adding 502 error

games/pacman502/js/utils.js

@@ -0,0 +1,48 @@
+var loadJSON = function (path, success, error)
+{
+    var oReq = new XMLHttpRequest();
+    oReq.onload = function reqListener () {
+      jsonData = JSON.parse(this.responseText);
+      //console.log("Loading JSON data", jsonData);
+      success(jsonData);
+    };;
+    oReq.open("get", path, true);
+    oReq.send();
+}
+
+var p = function(x,y){   return {x: x, y: y};  }
+
+var loadImagePixels = function(image, callback){
+
+  var img = new Image();
+  img.src = image;
+  img.onload = function() {
+    console.log("Image " + image + " loaded " + img.width + "x" +img.height);
+      var canvas = document.createElement('canvas');
+      document.body.appendChild(canvas);
+
+     var ctx = canvas.getContext('2d');
+     canvas.width  = img.width;
+     canvas.height = img.height;
+     ctx.drawImage(img, 0, 0);
+     img.style.display = 'none';
+     var imgData = ctx.getImageData(0,0,canvas.width, canvas.height);
+
+     var pixels = [];
+     for(i=0;i<img.width;i++){
+      pixels[i] = [];
+       for(j=0;j<img.height;j++){
+          var pixel = ctx.getImageData(i, j, 1, 1).data;
+          pixels[i][j] = {r: pixel[0], g: pixel[1], b: pixel[2], a: pixel[3]};
+          //console.log("Pixel ", pixel);
+        }
+     }
+
+     canvas.remove();
+     callback(pixels);
+  };
+
+}
+var randomBetween = function(f, to){
+  return Math.floor(Math.random() * (to + 1)) + f;
+}