How do I make Sonic trigger an animation when he hits an Area2D?

[ImmaStikboi]

I'm trying to make it so that when Sonic collides with an Area2D, an animation for both the banana and Sonic plays. How do I this? When Sonic hits the Area2D, nothing happens and I don't know why.
Here's the nodes I have and the script I built for reference:

[QuartzTS]

The Player scene already has an animation player.. why not use that instead? It can be like:
[insert reference to the player here].animator.play(Anination to play) (animator is the reference to the animation player)

Also, instead of checking the name of the node, you can define the function like that:
func _on_Slippage_body_entered(body: PlayerChar) (PlayerChar is the player's class, btw)

Btw, are you sure that you set the Area2D's collision mask to be the same as the player's collision layer?

[ImmaStikboi]

I didn't consider that last bit... Let me try and make it the same.

[ImmaStikboi]

I changed the script to this:

and I set the collision mask for the Slippage Area2D to this:

And even moved the animation to the Player animator you mentioned earlier, I should mention that it is a tween animation.
It still doesn't work though. Nothing happens still when Sonic hits the Area2D.

[QuartzTS]

Can't see the other layers from the second image.. do you mean you set the collision mask to detect layer 11? (Also sorry I forgot to say, according to the wiki, the Player's collision layer is 13, so maybe it might help to set the collision mask to layer 13)

[ImmaStikboi]

O sorry, my bad with the image being unclear, nah it's on mask 13:

[DimensionWarped]

1 - make sure your collision callback function is actually running. Put a print statement at the beginning of it and make sure it gets logged.

2 - I say this because I don't see the little icon on your editor that indicates that you properly wired the signal to your callback function. For comparison sake, this is how the one for the boss boundary setting collision appears:

Notice the little green arrow and box thing on the top left. That indicates that this function is called back via a signal. You need to manually configure the collision box to point at that function in the node inspector right here.

Notice that the body_entered signal for Area2D shows the same icon from before here.

I strongly recommend you take a little time to learn about how signals work in Godot since it's pretty fundamental to how a lot of stuff in the engine works... and only becoming more essential as we go.

Aside from that, I do have one recommendation in particular for the code, and that's that you might want to set the player state to the animation state, particularly if you don't want the player to just be able to jump out of whatever animation you are trying to set... or have it change because the player's ground speed shifts between walk/run/peel-out and such. If you set it to ANIMATION/GIMMICK depending on which version you are working with, then the normal state probably won't try to change it out from under you. Of course, at that point you do need to set up some condition for the player to return to their normal state. You might want to learn about connectable gimmicks.

[ImmaStikboi]

how do i change the player's state?

[QuartzTS]

Simple.. use the set_state function.. just like that:
player_reference.set_state(PlayerChar.STATES.ANIMATION)

(Note: You can say player_reference.STATES.ANIMATION instead, but I just prefer using the PlayerChar class.. also, replace ANIMATION with GIMMICK if you're using the Player Refactor branch)

[ImmaStikboi]

it all FINALLY works, thx guys!

[DimensionWarped]

Glad I could help. Hope you have fun!