PS_Spritesheeter

// ICY_Spritesheeter
// Arranged by IceDragon
// Code from various locations
// Last Modified : 04/20/2011

var title = "Spritesheeter";
var modetitle = "SpriteMode";
// Set up UI.
var dlg = new Window('dialog', title, [100,100,380,240]);
dlg.scTxt = dlg.add('statictext',[10,17,60,35],"Cells X >");
dlg.CellX = dlg.add('edittext',[65,15,95,35],'4');

dlg.scTxt = dlg.add('statictext',[100,17,150,35],"Cells Y ^");
dlg.CellY = dlg.add('edittext',[155,15,185,35],'2');

dlg.okayBtn = dlg.add('button', [200,14,260,38],'Start!', {name:'ok'});
var okayset = false
dlg.okayBtn.onClick = function() { okayset = true ; dlg.close() ; }

dlg.CellAssem = dlg.add('checkbox', [10,60,176,80],"Assemble Spritesheet");
dlg.CellBreak = dlg.add('checkbox',[10,80,176,100],"Disasemble Spritesheet");

dlg.show();
var assemble  =  dlg.CellAssem.value;
var breakdown = dlg.CellBreak.value;
var workDoc   = activeDocument ;

if (okayset == true) {

//Spritesheet to layers
if (breakdown == 1) {

var cellintx = parseInt(dlg.CellX.text);
var cellinty = parseInt(dlg.CellY.text);
var nextrow = parseInt(dlg.CellX.text);
var cellsizew = workDoc.width/cellintx;
var cellsizeh =workDoc.height/cellinty;


// Make Duplicate layers because Photoshop doesn't have paste over function.LOL
var dups = cellintx * cellinty;
for(var i = 1; i < dups; i++)
{
workDoc.artLayers[0].duplicate();
};

// Rename layers
var lyrCount = workDoc.layers.length
for(var i = lyrCount-1; i>=0;i--)
{
workDoc.artLayers[i].name = 'Frame '+(lyrCount-i-1);
};

// Begin shifting the layers working from the top layer down. It moves the images so that the lower left cell becomes the top layer
// and the upper left cell becomes the bottom layer (frame 0). The outer loop determins the row and the inner loop determins the column
var cellmovex = cellintx -1;
var cellmovey = cellinty -1;
var columncount =0;
var columnshift = -cellsizew*cellmovex;
var rowshift = -cellsizeh*cellmovey;
for(var i=0; i<=cellinty-1; i++)
{
for(var subi =columncount ; subi <=nextrow-1; subi++)
{
workDoc.artLayers[subi].translate(columnshift, rowshift);
columnshift = columnshift + cellsizew;
};

columncount += cellintx;
nextrow += cellintx;
columnshift = -cellsizew*cellmovex;
rowshift = rowshift +cellsizeh;
};

// Crop final image once all the layers are in place.
workDoc.crop (new Array(0,0,cellsizew,cellsizeh));

}

if (assemble == 1) {

//Layers to SpriteSheet
var cellintx = parseInt(dlg.CellX.text);
var nextrow = parseInt(dlg.CellX.text);
var cellsizew = workDoc.width/cellintx;
    // Arrange layers into a sprite sheet.

    if (documents.length > 0)
    {
        var cols = cellintx;

        // --------------------------
        docRef = workDoc;
        var activeLayer = docRef.activeLayer;

        numLayers = docRef.artLayers.length;

        var rows = Math.ceil(numLayers/cols);

         var spriteX = docRef.width;
         var spriteY = docRef.height;

        // put things in order
        app.preferences.rulerUnits = Units.PIXELS;

        // resize the canvas
         newX = spriteX * cols;
         newY = spriteY * rows;

         docRef.resizeCanvas( newX, newY, AnchorPosition.TOPLEFT );

        // move the layers around
         var rowi = 0;
         var coli = 0;

         for (i=(numLayers - 1); i >= 0; i--)
         {
             docRef.artLayers[i].visible = 1;

              var movX = spriteX*coli;
              var movY = spriteY*rowi;

             docRef.artLayers[i].translate(movX, movY);

             coli++;
             if (coli > (cols - 1))
             {
                 rowi++;
                 coli = 0;
             }
         }
    }
  }

  } // If Okay was pressed