Refactored Netscript with Acorns parser. Major rebalancing. Add TIX API. Add round(), purchaseServer().

src/NetscriptEnvironment.js

@@ -48,7 +48,20 @@ Environment.prototype = {
         }
         return (scope || this).vars[name] = value;
     },
-	
+    
+    setArrayElement: function(name, idx, value) {
+        var scope = this.lookup(name);
+        if (!scope && this.parent) {
+            console.log("Here");
+            throw new Error("Undefined variable " + name);
+        }
+        var arr = (scope || this).vars[name];
+        if (!(arr.constructor === Array || arr instanceof Array)) {
+            throw new Error("Variable is not an array: " + name);
+        }
+        return (scope || this).vars[name][idx] = value;
+    },
+    
 	//Creates (or overwrites) a variable in the current scope
     def: function(name, value) {
         return this.vars[name] = value;