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Merge pull request #947 from hashicorp/fix-chainable-timer

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Attach Chainable timers to Engine render loop
This commit is contained in:
Jack Pearkes 2015-02-06 15:47:20 -08:00
commit db9f98a752
2 changed files with 35 additions and 7 deletions
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12
website/source/assets/javascripts/app/Engine.js
View File

@ -68,7 +68,10 @@ Engine = Base.extend({
this.background.className += ' show';
this.canvas.style.opacity = 1;
new Chainable()
// We have to pass the engine into Chainable to
// enable the timers to properly attach to the
// run/render loop
new Chainable(this)
.wait(1000)
.then(function(){
this.starGeneratorRate = 200;
@ -202,6 +205,13 @@ Engine = Base.extend({
this.now = Date.now() / 1000;
this.tick = Math.min(this.now - this.last, 0.017);
// We must attach the chainable timer to the engine
// run/render loop or else things can get pretty
// out of wack
if (this.updateChainTimer) {
this.updateChainTimer(this.tick);
}
// Update all particles... may need to be optimized
for (p = 0; p < this.particles.length; p++) {
this.particles[p].update(this);

30
website/source/assets/javascripts/lib/Chainable.js
View File

@ -1,12 +1,29 @@
(function(){
var Chainable = function(){
var Chainable = function(engine){
this.engine = engine;
this._chain = [];
this._updateTimer = this._updateTimer.bind(this);
this._cycle = this._cycle.bind(this);
};
Chainable.prototype._running = false;
Chainable.prototype._updateTimer = function(tick){
this._timer += tick;
if (this._timer >= this._timerMax) {
this.resetTimer();
this._cycle();
}
};
Chainable.prototype.resetTimer = function(){
this.engine.updateChainTimer = undefined;
this._timer = 0;
this._timerMax = 0;
return this;
};
Chainable.prototype.start = function(){
if (this._running || !this._chain.length) {
return this;
@ -19,9 +36,8 @@ Chainable.prototype.reset = function(){
if (!this._running) {
return this;
}
clearTimeout(this._timer);
this._timer = null;
this._chain.length = 0;
this.resetTimer();
this._timer = 0;
this._running = false;
return this;
};
@ -40,8 +56,10 @@ Chainable.prototype._cycle = function(){
return this._cycle();
}
if (current.type === 'wait') {
clearTimeout(this._timer);
this._timer = setTimeout(this._cycle, current.time || 0);
this.resetTimer();
// Convert timer to seconds
this._timerMax = current.time / 1000;
this.engine.updateChainTimer = this._updateTimer;
current = null;
}