Examples - Unify Loops

lib/src/01-WhileLoop.dart

@@ -12,20 +12,31 @@ import 'package:browserloop/game/LoopExample.dart';
 /// with Timer.periodic(16, callbackFunction);
 /// To see how I got it running for the example,
 /// see file 02-AnimationFrameWhile.dart
-class WhileLoop implements LoopExample {
+class SimpleLoop implements LoopExample {
   Game game;
+  bool running = false;
 
-  WhileLoop(Game this.game) {
+  SimpleLoop(Game this.game) {
     eventloop();
   }
 
   void eventloop() {
     while (true) {
-      game.update();
+      update();
     }
   }
 
   void update() {
-    print("i am updating");
+    game.update();
+    game.draw();
+  }
+
+  // Starting and stopping the loop for the example page
+  void stop() {
+    running = false;
+  }
+
+  void start() {
+    running = true;
   }
 }

lib/src/03-VariableTimestep.dart

@@ -25,8 +25,6 @@ class VariableTimestep implements LoopExample {
   Stopwatch elapsed = new Stopwatch();
 
   VariableTimestep(Game this.game) {
-    elapsed.start();
-    window.requestAnimationFrame(eventloop);
   }
 
   void eventloop(num time) {
@@ -38,11 +36,15 @@ class VariableTimestep implements LoopExample {
     id = window.requestAnimationFrame(eventloop);
   }
 
+  // Starting and stopping the loop for the example page
   void stop() {
+    elapsed.stop();
     window.cancelAnimationFrame(id);
   }
 
   void start() {
+    elapsed.start();
+    elapsed.reset();
     window.requestAnimationFrame(eventloop);
   }
 }

lib/src/04-FixedLoopVariableRender.dart

@@ -12,7 +12,6 @@ class FixedLoopVariableRender implements LoopExample {
   num id;
 
   FixedLoopVariableRender(this.game) {
-
      elapsed.start();
      window.requestAnimationFrame(eventloop);
   }
@@ -31,22 +30,22 @@ class FixedLoopVariableRender implements LoopExample {
   }
 
   void update() {
-    print('updating');
     game.update();
-    return;
   }
 
   void render(double interp) {
-    print('rendering, interp:$interp');
     game.draw(interp);
-    return;
   }
 
+  // Starting and stopping the loop for the example page
   void stop() {
+    elapsed.stop();
     window.cancelAnimationFrame(id);
   }
 
   void start() {
+    elapsed.start();
+    elapsed.reset();
     window.requestAnimationFrame(eventloop);
   }
 }