Fireball, need to tweak the animation to get some grey at the end like the standing fire

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game/scenes/Projectiles/fireball.gd

@@ -0,0 +1,41 @@
+extends Area3D
+
+@export var initial_speed := 24.0
+@export var minimum_speed := 4.0
+@export var deceleration := 9.0
+@export var lifetime := 3.0
+
+var _direction := Vector3.FORWARD
+var _speed := initial_speed
+var _age := 0.0
+
+
+func launch(origin: Vector3, direction: Vector3) -> void:
+	global_position = origin
+	if direction.length() > 0.0001:
+		_direction = direction.normalized()
+		look_at(global_position + _direction, Vector3.UP)
+	_speed = initial_speed
+
+
+func _ready() -> void:
+	body_entered.connect(_on_body_entered)
+	area_entered.connect(_on_area_entered)
+
+
+func _physics_process(delta: float) -> void:
+	_age += delta
+	if _age >= lifetime:
+		queue_free()
+		return
+
+	global_position += _direction * _speed * delta
+	_speed = move_toward(_speed, minimum_speed, deceleration * delta)
+
+
+func _on_body_entered(_body: Node3D) -> void:
+	queue_free()
+
+
+func _on_area_entered(_area: Area3D) -> void:
+	queue_free()