Fixed debugger errors in many files and optimized some scenes/code

Levels/Interactables/Gem.gd

@@ -1,24 +1,11 @@
 extends Node2D
 
 
-# Declare member variables here. Examples:
-# var a: int = 2
-# var b: String = "text"
-
-
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
-    pass # Replace with function body.
-
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-#func _process(delta: float) -> void:
-#	pass
-
-
-func _on_AnimationPlayer_animation_finished(anim_name: String) -> void:
+func _on_AnimationPlayer_animation_finished(_anim_name: String) -> void:
     $GemSprite.visible = false
+    return
 
 
-func _on_AnimationPlayer_animation_started(anim_name: String) -> void:
+func _on_AnimationPlayer_animation_started(_anim_name: String) -> void:
     $GemSprite.visible = true
+    return