{
  "added_at": "2026-10-29",
  "additional_evidence_urls": [
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/BootScreen.gd",
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/Region.gd",
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/CityView/CityScene/City.gd",
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/DATExplorer/SubfilePreview.gd",
    "https://github.com/OpenSC4-org/OpenSC4/tree/fdc90c33e6e012b8c825f20ee10c51f55796df39/addons/dbpf",
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/project.godot",
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/.gitignore",
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/Core.gd",
    "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/utils/logger.gd"
  ],
  "category": "reconstruction-cases",
  "description_en": "Reimplements SimCity 4 as a Godot project in GDScript that reads DBPF archives, region folders and city saves from the user’s own SimCity 4 installation. The code draws a region view with city thumbnails and interface elements built from the game’s UI definitions, opens a saved city’s terrain and water in 3D, and includes a DAT explorer for previewing archive subfiles. It is an early, inactive engine case without simulation gameplay, not a playable replacement.",
  "description_zh": "以 Godot 项目和 GDScript 重新实现 SimCity 4，从使用者自有的 SimCity 4 安装目录读取 DBPF 归档、区域文件夹和城市存档。代码可绘制带城市缩略图的区域视图，并依据游戏的 UI 定义生成界面元素，可在 3D 中打开已存城市的地形与水面，还附带用于预览归档子文件的 DAT 浏览器。这是一个早期且已停滞的引擎案例，尚无模拟玩法，并非可替代原版的实现。",
  "entry_url": "https://awesomerea.org/resources/opensc4-simcity-4-reimplementation-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/opensc4-simcity-4-reimplementation-case/",
  "evidence_url": "https://github.com/OpenSC4-org/OpenSC4/blob/fdc90c33e6e012b8c825f20ee10c51f55796df39/README.md",
  "group": "cases",
  "id": "opensc4-simcity-4-reimplementation-case",
  "json_url": "https://awesomerea.org/resources/opensc4-simcity-4-reimplementation-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/opensc4-simcity-4-reimplementation-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/opensc4-simcity-4-reimplementation-case/index.md",
  "name": "OpenSC4: an early open-source reimplementation of SimCity 4",
  "name_zh": "OpenSC4：SimCity 4 的早期开源重新实现",
  "reconstruction_method": "engine-reimplementation",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirements": [
    "The reviewed main snapshot (2024-03-29) only added a README and a Discord invite; the last code change dates from 2023-02-17, and the repository has no releases or tags. README describes an open source “clone” meant to use modern hardware and run on other platforms. The code covers DBPF parsing, a region view for the hard-coded Timbuktu region, a city terrain view and the DAT explorer, with no zoning, budget or growth simulation.",
    "Needs the user’s own SimCity 4 installation: the boot screen asks for its folder and checks for SimCity 4.ini, Sound.dat, Intro.dat, SimCity_1.dat to SimCity_5.dat and EP1.dat, then reads .sc4 city saves, config.bmp and region music from that folder. .gitignore excludes SimCity 4 data, although the tree contains a “Graphics Rules.sgr.backup” text file whose header says SC4Launcher generated it.",
    "Runs from source in the Godot editor: README’s setup is to install Godot, import the cloned project and run it, without naming a version. project.godot uses config_version 4 and the scripts call Godot 3 APIs such as yield and Directory; no export presets or packaged builds are provided.",
    "The repository has no tests or CI workflows and publishes no comparison with SimCity 4’s behaviour or output.",
    "GitHub detects no license and the tree has no license file; nine GDScript files carry AGPL-3.0-or-later headers for “The OpenSC4 contributors” (2023), and utils/logger.gd is MIT-licensed code from KOBUGE Games’ godot-logger. SimCity 4 and its data keep their owners’ rights."
  ],
  "requirements_zh": [
    "所审阅的 main 快照（2024-03-29）只新增了 README 和 Discord 邀请；最后一次代码改动在 2023-02-17，仓库没有发行版或标签。README 称项目是一个开源“克隆”，旨在利用现代硬件并在其他平台上运行。代码涵盖 DBPF 解析、写死为 Timbuktu 区域的区域视图、城市地形视图和 DAT 浏览器，没有分区、预算或发展模拟。",
    "需要使用者自有的 SimCity 4 安装：启动画面会询问其目录，并检查 SimCity 4.ini、Sound.dat、Intro.dat、SimCity_1.dat 至 SimCity_5.dat 以及 EP1.dat，随后从该目录读取 .sc4 城市存档、config.bmp 和区域音乐。.gitignore 排除了 SimCity 4 数据，但仓库中仍有一个“Graphics Rules.sgr.backup”文本文件，其文件头称由 SC4Launcher 生成。",
    "在 Godot 编辑器中从源码运行：README 的步骤是安装 Godot、导入克隆的项目并运行，未指明版本。project.godot 使用 config_version 4，脚本调用 yield、Directory 等 Godot 3 API；仓库不提供导出预设或打包版本。",
    "仓库没有测试或 CI 工作流，也未公布与 SimCity 4 行为或输出的对比。",
    "GitHub 未检测到许可证，仓库也没有许可证文件；九个 GDScript 文件带有署名“The OpenSC4 contributors”（2023）的 AGPL-3.0-or-later 文件头，utils/logger.gd 则是 KOBUGE Games 的 godot-logger 中采用 MIT 许可的代码。SimCity 4 及其数据的权利仍归其所有者。"
  ],
  "targets": [
    "game"
  ],
  "url": "https://github.com/OpenSC4-org/OpenSC4",
  "verification": "source-reviewed",
  "verified_at": "2026-10-19"
}