1 files changed, 21 insertions, 0 deletions
diff --git a/new-reality/public/assets/js/grid/timeline.js b/new-reality/public/assets/js/grid/timeline.js
new file mode 100644
index 0000000..651e315
--- /dev/null
+++ b/new-reality/public/assets/js/grid/timeline.js
@@ -0,0 +1,21 @@
+function Timeline (tweens) {
+  this.tweens = tweens
+  this.index = 0
+}
+Timeline.prototype.advance = function(){
+  var tl = this.tweens[this.index % this.tweens.length]
+  if (tl.index == -1) {
+    tl.reset()
+    tl.index = 0
+    requestAnimationFrame(this.advance.bind(this))
+  }
+  else if (tl.index < tl.timeline.length){
+    tl.timeline[ tl.index ](this.advance.bind(this))
+    tl.index += 1
+  }
+  else {
+    this.index += 1
+    tl.index = -1
+    requestAnimationFrame(this.advance.bind(this))
+  }
+}