Add a main menu scene (#47)

MainMenu.tscn is now project.godot's entry point: Play / Map Editor
(disabled, explains itself - #48 wires it up) / Quit (hidden in web
builds), styled like the rest of the game's menus and reusing the
starfield shader for its background.

Play calls GameState.reset_new_game(), so a second playthrough in the
same process starts fresh instead of inheriting whatever the previous
run left in the autoload - existing tests still load Main.tscn
directly and are unaffected.

Part of the #40 conquest-mechanic breakdown.

GameState.gd

@@ -344,6 +344,33 @@ func reset_progression() -> void:
 	vessel_levels.clear()
 
 
+# Called from the main menu's Play button (#47): the autoload survives
+# change_scene_to_file(), so without this a second playthrough in the same
+# process would start from wherever the last one left off instead of a
+# fresh game.
+func reset_new_game() -> void:
+	has_return_position = false
+	surviving_ship_count = BASE_FLEET_SIZE
+	surviving_vessel_types = PackedStringArray()
+	return_world_position = Vector2.ZERO
+	return_camera_zoom = 1.0
+	planet_name = ""
+	planet_id = ""
+	planet_definition_id = "rocky"
+	explored_chunks.clear()
+	bank_inventory = INVENTORY.new({RESOURCE_ORE: 500})
+	fleet_inventory = INVENTORY.new()
+	buildings.clear()
+	next_building_id = 1
+	stored_vessels.clear()
+	vessel_deliveries.clear()
+	extractors.clear()
+	transporters.clear()
+	planet_capture.clear()
+	reset_progression()
+	reset_formation()
+
+
 # --- building stock and production queue (#16) -----------------------------
 
 # Since #12, a building cannot just deduct from the bank at the moment of

MainMenu.gd

@@ -0,0 +1,33 @@
+extends Node2D
+
+@onready var play_button: IconButton = $UI/PlayButton
+@onready var editor_button: IconButton = $UI/EditorButton
+@onready var quit_button: IconButton = $UI/QuitButton
+@onready var status_label: Label = $UI/StatusLabel
+
+
+func _ready() -> void:
+	play_button.pressed.connect(_on_play_pressed)
+	editor_button.pressed.connect(_on_editor_pressed)
+	# #48 wires the real map editor scene up to this button; until then it
+	# stays visible but explains itself instead of silently doing nothing
+	# or pointing at a scene that doesn't exist yet.
+	editor_button.enabled = false
+	quit_button.pressed.connect(_on_quit_pressed)
+	quit_button.visible = not OS.has_feature("web")
+
+
+func _on_play_pressed() -> void:
+	GameState.reset_new_game()
+	get_tree().change_scene_to_file("res://Main.tscn")
+
+
+func _on_editor_pressed() -> void:
+	if editor_button.enabled:
+		get_tree().change_scene_to_file("res://PlanetSetupEditor.tscn")
+		return
+	status_label.text = "Map editor coming soon"
+
+
+func _on_quit_pressed() -> void:
+	get_tree().quit()

MainMenu.gd.uid

@@ -0,0 +1 @@
+uid://p7yl0hc43yai

MainMenu.tscn

@@ -0,0 +1,139 @@
+[gd_scene load_steps=4 format=3]
+
+[ext_resource type="Script" path="res://MainMenu.gd" id="1"]
+[ext_resource type="Script" path="res://IconButton.gd" id="2"]
+[ext_resource type="Shader" path="res://starfield.gdshader" id="3"]
+
+[sub_resource type="ShaderMaterial" id="1"]
+shader = ExtResource("3")
+shader_parameter/camera_cell = Vector2(0, 0)
+shader_parameter/camera_frac = Vector2(0, 0)
+shader_parameter/camera_zoom = 1.0
+shader_parameter/viewport_size = Vector2(720, 1280)
+shader_parameter/cell_size = 60.0
+shader_parameter/bg_color = Color(0.02, 0.02, 0.08, 1)
+
+[node name="MainMenu" type="Node2D"]
+script = ExtResource("1")
+
+[node name="BackgroundLayer" type="CanvasLayer" parent="."]
+layer = -10
+
+[node name="Starfield" type="ColorRect" parent="BackgroundLayer"]
+material = SubResource("1")
+mouse_filter = 2
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+
+[node name="UI" type="CanvasLayer" parent="."]
+
+[node name="TitleLabel" type="Label" parent="UI"]
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -300
+offset_right = 300
+offset_top = -560
+offset_bottom = -460
+theme_override_font_sizes/font_size = 60
+horizontal_alignment = 1
+text = "SPACESHIP TEST"
+
+[node name="PlayButton" type="Control" parent="UI"]
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -64
+offset_right = 64
+offset_top = -300
+offset_bottom = -172
+script = ExtResource("2")
+icon = 2
+glow_color = Color(0.35, 0.95, 0.55, 1)
+
+[node name="PlayLabel" type="Label" parent="UI"]
+mouse_filter = 2
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -160
+offset_right = 160
+offset_top = -160
+offset_bottom = -94
+theme_override_font_sizes/font_size = 32
+horizontal_alignment = 1
+text = "Play"
+
+[node name="EditorButton" type="Control" parent="UI"]
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -64
+offset_right = 64
+offset_top = -20
+offset_bottom = 108
+script = ExtResource("2")
+icon = 0
+glow_color = Color(0.5, 0.75, 1, 1)
+
+[node name="EditorLabel" type="Label" parent="UI"]
+mouse_filter = 2
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -200
+offset_right = 200
+offset_top = 120
+offset_bottom = 186
+theme_override_font_sizes/font_size = 32
+horizontal_alignment = 1
+text = "Map Editor"
+
+[node name="StatusLabel" type="Label" parent="UI"]
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -260
+offset_right = 260
+offset_top = 200
+offset_bottom = 260
+theme_override_font_sizes/font_size = 26
+horizontal_alignment = 1
+autowrap_mode = 2
+text = ""
+
+[node name="QuitButton" type="Control" parent="UI"]
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -64
+offset_right = 64
+offset_top = 320
+offset_bottom = 448
+script = ExtResource("2")
+icon = 1
+glow_color = Color(0.9, 0.35, 0.35, 1)
+
+[node name="QuitLabel" type="Label" parent="UI"]
+mouse_filter = 2
+anchor_left = 0.5
+anchor_right = 0.5
+anchor_top = 0.5
+anchor_bottom = 0.5
+offset_left = -160
+offset_right = 160
+offset_top = 460
+offset_bottom = 526
+theme_override_font_sizes/font_size = 32
+horizontal_alignment = 1
+text = "Quit"

project.godot

@@ -11,7 +11,7 @@ config_version=5
 [application]
 
 config/name="Spaceship Test"
-run/main_scene="res://Main.tscn"
+run/main_scene="res://MainMenu.tscn"
 config/features=PackedStringArray("4.7")
 config/icon="res://icon.svg"
 

tests/test_main_menu.gd

@@ -0,0 +1,95 @@
+extends SceneTree
+
+# Headless gameplay test: run with
+#   godot --headless -s res://tests/test_main_menu.gd
+# Verifies:
+#   1. the menu loads with Play/Map Editor/Quit, the editor button starts
+#      disabled and explains itself instead of silently doing nothing
+#   2. Quit's visibility follows OS.has_feature("web") (this platform is
+#      not a web export, so this run exercises the "visible" branch; the
+#      condition itself is what's under test, not the concrete boolean)
+#   3. Play resets GameState to a fresh game AND reaches Main.tscn
+
+var menu: Node
+var game_state: Node
+var elapsed: float = 0.0
+var stage: int = 0
+
+
+func _initialize() -> void:
+	game_state = root.get_node("GameState")
+	menu = load("res://MainMenu.tscn").instantiate()
+	root.add_child(menu)
+	current_scene = menu
+
+
+func _process(delta: float) -> bool:
+	elapsed += delta
+	match stage:
+		0:
+			# A scene added to the tree inside _initialize() has not had its
+			# _ready() flushed yet - see test_planet_setups.gd for the same
+			# hazard - so the menu's @onready buttons aren't valid until a
+			# frame has actually processed.
+			if elapsed < 0.1:
+				return false
+			if menu.editor_button.enabled:
+				return _fail("map editor button is not disabled ahead of #48")
+			if menu.quit_button.visible != (not OS.has_feature("web")):
+				return _fail("quit button visibility did not follow OS.has_feature('web')")
+
+			_press(menu.editor_button)
+			elapsed = 0.0
+			stage = 1
+			return false
+		1:
+			if elapsed < 0.1:
+				return false
+			if "coming soon" not in menu.status_label.text.to_lower():
+				return _fail("disabled editor button press did not explain itself")
+			if current_scene != menu:
+				return _fail("pressing the disabled editor button changed scenes")
+
+			# Dirty the game state exactly like an in-progress run would,
+			# so a genuine reset is distinguishable from a coincidental match.
+			game_state.bank_inventory.set_amount(GameState.RESOURCE_ORE, 999)
+			game_state.add_building(GameState.BUILDING_MOTHERSHIP, Vector2.ZERO)
+			game_state.surviving_ship_count = 1
+			game_state.planet_capture["chunk:1:1"] = {"captured": [true], "conquered": true}
+
+			_press(menu.play_button)
+			elapsed = 0.0
+			stage = 2
+			return false
+		2:
+			if elapsed < 0.3:
+				return false
+			var on_main: bool = current_scene != null and current_scene.name == "Main"
+			var reset_ok: bool = game_state.rocks == 500 and game_state.buildings.is_empty() \
+				and game_state.surviving_ship_count == GameState.BASE_FLEET_SIZE \
+				and game_state.planet_capture.is_empty()
+			print("on_main=%s reset_ok=%s rocks=%d buildings=%d ship_count=%d" % [
+				on_main, reset_ok, game_state.rocks, game_state.buildings.size(),
+				game_state.surviving_ship_count
+			])
+			if not on_main or not reset_ok:
+				return _fail("Play did not reset to a fresh game before reaching Main.tscn")
+			print("TEST_MAIN_MENU: PASS")
+			quit(0)
+			return true
+	return false
+
+
+func _press(button: IconButton) -> void:
+	var down: InputEventScreenTouch = InputEventScreenTouch.new()
+	down.pressed = true
+	button._gui_input(down)
+	var up: InputEventScreenTouch = InputEventScreenTouch.new()
+	up.pressed = false
+	button._gui_input(up)
+
+
+func _fail(message: String) -> bool:
+	print("TEST_MAIN_MENU: FAIL (%s)" % message)
+	quit(1)
+	return true

tests/test_main_menu.gd.uid

@@ -0,0 +1 @@
+uid://dgf2ichdb7d4j