camera: remove shift lock

player/camera.gd

@@ -1,26 +1,52 @@
 class_name CameraGimbal extends Node3D
 
 @export var rotation_speed = (PI / 180) * 120
-@export var shift_lock = false
 @export var default_zoom = 8
 
-var mouse_locked = false
+# is mouse captured by game permanently?
+# (i.e. not just holding right click)
+var locked = false
 var mouse_velocity = Vector2.ZERO
-var locked_mouse_position = Vector2.ZERO
 
 var current_zoom = default_zoom
 var zoom_min = 4
 var zoom_max = 80
 var zoom_speed = 20
 
+func _lock():
+	Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
+
+func _unlock():
+	Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
+	mouse_velocity = Vector2.ZERO
+
+func lock():
+	_lock()
+	locked = true
+
+# optional API function for nodes that want
+# to unlock the mouse for a period of time
+func unlock():
+	_unlock()
+	locked = false
+
 func reset():
 	basis = Basis()
 	$InnerGimbal.basis = Basis()
 	current_zoom = default_zoom
 
-func rotate_camera_y(y, delta):
+# y is before x because the outer gimbal is
+# in charge of rotating the y axis
+func rotate_camera(delta):
+	var y = 0
+	var x = 0
+
+	if mouse_velocity.x > 5 or mouse_velocity.x < -5:
+		y -= clamp(mouse_velocity.x / 12.5, -10, 10)
+	if mouse_velocity.y > 5 or mouse_velocity.y < -5:
+		x -= clamp(mouse_velocity.y / 12.5, -10, 10)
+
 	rotate_object_local(Vector3.UP, y * rotation_speed * delta)
-func rotate_camera_x(x, delta):
 	$InnerGimbal.rotate_object_local(
 		Vector3.RIGHT, x * rotation_speed * delta)
 	$InnerGimbal.rotation.x = clamp($InnerGimbal.rotation.x, -0.8, 0.7)
@@ -36,34 +62,26 @@ func _input(event):
 	current_zoom = clamp(current_zoom, zoom_min, zoom_max)
 
 func _process(delta):
-	var y = 0
-	var x = 0
-
-	if Input.is_action_just_pressed("shift_lock"):
-		shift_lock = not shift_lock
-	if Input.is_mouse_button_pressed(MOUSE_BUTTON_RIGHT) or shift_lock == true:
-		if mouse_locked == false:
-			mouse_locked = true
-			locked_mouse_position = get_viewport().get_mouse_position()
-		Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
-
-		if mouse_velocity.x > 5 or mouse_velocity.x < -5:
-			y -= clamp(mouse_velocity.x / 12.5, -10, 10)
-		if mouse_velocity.y > 5 or mouse_velocity.y < -5:
-			x -= clamp(mouse_velocity.y / 12.5, -10, 10)
+	# rotate camera
+	if locked:
+		rotate_camera(delta)
 	else:
-		Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
-		mouse_velocity = Vector2.ZERO
-		mouse_locked = false
-
-	rotate_camera_y(y, delta)
-	rotate_camera_x(x, delta)
-
-	if Input.is_action_pressed("cam_reset"):
-		reset()
+		if Input.is_mouse_button_pressed(MOUSE_BUTTON_RIGHT):
+			_lock()
+			rotate_camera(delta)
+		else:
+			_unlock()
 
+	# zoom in/out
 	var pos = Vector3($InnerGimbal/Camera3D.position)
 	pos.y = lerp(pos.y, float(current_zoom), zoom_speed * delta)
 	pos.z = lerp(pos.z, float(current_zoom), zoom_speed * delta)
 
 	$InnerGimbal/Camera3D.position = pos
+
+	# reset camera
+	if Input.is_action_pressed("cam_reset"):
+		reset()
+
+func _ready():
+	lock()