{
  "added_at": "2026-10-17",
  "additional_evidence_urls": [
    "https://github.com/morluto/rea/blob/c360cfcd6d7901514b16dd6113eba2e0b0fdf422/website/public/assets/licenses/dinosaur.txt"
  ],
  "category": "official-case-studies",
  "description_en": "REA’s documented teaching case inspects the HTTP t-rex-runner edition and reconstructs its speed-update rule. A separate controlled original-game check and a new demonstration compare update counts, including the floating-point step that crosses the nominal speed threshold.",
  "description_zh": "REA 的教学案例检查 HTTP 版 t-rex-runner，并重建其速度更新规则。单独进行的受控原游戏检查与新演示对比更新次数，包含浮点递增越过名义速度阈值的一步。",
  "entry_url": "https://awesomerea.org/resources/rea-dinosaur-speed-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/rea-dinosaur-speed-case/",
  "evidence_url": "https://github.com/morluto/rea/blob/c360cfcd6d7901514b16dd6113eba2e0b0fdf422/website/evidence/calculator-and-dino.md",
  "group": "rea",
  "id": "rea-dinosaur-speed-case",
  "json_url": "https://awesomerea.org/resources/rea-dinosaur-speed-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/rea-dinosaur-speed-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/rea-dinosaur-speed-case/index.md",
  "name": "Dinosaur runner: recovering one acceleration rule",
  "name_zh": "恐龙跑酷：恢复一条加速规则",
  "record_type": "resource",
  "relationship": "official-case-study",
  "requirement_facets": [
    "scope",
    "attribution",
    "limits",
    "testing"
  ],
  "requirements": [
    "The recorded target is wayou’s HTTP browser edition at the cited revision, not chrome://dino/. Source and observation hashes identify that edition.",
    "After read-only inspection, a separate Playwright controller disabled future scheduling and obstacles to call the original update function under controlled conditions.",
    "The reconstructed claim is limited to acceleration. Drawing, jumping, collisions and controls in the teaching game are newly authored, not independently recovered original gameplay.",
    "Public result tables and code document the author’s checks. The cited original-source excerpts retain Chromium attribution and BSD-3-Clause terms."
  ],
  "requirements_zh": [
    "记录目标为所引版本的 wayou HTTP 浏览器版本，而非 chrome://dino/；源码与观察哈希标识该版本。",
    "只读检查后，单独的 Playwright 控制器关闭后续调度和障碍物，在受控条件下调用原更新函数。",
    "重建结论仅限加速规则。教学游戏中的绘制、跳跃、碰撞和控件是新编写的，不是独立恢复的原玩法。",
    "公开结果表和代码记录作者的检查。引用的原源码片段保留 Chromium 署名和 BSD-3-Clause 条款。"
  ],
  "targets": [
    "game",
    "website"
  ],
  "url": "https://github.com/morluto/rea/blob/c360cfcd6d7901514b16dd6113eba2e0b0fdf422/website/evidence/calculator-and-dino.md#dinosaur-speed",
  "verification": "source-reviewed",
  "verified_at": "2026-10-17"
}