fix syntax

examples/snake/main.ce

@@ -13,7 +13,7 @@ var cellSize = 20
 var gridW = floor(config.width / cellSize)
 var gridH = floor(config.height / cellSize)
 
-var snake, direction, nextDirection, apple
+var snake = null, direction = null, nextDirection = null, apple = null
 var moveInterval = 0.1
 var moveTimer = 0
 var gameState = "playing"
@@ -36,7 +36,8 @@ function resetGame() {
 function spawnApple() {
   apple = {x:floor(random.random()*gridW), y:floor(random.random()*gridH)}
   // Re-spawn if apple lands on snake
-  for (var i=0; i<length(snake); i++)
+  var i = 0;
+  for (i=0; i<length(snake); i++)
     if (snake[i].x == apple.x && snake[i].y == apple.y) { spawnApple(); return }
 }
 
@@ -63,7 +64,8 @@ this.update = function(dt) {
   wrap(head)
 
   // Check collision with body
-  for (var i=0; i<length(snake); i++) {
+  var i = 0;
+  for (i=0; i<length(snake); i++) {
     if (snake[i].x == head.x && snake[i].y == head.y) {
       gameState = "gameover"
       return
@@ -81,10 +83,13 @@ this.update = function(dt) {
 this.hud = function() {
   // Optional clear screen
   draw.rectangle({x:0, y:0, width:config.width, height:config.height}, [0,0,0,1])
-  
+
   // Draw snake
-  for (var i=0; i<length(snake); i++) {
-    var s = snake[i]
+  var i = 0;
+  var s = null;
+  var msg = null;
+  for (i=0; i<length(snake); i++) {
+    s = snake[i]
     draw.rectangle({x:s.x*cellSize, y:s.y*cellSize, width:cellSize, height:cellSize}, color.green)
   }
 
@@ -92,7 +97,7 @@ this.hud = function() {
   draw.rectangle({x:apple.x*cellSize, y:apple.y*cellSize, width:cellSize, height:cellSize}, color.red)
 
   if (gameState == "gameover") {
-    var msg = "GAME OVER! Press SPACE to restart."
+    msg = "GAME OVER! Press SPACE to restart."
     draw.text(msg, {x:0, y:config.height*0.5-10, width:config.width, height:20}, null, 0, color.white)
   }
 }