounds[1].value);
		}
		else
		{
			layer.translate(nextWidth -  layer.bounds[0].value ,nextHeight -  layer.bounds[1].value);
		}
		
        if (nextHeight + spriteHeight > finalHeight)
            finalHeight = nextHeight + spriteHeight;
        
        //write the sprite data
		file.writeln("<sprite>");
		file.writeln("<name>"+layer.name+"</name>");
		file.writeln("<x>"+(layer.bounds[0].value)+"</x>");
		file.writeln("<y>"+(layer.bounds[1].value)+"</y>");
		file.writeln("<width>"+spriteWidth+"</width>");
		file.writeln("<height>"+spriteHeight+"</height>");
		file.writeln("</sprite>");
		
		nextWidth += spriteWidth + 1;
	}
}


preferences.rulerUnits = Units.PIXELS; 


pngOptions.formatOptions = FormatOptions.STANDARDBASELINE;

file.open("w");

file.writeln("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
file.writeln("<spritesheet>");
file.writeln("<sheetfile>"+filename+".png</sheetfile>");


for (var i=0; i < AD.layers.length; i++)
{
	AD.layers[i].visible = true; //Make sure that the layer is visible
	getSpriteFromLayer(AD.layers[i]);
}

file.writeln("</spritesheet>");

file.close();

AD.resizeCanvas(finalWidth, finalHeight, AnchorPosition.TOPLEFT);

AD.saveAs(output ,pngOptions ,true, Extension.LOWERCASE);