Pixi.js: How ticker.speed works

[readygosports]

As document says
// Scales ticker.deltaTime to what would be
// the equivalent of approximately 120 FPS
ticker.speed = 2;

if i set ticker.speed = .5 the whole render should play at 30fps?right?
but it does not work.

[themoonrat]

PIXI only renders when you tell it to render. If you hook it up to requestAnimationFrame, then that gets called whenever the browser can draw again; changing the shared ticker does not effect this at all.

Even if you did hook up renderer.render to a PIXI ticker, it would still call back 60 times a second. You see, the speed factor effects the deltaTime value that is passed in when a ticker updates, not how often it is called.

So, if the game was running at 60fps, then at a scale of 1, then the tick update would be called 60 times a second, each time with a deltaTime of 1. But if you set the scale to 0.5, then the tick update would be called 60 times a second, but with the deltaTime of 0.5.

@readygosports Could you provide a jsfiddle of what you mean please if the above doesn't cover your question :)

[GoodBoyDigital]

Closing as this seems answered! Cheers!

[lock[bot]]

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