Allow pausing the software on click

AIPathFinder.pde

@@ -1,6 +1,7 @@
 PVector goal;
 Obstacles obstacles;
 Genetic AI;
+boolean pause = false;
 
 void setup(){
   size(800, 800);
@@ -18,6 +19,10 @@ void setup(){
 }
 
 void draw(){
+  if(pause) {
+    return;
+  }
+  
   background(255);
   
   //draw goal
@@ -46,5 +51,5 @@ void draw(){
 }
 
 void mouseClicked(){
-  AI.toggleDisplay();
+  pause = !pause;
 }