Fix GunShot deallocation

Now bullets are deallocated once they hit a wall

assets/misc/SimpleGunShot.tscn

@@ -1,16 +1,25 @@
-[gd_scene load_steps=6 format=2]
+[gd_scene load_steps=8 format=2]
 
 [ext_resource path="res://assets/misc/SimpleGunShot.png" type="Texture" id=1]
 [ext_resource path="res://assets/misc/Hitbox.tscn" type="PackedScene" id=2]
 [ext_resource path="res://src/misc/SimpleGunShot.gd" type="Script" id=3]
-[ext_resource path="res://src/misc/SimpleGunShotHitbox.gd" type="Script" id=4]
+[ext_resource path="res://assets/misc/Hurtbox.tscn" type="PackedScene" id=5]
+
+[sub_resource type="GDScript" id=3]
+script/source = "extends Area2D
+
+func _on_Hitbox_area_entered(area):
+	print(\"hit\")
+	queue_free() # remove myself
+"
 
 [sub_resource type="RectangleShape2D" id=1]
 extents = Vector2( 1.00781, 1.99957 )
 
+[sub_resource type="RectangleShape2D" id=2]
+extents = Vector2( 1, 2 )
+
 [node name="SimpleGunShot" type="KinematicBody2D"]
-visible = false
-collision_layer = 0
 collision_mask = 20
 script = ExtResource( 3 )
 
@@ -18,10 +27,20 @@ script = ExtResource( 3 )
 texture = ExtResource( 1 )
 
 [node name="GunShotHitbox" parent="." instance=ExtResource( 2 )]
-script = ExtResource( 4 )
+visible = false
+collision_mask = 20
+script = SubResource( 3 )
 
 [node name="CollisionShape2D" parent="GunShotHitbox" index="0"]
 shape = SubResource( 1 )
-[connection signal="area_entered" from="GunShotHitbox" to="GunShotHitbox" method="_on_Hitbox_area_entered"]
+
+[node name="GunShotHurtbox" parent="." instance=ExtResource( 5 )]
+collision_layer = 0
+collision_mask = 4
+
+[node name="CollisionShape2D2" type="CollisionShape2D" parent="GunShotHurtbox"]
+shape = SubResource( 2 )
+[connection signal="body_entered" from="GunShotHitbox" to="." method="_on_GunShotHitbox_body_entered"]
+[connection signal="body_entered" from="GunShotHurtbox" to="." method="_on_Hurtbox_body_entered"]
 
 [editable path="GunShotHitbox"]

src/misc/SimpleGunShot.gd

@@ -9,3 +9,8 @@ func _ready():
 
 func _physics_process(delta):
 	move_and_collide(Vector2(0, SPEED * -1))
+
+# decrease enemy or player's life
+func _on_GunShotHitbox_body_entered(body: Node):
+	# TODO body's hp
+	queue_free()

src/misc/SimpleGunShotHitbox.gd

@@ -1,4 +0,0 @@
-extends Area2D
-
-func _on_Hitbox_area_entered(area):
-	queue_free()