.

2025-03-24 22:01:03 +01:00 · 2025-03-24 21:23:51 +01:00 · 2025-03-24 21:23:37 +01:00 · 2025-03-23 15:24:13 +01:00 · 2025-03-23 14:33:58 +01:00 · 2025-03-23 13:45:30 +01:00
18 changed files with 1103 additions and 4 deletions
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,14 +9,22 @@ jobs:
    steps:
      - uses: actions/checkout@v4
      - uses: oven-sh/setup-bun@v1
+      - uses: dtolnay/rust-toolchain@stable

      - run: bun install --frozen-lockfile

+      - run: bun run build
+        working-directory: packages/solver-r
+
      - run: npm run type
-      - run: npm run lint
+
      - run: bun test
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - run: cargo test
+        working-directory: packages/solver-r
+
+      - run: npm run lint

  test-action:
    runs-on: ubuntu-latest
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ build
 .env
 .wrangler
 .dev.vars
+target
--- a/bun.lock
+++ b/bun.lock
@@ -92,6 +92,13 @@
        "park-miller": "1.1.0",
      },
    },
+    "packages/solver-r": {
+      "name": "@snk/solver-r",
+      "version": "1.0.0",
+      "devDependencies": {
+        "wasm-pack": "0.13.1",
+      },
+    },
    "packages/svg-creator": {
      "name": "@snk/svg-creator",
      "version": "1.0.0",
@@ -107,6 +114,9 @@
      },
    },
  },
+  "trustedDependencies": [
+    "wasm-pack",
+  ],
  "packages": {
    "@actions/core": ["@actions/core@1.11.1", "", { "dependencies": { "@actions/exec": "^1.1.1", "@actions/http-client": "^2.0.1" } }, "sha512-hXJCSrkwfA46Vd9Z3q4cpEpHB1rL5NG04+/rbqW9d3+CSvtB1tYe8UTpAlixa1vj0m/ULglfEK2UKxMGxCxv5A=="],

@@ -260,6 +270,8 @@

    "@snk/solver": ["@snk/solver@workspace:packages/solver"],

+    "@snk/solver-r": ["@snk/solver-r@workspace:packages/solver-r"],
+
    "@snk/svg-creator": ["@snk/svg-creator@workspace:packages/svg-creator"],

    "@snk/types": ["@snk/types@workspace:packages/types"],
@@ -400,6 +412,10 @@

    "as-table": ["as-table@1.0.55", "", { "dependencies": { "printable-characters": "^1.0.42" } }, "sha512-xvsWESUJn0JN421Xb9MQw6AsMHRCUknCe0Wjlxvjud80mU4E6hQf1A6NzQKcYNmYw62MfzEtXc+badstZP3JpQ=="],

+    "axios": ["axios@0.26.1", "", { "dependencies": { "follow-redirects": "^1.14.8" } }, "sha512-fPwcX4EvnSHuInCMItEhAGnaSEXRBjtzh9fOtsE6E1G6p7vl7edEeZe11QHf18+6+9gR5PbKV/sGKNaD8YaMeA=="],
+
+    "balanced-match": ["balanced-match@1.0.2", "", {}, "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw=="],
+
    "base64-js": ["base64-js@1.5.1", "", {}, "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="],

    "batch": ["batch@0.6.1", "", {}, "sha512-x+VAiMRL6UPkx+kudNvxTl6hB2XNNCG2r+7wixVfIYwu/2HKRXimwQyaumLjMveWvT2Hkd/cAJw+QBMfJ/EKVw=="],
@@ -416,6 +432,8 @@

    "binary-extensions": ["binary-extensions@2.3.0", "", {}, "sha512-Ceh+7ox5qe7LJuLHoY0feh3pHuUDHAcRUeyL2VYghZwfpkNIy/+8Ocg0a3UuSoYzavmylwuLWQOf3hl0jjMMIw=="],

+    "binary-install": ["binary-install@1.1.0", "", { "dependencies": { "axios": "^0.26.1", "rimraf": "^3.0.2", "tar": "^6.1.11" } }, "sha512-rkwNGW+3aQVSZoD0/o3mfPN6Yxh3Id0R/xzTVBVVpGNlVz8EGwusksxRlbk/A5iKTZt9zkMn3qIqmAt3vpfbzg=="],
+
    "bl": ["bl@4.1.0", "", { "dependencies": { "buffer": "^5.5.0", "inherits": "^2.0.4", "readable-stream": "^3.4.0" } }, "sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w=="],

    "blake3-wasm": ["blake3-wasm@2.1.5", "", {}, "sha512-F1+K8EbfOZE49dtoPtmxUQrpXaBIl3ICvasLh+nJta0xkz+9kF/7uet9fLnwKqhDrmj6g+6K3Tw9yQPUg2ka5g=="],
@@ -426,6 +444,8 @@

    "boolbase": ["boolbase@1.0.0", "", {}, "sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww=="],

+    "brace-expansion": ["brace-expansion@1.1.11", "", { "dependencies": { "balanced-match": "^1.0.0", "concat-map": "0.0.1" } }, "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA=="],
+
    "braces": ["braces@3.0.3", "", { "dependencies": { "fill-range": "^7.1.1" } }, "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA=="],

    "browserslist": ["browserslist@4.24.4", "", { "dependencies": { "caniuse-lite": "^1.0.30001688", "electron-to-chromium": "^1.5.73", "node-releases": "^2.0.19", "update-browserslist-db": "^1.1.1" }, "bin": { "browserslist": "cli.js" } }, "sha512-KDi1Ny1gSePi1vm0q4oxSF8b4DR44GF4BbmS2YdhPLOEqd8pDviZOGH/GsmRwoWJ2+5Lr085X7naowMwKHDG1A=="],
@@ -492,6 +512,8 @@

    "compression": ["compression@1.8.0", "", { "dependencies": { "bytes": "3.1.2", "compressible": "~2.0.18", "debug": "2.6.9", "negotiator": "~0.6.4", "on-headers": "~1.0.2", "safe-buffer": "5.2.1", "vary": "~1.1.2" } }, "sha512-k6WLKfunuqCYD3t6AsuPGvQWaKwuLLh2/xHNcX4qE+vIfDNXpSqnrhwA7O53R7WVQUnt8dVAIW+YHr7xTgOgGA=="],

+    "concat-map": ["concat-map@0.0.1", "", {}, "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg=="],
+
    "confbox": ["confbox@0.1.8", "", {}, "sha512-RMtmw0iFkeR4YV+fUOSucriAQNb9g8zFR52MWCtl+cCZOFRNL6zeB395vPzFhEjjn4fMxXudmELnl/KF/WrK6w=="],

    "config-chain": ["config-chain@1.1.13", "", { "dependencies": { "ini": "^1.3.4", "proto-list": "~1.2.1" } }, "sha512-qj+f8APARXHrM0hraqXYb2/bOVSV4PvJQlNZ/DVj0QrmNM2q2euizkeuVckQ57J+W0mRH6Hvi+k50M4Jul2VRQ=="],
@@ -672,6 +694,10 @@

    "fs-constants": ["fs-constants@1.0.0", "", {}, "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow=="],

+    "fs-minipass": ["fs-minipass@2.1.0", "", { "dependencies": { "minipass": "^3.0.0" } }, "sha512-V/JgOLFCS+R6Vcq0slCuaeWEdNC3ouDlJMNIsacH2VtALiu9mV4LPrHc5cDl8k5aw6J8jwgWWpiTo5RYhmIzvg=="],
+
+    "fs.realpath": ["fs.realpath@1.0.0", "", {}, "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw=="],
+
    "fsevents": ["fsevents@2.3.3", "", { "os": "darwin" }, "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw=="],

    "function-bind": ["function-bind@1.1.2", "", {}, "sha512-7XHNxH7qX9xG5mIwxkhumTox/MIRNcOgDrxWsMt2pAr23WHp6MrRlN7FBSFpCpr+oVO0F744iUgR82nJMfG2SA=="],
@@ -692,6 +718,8 @@

    "github-from-package": ["github-from-package@0.0.0", "", {}, "sha512-SyHy3T1v2NUXn29OsWdxmK6RwHD+vkj3v8en8AOBZ1wBQ/hCAQ5bAQTD02kW4W9tUp/3Qh6J8r9EvntiyCmOOw=="],

+    "glob": ["glob@7.2.3", "", { "dependencies": { "fs.realpath": "^1.0.0", "inflight": "^1.0.4", "inherits": "2", "minimatch": "^3.1.1", "once": "^1.3.0", "path-is-absolute": "^1.0.0" } }, "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q=="],
+
    "glob-parent": ["glob-parent@5.1.2", "", { "dependencies": { "is-glob": "^4.0.1" } }, "sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow=="],

    "glob-to-regexp": ["glob-to-regexp@0.4.1", "", {}, "sha512-lkX1HJXwyMcprw/5YUZc2s7DrpAiHB21/V+E1rHUrVNokkvB6bqMzT0VfV6/86ZNabt1k14YOIaT7nDvOX3Iiw=="],
@@ -748,6 +776,8 @@

    "import-local": ["import-local@3.2.0", "", { "dependencies": { "pkg-dir": "^4.2.0", "resolve-cwd": "^3.0.0" }, "bin": { "import-local-fixture": "fixtures/cli.js" } }, "sha512-2SPlun1JUPWoM6t3F0dw0FkCF/jWY8kttcY4f599GLTSjh2OCuuhdTkJQsEcZzBqbXZGKMK2OqW1oZsjtf/gQA=="],

+    "inflight": ["inflight@1.0.6", "", { "dependencies": { "once": "^1.3.0", "wrappy": "1" } }, "sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA=="],
+
    "inherits": ["inherits@2.0.4", "", {}, "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="],

    "ini": ["ini@1.3.8", "", {}, "sha512-JV/yugV2uzW5iMRSiZAyDtQd+nxtUnjeLt0acNdw98kKLrvuRVyB80tsREOE7yvGVgalhZ6RNXCmEHkUKBKxew=="],
@@ -858,8 +888,16 @@

    "minimalistic-assert": ["minimalistic-assert@1.0.1", "", {}, "sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A=="],

+    "minimatch": ["minimatch@3.1.2", "", { "dependencies": { "brace-expansion": "^1.1.7" } }, "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw=="],
+
    "minimist": ["minimist@1.2.8", "", {}, "sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA=="],

+    "minipass": ["minipass@5.0.0", "", {}, "sha512-3FnjYuehv9k6ovOEbyOswadCDPX1piCfhV8ncmYtHOjuPwylVWsghTLo7rabjC3Rx5xD4HDx8Wm1xnMF7S5qFQ=="],
+
+    "minizlib": ["minizlib@2.1.2", "", { "dependencies": { "minipass": "^3.0.0", "yallist": "^4.0.0" } }, "sha512-bAxsR8BVfj60DWXHE3u30oHzfl4G7khkSuPW+qvpd7jFRHm7dLxOjUk1EHACJ/hxLY8phGJ0YhYHZo7jil7Qdg=="],
+
+    "mkdirp": ["mkdirp@1.0.4", "", { "bin": { "mkdirp": "bin/cmd.js" } }, "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw=="],
+
    "mkdirp-classic": ["mkdirp-classic@0.5.3", "", {}, "sha512-gKLcREMhtuZRwRAfqP3RFW+TK4JqApVBtOIftVgjuABpAtpxhPGaDcfvbhNvD0B8iD1oUr/txX35NjcaY6Ns/A=="],

    "mlly": ["mlly@1.7.4", "", { "dependencies": { "acorn": "^8.14.0", "pathe": "^2.0.1", "pkg-types": "^1.3.0", "ufo": "^1.5.4" } }, "sha512-qmdSIPC4bDJXgZTCR7XosJiNKySV7O215tsPtDN9iEO/7q/76b/ijtgRu/+epFXSJhijtTCCGp3DWS549P3xKw=="],
@@ -950,6 +988,8 @@

    "path-exists": ["path-exists@4.0.0", "", {}, "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w=="],

+    "path-is-absolute": ["path-is-absolute@1.0.1", "", {}, "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg=="],
+
    "path-key": ["path-key@3.1.1", "", {}, "sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q=="],

    "path-parse": ["path-parse@1.0.7", "", {}, "sha512-LDJzPVEEEPR+y48z93A0Ed0yXb8pAByGWo/k5YYdYgpY2/2EsOsksJrq7lOHxryrVOn1ejG6oAp8ahvOIQD8sw=="],
@@ -1030,6 +1070,8 @@

    "retry": ["retry@0.13.1", "", {}, "sha512-XQBQ3I8W1Cge0Seh+6gjj03LbmRFWuoszgK9ooCpwYIrhhoO80pfq4cUkU5DkknwfOfFteRwlZ56PYOGYyFWdg=="],

+    "rimraf": ["rimraf@3.0.2", "", { "dependencies": { "glob": "^7.1.3" }, "bin": { "rimraf": "bin.js" } }, "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA=="],
+
    "rollup-plugin-inject": ["rollup-plugin-inject@3.0.2", "", { "dependencies": { "estree-walker": "^0.6.1", "magic-string": "^0.25.3", "rollup-pluginutils": "^2.8.1" } }, "sha512-ptg9PQwzs3orn4jkgXJ74bfs5vYz1NCZlSQMBUA0wKcGp5i5pA1AO3fOUEte8enhGUC+iapTCzEWw2jEFFUO/w=="],

    "rollup-plugin-node-polyfills": ["rollup-plugin-node-polyfills@0.2.1", "", { "dependencies": { "rollup-plugin-inject": "^3.0.0" } }, "sha512-4kCrKPTJ6sK4/gLL/U5QzVT8cxJcofO0OU74tnB19F40cmuAKSzH5/siithxlofFEjwvw1YAhPmbvGNA6jEroA=="],
@@ -1136,6 +1178,8 @@

    "tapable": ["tapable@2.2.1", "", {}, "sha512-GNzQvQTOIP6RyTfE2Qxb8ZVlNmw0n88vp1szwWRimP02mnTsx3Wtn5qRdqY9w2XduFNUgvOwhNnQsjwCp+kqaQ=="],

+    "tar": ["tar@6.2.1", "", { "dependencies": { "chownr": "^2.0.0", "fs-minipass": "^2.0.0", "minipass": "^5.0.0", "minizlib": "^2.1.1", "mkdirp": "^1.0.3", "yallist": "^4.0.0" } }, "sha512-DZ4yORTwrbTj/7MZYq2w+/ZFdI6OZ/f9SFHR+71gIVUZhOQPHzVCLpvRnPgyaMpfWxxk/4ONva3GQSyNIKRv6A=="],
+
    "tar-fs": ["tar-fs@2.1.2", "", { "dependencies": { "chownr": "^1.1.1", "mkdirp-classic": "^0.5.2", "pump": "^3.0.0", "tar-stream": "^2.1.4" } }, "sha512-EsaAXwxmx8UB7FRKqeozqEPop69DXcmYwTQwXvyAPF352HJsPdkVhvTaDPYqfNgruveJIJy3TA2l+2zj8LJIJA=="],

    "tar-stream": ["tar-stream@2.2.0", "", { "dependencies": { "bl": "^4.0.3", "end-of-stream": "^1.4.1", "fs-constants": "^1.0.0", "inherits": "^2.0.3", "readable-stream": "^3.1.1" } }, "sha512-ujeqbceABgwMZxEJnk2HDY2DlnUZ+9oEcb1KzTVfYHio0UE6dG71n60d8D2I4qNvleWrrXpmjpt7vZeF1LnMZQ=="],
@@ -1212,6 +1256,8 @@

    "vary": ["vary@1.1.2", "", {}, "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="],

+    "wasm-pack": ["wasm-pack@0.13.1", "", { "dependencies": { "binary-install": "^1.0.1" }, "bin": { "wasm-pack": "run.js" } }, "sha512-P9exD4YkjpDbw68xUhF3MDm/CC/3eTmmthyG5bHJ56kalxOTewOunxTke4SyF8MTXV6jUtNjXggPgrGmMtczGg=="],
+
    "watchpack": ["watchpack@2.4.2", "", { "dependencies": { "glob-to-regexp": "^0.4.1", "graceful-fs": "^4.1.2" } }, "sha512-TnbFSbcOCcDgjZ4piURLCbJ3nJhznVh9kw6F6iokjiFPl8ONxe9A6nMDVXDiNbrSfLILs6vB07F7wLBrwPYzJw=="],

    "wbuf": ["wbuf@1.7.3", "", { "dependencies": { "minimalistic-assert": "^1.0.0" } }, "sha512-O84QOnr0icsbFGLS0O3bI5FswxzRr8/gHwWkDlQFskhSPryQXvrTMxjxGP4+iWYoauLoBvfDpkrOauZ+0iZpDA=="],
@@ -1246,7 +1292,7 @@

    "xtend": ["xtend@4.0.2", "", {}, "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="],

-    "yallist": ["yallist@2.1.2", "", {}, "sha512-ncTzHV7NvsQZkYe1DW7cbDLm0YpzHmZF5r/iyP3ZnQtMiJ+pjzisCiMNI+Sj+xQF5pXhSHxSB3uDbsBTzY/c2A=="],
+    "yallist": ["yallist@4.0.0", "", {}, "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="],

    "yauzl": ["yauzl@2.10.0", "", { "dependencies": { "buffer-crc32": "~0.2.3", "fd-slicer": "~1.1.0" } }, "sha512-p4a9I6X6nu6IhoGmBqAcbJy1mlC4j27vEPZX9F4L4/vZT3Lyq1VkFHw/V/PUcB9Buo+DG3iHkT0x3Qya58zc3g=="],

@@ -1312,6 +1358,8 @@

    "from2/readable-stream": ["readable-stream@2.3.8", "", { "dependencies": { "core-util-is": "~1.0.0", "inherits": "~2.0.3", "isarray": "~1.0.0", "process-nextick-args": "~2.0.0", "safe-buffer": "~5.1.1", "string_decoder": "~1.1.1", "util-deprecate": "~1.0.1" } }, "sha512-8p0AUk4XODgIewSi0l8Epjs+EVnWiK7NoDIEGU0HhE7+ZyY8D1IMY7odu5lRrFXGg71L15KG8QrPmum45RTtdA=="],

+    "fs-minipass/minipass": ["minipass@3.3.6", "", { "dependencies": { "yallist": "^4.0.0" } }, "sha512-DxiNidxSEK+tHG6zOIklvNOwm3hvCrbUrdtzY74U6HKTJxvIDfOUL5W5P2Ghd3DTkhhKPYGqeNUIh5qcM4YBfw=="],
+
    "get-source/source-map": ["source-map@0.6.1", "", {}, "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="],

    "got/decompress-response": ["decompress-response@3.3.0", "", { "dependencies": { "mimic-response": "^1.0.0" } }, "sha512-BzRPQuY1ip+qDonAOz42gRm/pg9F768C+npV/4JOsxRC2sq+Rlk+Q4ZCAsOhnIaMrgarILY+RMUIvMmmX1qAEA=="],
@@ -1328,12 +1376,16 @@

    "jest-worker/supports-color": ["supports-color@8.1.1", "", { "dependencies": { "has-flag": "^4.0.0" } }, "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q=="],

+    "lru-cache/yallist": ["yallist@2.1.2", "", {}, "sha512-ncTzHV7NvsQZkYe1DW7cbDLm0YpzHmZF5r/iyP3ZnQtMiJ+pjzisCiMNI+Sj+xQF5pXhSHxSB3uDbsBTzY/c2A=="],
+
    "make-dir/pify": ["pify@3.0.0", "", {}, "sha512-C3FsVNH1udSEX48gGX1xfvwTWfsYWj5U+8/uK15BGzIGrKoUpghX8hWZwa/OFnakBiiVNmBvemTJR5mcy7iPcg=="],

    "miniflare/acorn-walk": ["acorn-walk@8.3.2", "", {}, "sha512-cjkyv4OtNCIeqhHrfS81QWXoCBPExR/J62oyEqepVw8WaQeSqpW2uhuLPh1m9eWhDuOo/jUXVTlifvesOWp/4A=="],

    "miniflare/undici": ["undici@5.28.5", "", { "dependencies": { "@fastify/busboy": "^2.0.0" } }, "sha512-zICwjrDrcrUE0pyyJc1I2QzBkLM8FINsgOrt6WjA+BgajVq9Nxu2PbFFXUrAggLfDXlZGZBVZYw7WNV5KiBiBA=="],

+    "minizlib/minipass": ["minipass@3.3.6", "", { "dependencies": { "yallist": "^4.0.0" } }, "sha512-DxiNidxSEK+tHG6zOIklvNOwm3hvCrbUrdtzY74U6HKTJxvIDfOUL5W5P2Ghd3DTkhhKPYGqeNUIh5qcM4YBfw=="],
+
    "mlly/pathe": ["pathe@2.0.3", "", {}, "sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w=="],

    "normalize-url/prepend-http": ["prepend-http@2.0.0", "", {}, "sha512-ravE6m9Atw9Z/jjttRUZ+clIXogdghyZAuWJ3qEzjT+jI/dL1ifAqhZeC5VHzQp1MSt1+jxKkFNemj/iO7tVUA=="],
@@ -1368,6 +1420,8 @@

    "strip-outer/escape-string-regexp": ["escape-string-regexp@1.0.5", "", {}, "sha512-vbRorB5FUQWvla16U8R/qgaFIya2qGzwDrNmCZuYKrbdSUMG6I1ZCGQRefkRVhuOkIGVne7BQ35DSfo1qvJqFg=="],

+    "tar/chownr": ["chownr@2.0.0", "", {}, "sha512-bIomtDF5KGpdogkLd9VspvFzk9KfpyyGlS8YFVZl7TGPBHL5snIOnxeshwVgPteQ9b4Eydl+pVbIyE1DcvCWgQ=="],
+
    "tempfile/uuid": ["uuid@3.4.0", "", { "bin": { "uuid": "./bin/uuid" } }, "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A=="],

    "terser/commander": ["commander@2.20.3", "", {}, "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ=="],
--- a/package.json
+++ b/package.json
@@ -18,5 +18,8 @@
    "dev:demo": "( cd packages/demo ; npm run dev )",
    "build:demo": "( cd packages/demo ; npm run build )",
    "build:action": "( cd packages/action ; npm run build )"
-  }
+  },
+  "trustedDependencies": [
+    "wasm-pack"
+  ]
 }
--- a/packages/demo/demo.json
+++ b/packages/demo/demo.json
@@ -5,5 +5,6 @@
  "outside",
  "getPathToPose",
  "getPathTo",
-  "svg"
+  "svg",
+  "rust"
 ]
--- a/packages/demo/demo.rust.ts
+++ b/packages/demo/demo.rust.ts
@@ -0,0 +1,24 @@
+import { createCanvas } from "./canvas";
+import "./menu";
+import { grid } from "./sample";
+
+(async () => {
+	const api = await import("@snk/solver-r");
+
+	const g = api.IGrid.create(grid.width, grid.height, grid.data);
+
+	const freeCells = api.iget_free_cell(g);
+
+	{
+		const { canvas, draw, highlightCell } = createCanvas(g);
+		document.body.appendChild(canvas);
+
+		draw({ width: g.width, height: g.height, data: g.data }, [] as any, []);
+
+		for (let i = freeCells.length / 2; i--; ) {
+			const x = freeCells[i * 2 + 0];
+			const y = freeCells[i * 2 + 1];
+			highlightCell(x, y);
+		}
+	}
+})();
--- a/packages/demo/webpack.config.ts
+++ b/packages/demo/webpack.config.ts
@@ -42,6 +42,9 @@ const webpackConfiguration: WebpackConfiguration = {
    path: path.join(__dirname, "dist"),
    filename: "[contenthash].js",
  },
+  experiments: {
+    asyncWebAssembly: true,
+  },
  module: {
    rules: [
      {
--- a/packages/solver-r/.gitignore
+++ b/packages/solver-r/.gitignore
@@ -0,0 +1,2 @@
+target
+pkg
--- a/packages/solver-r/Cargo.lock
+++ b/packages/solver-r/Cargo.lock
@@ -0,0 +1,341 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "bumpalo"
+version = "3.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1628fb46dfa0b37568d12e5edd512553eccf6a22a78e8bde00bb4aed84d5bdbf"
+
+[[package]]
+name = "cc"
+version = "1.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fcb57c740ae1daf453ae85f16e37396f672b039e00d9d866e07ddb24e328e3a"
+dependencies = [
+ "shlex",
+]
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "console_error_panic_hook"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a06aeb73f470f66dcdbf7223caeebb85984942f22f1adb2a088cf9668146bbbc"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "console_log"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be8aed40e4edbf4d3b4431ab260b63fdc40f5780a4766824329ea0f1eefe3c0f"
+dependencies = [
+ "log",
+ "web-sys",
+]
+
+[[package]]
+name = "js-sys"
+version = "0.3.77"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
+dependencies = [
+ "once_cell",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "log"
+version = "0.4.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30bde2b3dc3671ae49d8e2e9f044c7c005836e7a023ee57cffa25ab82764bb9e"
+
+[[package]]
+name = "minicov"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f27fe9f1cc3c22e1687f9446c2083c4c5fc7f0bcf1c7a86bdbded14985895b4b"
+dependencies = [
+ "cc",
+ "walkdir",
+]
+
+[[package]]
+name = "once_cell"
+version = "1.21.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d75b0bedcc4fe52caa0e03d9f1151a323e4aa5e2d78ba3580400cd3c9e2bc4bc"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.94"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a31971752e70b8b2686d7e46ec17fb38dad4051d94024c88df49b667caea9c84"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1885c039570dc00dcb4ff087a89e185fd56bae234ddc7f056a945bf36467248d"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rustversion"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eded382c5f5f786b989652c49544c4877d9f015cc22e145a5ea8ea66c2921cd2"
+
+[[package]]
+name = "same-file"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "snk-solver-rust"
+version = "1.0.0"
+dependencies = [
+ "console_error_panic_hook",
+ "console_log",
+ "js-sys",
+ "log",
+ "wasm-bindgen",
+ "wasm-bindgen-test",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b09a44accad81e1ba1cd74a32461ba89dee89095ba17b32f5d03683b1b1fc2a0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
+
+[[package]]
+name = "walkdir"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
+dependencies = [
+ "same-file",
+ "winapi-util",
+]
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
+dependencies = [
+ "bumpalo",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "555d470ec0bc3bb57890405e5d4322cc9ea83cebb085523ced7be4144dac1e61"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "once_cell",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "wasm-bindgen-test"
+version = "0.3.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "66c8d5e33ca3b6d9fa3b4676d774c5778031d27a578c2b007f905acf816152c3"
+dependencies = [
+ "js-sys",
+ "minicov",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-bindgen-test-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-test-macro"
+version = "0.3.50"
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
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+checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
+dependencies = [
+ "windows-sys",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
--- a/packages/solver-r/Cargo.toml
+++ b/packages/solver-r/Cargo.toml
@@ -0,0 +1,26 @@
+[package]
+name = "snk-solver-rust"
+version = "1.0.0"
+authors = ["platane"]
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[features]
+default = ["console_error_panic_hook"]
+
+[dependencies]
+wasm-bindgen = "0.2.100"
+js-sys = "0.3.77"
+console_log = "1.0.0"
+log = "0.4"
+
+# The `console_error_panic_hook` crate provides better debugging of panics by
+# logging them with `console.error`. This is great for development, but requires
+# all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
+# code size when deploying.
+console_error_panic_hook = { version = "0.1.7", optional = true }
+
+[dev-dependencies]
+wasm-bindgen-test = "0.3.34"
--- a/packages/solver-r/package.json
+++ b/packages/solver-r/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "@snk/solver-r",
+  "version": "1.0.0",
+  "devDependencies": {
+    "wasm-pack": "0.13.1"
+  },
+  "main": "./pkg/snk_solver_rust.js",
+  "scripts": {
+    "build": "wasm-pack build"
+  }
+}
--- a/packages/solver-r/src/grid.rs
+++ b/packages/solver-r/src/grid.rs
@@ -0,0 +1,84 @@
+#[derive(Copy, Clone, Hash, Eq, PartialEq, Debug)]
+pub struct Point {
+    pub x: i8,
+    pub y: i8,
+}
+
+#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
+#[repr(u8)]
+pub enum Cell {
+    Empty = 0,
+    Color1 = 1,
+    Color2 = 2,
+    Color3 = 3,
+    Color4 = 4,
+}
+
+#[derive(Clone)]
+pub struct Grid {
+    pub width: u8,
+    pub height: u8,
+    pub cells: Vec<Cell>,
+}
+impl Grid {
+    pub fn create_empty(width: u8, height: u8) -> Grid {
+        let n = (width as usize) * (height as usize);
+        let cells = (0..n).map(|_| Cell::Empty).collect();
+
+        Grid {
+            width,
+            height,
+            cells,
+        }
+    }
+
+    pub fn get_index(&self, x: i8, y: i8) -> usize {
+        return (x as usize) * (self.height as usize) + (y as usize);
+    }
+    pub fn get_cell(&self, p: &Point) -> Cell {
+        let i = self.get_index(p.x, p.y);
+        return self.cells[i];
+    }
+    pub fn set_cell(&mut self, p: &Point, value: Cell) -> () {
+        let i = self.get_index(p.x, p.y);
+        self.cells[i] = value;
+    }
+    pub fn is_inside(&self, p: &Point) -> bool {
+        p.x >= 0 && p.x < (self.width as i8) && p.y >= 0 && p.y < (self.height as i8)
+    }
+}
+
+pub const DIRECTION_RIGHT: Point = Point { x: 1, y: 0 };
+pub const DIRECTION_LEFT: Point = Point { x: -1, y: 0 };
+pub const DIRECTION_UP: Point = Point { x: 0, y: 1 };
+pub const DIRECTION_DOWN: Point = Point { x: 0, y: -1 };
+pub const DIRECTIONS: [Point; 4] = [
+    DIRECTION_RIGHT,
+    DIRECTION_LEFT,
+    DIRECTION_UP,
+    DIRECTION_DOWN,
+];
+
+#[test]
+fn it_should_sort_cell() {
+    assert_eq!(Cell::Empty < Cell::Color1, true);
+    assert_eq!(Cell::Color1 < Cell::Color2, true);
+    assert_eq!(Cell::Color2 < Cell::Color3, true);
+    assert_eq!(Cell::Color3 < Cell::Color4, true);
+}
+#[test]
+fn it_should_grid_create() {
+    let grid = Grid::create_empty(30, 10);
+
+    assert_eq!(grid.width, 30);
+    assert_eq!(grid.height, 10);
+    assert_eq!(grid.get_cell(&Point { x: 2, y: 3 }), Cell::Empty);
+}
+#[test]
+fn it_should_grid_setter() {
+    let mut grid = Grid::create_empty(20, 10);
+
+    grid.set_cell(&Point { x: 12, y: 3 }, Cell::Color1);
+
+    assert_eq!(grid.get_cell(&Point { x: 12, y: 3 }), Cell::Color1);
+}
--- a/packages/solver-r/src/lib.rs
+++ b/packages/solver-r/src/lib.rs
@@ -0,0 +1,79 @@
+mod grid;
+mod snake;
+mod snake_compact;
+mod snake_walk;
+mod solver;
+
+use grid::{Cell, Grid};
+use js_sys;
+use solver::get_free_cell;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+extern "C" {
+    fn alert(s: &str);
+}
+
+#[wasm_bindgen]
+pub fn greet() {
+    alert("Hello, wasm-game-of-life!");
+}
+
+#[wasm_bindgen]
+#[derive(Clone)]
+pub struct IGrid {
+    pub width: u8,
+    pub height: u8,
+    cells: Vec<Cell>,
+}
+
+#[wasm_bindgen]
+impl IGrid {
+    pub fn create(width: u8, height: u8, data: js_sys::Uint8Array) -> IGrid {
+        let cells = data
+            .to_vec()
+            .iter()
+            .map(|u| match u {
+                0 => Cell::Empty,
+                1 => Cell::Color1,
+                2 => Cell::Color2,
+                3 => Cell::Color3,
+                4 => Cell::Color4,
+                _ => panic!("unknown cell"),
+            })
+            .collect();
+
+        IGrid {
+            width,
+            height,
+            cells,
+        }
+    }
+
+    #[wasm_bindgen(getter)]
+    pub fn data(&self) -> js_sys::Uint8Array {
+        let o: Vec<u8> = self.cells.iter().map(|u| *u as u8).collect();
+        js_sys::Uint8Array::from(&o[..])
+    }
+}
+
+impl From<IGrid> for Grid {
+    fn from(value: IGrid) -> Self {
+        Self {
+            width: value.width,
+            height: value.height,
+            cells: value.cells,
+        }
+    }
+}
+
+#[wasm_bindgen]
+pub fn iget_free_cell(grid: &IGrid) -> js_sys::Uint8Array {
+    let g = Grid::from(grid.clone());
+
+    let (_, out) = get_free_cell(&g, Cell::Color1);
+
+    let o: Vec<u8> = out.iter().flat_map(|p| [p.x as u8, p.y as u8]).collect();
+
+    js_sys::Uint8Array::from(&o[..])
+}
--- a/packages/solver-r/src/snake.rs
+++ b/packages/solver-r/src/snake.rs
@@ -0,0 +1,95 @@
+use crate::grid::{Point, DIRECTIONS, DIRECTION_DOWN, DIRECTION_LEFT, DIRECTION_UP};
+
+/**
+*  head is at 0
+*/
+pub type Snake = Vec<Point>;
+
+pub fn move_snake(s: &mut Snake, dir: &Point) -> () {
+    let mut e = s.pop().unwrap();
+    e.x = s[0].x + dir.x;
+    e.y = s[0].y + dir.y;
+    s.insert(0, e);
+}
+pub fn snake_will_self_collide(s: &Snake, dir: &Point) -> bool {
+    let next_head = Point {
+        x: s[0].x + dir.x,
+        y: s[0].y + dir.y,
+    };
+
+    (&s[0..(s.len() - 1)]).contains(&next_head)
+}
+pub fn get_snake_head(s: &Snake) -> Point {
+    s[0]
+}
+pub fn get_next_snake_head(s: &Snake, dir: &Point) -> Point {
+    Point {
+        x: s[0].x + dir.x,
+        y: s[0].y + dir.y,
+    }
+}
+
+#[test]
+fn it_should_return_head() {
+    let s = vec![
+        //
+        Point { x: 3, y: 0 },
+        Point { x: 2, y: 0 },
+        Point { x: 1, y: 0 },
+    ];
+
+    assert_eq!(get_snake_head(&s), Point { x: 3, y: 0 });
+}
+#[test]
+fn it_should_detect_self_collide() {
+    let mut s = vec![
+        //
+        Point { x: 6, y: 0 },
+        Point { x: 5, y: 0 },
+        Point { x: 4, y: 0 },
+        Point { x: 3, y: 0 },
+        Point { x: 2, y: 0 },
+        Point { x: 1, y: 0 },
+    ];
+
+    move_snake(&mut s, &DIRECTION_UP);
+    move_snake(&mut s, &DIRECTION_LEFT);
+
+    assert_eq!(snake_will_self_collide(&s, &DIRECTION_DOWN), true);
+
+    move_snake(&mut s, &DIRECTION_LEFT);
+
+    assert_eq!(snake_will_self_collide(&s, &DIRECTION_DOWN), false);
+}
+#[test]
+fn it_should_detect_self_collide_2() {
+    let s = vec![
+        //
+        Point { x: 3, y: 0 },
+        Point { x: 2, y: 0 },
+        Point { x: 1, y: 0 },
+    ];
+
+    assert_eq!(snake_will_self_collide(&s, &DIRECTION_LEFT), true);
+}
+#[test]
+fn it_should_move_snake() {
+    let mut s = vec![
+        //
+        Point { x: 3, y: 0 },
+        Point { x: 2, y: 0 },
+        Point { x: 1, y: 0 },
+    ];
+
+    move_snake(&mut s, &DIRECTION_UP);
+
+    assert_eq!(
+        s,
+        vec![
+            //
+            Point { x: 3, y: 1 },
+            Point { x: 3, y: 0 },
+            Point { x: 2, y: 0 },
+        ]
+    );
+}
--- a/packages/solver-r/src/snake_compact.rs
+++ b/packages/solver-r/src/snake_compact.rs
@@ -0,0 +1,176 @@
+use crate::grid::Point;
+
+#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
+pub enum Direction {
+    Left = 0,
+    Right = 1,
+    Up = 2,
+    Down = 3,
+}
+
+fn get_direction_vector(dir: Direction) -> Point {
+    match dir {
+        Direction::Down => Point { x: 0, y: -1 },
+        Direction::Up => Point { x: 0, y: 1 },
+        Direction::Left => Point { x: -1, y: 0 },
+        Direction::Right => Point { x: 1, y: 0 },
+    }
+}
+fn get_direction_from_vector(v: &Point) -> Direction {
+    match v {
+        Point { x: 0, y: -1 } => Direction::Down,
+        Point { x: 0, y: 1 } => Direction::Up,
+        Point { x: -1, y: 0 } => Direction::Left,
+        Point { x: 1, y: 0 } => Direction::Right,
+        _ => panic!(),
+    }
+}
+
+#[derive(Clone)]
+pub struct SnakeC {
+    pub head: Point,
+    pub body: Vec<Direction>,
+}
+impl SnakeC {
+    pub fn get_cells(&self) -> Vec<Point> {
+        let mut e = self.head.clone();
+        let mut out = Vec::new();
+
+        out.push(e.clone());
+        for dir in self.body.iter() {
+            let v = get_direction_vector(*dir);
+            e.x -= v.x;
+            e.y -= v.y;
+            out.push(e.clone());
+        }
+
+        out
+    }
+
+    pub fn is_head_self_colliding(&self) -> bool {
+        self.get_cells()[1..].contains(&self.head)
+    }
+
+    pub fn advance(&mut self, dir: Direction) -> () {
+        let v = get_direction_vector(dir);
+
+        self.head.x += v.x;
+        self.head.y += v.y;
+
+        self.body.pop();
+        self.body.insert(0, dir);
+    }
+}
+
+impl From<Vec<Point>> for SnakeC {
+    fn from(value: Vec<Point>) -> Self {
+        let head = value.get(0).unwrap().clone();
+        let body = value
+            .windows(2)
+            .map(|w| {
+                let v = Point {
+                    x: w[0].x - w[1].x,
+                    y: w[0].y - w[1].y,
+                };
+                get_direction_from_vector(&v)
+            })
+            .collect();
+
+        Self { head, body }
+    }
+}
+
+#[test]
+fn it_should_get_the_snake_cell() {
+    let s = SnakeC {
+        head: Point { x: 10, y: 5 },
+        body: vec![Direction::Up, Direction::Up, Direction::Left],
+    };
+
+    assert_eq!(
+        s.get_cells(),
+        vec![
+            //
+            Point { x: 10, y: 5 },
+            Point { x: 10, y: 4 },
+            Point { x: 10, y: 3 },
+            Point { x: 11, y: 3 },
+        ]
+    );
+}
+
+#[test]
+fn it_should_get_snake_from_point_list() {
+    let s = SnakeC::from(vec![
+        //
+        Point { x: 10, y: 5 },
+        Point { x: 10, y: 4 },
+        Point { x: 10, y: 3 },
+        Point { x: 11, y: 3 },
+        Point { x: 12, y: 3 },
+        Point { x: 12, y: 2 },
+    ]);
+
+    assert_eq!(
+        s.get_cells(),
+        vec![
+            //
+            Point { x: 10, y: 5 },
+            Point { x: 10, y: 4 },
+            Point { x: 10, y: 3 },
+            Point { x: 11, y: 3 },
+            Point { x: 12, y: 3 },
+            Point { x: 12, y: 2 },
+        ]
+    );
+}
+
+#[test]
+fn it_should_advance_snake() {
+    let mut s = SnakeC::from(vec![
+        //
+        Point { x: 10, y: 3 },
+        Point { x: 11, y: 3 },
+        Point { x: 12, y: 3 },
+        Point { x: 12, y: 2 },
+    ]);
+
+    s.advance(Direction::Up);
+
+    assert_eq!(
+        s.get_cells(),
+        vec![
+            //
+            Point { x: 10, y: 4 },
+            Point { x: 10, y: 3 },
+            Point { x: 11, y: 3 },
+            Point { x: 12, y: 3 },
+        ]
+    );
+}
+
+#[test]
+fn it_should_detect_self_collision() {
+    let mut s = SnakeC::from(vec![
+        //
+        Point { x: 0, y: 0 },
+        Point { x: 0, y: 1 },
+        Point { x: 0, y: 2 },
+        Point { x: 0, y: 3 },
+        Point { x: 0, y: 4 },
+        Point { x: 0, y: 5 },
+        Point { x: 0, y: 6 },
+    ]);
+
+    assert_eq!(s.is_head_self_colliding(), false);
+
+    s.advance(Direction::Right);
+    s.advance(Direction::Up);
+    s.advance(Direction::Up);
+
+    assert_eq!(s.is_head_self_colliding(), false);
+
+    s.advance(Direction::Left);
+
+    assert_eq!(s.is_head_self_colliding(), true);
+}
--- a/packages/solver-r/src/snake_walk.rs
+++ b/packages/solver-r/src/snake_walk.rs
@@ -0,0 +1,58 @@
+use std::collections::HashSet;
+
+use crate::grid::{Cell, Grid, Point, DIRECTIONS};
+use crate::snake::{
+    get_next_snake_head, get_snake_head, move_snake, snake_will_self_collide, Snake,
+};
+
+pub fn get_route_to_eat_all(
+    grid: &Grid,
+    walkable: Cell,
+    initial_snake: &Snake,
+    cells_to_eat: HashSet<Point>,
+) -> Vec<Point> {
+    // let mut targets: Vec<Point> = cells_to_eat.iter().map(|p| p.clone()).collect();
+
+    let mut targets: Vec<&Point> = cells_to_eat.iter().collect();
+
+    let mut path: Vec<Point> = Vec::new();
+
+    let mut initial_snake = initial_snake.clone();
+
+    while let Some(target) = targets.pop() {
+        // prepare
+        let mut open_list: HashSet<(Snake, Vec<Point>)> = HashSet::new();
+        open_list.insert((initial_snake.clone(), Vec::new()));
+
+        while let Some(x) = open_list.iter().next().cloned() {
+            open_list.remove(&x);
+
+            let snake = x.0;
+            let mut sub_path = x.1;
+
+            if get_snake_head(&snake) == *target {
+                path.append(&mut sub_path);
+                initial_snake = snake;
+                break;
+            }
+
+            for dir in DIRECTIONS {
+                if {
+                    let h = get_next_snake_head(&snake, &dir);
+                    grid.get_cell(&h) <= walkable
+                } && !snake_will_self_collide(&snake, &dir)
+                {
+                    let mut next_snake = snake.clone();
+                    move_snake(&mut next_snake, &dir);
+
+                    let mut next_sub_path = sub_path.clone();
+                    next_sub_path.push(dir.clone());
+
+                    open_list.insert((next_snake, next_sub_path));
+                }
+            }
+        }
+    }
+
+    path
+}
--- a/packages/solver-r/src/solver.rs
+++ b/packages/solver-r/src/solver.rs
@@ -0,0 +1,127 @@
+use std::collections::HashSet;
+
+use crate::grid::{Cell, Grid, Point};
+
+pub fn get_free_cell(grid: &Grid, walkable: Cell) -> (HashSet<Point>, HashSet<Point>) {
+    let mut free_cells: HashSet<Point> = HashSet::new();
+    let mut one_way_cells: HashSet<Point> = HashSet::new();
+    let mut open_list: HashSet<Point> = HashSet::new();
+
+    for x in 0..(grid.width as i8) {
+        open_list.insert(Point { x, y: 0 });
+        open_list.insert(Point {
+            x,
+            y: (grid.height as i8) - 1,
+        });
+    }
+    for y in 0..(grid.height as i8) {
+        open_list.insert(Point { x: 0, y });
+        open_list.insert(Point {
+            x: (grid.width as i8) - 1,
+            y,
+        });
+    }
+    open_list.retain(|p| grid.get_cell(&p) <= walkable);
+
+    let directions = [
+        Point { x: 1, y: 0 },
+        Point { x: -1, y: 0 },
+        Point { x: 0, y: 1 },
+        Point { x: 0, y: -1 },
+    ];
+
+    while let Some(p) = open_list.iter().next().cloned() {
+        open_list.remove(&p);
+
+        let has_enough_free_exits = {
+            let mut exit_count = 0;
+            let mut visited: HashSet<Point> = HashSet::new();
+
+            for dir in directions {
+                let neighbour = Point {
+                    x: p.x + dir.x,
+                    y: p.y + dir.y,
+                };
+
+                if !visited.contains(&neighbour)
+                    && (free_cells.contains(&neighbour) || !grid.is_inside(&neighbour))
+                {
+                    visited.insert(neighbour);
+                    exit_count += 1;
+                }
+
+                if grid.is_inside(&neighbour) && grid.get_cell(&neighbour) <= walkable {
+                    for alt in [-1, 1] {
+                        let corner = {
+                            if neighbour.x != 0 {
+                                Point {
+                                    x: neighbour.x,
+                                    y: neighbour.y + alt,
+                                }
+                            } else {
+                                Point {
+                                    x: neighbour.x + alt,
+                                    y: neighbour.y,
+                                }
+                            }
+                        };
+
+                        if !visited.contains(&neighbour)
+                            && !visited.contains(&corner)
+                            && (free_cells.contains(&corner) || !grid.is_inside(&corner))
+                        {
+                            visited.insert(neighbour);
+                            visited.insert(corner);
+                            exit_count += 1;
+                        }
+                    }
+                }
+            }
+
+            exit_count >= 2
+        };
+
+        if has_enough_free_exits {
+            free_cells.insert(p);
+
+            for dir in directions {
+                let neighbour = Point {
+                    x: p.x + dir.x,
+                    y: p.y + dir.y,
+                };
+
+                if !free_cells.contains(&neighbour)
+                    && grid.is_inside(&neighbour)
+                    && grid.get_cell(&neighbour) <= walkable
+                {
+                    open_list.insert(neighbour);
+                }
+            }
+        } else {
+            one_way_cells.insert(p);
+        }
+    }
+
+    one_way_cells.retain(|p| !free_cells.contains(&p));
+
+    (free_cells, one_way_cells)
+}
+
+#[test]
+fn it_should_collect_free_cell() {
+    let mut grid = Grid::create_empty(2, 2);
+
+    grid.set_cell(&Point { x: 1, y: 1 }, Cell::Color2);
+
+    let (free_cells, _) = get_free_cell(&grid, Cell::Color1);
+
+    assert_eq!(
+        free_cells,
+        HashSet::from([
+            //
+            Point { x: 0, y: 0 },
+            Point { x: 0, y: 1 },
+            Point { x: 1, y: 0 },
+        ])
+    );
+}
--- a/packages/types/fixtures/grid.ts
+++ b/packages/types/fixtures/grid.ts
@@ -84,6 +84,12 @@ export const tunnels = createFromAscii(`
  #.#   #.#   #.#
  #.#   ###   # #
 `);
+export const line = createFromAscii(`
+
+  #######  
+     .. #
+  ##### #
+`);

 const createRandom = (width: number, height: number, emptyP: number) => {
  const grid = createEmptyGrid(width, height);
Author	SHA1	Message	Date
platane	d7ef7da9fb	.	2025-03-24 22:01:03 +01:00
platane	db283098a9	.	2025-03-24 21:23:51 +01:00
platane	621d78be60	.	2025-03-24 21:23:37 +01:00
platane	42f5b68655	.	2025-03-23 15:24:13 +01:00
platane	c135277bdf	.	2025-03-23 14:33:58 +01:00
platane	34d5617f54	.	2025-03-23 13:45:30 +01:00
platane	be9fca7f10	.	2025-03-23 12:00:49 +01:00
platane	c0a042d6b4	.	2025-03-23 11:24:57 +01:00
platane	85e229a04d	.	2025-03-23 10:32:07 +01:00
platane	da5e045399	add tests	2025-03-23 10:31:17 +01:00
platane	c22b80d02b	.	2025-03-22 16:50:10 +01:00
platane	3db2b4069e	wasm	2025-03-22 15:58:46 +01:00