Cannot pass in FlxTypedGroup class param using FlxG.overlap

Question

I want the player to pickup objects in my game using the code below, but I am getting:

Error #1034: Type Coercion failed: cannot convert flixel::FlxSprite@51e1b69 to Player.

    ...
    FlxG.overlap(weapons, players, onPickup)
}

private function onPickup(wep:Weapon, player:Player):Void
{ 
    //access player function 
}

I've initialized the players and weapons already as below, and added to the group

players= new FlxTypedGroup<Player>();
weapons= new FlxTypedGroup<Weapon>();

Weapon extends FlxSprite and Player extends FlxTypedGroup<FlxSprite>.

I'm using FlxTypedGroup because I want the player to have multiple sprites associated with it.

Please help so I can access the player class variables!

If I replace player:Player with player:FlxSprite there is no error, but then I can no longer access Player class functions.

Answer 1

I know this is probably a little bit late, but there are a few things you can try:

You could try using FlxSpriteGroup for Player instead of FlxTypedGroup. It may take some work to get it working the way you want.

Also, the reason why it's giving you an error, is because overlap and collide will (by default) drill down through your Groups until it comes to an actual object...

How to explain... If you have a FlxTypedGroup<Player> and your Player object extends FlxTypedGroup<PlayerPart> (if PlayerPart extends FlxSprite or something), when you do FlxG.overlap(weapons, players, onPickup), overlap is NOT going to pass the Player object, it's going to pass the PlayerPart object that overlapped - in fact, it's going to call onPickup once for EVERY PlayerPart object that overlaps a weapon - possibly the same one - this update.

You can use this behavior to your advantage, if you can figure it out - make your Player group contain several PlayerParts but set all of them to allowCollisions = NONE except for one which will be your hitbox, etc.

There's lots of things you can do, it's just figuring out the specifics. Good Luck!