Emit speed_changed signal; add tests

scenes/main_scene.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=81 format=3 uid="uid://nnnc0qhx07i8"]
+[gd_scene load_steps=82 format=3 uid="uid://nnnc0qhx07i8"]
 
 [ext_resource type="Script" uid="uid://ctm7qg12s2swt" path="res://scripts/main_scene.gd" id="1_7ykc4"]
 [ext_resource type="PackedScene" uid="uid://cb4n4cqkuddqg" path="res://scenes/pause_menu.tscn" id="1_w2twt"]
@@ -76,6 +76,7 @@
 [ext_resource type="Texture2D" uid="uid://btyfigdtk3x88" path="res://files/random_decor/crates_4.png" id="68_f3krf"]
 [ext_resource type="Texture2D" uid="uid://bvxu5x1awjrjv" path="res://files/random_decor/dirt_001.png" id="69_7tyuc"]
 [ext_resource type="Texture2D" uid="uid://f4hxu68qa4fi" path="res://files/random_decor/dirt_002.png" id="70_isor2"]
+[ext_resource type="Script" uid="uid://blu5qujicfa7e" path="res://scripts/hud.gd" id="72_sgkfd"]
 
 [sub_resource type="StyleBoxFlat" id="StyleBoxFlat_pu3yx"]
 bg_color = Color(0.2627451, 0.2627451, 0.2627451, 0.5882353)
@@ -123,6 +124,7 @@ offset_right = 1270.0
 offset_bottom = 120.0
 tooltip_text = "Player Status Panel"
 theme_override_styles/panel = SubResource("StyleBoxFlat_pu3yx")
+script = ExtResource("72_sgkfd")
 metadata/_edit_use_anchors_ = true
 
 [node name="Stats" type="VBoxContainer" parent="PlayerStatsPanel"]

scripts/game_settings_resource.gd

@@ -22,6 +22,92 @@ signal setting_changed(setting_name: String, new_value: Variant)
 ## game-over states or low-fuel warnings without polling every frame.
 signal fuel_depleted
 
+@export_group("Speed System")
+
+@export var max_speed: float = 713.0:
+	set(value):
+		var new_val: float = max(1.0, value)
+		if _max_speed == new_val:
+			return
+		_max_speed = new_val
+
+		# NEW FIX: Enforce invariant - push min_speed down if max_speed drops below it
+		if _min_speed > _max_speed:
+			self.min_speed = _max_speed
+
+		setting_changed.emit("max_speed", _max_speed)
+	get:
+		return _max_speed
+
+@export var min_speed: float = 95.0:
+	set(value):
+		# NEW FIX: Clamp new min_speed so it cannot exceed the current max_speed
+		var new_val: float = clamp(value, 0.0, _max_speed)
+
+		if _min_speed == new_val:
+			return
+		_min_speed = new_val
+		setting_changed.emit("min_speed", _min_speed)
+	get:
+		return _min_speed
+
+@export var lateral_speed: float = 250.0:
+	set(value):
+		var new_val: float = max(0.0, value)
+		if _lateral_speed == new_val:
+			return
+		_lateral_speed = new_val
+		setting_changed.emit("lateral_speed", _lateral_speed)
+	get:
+		return _lateral_speed
+
+@export var acceleration: float = 200.0:
+	set(value):
+		var new_val: float = max(0.0, value)
+		if _acceleration == new_val:
+			return
+		_acceleration = new_val
+		setting_changed.emit("acceleration", _acceleration)
+	get:
+		return _acceleration
+
+@export var deceleration: float = 100.0:
+	set(value):
+		var new_val: float = max(0.0, value)
+		if _deceleration == new_val:
+			return
+		_deceleration = new_val
+		setting_changed.emit("deceleration", _deceleration)
+	get:
+		return _deceleration
+
+@export var high_yellow_fraction: float = 0.80:
+	set(value):
+		var new_val: float = clamp(value, 0.0, 1.0)
+		if _high_yellow_fraction == new_val:
+			return
+		_high_yellow_fraction = new_val
+
+		# NEW FIX: Enforce invariant - push low_yellow down if high_yellow drops below it
+		if _low_yellow_fraction > _high_yellow_fraction:
+			self.low_yellow_fraction = _high_yellow_fraction
+
+		setting_changed.emit("high_yellow_fraction", _high_yellow_fraction)
+	get:
+		return _high_yellow_fraction
+
+@export var low_yellow_fraction: float = 0.10:
+	set(value):
+		# NEW FIX: Clamp new low_yellow so it cannot exceed the current high_yellow
+		var new_val: float = clamp(value, 0.0, _high_yellow_fraction)
+
+		if _low_yellow_fraction == new_val:
+			return
+		_low_yellow_fraction = new_val
+		setting_changed.emit("low_yellow_fraction", _low_yellow_fraction)
+	get:
+		return _low_yellow_fraction
+
 @export_group("Fuel System")
 
 ## Maximum fuel capacity.
@@ -167,6 +253,15 @@ var _medium_fuel_threshold: float = 50.0
 var _low_fuel_threshold: float = 30.0
 var _no_fuel_threshold: float = 15.0
 
+# Speed Backing Fields
+var _max_speed: float = 713.0
+var _min_speed: float = 95.0
+var _lateral_speed: float = 250.0
+var _acceleration: float = 200.0
+var _deceleration: float = 100.0
+var _high_yellow_fraction: float = 0.80
+var _low_yellow_fraction: float = 0.10
+
 
 func _init() -> void:
 	# This only runs if the values aren't already set (like in a .new() call)

scripts/globals.gd

@@ -326,8 +326,10 @@ func load_options(menu_to_hide: Node) -> void:
 # @param message: The string message to log.
 # @param level: The log level (default INFO).
 func log_message(message: String, level: LogLevel = LogLevel.INFO) -> void:
-	if level < settings.current_log_level:
+	# FIX: Guard the log level check. If settings is null, print everything.
+	if is_instance_valid(settings) and level < settings.current_log_level:
 		return  # Skip if below threshold
+
 	var level_str: String = LogLevel.keys()[level]  # Converts enum to string: "INFO", etc.
 	var timestamp: String = Time.get_datetime_string_from_system()
 	print("[%s] [%s] %s" % [timestamp, level_str, message])