Photoshop script for making a sprite sheet out of a folder of images.

PhotoshopSpriteStripMaker.js

/* FUNCS */

function move(l,x,y) {
  var Position = l.bounds;
  Position[0] = x - Position[0];
  Position[1] = y - Position[1];

  l.translate(-Position[0],-Position[1]);
}

function run() {
  var folder = Folder.selectDialog("Please select input folder");
  var files = folder.getFiles();

  app.preferences.rulerUnits = Units.PIXELS;
  app.preferences.typeUnits = TypeUnits.PIXELS;

  var cols = prompt("Columns", 10);
  var colWidth = prompt("Column width", 330);
  var rowHeight = prompt("Row height", 840);

  var numRows = Math.ceil(files.length / cols);

  var outDoc = app.documents.add(colWidth * cols, rowHeight * numRows, 72, "outdoc");

  for (var i = 0; i < files.length; i++) {
    var p = files[i];
    open(p);

    var d = activeDocument;
    d.trim();
    d.selection.selectAll();
    d.selection.copy();
    d.close(SaveOptions.DONOTSAVECHANGES);

    app.activeDocument = outDoc;

    outDoc.paste();

    var l = outDoc.activeLayer;
    var h = l.bounds[3] - l.bounds[1];

    var y = Math.floor(i / cols) * rowHeight;
    var x = i % cols * colWidth;
    var yoffset = rowHeight - parseInt(h);

    move(l, x, y + yoffset);
  }
}

/* SCRIPT */

run();