mortar + mini gun cannot hit weak points

enemies/police_car/weak_point.gd

@@ -8,6 +8,7 @@ func _ready() -> void:
 
 func hit(projectile: PlayerProjectile, _damage: float) -> bool:
 	if projectile == null: return false
+	if not projectile.can_hit_weak_points: return false
 
 	var angle := projectile.velocity.angle_to(-parent.velocity)
 	var weak_point_hit := rad_to_deg(angle) < 25.

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

player/player.gd

@@ -28,7 +28,7 @@ var state := State.NORMAL
 var dash_direction: Vector2
 var stamina := 1.0
 
-@onready var gun: Gun = %MiniGun
+@onready var gun: Gun = %Mortar
 
 func _init() -> void:
 	instance = self

player/player.tscn

@@ -4,6 +4,7 @@
 [ext_resource type="Script" uid="uid://cjdxibg3pnans" path="res://player/score_label.gd" id="2_onrkg"]
 [ext_resource type="Script" uid="uid://fv1n5noqdfg2" path="res://player/guns/basic_gun.gd" id="3_g1dw6"]
 [ext_resource type="Script" uid="uid://b87cyvu2m5b1k" path="res://player/guns/mini_gun.gd" id="4_yw30f"]
+[ext_resource type="Script" uid="uid://ftrngxkkycl1" path="res://player/guns/mortar.gd" id="5_qjkh3"]
 
 [sub_resource type="FastNoiseLite" id="FastNoiseLite_onrkg"]
 
@@ -99,3 +100,8 @@ script = ExtResource("3_g1dw6")
 unique_name_in_owner = true
 script = ExtResource("4_yw30f")
 fire_rate = 800.0
+
+[node name="Mortar" type="Node3D" parent="Guns" unique_id=1321220525]
+unique_name_in_owner = true
+script = ExtResource("5_qjkh3")
+fire_rate = 250.0

player/projectile/mortar_projectile.gd

@@ -0,0 +1,17 @@
+class_name MortarProjectile
+extends Node3D
+
+var velocity: Vector3
+
+const GRAVITY := 40.
+
+func _process(delta: float) -> void:
+	position += velocity * delta
+	velocity += GRAVITY * Vector3.DOWN * delta
+
+	if position.y <= 0.:
+		var explosion := preload("res://player/explosion/explosion.tscn").instantiate()
+		explosion.position = position
+		add_sibling(explosion)
+
+		queue_free()

player/projectile/mortar_projectile.gd.uid

@@ -0,0 +1 @@
+uid://dgnyxjs1f61lc

player/projectile/mortar_projectile.tscn

@@ -0,0 +1,11 @@
+[gd_scene format=3 uid="uid://i5lihai81ec1"]
+
+[ext_resource type="Script" uid="uid://dgnyxjs1f61lc" path="res://player/projectile/mortar_projectile.gd" id="1_7aq8w"]
+
+[sub_resource type="SphereMesh" id="SphereMesh_7aq8w"]
+
+[node name="MortarProjectile" type="Node3D" unique_id=1380191443]
+script = ExtResource("1_7aq8w")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="." unique_id=380266621]
+mesh = SubResource("SphereMesh_7aq8w")

player/projectile/player_projectile.gd

@@ -10,6 +10,7 @@ var health: int = 1:
 		if v == 0:
 			queue_free()
 var damage := 10.
+var can_hit_weak_points := true
 
 func _on_collision(node: Node3D):
 	if node.has_method("hit"):