Make OuterMirror fully functional!

hud/OuterMirror.tscn

@@ -1,6 +1,7 @@
-[gd_scene load_steps=2 format=2]
+[gd_scene load_steps=3 format=2]
 
 [ext_resource path="res://assets/textures/OuterMirror/Background.png" type="Texture" id=1]
+[ext_resource path="res://scripts/hud/OuterMirror.gd" type="Script" id=2]
 
 [node name="OuterMirror" type="Control"]
 anchor_left = 0.5
@@ -11,6 +12,7 @@ margin_bottom = 450.0
 rect_min_size = Vector2( 1120, 450 )
 rect_scale = Vector2( 0.365, 0.365 )
 rect_pivot_offset = Vector2( 560, 25 )
+script = ExtResource( 2 )
 __meta__ = {
 "_edit_use_anchors_": false
 }
@@ -40,3 +42,4 @@ gui_disable_input = true
 gui_snap_controls_to_pixels = false
 
 [node name="MirrorCam" type="Camera" parent="Viewport"]
+far = 35.0

scripts/hud/OuterMirror.gd

@@ -0,0 +1,61 @@
+# Copyright 2021, Frederick Schenk
+
+# --- OuterMirror Script ---
+# The script for a simple mirror.
+
+extends Control
+
+# -- Properties --
+
+# - The vehicle using this mirror -
+var DisplayedVehicle : Vehicle setget set_displayed_vehicle, get_displayed_vehicle
+
+# -- Variables --
+
+# - Internal nodes -
+onready var _mirror_camera   : Camera    = $Viewport/MirrorCam
+onready var _mirror_viewport : Viewport  = $Viewport
+onready var _mirror_texture  : Polygon2D = $Mirror
+
+# - Runtime variables -
+var _mirror_active     : bool
+var _displayed_vehicle : Vehicle
+var _mirror_point      : CameraPoint
+
+# -- Functions --
+
+# - Runs at start up -
+func _ready() -> void:
+	GameSettings.connect("setting_changed", self, "_modify_settings")
+
+# - Runs at every frame -
+func _process(_delta) -> void:
+	if _mirror_active:
+		# Follow the camera point
+		_mirror_camera.global_transform = _nonrot_transform(_mirror_point)
+
+# - Returns a Transform tha is at a Node's position, but only y rotation -
+func _nonrot_transform(base : Spatial) -> Transform:
+	var position : Vector3 = base.global_transform.origin
+	var y_rotate : float   = base.global_transform.basis.get_euler().y
+	return Transform(Basis(Vector3.UP, y_rotate), position)
+
+# - Change internal variables when settings were modified -
+func _modify_settings() -> void:
+	_mirror_active = GameSettings.get_setting("Performance", "OuterMirrorActive")
+	if _mirror_active:
+		if _displayed_vehicle._outer_mirror_point != null:
+			_mirror_point = _displayed_vehicle._outer_mirror_point
+			_mirror_texture.texture = _mirror_viewport.get_texture()
+			visible = true
+	else:
+		_mirror_texture.texture = null
+		visible = false
+
+# - DisplayedVehicle property -
+func set_displayed_vehicle(node : Vehicle) -> void:
+	_displayed_vehicle = node
+	_modify_settings()
+
+func get_displayed_vehicle() -> Vehicle:
+	return _displayed_vehicle