mortar + mini gun cannot hit weak points

player/guns/mini_gun.gd

@@ -6,6 +6,7 @@ func fire(aim_angle: float) -> void:
 	var player_projectile: PlayerProjectile = preload("res://player/projectile/player_projectile.tscn").instantiate()
 	player_projectile.init(dir)
 	player_projectile.damage = 5
+	player_projectile.can_hit_weak_points = false
 	player_projectile.global_position = global_position + Vector3.UP * 0.5
 	get_tree().current_scene.add_child(player_projectile)
 	fire_clock = 60. / fire_rate

player/guns/mortar.gd

@@ -0,0 +1,37 @@
+class_name Mortar
+extends Gun
+
+func calculate_projectile_velocity(source: Vector3, target: Vector3, max_height: float) -> Vector3:
+	assert(is_equal_approx(source.y, target.y), "Source and target must be at the same height.")
+	assert(max_height > 0.0, "Max height must be positive.")
+
+	# Flatten to the horizontal plane and get range + direction
+	var horizontal_offset := Vector3(target.x - source.x, 0.0, target.z - source.z)
+	var R := horizontal_offset.length()
+	assert(R > 0.0, "Source and target must not be the same point.")
+	var direction := horizontal_offset / R
+
+	var g := MortarProjectile.GRAVITY
+
+	# Angle whose tangent is 4H/R — peaks exactly at max_height
+	var angle := atan(4.0 * max_height / R)
+
+	# Speed derived from v = sqrt(2gH + gR²/8H)
+	var speed := sqrt(2.0 * g * max_height + (g * R * R) / (8.0 * max_height))
+
+	var horizontal_speed := speed * cos(angle)
+	var vertical_speed   := speed * sin(angle)
+
+	return direction * horizontal_speed + Vector3.UP * vertical_speed
+
+func fire(_aim_angle: float) -> void:
+	var pos: Vector3 = Player.instance.get_node("%Reticle").global_position
+	pos.y = global_position.y
+	var vel := calculate_projectile_velocity(global_position, pos, 10.)
+
+	var proj := preload("res://player/projectile/mortar_projectile.tscn").instantiate()
+	proj.velocity = vel
+	proj.global_position = global_position
+	get_tree().current_scene.add_child(proj)
+
+	fire_clock = 60. / fire_rate

player/guns/mortar.gd.uid

@@ -0,0 +1 @@
+uid://ftrngxkkycl1