Initial commit: SpaceshipTest, a top-down space RTS in Godot 4.7.1

A fleet of neon-outlined ships explores a procedurally generated, seeded
infinite world: tap/joystick steering, pinch zoom, formation pivoting,
planet landings, an ore economy with extractors and haulers, and player
built structures (mothership, ship crafter, command centre).

All art is hand-drawn with draw_* calls rather than textures, and the
backgrounds are camera-relative shaders so they stay precise at large
world coordinates.

Includes a 35-test headless suite (tests/run_tests.sh) plus screenshot
tooling that renders real frames through Xvfb and Mesa softpipe, since
--headless has no GPU.

Excluded from version control: .godot/ (import cache, and it holds
export credentials), builds/, android/build/ and packaged APKs - all
regenerable, and ~325 MB combined.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

PlanetSurface.tscn

@@ -0,0 +1,172 @@
+[gd_scene load_steps=11 format=3]
+
+[ext_resource type="Script" path="res://GameController.gd" id="1"]
+[ext_resource type="Script" path="res://LunarBackground.gd" id="2"]
+[ext_resource type="Shader" path="res://lunar_surface.gdshader" id="3"]
+[ext_resource type="Script" path="res://Fleet.gd" id="4"]
+[ext_resource type="Script" path="res://PlanetSurfaceController.gd" id="5"]
+[ext_resource type="Script" path="res://IconButton.gd" id="6"]
+[ext_resource type="Script" path="res://TouchJoystick.gd" id="7"]
+[ext_resource type="Script" path="res://RockField.gd" id="8"]
+[ext_resource type="Script" path="res://ResourceCounter.gd" id="9"]
+
+[sub_resource type="ShaderMaterial" id="1"]
+shader = ExtResource("3")
+shader_parameter/camera_pos = Vector2(0, 0)
+shader_parameter/camera_zoom = 1.0
+shader_parameter/viewport_size = Vector2(720, 1280)
+shader_parameter/cell_size = 220.0
+shader_parameter/base_color = Color(0.75, 0.75, 0.76, 1)
+shader_parameter/crater_color = Color(0.44, 0.44, 0.45, 1)
+shader_parameter/highlight_color = Color(0.89, 0.89, 0.9, 1)
+
+[node name="PlanetSurface" type="Node2D"]
+script = ExtResource("1")
+
+[node name="BackgroundLayer" type="CanvasLayer" parent="."]
+layer = -10
+
+[node name="LunarBackground" 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
+script = ExtResource("2")
+
+[node name="Fleet" type="Node2D" parent="."]
+script = ExtResource("4")
+ship_glow_color = Color(0.06, 0.32, 0.5, 1)
+ship_core_color = Color(0.02, 0.09, 0.15, 1)
+
+[node name="Camera2D" type="Camera2D" parent="."]
+position = Vector2(0, 0)
+zoom = Vector2(1, 1)
+
+[node name="RockField" type="Node2D" parent="."]
+script = ExtResource("8")
+
+[node name="SurfaceController" type="Node2D" parent="."]
+script = ExtResource("5")
+
+[node name="UI" type="CanvasLayer" parent="."]
+layer = 1
+
+[node name="ResourceCounter" type="Control" parent="UI"]
+mouse_filter = 2
+offset_left = 28
+offset_top = 24
+offset_right = 520
+offset_bottom = 140
+script = ExtResource("9")
+digit_height = 100.0
+glow_color = Color(0, 0.42, 0.48, 1)
+core_color = Color(0, 0.08, 0.1, 1)
+
+[node name="PlanetNameLabel" type="Label" parent="UI"]
+offset_left = 24
+offset_top = 156
+offset_right = 696
+offset_bottom = 282
+text = ""
+horizontal_alignment = 1
+theme_override_colors/font_color = Color(0.08, 0.08, 0.11, 1)
+theme_override_colors/font_outline_color = Color(0.95, 0.95, 0.96, 0.85)
+theme_override_constants/outline_size = 5
+
+[node name="ExitButton" type="Control" parent="UI"]
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_left = 24
+offset_right = 172
+offset_top = -720
+offset_bottom = -572
+script = ExtResource("6")
+icon = 4
+glow_color = Color(0.06, 0.32, 0.5, 1)
+core_color = Color(0.02, 0.09, 0.15, 1)
+
+[node name="KeyboardHintLabel" type="Label" parent="UI"]
+visible = false
+mouse_filter = 2
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_left = 28
+offset_right = 360
+offset_top = -300
+offset_bottom = -120
+theme_override_font_sizes/font_size = 36
+autowrap_mode = 2
+text = "WASD / arrows  move      Q / E  pivot      wheel  zoom"
+
+[node name="Joystick" type="Control" parent="UI"]
+mouse_filter = 2
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_left = 24
+offset_right = 424
+offset_top = -424
+offset_bottom = -24
+script = ExtResource("7")
+glow_color = Color(0.06, 0.32, 0.5, 1)
+core_color = Color(0.02, 0.09, 0.15, 1)
+
+[node name="PivotCCWButton" type="Control" parent="UI"]
+mouse_filter = 2
+anchor_left = 1.0
+anchor_right = 1.0
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_left = -344
+offset_right = -196
+offset_top = -172
+offset_bottom = -24
+script = ExtResource("6")
+icon = 7
+glow_color = Color(0.06, 0.32, 0.5, 1)
+core_color = Color(0.02, 0.09, 0.15, 1)
+
+[node name="PivotCWButton" type="Control" parent="UI"]
+mouse_filter = 2
+anchor_left = 1.0
+anchor_right = 1.0
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_left = -172
+offset_right = -24
+offset_top = -172
+offset_bottom = -24
+script = ExtResource("6")
+icon = 6
+glow_color = Color(0.06, 0.32, 0.5, 1)
+core_color = Color(0.02, 0.09, 0.15, 1)
+
+[node name="NavLabel" type="Label" parent="UI"]
+mouse_filter = 2
+anchor_left = 1.0
+anchor_right = 1.0
+anchor_top = 1.0
+anchor_bottom = 1.0
+offset_left = -344
+offset_right = -24
+offset_top = -322
+offset_bottom = -196
+text = "Pivot"
+theme_override_colors/font_color = Color(0.08, 0.08, 0.11, 1)
+theme_override_colors/font_outline_color = Color(0.95, 0.95, 0.96, 0.85)
+theme_override_constants/outline_size = 5
+horizontal_alignment = 1
+
+[node name="FadeOverlay" type="CanvasLayer" parent="."]
+layer = 10
+
+[node name="FadeRect" type="ColorRect" parent="FadeOverlay"]
+mouse_filter = 2
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+color = Color(0, 0, 0, 1)