Rotate viewport

[justgage]

I'm not sure how hard this would be but I think it would be awesome to be able to rotate view-ports.

[hornta]

Will you provice and example of using a rotated viewport? Maybe a minimap which centers on you?

[ippa]

Do you have a special usecase in mind? Code-wise it probably shouldn't be much work due to the flexibility of the canvas. It would be like 1 line to add here:

https://github.com/ippa/jaws/blob/master/src/viewport.js#L152

I would suggest adding it to your local jaws.js for the time being to get a feel for if we really want it there.. you could of course do your context.rotate before whatever canva draw-call in your game code too.. Also I'm a bit busy with clientwork for 2-3 weeks now.

[justgage]

I think it would be good in many situations such as if you had a racing game that you wanted to view to rotate to face whichever way the car is going, a space game like they need to be fed -> http://gmc.yoyogames.com/index.php?showtopic=469713 (where the view would rotate with it the player) I think there's tons of really cool things you could do with it.

[ippa]

mm.. good examples. One thing with rotation is that you also need an anchorpoint. In jaws.Sprite you have setAnchor("center|top_left|bottom_center|etc..."). Thinking if something similar makes sense for the viewport or you usually want more exact control when rotating it.

[justgage]

More control is always better but I would say that the default would be center.

[ippa]

Looking more into this I think it might not be as straightforward as I first thought. If we put rotate in Viewport.apply basically everything will be rotated (of course not a HUD/opther thigns outside of viewport.apply()). I'm not sure this will lead to the desired behavior, rotating enemies, player, backgrounds around a single point...?

I suggest you test some with a game you're developing to understand what we really want here. Right now I don't have the time to dive deep into this. I would suggest starting by implementing this.angle in Viewport just as Sprite does it.. (as suggested above). It might be what you want but I'm not sure.

[justgage]

I'll have to look into it when I have time.