Added splash damage

game/entities/other/blast.gd

@@ -0,0 +1,40 @@
+class_name Blast
+extends Area2D
+
+
+@export var damage : AbstractDamage
+@export var shape : CircleShape2D
+
+
+const FALLOFF_FACTOR = 3
+
+
+@onready var collision : CollisionShape2D = $CollisionShape2D
+
+
+func _ready() -> void:
+	if collision and shape:
+		collision.shape = shape
+
+
+func get_damage_to(body: Node2D) -> AbstractDamage:
+	var distance := _get_distance_to(body)
+	var damage_dub := damage.duplicate()
+	
+	var factor := _get_damage_factor(distance)
+	damage_dub.value = damage_dub.value * factor
+	
+	return damage_dub
+
+
+func _get_distance_to(body: Node2D) -> float:
+	return global_position.distance_to(body.global_position)
+
+
+func _get_damage_factor(distance: float) -> float:
+	if not shape: return 0.0
+	
+	var coef := distance / shape.radius
+	if coef > 1:
+		return 0.0
+	return 1 - coef * coef * coef