fix syntax

particles2d.cm

@@ -43,25 +43,31 @@ var emitters = {
   // Update an emitter and its particles
   update: function(emitter, dt) {
     // Spawn new particles
+    var pp = 0
     if (emitter.rate > 0) {
       emitter.spawn_timer = (emitter.spawn_timer || 0) + dt
-      var pp = 1 / emitter.rate
+      pp = 1 / emitter.rate
       while (emitter.spawn_timer > pp) {
         emitter.spawn_timer -= pp
         emitters.spawn(emitter)
       }
     }
-    
+
     // Update existing particles
-    for (var i = length(emitter.particles) - 1; i >= 0; i--) {
-      var p = emitter.particles[i]
+    var i = 0
+    var p = null
+    var grow_for = 0
+    var shrink_for = 0
+    var alpha = 0
+    for (i = length(emitter.particles) - 1; i >= 0; i--) {
+      p = emitter.particles[i]
       p.time += dt
       p.pos.x += p.velocity.x * dt
       p.pos.y += p.velocity.y * dt
-      
+
       // Scale animation
-      var grow_for = emitter.grow_for || 0.3
-      var shrink_for = emitter.shrink_for || 0.5
+      grow_for = emitter.grow_for || 0.3
+      shrink_for = emitter.shrink_for || 0.5
       if (p.time < grow_for) {
         p.scale = lerp(0, p.max_scale, p.time / grow_for)
       } else if (p.time > p.life - shrink_for) {
@@ -69,9 +75,9 @@ var emitters = {
       } else {
         p.scale = p.max_scale
       }
-      
+
       // Alpha fade
-      var alpha = 1
+      alpha = 1
       if (p.time > p.life * 0.7) {
         alpha = 1 - (p.time - p.life * 0.7) / (p.life * 0.3)
       }