Playtesting - Fixed bugs

utils/HelperFunctions.js

@@ -0,0 +1,21 @@
+//General helper functions
+
+//Returns the size (number of keys) of an object
+function sizeOfObject(obj) {
+	var size = 0, key;
+	for (key in obj) {
+		if (obj.hasOwnProperty(key)) size++;
+	}
+	return size;
+}
+
+//Adds a random offset to a number within a certain percentage
+//e.g. addOffset(100, 5) will return anything from 95 to 105. 
+//The percentage argument must be between 0 and 100;
+function addOffset(n, percentage) {
+    if (percentage < 0 || percentage > 100) {return ;}
+    
+    var offset = n * (percentage / 100);
+    
+    return n * (Math.random() * (2 * offset) - offset);
+}