Actor does not set initial opacity based on Color alpha channel in its constructor

[MrAlexLau]

Using version 0.2.5 (I haven't tried in other version), I have an actor declared like this:
var ground = new ex.Actor(0, Config.gameHeight - Config.groundHeight, Config.gameWidth, 5, ex.Color.Transparent);

Which results in a white bar:

I would expect not to see the bar at all.

[kamranayub]

We can look into this, definitely seems wrong.

In the meantime, you can also set ground.invisible = true to not draw it.

Also, if you want to take some action when your jumper hits the ground, it might be worth using a Trigger instead as it's light-weight and meant for, well, triggering things when actors touch its bounds.

[kamranayub]

Yah, I think I found it.

There's a line in Actor.draw that says:

if(this.color) this.color.a = this.opacity;

Well, in the constructor, we're not setting the initial opacity to the color you passed in (if any). So it's always 1.

To workaround, you can either set invisible or opacity.

[MrAlexLau]

Setting the opacity to zero works perfectly. Thanks for the suggestion.

[eonarheim]

Good catch. I feel like the actor opacity should default to the alpha of the color passed in at constructor time. I will make the change.