From 34287a3724ce2c48f3fc2923f7e9a1000c80fa78 Mon Sep 17 00:00:00 2001
From: Philipp Abraham <abrahamp@informatik.uni-luebeck.de>
Date: Sun, 16 Feb 2014 23:48:51 +0100
Subject: [PATCH] draw FPS when location.hash contains 'fps'

---
 src/game.js | 10 +++++++++-
 src/main.js |  2 +-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/game.js b/src/game.js
index 66914a0..50e04ec 100644
--- a/src/game.js
+++ b/src/game.js
@@ -10,6 +10,7 @@ define(['bird', 'pipe', 'score', 'difficulty', '../lib/promise-0.1.1.min'], func
   
   var pipes = [];
   
+  var drawFps = (location.hash.indexOf('fps') !== -1);
   var flash = false;
   var showIntroScreen = true;
   var levelPassed = false;
@@ -213,7 +214,7 @@ define(['bird', 'pipe', 'score', 'difficulty', '../lib/promise-0.1.1.min'], func
     drawImage('tutorial', 200, 200, ctx);
   }
   
-  function render(ctx) {
+  function render(ctx, delta) {
     ctx.save();
     drawBG(ctx);
     ctx.translate(-~~offsetX, 0);
@@ -235,6 +236,13 @@ define(['bird', 'pipe', 'score', 'difficulty', '../lib/promise-0.1.1.min'], func
     
     if (levelPassed)
       drawNextLevelText(ctx);
+    
+    if (drawFps) {
+      var fps = ~~(1000 / delta);
+      ctx.font = "10px sans-serif";
+      ctx.fillStyle = "black";
+      ctx.fillText(fps.toString(), game.SIZE[0]-20, 10);
+    }
   }
   
   return {
diff --git a/src/main.js b/src/main.js
index b789ce7..8230c89 100644
--- a/src/main.js
+++ b/src/main.js
@@ -40,7 +40,7 @@ require([
     game.lastTickTime = time;
     
     game.tick(delta);
-    game.render(ctx);
+    game.render(ctx, delta);
 
     window.requestAnimationFrame(mainLoop);
   }