NineTileBox Sprite Opacity

[joshhammock]

Problem to solve

It looks like the NineTileBoxComponent does not have an opacity provider to be able to apply opacity effects like fadeIn fadeOut transitions, etc.

Proposal

Adding OpacityProvider to NineTileBoxComponent for use with opacity effects.

More information

Is there a known workaround that I'm missing or otherwise would this be a possible feature to add?

Other

• Are you interested in working on a PR for this?

[spydon]

Should be easy to fix, we just have to add the HasPaint mixin to the component and then accept an override Paint for the class rendering it, just like for the SpriteComponent.
https://github.com/flame-engine/flame/blob/main/packages%2Fflame%2Flib%2Fsrc%2Fcomponents%2Fsprite_component.dart#L124

[joshhammock]

Thanks! In the meantime I was able to mix in HasPaint to an extended NineTilesBoxComponent and extend its NineTileBox, overriding drawRect to apply the component's opacity value to drawRect's paint object.

[spydon]

If you want to you can put up a PR with the implementation on the real classes. :)

[joshhammock]

I'm a bit of a beginner. I wouldn't trust myself not to mess something up. 😅 I'll look into giving it a try though!

[spydon]

If you want guidance and learn how to PR towards our repo, I can tell you how to do it. Are you on our discord?

[joshhammock]

I am now. I can post when I have some availability and help would certainly be appreciated. ☺️
Discord handle is OffhandGames