AE ENHANCERS

/*

   QUICK LOOP—
   ADDS A TIMEREMAP TO THE SELECTED LAYERS, APPLIES
   A LOOPOUT() AND MAKES SURE IT LOOPS WITHOUT A
   BLANK KEYFRAME AT THE END OF EACH LOOP.
   FRAMERATE INDEPENDENT.

   WRITTEN BY REMCO JANSSEN / KLUSTRE
   KLUSTRE.NL / OCTOBER 2012
   
   REQUESTED BY TOM SCHROOTEN

*/


function quickLoop(thisObj) {
   
   var quickLoopData = new Object();
   
   quickLoopData.scriptVersion = "1.0";
   quickLoopData.scriptName    = "Quick Loop";
   quickLoopData.fullName      = quickLoopData.scriptName + " " + quickLoopData.scriptVersion;
   
   quickLoopData.strUndoGroup  = "Quick Loop";
   
   quickLoopData.strExpression = "loopOut(\"cycle\");";
   quickLoopData.strApplied    = ": applied " + quickLoopData.scriptName;
   quickLoopData.strSkip       = ": skipped. Couldn't enable Time Remap.";
   quickLoopData.strDone       = [quickLoopData.scriptName + "ing Done!\nSuccessfully Quick Looped ", " layer(s).", "\n\nIt skipped ", " layer(s), because Time Remap couldn't be enabled."];
   
   quickLoopData.errNoLayer    = "Invalid Selection\nPlease select at least one layer.";
   quickLoopData.errVersion    = "Untested Version\nThis script was tested on CS5 and CS6 only. Errors may occur.";
   

   if (parseFloat(app.version) < 10.0){
      alert(quickLoopData.errVersion);
   }

   if (!app.project || !(app.project.activeItem instanceof CompItem) || app.project.activeItem.selectedLayers == null || app.project.activeItem.selectedLayers < 1) {
      alert (quickLoopData.errNoLayer);
   }else{

      var loopComp          = app.project.activeItem;
      var loopLayers        = loopComp.selectedLayers;
      var loopKey;
      var loopAppliedLayers = new Array();
      var loopSkippedLayers = new Array();
      var loopFrame         = loopComp.frameDuration;
      
      app.beginUndoGroup(quickLoopData.strUndoGroup);   
      
      for (var i=0; i < loopLayers.length; i++) {
         if(loopLayers[i].canSetTimeRemapEnabled == true){
            loopLayers[i].timeRemapEnabled = true;
            loopLayers[i].timeRemap.expression = quickLoopData.strExpression;
            loopKey = loopLayers[i].timeRemap.keyTime(2);
            loopLayers[i].timeRemap.addKey(loopKey-loopFrame);
            loopLayers[i].timeRemap.removeKey(3);
            writeLn(loopLayers[i].name + quickLoopData.strApplied);
            loopAppliedLayers.push(loopLayers[i].name);            
         }else{
            writeLn(loopLayers[i].name + quickLoopData.strSkip);
            loopSkippedLayers.push(loopLayers[i].name);
            continue;
         }
      }
   
      app.endUndoGroup();
      
      if (loopSkippedLayers.length > 0){
         alert(quickLoopData.strDone[0] + loopAppliedLayers.length + quickLoopData.strDone[1] + quickLoopData.strDone[2] + loopSkippedLayers.length + quickLoopData.strDone[3]);
      }else{
         alert(quickLoopData.strDone[0] + loopAppliedLayers.length + quickLoopData.strDone[1]);
      }
   }
}

quickLoop();