Add new level, collapsable component, knockback component

scripts/components/damage.gd

@@ -1,7 +1,20 @@
 class_name DamageComponent
-extends Node2D
+extends Node
 
 @export var damage: float = 0.25
+@export var area2d: Area2D
+
+func _ready() -> void:
+	if not area2d:
+		printerr("No area2d assigned!")
+		return
+		
+	area2d.body_entered.connect(on_area2d_body_entered)
 
 func deal_damage(target: HealthComponent):
 	target.decrease_health(damage)
+
+func on_area2d_body_entered(body: Node2D):
+	if body.has_node("HealthComponent"):
+		var health_component: HealthComponent = body.get_node("HealthComponent")
+		deal_damage(health_component)