Bounded grid generation layers check distance from plane before generation

Arcology terrace metro generation
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2025-10-04 18:23:25 -06:00 · 2025-10-04 18:05:52 -06:00 · 2025-10-04 17:47:02 -06:00 · 2025-10-04 17:03:13 -06:00 · 2025-10-04 16:51:48 -06:00 · 2025-10-03 18:46:17 -06:00
76 changed files with 1519 additions and 124 deletions
--- a/addons/debug_draw_3d/LICENSE
+++ b/addons/debug_draw_3d/LICENSE
@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2024 DmitriySalnikov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the Software), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, andor sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/addons/debug_draw_3d/README.md
+++ b/addons/debug_draw_3d/README.md
@ -0,0 +1,157 @@
+![icon](/images/icon_3d_128.png)
+
+# Debug drawing utility for Godot
+
+This is an add-on for debug drawing in 3D and for some 2D overlays, which is written in `C++` and can be used with `GDScript` or `C#`.
+
+Based on my previous addon, which was developed [only for C#](https://github.com/DmitriySalnikov/godot_debug_draw_cs), and which was inspired by [Zylann's GDScript addon](https://github.com/Zylann/godot_debug_draw)
+
+## [Documentation](https://dd3d.dmitriysalnikov.ru/docs/)
+
+## [Godot 3 version](https://github.com/DmitriySalnikov/godot_debug_draw_3d/tree/godot_3)
+
+## Support me
+
+Your support adds motivation to develop my public projects.
+
+<a href="https://boosty.to/dmitriysalnikov/donate"><img src="/docs/images/boosty.png" alt="Boosty" width=150px/></a>
+
+<a href="#"><img src="/docs/images/USDT-TRC20.png" alt="USDT-TRC20" width=150px/></a>
+
+<b>USDT-TRC20 TEw934PrsffHsAn5M63SoHYRuZo984EF6v</b>
+
+## Features
+
+3D:
+
+* Arrow
+* Billboard opaque square
+* Box
+* Camera Frustum
+* Cylinder
+* Gizmo
+* Grid
+* Line
+* Line Path
+* Line with Arrow
+* Plane
+* Points
+* Position 3D (3 crossing axes)
+* Sphere
+* 3D Text
+
+2D:
+
+* **[Work in progress]**
+
+Overlay:
+
+* Text (with grouping and coloring)
+
+Precompiled for:
+
+* Windows
+* Linux (built on Ubuntu 22.04)
+* macOS (10.15+)
+* Android (5.0+)
+* iOS
+* Web (Firefox is supported by Godot 4.3+)
+
+This addon supports working with several World3D and different Viewports.
+There is also a no depth test mode and other settings that can be changed for each instance.
+
+This library supports double-precision builds, for more information, [see the documentation](https://dd3d.dmitriysalnikov.ru/docs/?page=md_docs_2DoublePrecision.html).
+
+## [Interactive Web Demo](https://dd3d.dmitriysalnikov.ru/demo/)
+
+[![screenshot_web](/images/screenshot_web.png)](https://dd3d.dmitriysalnikov.ru/demo/)
+
+## Download
+
+To download, use the [Godot Asset Library](https://godotengine.org/asset-library/asset/1766) or use one of the stable versions from the [GitHub Releases](https://github.com/DmitriySalnikov/godot_debug_draw_3d/releases) page.
+
+For versions prior to `1.4.5`, just download one of the `source codes` in the assets. For newer versions, download `debug-draw-3d_[version].zip`.
+
+### Installation
+
+* Close editor
+* Copy `addons/debug_draw_3d` to your `addons` folder, create it if the folder doesn't exist
+* Launch editor
+
+## Examples
+
+More examples can be found in the `examples_dd3d/` folder.
+
+Simple test:
+
+```gdscript
+func _process(delta: float) -> void:
+    var _time = Time.get_ticks_msec() / 1000.0
+    var box_pos = Vector3(0, sin(_time * 4), 0)
+    var line_begin = Vector3(-1, sin(_time * 4), 0)
+    var line_end = Vector3(1, cos(_time * 4), 0)
+
+    DebugDraw3D.draw_box(box_pos, Quaternion.IDENTITY, Vector3(1, 2, 1), Color(0, 1, 0))
+    DebugDraw3D.draw_line(line_begin, line_end, Color(1, 1, 0))
+    DebugDraw2D.set_text("Time", _time)
+    DebugDraw2D.set_text("Frames drawn", Engine.get_frames_drawn())
+    DebugDraw2D.set_text("FPS", Engine.get_frames_per_second())
+    DebugDraw2D.set_text("delta", delta)
+```
+
+![screenshot_1](/images/screenshot_1.png)
+
+An example of using scoped configs:
+
+```gdscript
+@tool
+extends Node3D
+
+func _ready():
+    # Set the base scoped_config.
+    # Each frame will be reset to these scoped values.
+    DebugDraw3D.scoped_config().set_thickness(0.1).set_center_brightness(0.6)
+
+func _process(delta):
+    # Draw using the base scoped config.
+    DebugDraw3D.draw_box(Vector3.ZERO, Quaternion.IDENTITY, Vector3.ONE * 2, Color.CORNFLOWER_BLUE)
+    if true:
+        # Create a scoped config that will exist until exiting this if.
+        var _s = DebugDraw3D.new_scoped_config().set_thickness(0).set_center_brightness(0.1)
+        # Draw with a thickness of 0
+        DebugDraw3D.draw_box(Vector3.ZERO, Quaternion.IDENTITY, Vector3.ONE, Color.RED)
+        # If necessary, the values inside this scope can be changed
+        # even before each call to draw_*.
+        _s.set_thickness(0.05)
+        DebugDraw3D.draw_box(Vector3(1,0,1), Quaternion.IDENTITY, Vector3.ONE * 1, Color.BLUE_VIOLET)
+```
+
+![screenshot_5](/images/screenshot_5.png)
+
+> [!TIP]
+>
+> If you want to use a non-standard Viewport for rendering a 3d scene, then do not forget to specify it in the scoped config!
+
+## API
+
+This project has a separate [documentation](https://dd3d.dmitriysalnikov.ru/docs/) page.
+
+Also, a list of all functions is available in the documentation inside the editor (see `DebugDraw3D` and `DebugDraw2D`).
+
+![screenshot_4](/images/screenshot_4.png)
+
+## Known issues and limitations
+
+The text in the keys and values of a text group cannot contain multi-line strings.
+
+The entire text overlay can only be placed in one corner.
+
+[Frustum of Camera3D does not take into account the window size from ProjectSettings](https://github.com/godotengine/godot/issues/70362).
+
+## More screenshots
+
+`DebugDrawDemoScene.tscn` in editor
+![screenshot_2](/images/screenshot_2.png)
+
+`DebugDrawDemoScene.tscn` in play mode
+![screenshot_3](/images/screenshot_3.png)
--- a/addons/debug_draw_3d/debug_draw_3d.gdextension
+++ b/addons/debug_draw_3d/debug_draw_3d.gdextension
@ -0,0 +1,153 @@
+[configuration]
+
+entry_symbol = "debug_draw_3d_library_init"
+compatibility_minimum = "4.2.2"
+reloadable = false
+
+[dependencies]
+
+; example.x86_64 = { "relative or absolute path to the dependency" : "the path relative to the exported project", }
+; -------------------------------------
+; debug
+
+macos = { }
+windows.x86_64 = { }
+linux.x86_64 = { }
+
+; by default godot is using threads
+web.wasm32.nothreads = {}
+web.wasm32 = {}
+
+android.arm32 = { }
+android.arm64 = { }
+android.x86_32 = { }
+android.x86_64 = { }
+
+ios = {}
+
+; -------------------------------------
+; release no debug draw
+
+macos.template_release = { }
+windows.template_release.x86_64 = { }
+linux.template_release.x86_64 = { }
+
+web.template_release.wasm32.nothreads = { }
+web.template_release.wasm32 = { }
+
+android.template_release.arm32 = { }
+android.template_release.arm64 = { }
+android.template_release.x86_32 = { }
+android.template_release.x86_64 = { }
+
+ios.template_release = {}
+
+; -------------------------------------
+; release forced debug draw
+
+macos.template_release.forced_dd3d = { }
+windows.template_release.x86_64.forced_dd3d = { }
+linux.template_release.x86_64.forced_dd3d = { }
+
+web.template_release.wasm32.nothreads.forced_dd3d = { }
+web.template_release.wasm32.forced_dd3d = { }
+
+ios.template_release.forced_dd3d = {}
+
+[libraries]
+
+; -------------------------------------
+; debug
+
+macos = "libs/libdd3d.macos.editor.universal.framework"
+windows.x86_64 = "libs/libdd3d.windows.editor.x86_64.dll"
+linux.x86_64 = "libs/libdd3d.linux.editor.x86_64.so"
+
+web.wasm32.nothreads = "libs/libdd3d.web.template_debug.wasm32.wasm"
+web.wasm32 = "libs/libdd3d.web.template_debug.wasm32.threads.wasm"
+
+android.arm32 = "libs/libdd3d.android.template_debug.arm32.so"
+android.arm64 = "libs/libdd3d.android.template_debug.arm64.so"
+android.x86_32 = "libs/libdd3d.android.template_debug.x86_32.so"
+android.x86_64 = "libs/libdd3d.android.template_debug.x86_64.so"
+
+ios = "libs/libdd3d.ios.template_debug.universal.dylib"
+
+; -------------------------------------
+; release no debug draw
+
+macos.template_release = "libs/libdd3d.macos.template_release.universal.framework"
+windows.template_release.x86_64 = "libs/libdd3d.windows.template_release.x86_64.dll"
+linux.template_release.x86_64 = "libs/libdd3d.linux.template_release.x86_64.so"
+
+web.template_release.wasm32.nothreads = "libs/libdd3d.web.template_release.wasm32.wasm"
+web.template_release.wasm32 = "libs/libdd3d.web.template_release.wasm32.threads.wasm"
+
+android.template_release.arm32 = "libs/libdd3d.android.template_release.arm32.so"
+android.template_release.arm64 = "libs/libdd3d.android.template_release.arm64.so"
+android.template_release.x86_32 = "libs/libdd3d.android.template_release.x86_32.so"
+android.template_release.x86_64 = "libs/libdd3d.android.template_release.x86_64.so"
+
+ios.template_release = "libs/libdd3d.ios.template_release.universal.dylib"
+
+; -------------------------------------
+; release forced debug draw
+
+macos.template_release.forced_dd3d = "libs/libdd3d.macos.template_release.universal.enabled.framework"
+windows.template_release.x86_64.forced_dd3d = "libs/libdd3d.windows.template_release.x86_64.enabled.dll"
+linux.template_release.x86_64.forced_dd3d = "libs/libdd3d.linux.template_release.x86_64.enabled.so"
+
+web.template_release.wasm32.nothreads.forced_dd3d = "libs/libdd3d.web.template_release.wasm32.enabled.wasm"
+web.template_release.wasm32.forced_dd3d = "libs/libdd3d.web.template_release.wasm32.threads.enabled.wasm"
+
+ios.template_release.forced_dd3d = "libs/libdd3d.ios.template_release.universal.enabled.dylib"
+
+; -------------------------------------
+; DOUBLE PRECISION
+; -------------------------------------
+
+; -------------------------------------
+; debug
+
+macos.double = "libs/libdd3d.macos.editor.universal.double.framework"
+windows.x86_64.double = "libs/libdd3d.windows.editor.x86_64.double.dll"
+linux.x86_64.double = "libs/libdd3d.linux.editor.x86_64.double.so"
+
+web.wasm32.nothreads.double = "libs/libdd3d.web.template_debug.wasm32.double.wasm"
+web.wasm32.double = "libs/libdd3d.web.template_debug.wasm32.threads.double.wasm"
+
+android.arm32.double = "libs/libdd3d.android.template_debug.arm32.double.so"
+android.arm64.double = "libs/libdd3d.android.template_debug.arm64.double.so"
+android.x86_32.double = "libs/libdd3d.android.template_debug.x86_32.double.so"
+android.x86_64.double = "libs/libdd3d.android.template_debug.x86_64.double.so"
+
+ios.double = "libs/libdd3d.ios.template_debug.universal.dylib"
+
+; -------------------------------------
+; release no debug draw
+
+macos.template_release.double = "libs/libdd3d.macos.template_release.universal.double.framework"
+windows.template_release.x86_64.double = "libs/libdd3d.windows.template_release.x86_64.double.dll"
+linux.template_release.x86_64.double = "libs/libdd3d.linux.template_release.x86_64.double.so"
+
+web.template_release.wasm32.nothreads.double = "libs/libdd3d.web.template_release.wasm32.double.wasm"
+web.template_release.wasm32.double = "libs/libdd3d.web.template_release.wasm32.threads.double.wasm"
+
+android.template_release.arm32.double = "libs/libdd3d.android.template_release.arm32.double.so"
+android.template_release.arm64.double = "libs/libdd3d.android.template_release.arm64.double.so"
+android.template_release.x86_32.double = "libs/libdd3d.android.template_release.x86_32.double.so"
+android.template_release.x86_64.double = "libs/libdd3d.android.template_release.x86_64.double.so"
+
+ios.template_release.double = "libs/libdd3d.ios.template_release.universal.double.dylib"
+
+; -------------------------------------
+; release forced debug draw
+
+macos.template_release.forced_dd3d.double = "libs/libdd3d.macos.template_release.universal.enabled.double.framework"
+windows.template_release.x86_64.forced_dd3d.double = "libs/libdd3d.windows.template_release.x86_64.enabled.double.dll"
+linux.template_release.x86_64.forced_dd3d.double = "libs/libdd3d.linux.template_release.x86_64.enabled.double.so"
+
+web.template_release.wasm32.nothreads.forced_dd3d.double = "libs/libdd3d.web.template_release.wasm32.enabled.double.wasm"
+web.template_release.wasm32.forced_dd3d.double = "libs/libdd3d.web.template_release.wasm32.threads.enabled.double.wasm"
+
+ios.template_release.forced_dd3d.double = "libs/libdd3d.ios.template_release.universal.enabled.double.dylib"
--- a/addons/debug_draw_3d/debug_draw_3d.gdextension.uid
+++ b/addons/debug_draw_3d/debug_draw_3d.gdextension.uid
@ -0,0 +1 @@
+uid://svqaxfp5kyrl
--- a/addons/debug_draw_3d/libs/.gdignore
+++ b/addons/debug_draw_3d/libs/.gdignore
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_debug.arm32.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_debug.arm32.so
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_debug.arm64.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_debug.arm64.so
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_debug.x86_32.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_debug.x86_32.so
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_debug.x86_64.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_debug.x86_64.so
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_release.arm32.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_release.arm32.so
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_release.arm64.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_release.arm64.so
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_release.x86_32.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_release.x86_32.so
--- a/addons/debug_draw_3d/libs/libdd3d.android.template_release.x86_64.so
+++ b/addons/debug_draw_3d/libs/libdd3d.android.template_release.x86_64.so
--- a/addons/debug_draw_3d/libs/libdd3d.ios.template_debug.universal.dylib
+++ b/addons/debug_draw_3d/libs/libdd3d.ios.template_debug.universal.dylib
--- a/addons/debug_draw_3d/libs/libdd3d.ios.template_release.universal.dylib
+++ b/addons/debug_draw_3d/libs/libdd3d.ios.template_release.universal.dylib
--- a/addons/debug_draw_3d/libs/libdd3d.ios.template_release.universal.enabled.dylib
+++ b/addons/debug_draw_3d/libs/libdd3d.ios.template_release.universal.enabled.dylib
--- a/addons/debug_draw_3d/libs/libdd3d.linux.editor.x86_64.so
+++ b/addons/debug_draw_3d/libs/libdd3d.linux.editor.x86_64.so
--- a/addons/debug_draw_3d/libs/libdd3d.linux.template_release.x86_64.enabled.so
+++ b/addons/debug_draw_3d/libs/libdd3d.linux.template_release.x86_64.enabled.so
--- a/addons/debug_draw_3d/libs/libdd3d.linux.template_release.x86_64.so
+++ b/addons/debug_draw_3d/libs/libdd3d.linux.template_release.x86_64.so
--- a/addons/debug_draw_3d/libs/libdd3d.macos.editor.universal.framework/Resources/Info.plist
+++ b/addons/debug_draw_3d/libs/libdd3d.macos.editor.universal.framework/Resources/Info.plist
@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>libdd3d.macos.editor.universal.dylib</string>
+	<key>CFBundleName</key>
+	<string>Debug Draw 3D</string>
+	<key>CFBundleDisplayName</key>
+	<string>Debug Draw 3D</string>
+	<key>CFBundleIdentifier</key>
+	<string>ru.dmitriysalnikov.dd3d</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright (c) Dmitriy Salnikov.</string>
+	<key>CFBundleVersion</key>
+	<string>1.5.1</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.5.1</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+	<key>DTPlatformName</key>
+	<string>macosx</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.14</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
+</dict>
+</plist>
+    
--- a/addons/debug_draw_3d/libs/libdd3d.macos.editor.universal.framework/libdd3d.macos.editor.universal.dylib
+++ b/addons/debug_draw_3d/libs/libdd3d.macos.editor.universal.framework/libdd3d.macos.editor.universal.dylib
--- a/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.enabled.framework/Resources/Info.plist
+++ b/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.enabled.framework/Resources/Info.plist
@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>libdd3d.macos.template_release.universal.enabled.dylib</string>
+	<key>CFBundleName</key>
+	<string>Debug Draw 3D</string>
+	<key>CFBundleDisplayName</key>
+	<string>Debug Draw 3D</string>
+	<key>CFBundleIdentifier</key>
+	<string>ru.dmitriysalnikov.dd3d</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright (c) Dmitriy Salnikov.</string>
+	<key>CFBundleVersion</key>
+	<string>1.5.1</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.5.1</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+	<key>DTPlatformName</key>
+	<string>macosx</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.14</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
+</dict>
+</plist>
+    
--- a/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.enabled.framework/libdd3d.macos.template_release.universal.enabled.dylib
+++ b/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.enabled.framework/libdd3d.macos.template_release.universal.enabled.dylib
--- a/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.framework/Resources/Info.plist
+++ b/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.framework/Resources/Info.plist
@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>libdd3d.macos.template_release.universal.dylib</string>
+	<key>CFBundleName</key>
+	<string>Debug Draw 3D</string>
+	<key>CFBundleDisplayName</key>
+	<string>Debug Draw 3D</string>
+	<key>CFBundleIdentifier</key>
+	<string>ru.dmitriysalnikov.dd3d</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright (c) Dmitriy Salnikov.</string>
+	<key>CFBundleVersion</key>
+	<string>1.5.1</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.5.1</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+	<key>DTPlatformName</key>
+	<string>macosx</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>10.14</string>
+	<key>CFBundleSupportedPlatforms</key>
+	<array>
+		<string>MacOSX</string>
+	</array>
+</dict>
+</plist>
+    
--- a/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.framework/libdd3d.macos.template_release.universal.dylib
+++ b/addons/debug_draw_3d/libs/libdd3d.macos.template_release.universal.framework/libdd3d.macos.template_release.universal.dylib
--- a/addons/debug_draw_3d/libs/libdd3d.web.template_debug.wasm32.threads.wasm
+++ b/addons/debug_draw_3d/libs/libdd3d.web.template_debug.wasm32.threads.wasm
--- a/addons/debug_draw_3d/libs/libdd3d.web.template_debug.wasm32.wasm
+++ b/addons/debug_draw_3d/libs/libdd3d.web.template_debug.wasm32.wasm
--- a/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.enabled.wasm
+++ b/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.enabled.wasm
--- a/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.threads.enabled.wasm
+++ b/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.threads.enabled.wasm
--- a/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.threads.wasm
+++ b/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.threads.wasm
--- a/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.wasm
+++ b/addons/debug_draw_3d/libs/libdd3d.web.template_release.wasm32.wasm
--- a/addons/debug_draw_3d/libs/libdd3d.windows.editor.x86_64.dll
+++ b/addons/debug_draw_3d/libs/libdd3d.windows.editor.x86_64.dll
--- a/addons/debug_draw_3d/libs/libdd3d.windows.template_release.x86_64.dll
+++ b/addons/debug_draw_3d/libs/libdd3d.windows.template_release.x86_64.dll
--- a/addons/debug_draw_3d/libs/libdd3d.windows.template_release.x86_64.enabled.dll
+++ b/addons/debug_draw_3d/libs/libdd3d.windows.template_release.x86_64.enabled.dll
--- a/assets/materials/shaders/fractal_steel.gdshader
+++ b/assets/materials/shaders/fractal_steel.gdshader
@ -0,0 +1,103 @@
+// Voronoi fractal steel material
+// Based on https://www.shadertoy.com/view/4sl3Dr
+shader_type spatial;
+
+uniform vec2 uv_scale = vec2(1.0);
+uniform float edge_sharpness = 0.25;
+
+uniform vec3 base_color: source_color = vec3(1.0);
+
+uniform int octaves = 3;
+
+uniform float octave_dropoff = 0.7;
+uniform float octave_scale = 3.0;
+
+
+uniform float metallic = 1.0;
+uniform float roughness_scale = 1.0;
+uniform float bump_strength = 1.0;
+
+// 1D random numbers
+float rand(float n)
+{
+    return fract(sin(n) * 43758.5453123374897);
+}
+
+// 2D random numbers
+vec2 rand2(vec2 p)
+{
+	return fract(vec2(sin(p.x * 591.32 + p.y * 154.077), cos(p.x * 391.32 + p.y * 49.077)));
+}
+
+// 1D noise
+float noise1(float p)
+{
+	float fl = floor(p);
+	float fc = fract(p);
+	return mix(rand(fl), rand(fl + 1.0), fc);
+}
+
+// voronoi distance noise, based on iq's articles
+float voronoi(vec2 x)
+{
+	vec2 p = floor(x);
+	vec2 f = fract(x);
+	
+	vec2 res = vec2(8.0);
+	for(float j = -1.0; j <= 1.0; j ++)
+	{
+		for(float i = -1.0; i <= 1.0; i ++)
+		{
+			vec2 b = vec2(i, j);
+			vec2 r = vec2(b) - f + rand2(p + b);
+			
+			// chebyshev distance, one of many ways to do this
+			float d = max(abs(r.x), abs(r.y));
+			
+			if(d < res.x)
+			{
+				res.y = res.x;
+				res.x = d;
+			}
+			else if(d < res.y)
+			{
+				res.y = d;
+			}
+		}
+	}
+	return res.y - res.x;
+}
+
+void fragment() {
+	vec2 uv = (UV - 0.5) * 2.0 * uv_scale;
+	
+	float value = 0.0;
+	
+	// Octaves
+	float a = 0.6;
+	float f = 1.0;
+	for(int i = 0; i < octaves; i++) {
+		float v1 = voronoi(uv * f + 5.0);
+		float v2 = 0.0;
+		
+		// Sharp edges
+		v1 = 1.0 - smoothstep(0.0, edge_sharpness, v1);
+		// noise as intensity map
+		v2 = a * (noise1(v1 * 5.5 + 0.1));
+		
+		value += v2;
+		
+		f *= octave_scale;
+		a *= octave_dropoff;
+	}
+	
+	// Use value as bump map
+	float dZ = 1.0 / bump_strength;
+	vec3 nmap = normalize(vec3(dFdx(value), dFdy(value), dZ));
+	NORMAL_MAP = nmap / 2.0 + 1.0;
+	
+	
+	ALBEDO = value * base_color;
+	ROUGHNESS = value * roughness_scale;
+	METALLIC = metallic;
+}
--- a/assets/materials/shaders/fractal_steel.gdshader.uid
+++ b/assets/materials/shaders/fractal_steel.gdshader.uid
@ -0,0 +1 @@
+uid://c0gt2lo07w7w
--- a/assets/materials/shaders/fractal_steel.material
+++ b/assets/materials/shaders/fractal_steel.material
--- a/assets/materials/shaders/megalith_base.material
+++ b/assets/materials/shaders/megalith_base.material
--- a/assets/materials/shaders/megalith_interior.material
+++ b/assets/materials/shaders/megalith_interior.material
--- a/project.godot
+++ b/project.godot
@ -27,11 +27,15 @@ gdscript/warnings/unsafe_method_access=2
 gdscript/warnings/unsafe_cast=1
 gdscript/warnings/unsafe_call_argument=2

+[debug_draw_3d]
+
+settings/addon_root_folder="res://addons/debug_draw_3d"
+settings/updates/check_for_updates=false
+
 [display]

 window/size/viewport_width=1920
 window/size/viewport_height=1080
-window/vsync/vsync_mode=0

 [dotnet]

@ -132,19 +136,27 @@ debug_4={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194335,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
 ]
 }
+debug_speed_up={
+"deadzone": 0.2,
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":8,"position":Vector2(160, 1),"global_position":Vector2(169, 47),"factor":1.0,"button_index":4,"canceled":false,"pressed":true,"double_click":false,"script":null)
+]
+}
+debug_speed_down={
+"deadzone": 0.2,
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":16,"position":Vector2(145, 7),"global_position":Vector2(154, 53),"factor":1.0,"button_index":5,"canceled":false,"pressed":true,"double_click":false,"script":null)
+]
+}

 [layer_names]

-3d_render/layer_1="Global Noise Layer"
+3d_render/layer_1="High Detail"
+3d_render/layer_2="Medium Detail"
+3d_render/layer_3="Low Detail"
+3d_render/layer_10="Global Noise Layer"
 3d_physics/layer_1="World Geometry"
 3d_physics/layer_2="Player"
 3d_physics/layer_3="Layer 3"

 [rendering]

-lights_and_shadows/directional_shadow/size=8192
-lights_and_shadows/directional_shadow/soft_shadow_filter_quality=3
-lights_and_shadows/positional_shadow/soft_shadow_filter_quality=3
-anti_aliasing/quality/msaa_3d=3
 anti_aliasing/quality/screen_space_aa=1
-anti_aliasing/quality/use_debanding=true
--- a/src/player/movement/debug_movement.gd
+++ b/src/player/movement/debug_movement.gd
@ -2,17 +2,19 @@ class_name DebugMovement extends Node
 ## Movement controller for debug flight

 const ACCELERATION := 10.0
+const SPEED_SCALE_FACTOR := 1.2

@export var enabled := false

@export var normal_speed := 160.0
@export var fast_speed := 320.0
+@export var speed_scale := 1.0

@onready var character: CharacterBody3D = get_parent()


 func get_speed() -> float:
-	return fast_speed if Input.is_action_pressed("sprint") else normal_speed
+	return speed_scale * (fast_speed if Input.is_action_pressed("sprint") else normal_speed)


 func _physics_process(delta: float) -> void:
@ -30,3 +32,11 @@ func _physics_process(delta: float) -> void:
 	character.velocity = character.velocity.lerp(motion, weight)

 	character.move_and_slide()
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	if enabled:
+		if event.is_action_pressed("debug_speed_up"):
+			speed_scale *= SPEED_SCALE_FACTOR
+		elif event.is_action_pressed("debug_speed_down"):
+			speed_scale /= SPEED_SCALE_FACTOR
--- a/src/player/player.tscn
+++ b/src/player/player.tscn
@ -67,6 +67,7 @@ script = ExtResource("1_5f2sf")
 shape = SubResource("CapsuleShape3D_qnmj6")

 [node name="MeshInstance3D" type="MeshInstance3D" parent="."]
+layers = 7
 gi_mode = 0
 mesh = SubResource("CapsuleMesh_4anbu")

@ -94,11 +95,12 @@ rebound_time_curve = SubResource("Curve_ylhto")
 script = ExtResource("1_rxibo")
 priority = 1
 tween_resource = SubResource("Resource_244u8")
-noise_emitter_layer = 1
+noise_emitter_layer = 512
 metadata/_custom_type_script = "uid://csjccrhj5wnx7"

 [node name="MeshInstance3D" type="MeshInstance3D" parent="CameraOffset/CameraController/StrafeBankEffect/FallKickEffect/PhantomCamera3D"]
 transform = Transform3D(1, 0, 0, 0, -4.371139e-08, -1, 0, 1, -4.371139e-08, 0, 0, -0.45)
+layers = 7
 gi_mode = 0
 mesh = SubResource("CapsuleMesh_o822w")

@ -118,6 +120,8 @@ metadata/_custom_type_script = "uid://d11erhxna68vd"
 [node name="DebugMovement" type="Node" parent="."]
 unique_name_in_owner = true
 script = ExtResource("10_ylhto")
+normal_speed = 500.0
+fast_speed = 1000.0
 metadata/_custom_type_script = "uid://htwqrc73xg7q"

 [node name="DebugHUD" type="CanvasLayer" parent="." node_paths=PackedStringArray("player")]
--- a/src/util/auto_range.gd
+++ b/src/util/auto_range.gd
@ -0,0 +1,13 @@
+class_name AutoRange extends Node
+## Component that automatically adjusts the visibility range of its parent to match LOD bounds
+
+@export var lod: WorldGen.LOD
+@export_range(0.0, 1.0) var end_margin_pct := 0.05
+
+
+func _ready() -> void:
+	var target: GeometryInstance3D = get_parent()
+	target.visibility_range_end = WorldGenManager.get_lod_radius(lod)
+
+	target.visibility_range_end_margin = end_margin_pct * target.visibility_range_end
+	queue_free()
--- a/src/util/auto_range.gd.uid
+++ b/src/util/auto_range.gd.uid
@ -0,0 +1 @@
+uid://cv0o1lirqeq44
--- a/src/world/generation/chunk/chunk.gd
+++ b/src/world/generation/chunk/chunk.gd
@ -1,45 +0,0 @@
-class_name Chunk extends Node3D
-## A discrete generated chunk of the world
-
-const SIZE := Vector2(64, 64)
-const SCENE := preload("res://src/world/generation/chunk/chunk.tscn")
-
-@export var construct_offset := Vector2(0.1, 0.0)
-@export var construct_height_factor := 300.0
-@export var construct_height_threshold := 30.0
-
-
-func chunk_position() -> Vector2:
-	return Chunk.world_to_chunk(position)
-
-
-func generate() -> void:
-	# TODO: this
-	print_debug("Generating chunk at ", chunk_position())
-
-	# Let's generate a building...
-	var construct_noise := WorldGenManager.noise.get_noise_2dv(chunk_position() + construct_offset)
-	var construct_height := construct_noise * construct_height_factor
-	if construct_height > construct_height_threshold:
-		print_debug("GENERATING CONSTRUCT")
-		var construct := CSGBox3D.new()
-		add_child(construct)
-		construct.size = Vector3(60, construct_height, 60)
-		construct.position = Vector3(2, construct_height / 2, 2)
-		construct.collision_layer = 1
-		construct.use_collision = true
-
-
-static func chunk_to_world(chunk_pos: Vector2) -> Vector3:
-	return Vector3(chunk_pos.x * SIZE.x, 0, chunk_pos.y * SIZE.y)
-
-
-static func world_to_chunk(world_pos: Vector3) -> Vector2:
-	return Vector2(world_pos.x / SIZE.x, world_pos.z / SIZE.y)
-
-
-static func generate_chunk(chunk_pos: Vector2) -> Chunk:
-	var instance: Chunk = SCENE.instantiate()
-	instance.position = Chunk.chunk_to_world(chunk_pos)
-	instance.generate()
-	return instance
--- a/src/world/generation/chunk/chunk.gd.uid
+++ b/src/world/generation/chunk/chunk.gd.uid
@ -1 +0,0 @@
-uid://chqpqe4anvamd
--- a/src/world/generation/chunk/chunk.tscn
+++ b/src/world/generation/chunk/chunk.tscn
@ -1,23 +0,0 @@
-[gd_scene load_steps=4 format=3 uid="uid://crs68yhijqkca"]
-
-[ext_resource type="Script" uid="uid://chqpqe4anvamd" path="res://src/world/generation/chunk/chunk.gd" id="1_87ter"]
-
-[sub_resource type="PlaneMesh" id="PlaneMesh_0cma0"]
-size = Vector2(64, 64)
-subdivide_width = 64
-subdivide_depth = 64
-center_offset = Vector3(32, 0, 32)
-
-[sub_resource type="ConvexPolygonShape3D" id="ConvexPolygonShape3D_87ter"]
-points = PackedVector3Array(1.9073486e-06, 0, 1.9073486e-06, 1.9073486e-06, 0, 64, 64, 0, 1.9073486e-06, 64, 0, 64)
-
-[node name="Chunk" type="Node3D"]
-script = ExtResource("1_87ter")
-
-[node name="MeshInstance3D" type="MeshInstance3D" parent="."]
-mesh = SubResource("PlaneMesh_0cma0")
-
-[node name="StaticBody3D" type="StaticBody3D" parent="MeshInstance3D"]
-
-[node name="CollisionShape3D" type="CollisionShape3D" parent="MeshInstance3D/StaticBody3D"]
-shape = SubResource("ConvexPolygonShape3D_87ter")
--- a/src/world/generation/feature/arcology/arcology.tscn
+++ b/src/world/generation/feature/arcology/arcology.tscn
@ -0,0 +1,370 @@
+[gd_scene load_steps=11 format=3 uid="uid://nllc8ljmn37g"]
+
+[ext_resource type="Script" uid="uid://drk82eeqk2mjs" path="res://src/world/generation/feature/generation_feature.gd" id="1_ek7o7"]
+[ext_resource type="Material" uid="uid://0ja682cfcvu3" path="res://assets/materials/shaders/megalith_base.material" id="2_pko82"]
+[ext_resource type="Material" uid="uid://bjbctidts4k5b" path="res://assets/materials/shaders/megalith_interior.material" id="3_yw1ox"]
+[ext_resource type="PackedScene" uid="uid://cwygxhknl2h8r" path="res://src/world/generation/layer/metro_grid_layer/metro_grid_layer.tscn" id="4_fy7wq"]
+[ext_resource type="Script" uid="uid://cv0o1lirqeq44" path="res://src/util/auto_range.gd" id="4_kox75"]
+
+[sub_resource type="PlaneMesh" id="PlaneMesh_pko82"]
+size = Vector2(100000, 100000)
+
+[sub_resource type="ConcavePolygonShape3D" id="ConcavePolygonShape3D_ek7o7"]
+data = PackedVector3Array(50000, 0, 50000, -50000, 0, 50000, 50000, 0, -50000, -50000, 0, 50000, -50000, 0, -50000, 50000, 0, -50000)
+
+[sub_resource type="Curve" id="Curve_0w44q"]
+_limits = [1.0, 6.0, 0.0, 1.0]
+_data = [Vector2(0, 6), 0.0, -14.656702, 0, 0, Vector2(1, 1), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="Curve" id="Curve_amoo5"]
+_limits = [1.0, 20.0, 0.0, 1.0]
+_data = [Vector2(0, 1), 0.0, 0.0, 0, 0, Vector2(1, 20), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="Curve" id="Curve_kox75"]
+_limits = [0.0, 4.0, 0.0, 1.0]
+_data = [Vector2(0, 4), 0.0, 0.0, 0, 0]
+point_count = 1
+
+[node name="Arcology" type="Node3D"]
+script = ExtResource("1_ek7o7")
+metadata/_custom_type_script = "uid://drk82eeqk2mjs"
+
+[node name="InnerPyramid" type="CSGCylinder3D" parent="."]
+transform = Transform3D(0.70710677, 0, 0.70710677, 0, 1, 0, -0.70710677, 0, 0.70710677, 50000, 30000, 50000)
+layers = 4
+visibility_range_fade_mode = 1
+use_collision = true
+radius = 60000.0
+height = 60000.0
+sides = 4
+cone = true
+smooth_faces = false
+
+[node name="OuterPyramid" type="CSGCylinder3D" parent="InnerPyramid"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 5000, 0)
+layers = 4
+radius = 70000.0
+height = 70000.0
+sides = 4
+cone = true
+smooth_faces = false
+material = ExtResource("2_pko82")
+
+[node name="TopCutoff" type="CSGBox3D" parent="InnerPyramid/OuterPyramid"]
+transform = Transform3D(0.70710677, 0, -0.70710677, 0, 1, 0, 0.70710677, 0, 0.70710677, 0, 30000, 0)
+layers = 4
+operation = 2
+size = Vector3(100000, 80000, 100000)
+
+[node name="Slots" type="CSGCombiner3D" parent="InnerPyramid"]
+transform = Transform3D(0.70710677, 0, -0.70710677, 0, 1, 0, 0.70710677, 0, 0.70710677, 0, -18000, 0)
+layers = 4
+operation = 2
+
+[node name="CSGBox3D2" type="CSGBox3D" parent="InnerPyramid/Slots"]
+transform = Transform3D(0.99999994, 0, 0, 0, 1, 0, 0, 0, 0.99999994, 0, 0, 0)
+layers = 4
+size = Vector3(100000, 30000, 10000)
+material = ExtResource("3_yw1ox")
+
+[node name="CSGBox3D3" type="CSGBox3D" parent="InnerPyramid/Slots"]
+transform = Transform3D(-4.3711385e-08, 0, 0.99999994, 0, 1, 0, -0.99999994, 0, -4.3711385e-08, 0, 0, 0)
+layers = 4
+size = Vector3(100000, 30000, 10000)
+material = ExtResource("3_yw1ox")
+
+[node name="AutoRange" type="Node" parent="InnerPyramid"]
+script = ExtResource("4_kox75")
+lod = 1
+end_margin_pct = 0.01
+metadata/_custom_type_script = "uid://cv0o1lirqeq44"
+
+[node name="WorldFloor" type="MeshInstance3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 50000, 0, 50000)
+layers = 4
+mesh = SubResource("PlaneMesh_pko82")
+
+[node name="StaticBody3D" type="StaticBody3D" parent="WorldFloor"]
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="WorldFloor/StaticBody3D"]
+shape = SubResource("ConcavePolygonShape3D_ek7o7")
+
+[node name="AutoRange" type="Node" parent="WorldFloor"]
+script = ExtResource("4_kox75")
+lod = 1
+end_margin_pct = 0.01
+metadata/_custom_type_script = "uid://cv0o1lirqeq44"
+
+[node name="MetroQuadrant" type="Node3D" parent="."]
+
+[node name="OuterMetro" type="Node3D" parent="MetroQuadrant"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 55)
+bounding_box = AABB(0, 0, 0, 49088, 400, 448)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 503)
+bounding_box = AABB(0, 0, 0, 448, 400, 48640)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="InnerMetro" type="Node3D" parent="MetroQuadrant"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 45047, 0, 503)
+construct_height_factor_x = SubResource("Curve_0w44q")
+construct_height_factor_z = SubResource("Curve_amoo5")
+bounding_box = AABB(0, 0, 0, 4096, 400, 44480)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 503, 0, 45047)
+construct_height_factor_x = SubResource("Curve_amoo5")
+construct_height_factor_z = SubResource("Curve_0w44q")
+bounding_box = AABB(0, 0, 0, 44480, 400, 4096)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="UpperMetro" type="Node3D" parent="MetroQuadrant"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+debug = true
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 28700, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer3" parent="MetroQuadrant/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 38500, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer4" parent="MetroQuadrant/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 28700)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer5" parent="MetroQuadrant/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 38500)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroQuadrant2" type="Node3D" parent="."]
+transform = Transform3D(-4.371139e-08, 0, 1, 0, 1, 0, -1, 0, -4.371139e-08, 0, 0, 100000)
+
+[node name="OuterMetro" type="Node3D" parent="MetroQuadrant2"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant2/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 55)
+bounding_box = AABB(0, 0, 0, 49088, 400, 448)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant2/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 503)
+bounding_box = AABB(0, 0, 0, 448, 400, 48640)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="InnerMetro" type="Node3D" parent="MetroQuadrant2"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant2/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 45047, 0, 503)
+construct_height_factor_x = SubResource("Curve_0w44q")
+construct_height_factor_z = SubResource("Curve_amoo5")
+bounding_box = AABB(0, 0, 0, 4096, 400, 44480)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant2/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 503, 0, 45047)
+construct_height_factor_x = SubResource("Curve_amoo5")
+construct_height_factor_z = SubResource("Curve_0w44q")
+bounding_box = AABB(0, 0, 0, 44480, 400, 4096)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="UpperMetro" type="Node3D" parent="MetroQuadrant2"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant2/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant2/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 28700, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer3" parent="MetroQuadrant2/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 38500, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer4" parent="MetroQuadrant2/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 28700)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer5" parent="MetroQuadrant2/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 38500)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroQuadrant3" type="Node3D" parent="."]
+transform = Transform3D(-1, 0, -8.742278e-08, 0, 1, 0, 8.742278e-08, 0, -1, 100000, 0, 100000)
+
+[node name="OuterMetro" type="Node3D" parent="MetroQuadrant3"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant3/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 55)
+bounding_box = AABB(0, 0, 0, 49088, 400, 448)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant3/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 503)
+bounding_box = AABB(0, 0, 0, 448, 400, 48640)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="InnerMetro" type="Node3D" parent="MetroQuadrant3"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant3/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 45047, 0, 503)
+construct_height_factor_x = SubResource("Curve_0w44q")
+construct_height_factor_z = SubResource("Curve_amoo5")
+bounding_box = AABB(0, 0, 0, 4096, 400, 44480)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant3/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 503, 0, 45047)
+construct_height_factor_x = SubResource("Curve_amoo5")
+construct_height_factor_z = SubResource("Curve_0w44q")
+bounding_box = AABB(0, 0, 0, 44480, 400, 4096)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="UpperMetro" type="Node3D" parent="MetroQuadrant3"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant3/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant3/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 28700, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer3" parent="MetroQuadrant3/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 38500, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer4" parent="MetroQuadrant3/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 28700)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer5" parent="MetroQuadrant3/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 38500)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroQuadrant4" type="Node3D" parent="."]
+transform = Transform3D(-4.371139e-08, 0, -1, 0, 1, 0, 1, 0, -4.371139e-08, 100000, 0, 0)
+
+[node name="OuterMetro" type="Node3D" parent="MetroQuadrant4"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant4/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 55)
+bounding_box = AABB(0, 0, 0, 49088, 400, 448)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant4/OuterMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 55, 0, 503)
+bounding_box = AABB(0, 0, 0, 448, 400, 48640)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="InnerMetro" type="Node3D" parent="MetroQuadrant4"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant4/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 45047, 0, 503)
+construct_height_factor_x = SubResource("Curve_0w44q")
+construct_height_factor_z = SubResource("Curve_amoo5")
+bounding_box = AABB(0, 0, 0, 4096, 400, 44480)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant4/InnerMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 503, 0, 45047)
+construct_height_factor_x = SubResource("Curve_amoo5")
+construct_height_factor_z = SubResource("Curve_0w44q")
+bounding_box = AABB(0, 0, 0, 44480, 400, 4096)
+noise_offset = Vector3(1, 1, 1)
+
+[node name="UpperMetro" type="Node3D" parent="MetroQuadrant4"]
+
+[node name="MetroGridLayer" parent="MetroQuadrant4/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer2" parent="MetroQuadrant4/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 28700, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer3" parent="MetroQuadrant4/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 38500, 25000, 18900)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer4" parent="MetroQuadrant4/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 28700)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
+
+[node name="MetroGridLayer5" parent="MetroQuadrant4/UpperMetro" instance=ExtResource("4_fy7wq")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 18900, 25000, 38500)
+simple_construct_threshold = 0.4
+construct_height_factor_x = SubResource("Curve_kox75")
+bounding_box = AABB(0, 0, 0, 5632, 400, 5632)
+noise_scale = Vector3(0.01, 0.01, 0.01)
--- a/src/world/generation/feature/arcology/empty.tscn
+++ b/src/world/generation/feature/arcology/empty.tscn
@ -0,0 +1,29 @@
+[gd_scene load_steps=5 format=3 uid="uid://dawv6mbpr4d3c"]
+
+[ext_resource type="Script" uid="uid://drk82eeqk2mjs" path="res://src/world/generation/feature/generation_feature.gd" id="1_ydt4o"]
+[ext_resource type="Script" uid="uid://cv0o1lirqeq44" path="res://src/util/auto_range.gd" id="2_q70le"]
+
+[sub_resource type="PlaneMesh" id="PlaneMesh_ydt4o"]
+size = Vector2(100000, 100000)
+
+[sub_resource type="ConcavePolygonShape3D" id="ConcavePolygonShape3D_q70le"]
+data = PackedVector3Array(50000, 0, 50000, -50000, 0, 50000, 50000, 0, -50000, -50000, 0, 50000, -50000, 0, -50000, 50000, 0, -50000)
+
+[node name="Empty" type="Node3D"]
+script = ExtResource("1_ydt4o")
+metadata/_custom_type_script = "uid://drk82eeqk2mjs"
+
+[node name="WorldFloor" type="MeshInstance3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 50000, 0, 50000)
+layers = 4
+mesh = SubResource("PlaneMesh_ydt4o")
+
+[node name="StaticBody3D" type="StaticBody3D" parent="WorldFloor"]
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="WorldFloor/StaticBody3D"]
+shape = SubResource("ConcavePolygonShape3D_q70le")
+
+[node name="AutoRange" type="Node" parent="WorldFloor"]
+script = ExtResource("2_q70le")
+lod = 1
+metadata/_custom_type_script = "uid://cv0o1lirqeq44"
--- a/src/world/generation/feature/generation_feature.gd
+++ b/src/world/generation/feature/generation_feature.gd
@ -0,0 +1,43 @@
+class_name GenerationFeature extends GeneratedElement
+## Base class for world features generated during worldgen.
+
+## Set of sub-layers that require generation at each LOD
+var sub_layers: Dictionary[WorldGen.LOD, Dictionary] = {
+	WorldGen.LOD.LOW: {},
+	WorldGen.LOD.MEDIUM: {},
+	WorldGen.LOD.HIGH: {},
+}
+
+## Set of LODs at which this feature has been generated
+var generated: Dictionary[WorldGen.LOD, bool] = {}
+
+
+func _ready() -> void:
+	_discover_sub_layers(self)
+
+
+func _discover_sub_layers(node: Node) -> void:
+	if node is GenerationLayer:
+		for lod in WorldGen.LOD_LIST:
+			sub_layers[lod][node] = false
+	for c: Node in node.get_children():
+		# Do not walk outside of this scene
+		if c.owner in [owner, self]:
+			_discover_sub_layers(c)
+
+
+func _generate(lod: WorldGen.LOD) -> bool:
+	if lod not in generated:
+		generate_feature(lod)
+		generated[lod] = true
+
+	for layer: GenerationLayer in sub_layers[lod]:
+		if layer.generate(lod):
+			sub_layers[lod].erase(layer)
+
+	return not sub_layers[lod]
+
+
+## Generate elements of this feature. Called by default on the first call to `probe` for this lod.
+func generate_feature(_lod: WorldGen.LOD) -> void:
+	pass  # Implemented in derived type
--- a/src/world/generation/feature/generation_feature.gd.uid
+++ b/src/world/generation/feature/generation_feature.gd.uid
@ -0,0 +1 @@
+uid://drk82eeqk2mjs
--- a/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd
+++ b/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd
@ -0,0 +1,15 @@
+class_name MetroConstructSimple extends GenerationFeature
+
+@export var min_height := 48.0
+@export var height_factor := 200.0
+
+@onready var construct_box: CSGBox3D = %ConstructBox
+
+
+func generate_feature(lod: WorldGen.LOD) -> void:
+	match lod:
+		WorldGen.LOD.MEDIUM:
+			var value := absf(sample_noise())
+			var height := value * height_factor + min_height
+			construct_box.position.y = height / 2
+			construct_box.size.y = height
--- a/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd.uid
+++ b/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd.uid
@ -0,0 +1 @@
+uid://dq5xadqwyspyh
--- a/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.tscn
+++ b/src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.tscn
@ -0,0 +1,44 @@
+[gd_scene load_steps=5 format=3 uid="uid://beno0v5dxtwqs"]
+
+[ext_resource type="Script" uid="uid://dq5xadqwyspyh" path="res://src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.gd" id="1_jv74y"]
+[ext_resource type="Script" uid="uid://cv0o1lirqeq44" path="res://src/util/auto_range.gd" id="2_74b57"]
+
+[sub_resource type="PlaneMesh" id="PlaneMesh_lhl33"]
+size = Vector2(64, 64)
+subdivide_width = 4
+subdivide_depth = 4
+
+[sub_resource type="ConvexPolygonShape3D" id="ConvexPolygonShape3D_y2o1w"]
+points = PackedVector3Array(-31.999998, 0, -31.999998, -31.999998, 0, 31.999998, 32, 0, -31.999998, 32, 0, 31.999998)
+
+[node name="MetroConstructSimple" type="Node3D"]
+script = ExtResource("1_jv74y")
+generated_lods = 6
+metadata/_custom_type_script = "uid://drk82eeqk2mjs"
+
+[node name="WorldFloor" type="MeshInstance3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 32, 0, 32)
+layers = 2
+mesh = SubResource("PlaneMesh_lhl33")
+
+[node name="StaticBody3D" type="StaticBody3D" parent="WorldFloor"]
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="WorldFloor/StaticBody3D"]
+shape = SubResource("ConvexPolygonShape3D_y2o1w")
+
+[node name="AutoRange" type="Node" parent="WorldFloor"]
+script = ExtResource("2_74b57")
+lod = 2
+metadata/_custom_type_script = "uid://cv0o1lirqeq44"
+
+[node name="ConstructBox" type="CSGBox3D" parent="."]
+unique_name_in_owner = true
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 32, 24, 32)
+layers = 2
+use_collision = true
+size = Vector3(48, 48, 48)
+
+[node name="AutoRange" type="Node" parent="ConstructBox"]
+script = ExtResource("2_74b57")
+lod = 2
+metadata/_custom_type_script = "uid://cv0o1lirqeq44"
--- a/src/world/generation/feature/metro/metro_empty.tscn
+++ b/src/world/generation/feature/metro/metro_empty.tscn
@ -0,0 +1,30 @@
+[gd_scene load_steps=5 format=3 uid="uid://cgvg7n525g18l"]
+
+[ext_resource type="Script" uid="uid://drk82eeqk2mjs" path="res://src/world/generation/feature/generation_feature.gd" id="1_e5j5s"]
+[ext_resource type="Script" uid="uid://cv0o1lirqeq44" path="res://src/util/auto_range.gd" id="2_xbnbu"]
+
+[sub_resource type="PlaneMesh" id="PlaneMesh_e5j5s"]
+size = Vector2(64, 64)
+subdivide_width = 4
+subdivide_depth = 4
+
+[sub_resource type="ConvexPolygonShape3D" id="ConvexPolygonShape3D_e5j5s"]
+points = PackedVector3Array(-31.999998, 0, -31.999998, -31.999998, 0, 31.999998, 32, 0, -31.999998, 32, 0, 31.999998)
+
+[node name="MetroEmpty" type="Node3D"]
+script = ExtResource("1_e5j5s")
+metadata/_custom_type_script = "uid://drk82eeqk2mjs"
+
+[node name="WorldFloor" type="MeshInstance3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 32, 0, 32)
+mesh = SubResource("PlaneMesh_e5j5s")
+
+[node name="StaticBody3D" type="StaticBody3D" parent="WorldFloor"]
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="WorldFloor/StaticBody3D"]
+shape = SubResource("ConvexPolygonShape3D_e5j5s")
+
+[node name="AutoRange" type="Node" parent="WorldFloor"]
+script = ExtResource("2_xbnbu")
+lod = 2
+metadata/_custom_type_script = "uid://cv0o1lirqeq44"
--- a/src/world/generation/generated_element.gd
+++ b/src/world/generation/generated_element.gd
@ -0,0 +1,40 @@
+class_name GeneratedElement extends Node3D
+## Base class for all generated world elements
+
+@export_flags("Low", "Medium", "High") var generated_lods := 0b111
+
+## Scale to apply to position before sampling world generation noise.
+@export var noise_scale := Vector3.ONE
+
+## Offset to apply to position before sampling world generation noise.
+@export var noise_offset := Vector3.ZERO
+
+
+## Generate this element at the given level of detail.
+##
+## Returns `true` if the element has completed generation at this LOD.
+## Some composite elements may require multiple `generate` calls to complete generation.
+func generate(lod: WorldGen.LOD) -> bool:
+	if lod & generated_lods:
+		return _generate(lod)
+	return true
+
+
+## Generate this element at the given level of detail.
+##
+## This method is called by `generate` and should be overridden by derived types with
+## custom generation logic.
+## Returns `true` if the element has completed generation at this LOD.
+## Some composite elements may require multiple `generate` calls to complete generation.
+func _generate(_lod: WorldGen.LOD) -> bool:
+	return true  # Implemented by derived types.
+
+
+## Sample world generation noise at this element's position with scale & offset.
+func sample_noise() -> float:
+	return sample_noise_at(global_position)
+
+
+## Sample world generation noise at the given point, applying this element's scale & offset.
+func sample_noise_at(pos: Vector3) -> float:
+	return WorldGenManager.noise.get_noise_3dv(pos * noise_scale + noise_offset)
--- a/src/world/generation/generated_element.gd.uid
+++ b/src/world/generation/generated_element.gd.uid
@ -0,0 +1 @@
+uid://c7x4yin558csb
--- a/src/world/generation/generated_world.gd
+++ b/src/world/generation/generated_world.gd
@ -1,21 +1,24 @@
 class_name GeneratedWorld extends Node3D

-@export var generation_radius := 6.0
-
-var chunks: Dictionary[Vector2, Chunk] = {}
+var elements: Dictionary[WorldGen.LOD, Dictionary] = {
+	WorldGen.LOD.LOW: {},
+	WorldGen.LOD.MEDIUM: {},
+	WorldGen.LOD.HIGH: {},
+}


-func get_chunk(chunk_pos: Vector2) -> Chunk:
-	if chunk_pos not in chunks:
-		var chunk := Chunk.generate_chunk(chunk_pos)
-		add_child(chunk)
-		chunks[chunk_pos] = chunk
-	return chunks[chunk_pos]
+func _ready() -> void:
+	for c: Node in get_children():
+		if c is GeneratedElement:
+			for lod in WorldGen.LOD_LIST:
+				if not elements[lod]:
+					elements[lod] = {}
+				elements[lod][c] = false


 func _process(_delta: float) -> void:
-	var camera := get_viewport().get_camera_3d()
-	var center := Chunk.world_to_chunk(camera.global_position)
-	for x in range(center.x - generation_radius, center.x + generation_radius):
-		for y in range(center.y - generation_radius, center.y + generation_radius):
-			get_chunk(Vector2(x, y))
+	# Probe all child generation layers & features each frame
+	for lod in WorldGen.LOD_LIST:
+		for element: GeneratedElement in elements[lod]:
+			if element.generate(lod):
+				elements[lod].erase(element)
--- a/src/world/generation/generated_world.tscn
+++ b/src/world/generation/generated_world.tscn
@ -1,6 +1,9 @@
-[gd_scene load_steps=2 format=3 uid="uid://cop4mkrv70yhc"]
+[gd_scene load_steps=3 format=3 uid="uid://cop4mkrv70yhc"]

 [ext_resource type="Script" uid="uid://dka00cyvfr21t" path="res://src/world/generation/generated_world.gd" id="1_m2u13"]
+[ext_resource type="PackedScene" uid="uid://dlhc1te2ip8vg" path="res://src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.tscn" id="2_k55gd"]

 [node name="GeneratedWorld" type="Node3D"]
 script = ExtResource("1_m2u13")
+
+[node name="ArcologyGridLayer" parent="." instance=ExtResource("2_k55gd")]
--- a/src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.gd
+++ b/src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.gd
@ -0,0 +1,27 @@
+class_name ArcologyGridLayer extends GridLayer
+## Grid with each cell possibly generating an arcology
+
+@export var arcology_feature_scene: PackedScene
+@export var empty_feature_scene: PackedScene
+
+@export var arcology_probability := 0.1
+
+var features: Dictionary[Vector2, GenerationFeature] = {}
+
+
+func generate_grid(lod: WorldGen.LOD, grid_pos: Vector2) -> bool:
+	# Generate if needed
+	if grid_pos not in features:
+		var feature: GenerationFeature
+		var sample := absf(sample_noise_at_grid(grid_pos))
+		print_debug("Sampled ", sample, " at ", grid_pos)
+		if sample < arcology_probability:
+			print_debug("Generating arcology at ", grid_pos)
+			feature = arcology_feature_scene.instantiate()
+		else:
+			feature = empty_feature_scene.instantiate()
+		add_child(feature)
+		feature.global_position = local_to_world(grid_pos)
+		features[grid_pos] = feature
+	# Probe feature
+	return features[grid_pos].generate(lod)
--- a/src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.gd.uid
+++ b/src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.gd.uid
@ -0,0 +1 @@
+uid://kp8r23lsylpk
--- a/src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.tscn
+++ b/src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.tscn
@ -0,0 +1,13 @@
+[gd_scene load_steps=4 format=3 uid="uid://dlhc1te2ip8vg"]
+
+[ext_resource type="Script" uid="uid://kp8r23lsylpk" path="res://src/world/generation/layer/arcology_grid_layer/arcology_grid_layer.gd" id="1_85eh3"]
+[ext_resource type="PackedScene" uid="uid://nllc8ljmn37g" path="res://src/world/generation/feature/arcology/arcology.tscn" id="2_pxyh5"]
+[ext_resource type="PackedScene" uid="uid://dawv6mbpr4d3c" path="res://src/world/generation/feature/arcology/empty.tscn" id="3_p6bke"]
+
+[node name="ArcologyGridLayer" type="Node3D"]
+script = ExtResource("1_85eh3")
+arcology_feature_scene = ExtResource("2_pxyh5")
+empty_feature_scene = ExtResource("3_p6bke")
+grid_size = Vector2(100000, 100000)
+noise_scale = Vector3(2, 2, 2)
+metadata/_custom_type_script = "uid://kp8r23lsylpk"
--- a/src/world/generation/layer/generation_layer.gd
+++ b/src/world/generation/layer/generation_layer.gd
@ -0,0 +1,4 @@
+class_name GenerationLayer extends GeneratedElement
+## A composite layer of world generation logic.
+
+# TODO what else goes here?
--- a/src/world/generation/layer/generation_layer.gd.uid
+++ b/src/world/generation/layer/generation_layer.gd.uid
@ -0,0 +1 @@
+uid://ciq8lxydnfc77
--- a/src/world/generation/layer/grid_layer/bounded_grid_debug_view.gd
+++ b/src/world/generation/layer/grid_layer/bounded_grid_debug_view.gd
@ -0,0 +1,49 @@
+@tool
+class_name BoundedGridDebugView extends Node3D
+## Helper component that draws the AABB of a bounded grid in the editor
+
+@export var debug_color := Color("#a486006b"):
+	set(value):
+		debug_color = value
+		if box:
+			_set_debug_box_color(debug_color)
+
+var mesh_instance: MeshInstance3D
+var box: BoxMesh
+var material: StandardMaterial3D
+
+@onready var target: BoundedGridLayer = get_parent()
+
+
+func _ready() -> void:
+	# Don't want these during runtime
+	if not Engine.is_editor_hint():
+		queue_free()
+
+	# Initialize box drawing components
+	if not mesh_instance:
+		mesh_instance = MeshInstance3D.new()
+		add_child(mesh_instance)
+	if not box:
+		box = BoxMesh.new()
+	if not material:
+		material = StandardMaterial3D.new()
+	mesh_instance.mesh = box
+	box.material = material
+	material.transparency = BaseMaterial3D.TRANSPARENCY_ALPHA
+	material.shading_mode = BaseMaterial3D.SHADING_MODE_UNSHADED
+	_set_debug_box_color(debug_color)
+	_set_debug_box_shape(target.bounding_box)
+
+
+func _set_debug_box_color(color: Color) -> void:
+	material.albedo_color = color
+
+
+func _set_debug_box_shape(aabb: AABB) -> void:
+	mesh_instance.position = aabb.position + aabb.size / 2
+	box.size = aabb.size
+
+
+func _process(_delta: float) -> void:
+	_set_debug_box_shape(target.bounding_box)
--- a/src/world/generation/layer/grid_layer/bounded_grid_debug_view.gd.uid
+++ b/src/world/generation/layer/grid_layer/bounded_grid_debug_view.gd.uid
@ -0,0 +1 @@
+uid://r74iif2we4bu
--- a/src/world/generation/layer/grid_layer/bounded_grid_layer.gd
+++ b/src/world/generation/layer/grid_layer/bounded_grid_layer.gd
@ -0,0 +1,64 @@
+class_name BoundedGridLayer extends GridLayer
+## A layer that generates tiles in a locally-constrained grid.
+
+## Bounding box for the grid on the local XZ plane.
+##
+## Note that only feature handles are checked to be within the bounding box.
+@export var bounding_box: AABB
+
+@export var debug := false
+
+
+func _ready() -> void:
+	var grid := _plane_size()
+	for lod in WorldGen.LOD_LIST:
+		for i in grid.x:
+			for j in grid.y:
+				_generation_grid[lod][Vector2(i, j)] = false
+
+
+func _generate(lod: WorldGen.LOD) -> bool:
+	var center := WorldGenManager.get_generation_point()
+	var radius := WorldGenManager.get_lod_radius(lod)
+
+	# Only generate if the bounding box is within generation radius.
+	if absf((center * global_transform).y) + bounding_box.size.y < radius:
+		var rad_diff := Vector3(radius, 0, radius)
+
+		# Translate probe box limits to grid space
+		var a := world_to_local(center - rad_diff).floor()
+		var b := world_to_local(center + rad_diff).floor()
+		var grid_low := Vector2(minf(a.x, b.x), minf(a.y, b.y))
+		var grid_high := Vector2(maxf(a.x, b.x), maxf(a.y, b.y))
+		var grid_max := _plane_size().floor()
+
+		# Constrain to bounding box
+		var x_min := maxf(grid_low.x, 0)
+		var x_max := minf(grid_high.x + 1, grid_max.x)
+		var y_min := maxf(grid_low.y, 0)
+		var y_max := minf(grid_high.y + 1, grid_max.y)
+
+		# Probe everything within radius
+		for i in range(x_min, x_max):
+			for j in range(y_min, y_max):
+				var pt := Vector2(i, j)
+				if pt in _generation_grid[lod]:
+					if generate_grid(lod, pt):
+						_generation_grid[lod].erase(pt)
+
+	# Return false if there are still grid points to be generated
+	return not _generation_grid[lod]
+
+
+func _plane_size() -> Vector2:
+	return Vector2(bounding_box.size.x / grid_size.x, bounding_box.size.z / grid_size.y)
+
+
+func local_to_world(local_pos: Vector2) -> Vector3:
+	var v3_pos := Vector3(local_pos.x * grid_size.x, 0, local_pos.y * grid_size.y)
+	return global_transform * (bounding_box.position + v3_pos)
+
+
+func world_to_local(world_pos: Vector3) -> Vector2:
+	var rel_pos := world_pos * global_transform - bounding_box.position
+	return Vector2(rel_pos.x / grid_size.x, rel_pos.z / grid_size.y)
--- a/src/world/generation/layer/grid_layer/bounded_grid_layer.gd.uid
+++ b/src/world/generation/layer/grid_layer/bounded_grid_layer.gd.uid
@ -0,0 +1 @@
+uid://bo2pmuy3dn5y4
--- a/src/world/generation/layer/grid_layer/grid_layer.gd
+++ b/src/world/generation/layer/grid_layer/grid_layer.gd
@ -0,0 +1,55 @@
+class_name GridLayer extends GenerationLayer
+## A layer that generates tiles on an infinite grid
+
+## Size of a grid tile in the local XZ plane.
+@export var grid_size: Vector2
+
+var _generation_grid: Dictionary[WorldGen.LOD, Dictionary] = {
+	WorldGen.LOD.LOW: {},
+	WorldGen.LOD.MEDIUM: {},
+	WorldGen.LOD.HIGH: {},
+}
+
+
+func _generate(lod: WorldGen.LOD) -> bool:
+	var center := WorldGenManager.get_generation_point()
+	var radius := WorldGenManager.get_lod_radius(lod)
+	var rad_diff := Vector3(radius, 0, radius)
+
+	# Translate probe box limits to grid space
+	var a := world_to_local(center - rad_diff).floor()
+	var b := world_to_local(center + rad_diff).floor()
+	var grid_low := Vector2(minf(a.x, b.x), minf(a.y, b.y))
+	var grid_high := Vector2(maxf(a.x, b.x), maxf(a.y, b.y))
+
+	# Probe everything within radius
+	for i in range(grid_low.x, grid_high.x + 1):
+		for j in range(grid_low.y, grid_high.y + 1):
+			var pt := Vector2(i, j)
+			if pt not in _generation_grid[lod]:
+				if generate_grid(lod, pt):
+					_generation_grid[lod][pt] = true
+
+	# The grid is infinite, so there will always be more to generate
+	return false
+
+
+## Generate the given grid position.
+##
+## Like `generate`, this returns `true` when generation is complete.
+func generate_grid(_lod: WorldGen.LOD, _grid_pos: Vector2) -> bool:
+	return true  # Implement in derived type
+
+
+func local_to_world(local_pos: Vector2) -> Vector3:
+	var v3_pos := Vector3(local_pos.x * grid_size.x, 0, local_pos.y * grid_size.y)
+	return global_transform * v3_pos
+
+
+func world_to_local(world_pos: Vector3) -> Vector2:
+	var rel_pos := world_pos * global_transform
+	return Vector2(rel_pos.x / grid_size.x, rel_pos.z / grid_size.y)
+
+
+func sample_noise_at_grid(grid_pos: Vector2) -> float:
+	return sample_noise_at(local_to_world(grid_pos))
--- a/src/world/generation/layer/grid_layer/grid_layer.gd.uid
+++ b/src/world/generation/layer/grid_layer/grid_layer.gd.uid
@ -0,0 +1 @@
+uid://nq1cuemdrtn2
--- a/src/world/generation/layer/metro_grid_layer/metro_grid_layer.gd
+++ b/src/world/generation/layer/metro_grid_layer/metro_grid_layer.gd
@ -0,0 +1,36 @@
+extends BoundedGridLayer
+## Procedural cityscape generation
+
+@export var empty_scene: PackedScene
+@export var simple_construct_scene: PackedScene
+
+@export_group("Construct Parameters")
+@export var simple_construct_threshold := 0.3
+@export var construct_height_factor_x: Curve
+@export var construct_height_factor_z: Curve
+
+var features: Dictionary[Vector2, GenerationFeature] = {}
+
+
+func generate_simple_construct(grid_pos: Vector2) -> MetroConstructSimple:
+	var instance: MetroConstructSimple = simple_construct_scene.instantiate()
+	var sample_pos := grid_pos / _plane_size()
+	if construct_height_factor_x:
+		instance.height_factor *= construct_height_factor_x.sample(sample_pos.x)
+	if construct_height_factor_z:
+		instance.height_factor *= construct_height_factor_z.sample(sample_pos.y)
+	return instance
+
+
+func generate_grid(lod: WorldGen.LOD, grid_pos: Vector2) -> bool:
+	if grid_pos not in features:
+		var feature: GenerationFeature
+		var sample := absf(sample_noise_at(local_to_world(grid_pos)))
+		if sample > simple_construct_threshold:
+			feature = generate_simple_construct(grid_pos)
+		else:
+			feature = empty_scene.instantiate()
+		add_child(feature)
+		feature.global_position = local_to_world(grid_pos)
+		features[grid_pos] = feature
+	return features[grid_pos].generate(lod)
--- a/src/world/generation/layer/metro_grid_layer/metro_grid_layer.gd.uid
+++ b/src/world/generation/layer/metro_grid_layer/metro_grid_layer.gd.uid
@ -0,0 +1 @@
+uid://d25t2340sdrox
--- a/src/world/generation/layer/metro_grid_layer/metro_grid_layer.tscn
+++ b/src/world/generation/layer/metro_grid_layer/metro_grid_layer.tscn
@ -0,0 +1,17 @@
+[gd_scene load_steps=5 format=3 uid="uid://cwygxhknl2h8r"]
+
+[ext_resource type="Script" uid="uid://d25t2340sdrox" path="res://src/world/generation/layer/metro_grid_layer/metro_grid_layer.gd" id="1_ng6r6"]
+[ext_resource type="PackedScene" uid="uid://cgvg7n525g18l" path="res://src/world/generation/feature/metro/metro_empty.tscn" id="2_47xjc"]
+[ext_resource type="PackedScene" uid="uid://beno0v5dxtwqs" path="res://src/world/generation/feature/metro/metro_construct_simple/metro_construct_simple.tscn" id="3_woad2"]
+[ext_resource type="Script" uid="uid://r74iif2we4bu" path="res://src/world/generation/layer/grid_layer/bounded_grid_debug_view.gd" id="4_woad2"]
+
+[node name="MetroGridLayer" type="Node3D"]
+script = ExtResource("1_ng6r6")
+empty_scene = ExtResource("2_47xjc")
+simple_construct_scene = ExtResource("3_woad2")
+grid_size = Vector2(64, 64)
+generated_lods = 6
+
+[node name="BoundedGridDebugView" type="Node3D" parent="."]
+script = ExtResource("4_woad2")
+metadata/_custom_type_script = "uid://r74iif2we4bu"
--- a/src/world/generation/worldgen_manager/worldgen_manager.gd
+++ b/src/world/generation/worldgen_manager/worldgen_manager.gd
@ -1,4 +1,43 @@
-class_name WorldGenManagerType extends Node
+class_name WorldGen extends Node
 ## Global autoloaded singleton controller for worldgen parameters

+## Worldgen uses custom levels of detail, distinct from mesh LODs.
+enum LOD {
+	LOW = 0b001,
+	MEDIUM = 0b010,
+	HIGH = 0b100,
+}
+
+## List of LODs, for iteration convenience.
+const LOD_LIST: Array[WorldGen.LOD] = [LOD.LOW, LOD.MEDIUM, LOD.HIGH]
+
@export var noise: FastNoiseLite
+
+## Generate features with the lowest detail, like large distant structures, within this radius
+@export var low_detail_radius := 100000.0
+## Generate features with medium detail, like buildings, within this radius
+@export var med_detail_radius := 8192.0
+## Generate features with high detail, like small complicated objects, within this radius
+@export var high_detail_radius := 128.0
+
+
+## Get the world-space coordinate to generate around.
+func get_generation_point() -> Vector3:
+	var viewport := get_viewport()
+	if viewport:
+		var camera := viewport.get_camera_3d()
+		if camera:
+			return camera.global_position
+	return Vector3.ZERO
+
+
+## Get the generation radius for a given LOD.
+func get_lod_radius(lod: LOD) -> float:
+	match lod:
+		LOD.LOW:
+			return low_detail_radius
+		LOD.MEDIUM:
+			return med_detail_radius
+		LOD.HIGH:
+			return high_detail_radius
+	return -1
--- a/src/world/generation/worldgen_manager/worldgen_manager.tscn
+++ b/src/world/generation/worldgen_manager/worldgen_manager.tscn
@ -3,7 +3,9 @@
 [ext_resource type="Script" uid="uid://7frynyj4vspc" path="res://src/world/generation/worldgen_manager/worldgen_manager.gd" id="1_7xvag"]

 [sub_resource type="FastNoiseLite" id="FastNoiseLite_7xvag"]
+noise_type = 0
 frequency = 0.1
+offset = Vector3(1024, 1024, 1024)

 [node name="WorldGenManager" type="Node"]
 script = ExtResource("1_7xvag")
--- a/src/world/world.tscn
+++ b/src/world/world.tscn
Author	SHA1	Message	Date
Rob Kelly	9cb5de8e93	Bounded grid generation layers check distance from plane before generation All checks were successful linting & formatting / build (push) Successful in 49s Details	2025-10-04 18:23:25 -06:00
Rob Kelly	94f97ad3ae	Arcology terrace metro generation	2025-10-04 18:05:52 -06:00
Rob Kelly	e99a6ed4f8	Arcology metro reshaping	2025-10-04 17:47:02 -06:00
Rob Kelly	460d105afd	Extracted bounding box debug draw logic to component	2025-10-04 17:03:13 -06:00
Rob Kelly	64a9292f9f	Reorganized worldgen structure hierarchy around generation LODs	2025-10-04 16:51:48 -06:00
Rob Kelly	e2d75f394d	Rearranged arcology metro sublayers	2025-10-03 18:46:17 -06:00
Rob Kelly	ae4f4dba0c	Utility component to automatically set visibility range based on defined LOD boundaries	2025-10-03 17:27:07 -06:00
Rob Kelly	3a12e8218d	Simple metro biome	2025-10-03 17:12:19 -06:00
Rob Kelly	5272ebdc0a	Constrained grid generation layer	2025-10-03 17:11:59 -06:00
Rob Kelly	3352e24771	Fractal steel material	2025-10-03 15:06:48 -06:00
Rob Kelly	cf9f96f42c	Added DebugDraw3D plugin	2025-10-03 12:46:58 -06:00
Rob Kelly	0714bc8122	Adjustable debug fly speed (use mouse wheel)	2025-10-02 18:51:36 -06:00
Rob Kelly	2c065a2663	Arcology feature & generation layer	2025-10-02 16:42:39 -06:00
Rob Kelly	16c76aeb72	Feature & layer concepts in worldgen	2025-10-02 16:42:27 -06:00
Rob Kelly	2792a1681a	Removed debug text	2025-09-30 11:22:59 -06:00