Javascript Game Loop and RequestAnimationFrameCallback

[Jake Frederick]

I'm trying to get a basic enter_frame style game loop going in Javascript. In non Haxe JS I've done this before using requestAnimationFrame and some browser checking (http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/). I noticed that Haxe has a RequestAnimationFrameCallback type, which the requestAnimationFrame function requires as an argument; how exactly is this supposed to work? How would I type the callback function as RequestAnimationFrameCallback?

[Justin L Mills]

I made this awhile ago it seems to work as well as a Timer for running the render loop of my zebra animation. Although only checked in my generic css3 enterframe class not an actual example of it's use but should be obvious.

https://github.com/Justinfront/divtastic3/blob/master/src/core/CSSenterFrame.hx

No idea if this is good practice?

Best Justin

On 16/11/2013 04:39, Jake Frederick wrote:

I'm trying to get a basic enter_frame style game loop going in Javascript. In non Haxe JS I've done this before using requestAnimationFrame and some browser checking (http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/). I noticed that Haxe has a RequestAnimationFrameCallback type, which the requestAnimationFrame function requires as an argument; how exactly is this supposed to work? How would I type the callback function as RequestAnimationFrameCallback?

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[Andy Li]

Read the source ;)

RequestAnimationFrameCallback is just a typedef of Float -> Bool, i.e. any function that accept Float and returns Bool.

The js.html.* packages in haxe contains the same HTML API of JS's (together with a few extra convenient methods). So you may use the same API as you would in JS.

Cheers,

Andy

On Sat, Nov 16, 2013 at 12:39 PM, Jake Frederick <jfreder...@gmail.com> wrote:

I'm trying to get a basic enter_frame style game loop going in Javascript. In non Haxe JS I've done this before using requestAnimationFrame and some browser checking (http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/). I noticed that Haxe has a RequestAnimationFrameCallback type, which the requestAnimationFrame function requires as an argument; how exactly is this supposed to work? How would I type the callback function as RequestAnimationFrameCallback?

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[Jake Frederick]

Thanks JLM, that's basically what I was going for I just didn't realize that the callback is technically supposed to return a boolean (vanilla javascript's looseness lets you get away with a lot, one reason I'm glad to be working with Haxe!)