aiming

scripts/weapon.gd

@@ -8,6 +8,9 @@ var shooter: PhysicsBody3D # Resolved in _ready(): nearest ancestor body
 var _cooldown := 0.0
 
 @onready var _muzzle: Marker3D = %Muzzle
+@onready var _yaw: Node3D = get_node_or_null("%Yaw")
+@onready var _pitch: Node3D = get_node_or_null("%Pitch")
+@onready var hitbox: PhysicsBody3D = get_node_or_null("%Hitbox")
 
 func _ready() -> void:
 	# Fallback: nearest ancestor body is the shooter (hand-placed weapons).
@@ -27,5 +30,39 @@ func try_fire() -> bool:
 	get_tree().current_scene.add_child(p)
 	if shooter != null:
 		p.add_collision_exception_with(shooter)
+	if hitbox != null:
+		p.add_collision_exception_with(hitbox)
 	p.launch(def.ammo, _muzzle.global_transform, def.muzzle_speed_scale)
 	return true
+
+func aim_at(point, delta: float) -> void:
+	if _yaw == null or def == null:
+		return
+
+	var yaw_step := deg_to_rad(def.traverse_speed_deg) * delta
+	var pitch_step := deg_to_rad(def.elevation_speed_deg) * delta
+
+	if point == null:
+		# Nobody aiming: slew back to the stowed position.
+		_yaw.rotation.y = rotate_toward(_yaw.rotation.y, 0.0, yaw_step)
+		if _pitch != null:
+			_pitch.rotation.x = rotate_toward(_pitch.rotation.x, 0.0, pitch_step)
+		return
+
+	# Yaw: desired angle lives in the space of the node we rotate *within*,
+	# i.e. the Yaw node's parent.
+	var local: Vector3 = _yaw.get_parent_node_3d().to_local(point)
+	var desired_yaw := atan2(-local.x, -local.z)
+	_yaw.rotation.y = rotate_toward(_yaw.rotation.y, desired_yaw, yaw_step)
+
+	if _pitch == null:
+		return
+
+	# Pitch: same idea, in the Pitch node's parent space (the freshly-yawed Yaw node).
+	var lp: Vector3 = _pitch.get_parent_node_3d().to_local(point)
+	var desired_pitch := clampf(
+		atan2(lp.y, Vector2(lp.x, lp.z).length()),
+		deg_to_rad(def.elevation_min_deg),
+		deg_to_rad(def.elevation_max_deg)
+	)
+	_pitch.rotation.x = rotate_toward(_pitch.rotation.x, desired_pitch, pitch_step)