clean up file structure

player/projectile/player_projectile.gd

@@ -0,0 +1,28 @@
+class_name PlayerProjectile
+extends Area3D
+
+const SPEED := 20.
+var _initialized := false
+var velocity: Vector3
+var health: int = 1:
+	set(v):
+		health = v
+		if v == 0:
+			queue_free()
+
+func _ready() -> void:
+	body_entered.connect(func(body: Node3D):
+		if body.has_method("hit"):
+			body.hit(self)
+		health -= 1
+	)
+
+func init(dir: Vector3) -> void:
+	_initialized = true
+	velocity = dir * SPEED
+
+func _physics_process(delta: float) -> void:
+	position += velocity * delta
+
+func _process(_delta: float) -> void:
+	assert(_initialized)

player/projectile/player_projectile.gd.uid

@@ -0,0 +1 @@
+uid://c1owlhp4be7wi

player/projectile/player_projectile.tscn

@@ -0,0 +1,24 @@
+[gd_scene format=3 uid="uid://beruy087nlwfu"]
+
+[ext_resource type="Script" uid="uid://c1owlhp4be7wi" path="res://player/projectile/player_projectile.gd" id="1_0gc0p"]
+[ext_resource type="PackedScene" uid="uid://yri7p15m8l1u" path="res://utils/lifetime/lifetime.tscn" id="2_73r22"]
+
+[sub_resource type="SphereMesh" id="SphereMesh_wqvto"]
+radius = 0.25
+height = 0.5
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_0gc0p"]
+radius = 0.25
+
+[node name="PlayerProjectile" type="Area3D" unique_id=966789634]
+collision_layer = 0
+collision_mask = 12
+script = ExtResource("1_0gc0p")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="." unique_id=2116862847]
+mesh = SubResource("SphereMesh_wqvto")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="." unique_id=908451103]
+shape = SubResource("SphereShape3D_0gc0p")
+
+[node name="Lifetime" parent="." unique_id=631221358 instance=ExtResource("2_73r22")]