added leaderboard (closes #29)

.gitignore

@@ -5,4 +5,5 @@ public/css/*.css
 public/js/*.js
 public/favicon.ico
 build/*.png
+db.sqlite
 

Dockerfile

@@ -1,3 +1,3 @@
 FROM alpine:3.11.5
-RUN apk add --no-cache nodejs npm git imagemagick make && git clone https://gitdab.com/Codinget/Snek /snek && cd /snek && npm i && make && apk del git make imagemagick && printf '#!/bin/sh\ncd /snek\nnpm start\n' > start.sh && chmod +x start.sh
+RUN apk add --no-cache nodejs npm git imagemagick make python3 python2 && npm i -g node-gyp && git clone https://gitdab.com/Codinget/Snek /snek && cd /snek && npm i --unsafe-perm && apk del git make imagemagick python2 python3 && printf '#!/bin/sh\ncd /snek\nnpm start\n' > start.sh && chmod +x start.sh
 CMD /snek/start.sh

README.md

@@ -20,11 +20,11 @@ A "simple" Snake, done as my final JS class project
 - Make
 - Node.js and npm, both in the PATH
 	- Node.js 10 and 12 are known to work
+	- node-gyp and python are required for the database
 
 ## Running the game (dev)
 - `git clone` this repo
-- `npm install` the dependencies
+- `npm install` the dependencies (this will also build the ressources and initialize the database)
-- `make` the ressources
 - `npm start` the server
 
 ## Running the game (prod)

api.js

@@ -0,0 +1,103 @@
+const DB=require('better-sqlite3');
+const {Router}=require('express');
+
+const db=new DB('db.sqlite');
+const api=new Router();
+
+const leaderboardSelect='SELECT username, score, length, time, speed FROM leaderboards';
+const getLeaderboardsBy={
+	score: db.prepare(`${leaderboardSelect} WHERE mode=? ORDER BY score DESC LIMIT ? OFFSET ?`),
+	timeA: db.prepare(`${leaderboardSelect} WHERE mode=? ORDER BY time  ASC  LIMIT ? OFFSET ?`),
+	timeD: db.prepare(`${leaderboardSelect} WHERE mode=? ORDER BY time  DESC LIMIT ? OFFSET ?`)
+};
+const addLeaderboard=db.prepare(`
+	INSERT
+		INTO leaderboards(mode, username, score, length, time, speed)
+		VALUES(@mode, @username, @score, @length, @time, @speed)
+`);
+
+const levelList=require('./assets/levelList.json');
+const validMode=mode => {
+	try {
+		const [category, name]=mode.split('/');
+		return levelList[category].levels.map(l => ''+l).includes(name);
+	} catch(e) {
+		return false;
+	}
+};
+
+api.get('/leaderboards/:category/:id', (req, res) => {
+	const sort=req.query.sort || 'score';
+	if(!['score', 'timeA', 'timeD'].includes(sort)) return res.status(400).json({
+		ok: false,
+		err: 'Invalid sort'
+	});
+	const results=+req.query.results || 20;
+	if((typeof results)!='number' || results<1 || results >100) return res.status(400).json({
+		ok: false,
+		err: 'Invalid result count'
+	});
+	const page=+req.query.page || 1;
+	if((typeof page)!='number' || page<1) return res.status(400).json({
+		ok: false,
+		err: 'Invalid page'
+	});
+
+	const data=getLeaderboardsBy[sort]
+		.all(req.params.category+'/'+req.params.id, results, (page-1)*results);
+	return res.status(200).json({
+		ok: true,
+		data
+	});
+});
+
+api.post('/leaderboards/:category/:id', (req, res) => {
+	const mode=req.params.category+'/'+req.params.id;
+	if((typeof mode)!='string' || !validMode(mode)) return res.status(400).json({
+		ok: false,
+		err: 'Invalid mode'
+	});
+	const username=req.body.username;
+	if((typeof username)!='string') return res.status(400).json({
+		ok: false,
+		err: 'Invalid username'
+	});
+	const score=req.body.score;
+	if((typeof score)!='number' || score%1 || score<0) return res.status(400).json({
+		ok: false,
+		err: 'Invalid score'
+	});
+	const length=req.body.length;
+	if((typeof length)!='number' || length%1 || length<1) return res.status(400).json({
+		ok: false,
+		err: 'Invalid length'
+	});
+	const time=req.body.time;
+	if((typeof time)!='number' || time%1 || time<0) return res.status(400).json({
+		ok: false,
+		err: 'Invalid time'
+	});
+	const speed=req.body.speed;
+	if((typeof speed)!='number' || speed%1 || speed<1) return res.status(400).json({
+		ok: false,
+		err: 'Invalid speed'
+	});
+
+	try {
+		addLeaderboard.run({
+			mode, username,
+			score, length,
+			time, speed
+		});
+		res.json({
+			ok: true
+		});
+	} catch(e) {
+		res.status(500).json({
+			ok: false,
+			err: 'Failed to add score'
+		});
+	}
+});
+
+return module.exports=exports=api;

assets/config.json

@@ -1,5 +1,6 @@
 {
 	"player.name": "Player",
+	"player.leaderboards": false,
 
 	"input.touchscreen.crosspad.enabled": false,
 	"input.touchscreen.crosspad.overlay": true,

assets/levelList.json

@@ -6,7 +6,9 @@
 			"speedIncrease": false,
 			"worldWrap": false,
 			"winCondition": "fruit",
-			"scoreSystem": "speedrun"
+			"scoreSystem": "speedrun",
+			"uploadOnDeath": false,
+			"leaderboardsSort": "timeA"
 		},
 		"levelFilename": "level<n>.json",
 		"levelDisplay": "Level <n>",
@@ -22,7 +24,9 @@
 			"speedIncrease": true,
 			"speedMultiplier": 0.9,
 			"speedCap": 50,
-			"worldWrap": true
+			"worldWrap": true,
+			"uploadOnDeath": true,
+			"leaderboardsSort": "score"
 		},
 		"levelFilename": "arcade-<l>.json",
 		"levelDisplay": "<n>",

assets/metaConfig.json

@@ -6,6 +6,11 @@
 		"name": "Player name",
 		"type": "string"
 	},
+	"player.leaderboards": {
+		"name": "Upload scores to leaderboards",
+		"type": "boolean",
+		"needsBackend": true
+	},
 
 	"input": {
 		"name": "Input settings"

index.js

@@ -3,8 +3,14 @@ const express=require('express');
 const app=express();
 const PORT=process.env.PORT || 3000;
 
+app.use(express.json());
 app.use(express.static('public'));
+
+app.use('/api', require('./api'));
+app.get('/api/has-nodejs', (req, res) => {
+	res.json("yes");
+});
+
 app.listen(PORT, () => {
 	console.log(`Listening on 0.0.0.0:${PORT}`);
 });
-

init.sql

@@ -0,0 +1,8 @@
+CREATE TABLE leaderboards (
+	mode TEXT,
+	username TEXT,
+	score INTEGER,
+	length INTEGER,
+	time INTEGER,
+	speed INTEGER
+);

install.js

@@ -0,0 +1,5 @@
+const DB=require('better-sqlite3');
+const fs=require('fs');
+
+const db=new DB('db.sqlite');
+db.exec(fs.readFileSync('init.sql', 'utf8'));

levels/arcade-survival.json

@@ -44,6 +44,7 @@
 		"autoSpeadIncreaseTicks": 10,
 		"autoSizeGrow": true,
 		"autoSizeGrowTicks": 100,
-		"scoreSystem": "survival"
+		"scoreSystem": "survival",
+		"leaderboardsSort": "timeD"
 	}
 }

package-lock.json

@@ -25,6 +25,25 @@
         "uri-js": "^4.2.2"
       }
     },
+    "ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+    },
+    "aproba": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
+      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw=="
+    },
+    "are-we-there-yet": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
+      "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
+      "requires": {
+        "delegates": "^1.0.0",
+        "readable-stream": "^2.0.6"
+      }
+    },
     "array-flatten": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
@@ -69,6 +88,11 @@
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       "optional": true
     },
+    "base64-js": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.3.1.tgz",
+      "integrity": "sha512-mLQ4i2QO1ytvGWFWmcngKO//JXAQueZvwEKtjgQFM4jIK0kU+ytMfplL8j+n5mspOfjHwoAg+9yhb7BwAHm36g=="
+    },
     "bcrypt-pbkdf": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
@@ -78,6 +102,52 @@
         "tweetnacl": "^0.14.3"
       }
     },
+    "better-sqlite3": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/better-sqlite3/-/better-sqlite3-6.0.1.tgz",
+      "integrity": "sha512-4aV1zEknM9g1a6B0mVBx1oIlmYioEJ8gSS3J6EpN1b1bKYEE+N5lmpmXHKNKTi0qjHziSd7XrXwHl1kpqvEcHQ==",
+      "requires": {
+        "bindings": "^1.5.0",
+        "integer": "^3.0.1",
+        "prebuild-install": "^5.3.3",
+        "tar": "4.4.10"
+      }
+    },
+    "bindings": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
+      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
+      "requires": {
+        "file-uri-to-path": "1.0.0"
+      }
+    },
+    "bl": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-4.0.2.tgz",
+      "integrity": "sha512-j4OH8f6Qg2bGuWfRiltT2HYGx0e1QcBTrK9KAHNMwMZdQnDZFk0ZSYIpADjYCB3U12nicC5tVJwSIhwOWjb4RQ==",
+      "requires": {
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
+      },
+      "dependencies": {
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
+        }
+      }
+    },
     "body-parser": {
       "version": "1.19.0",
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
@@ -95,6 +165,15 @@
         "type-is": "~1.6.17"
       }
     },
+    "buffer": {
+      "version": "5.5.0",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.5.0.tgz",
+      "integrity": "sha512-9FTEDjLjwoAkEwyMGDjYJQN2gfRgOKBKRfiglhvibGbpeeU/pQn1bJxQqm32OD/AIeEuHxU9roxXxg34Byp/Ww==",
+      "requires": {
+        "base64-js": "^1.0.2",
+        "ieee754": "^1.1.4"
+      }
+    },
     "bytes": {
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       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -106,11 +185,21 @@
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
       "optional": true
     },
+    "chownr": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
+      "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg=="
+    },
     "clone": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/clone/-/clone-2.1.2.tgz",
       "integrity": "sha1-G39Ln1kfHo+DZwQBYANFoCiHQ18="
     },
+    "code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
+    },
     "combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -120,6 +209,11 @@
         "delayed-stream": "~1.0.0"
       }
     },
+    "console-control-strings": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
+      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4="
+    },
     "content-disposition": {
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.3.tgz",
@@ -146,8 +240,7 @@
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
-      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
-      "optional": true
     },
     "dashdash": {
       "version": "1.14.1",
@@ -166,12 +259,30 @@
         "ms": "2.0.0"
       }
     },
+    "decompress-response": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-4.2.1.tgz",
+      "integrity": "sha512-jOSne2qbyE+/r8G1VU+G/82LBs2Fs4LAsTiLSHOCOMZQl2OKZ6i8i4IyHemTe+/yIXOtTcRQMzPcgyhoFlqPkw==",
+      "requires": {
+        "mimic-response": "^2.0.0"
+      }
+    },
+    "deep-extend": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+      "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA=="
+    },
     "delayed-stream": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
       "optional": true
     },
+    "delegates": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
+      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
+    },
     "depd": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
@@ -182,6 +293,11 @@
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       "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
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+    "detect-libc": {
+      "version": "1.0.3",
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+      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups="
+    },
     "ecc-jsbn": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
@@ -202,6 +318,14 @@
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       "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
     },
+    "end-of-stream": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
+      "integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
+      "requires": {
+        "once": "^1.4.0"
+      }
+    },
     "errno": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/errno/-/errno-0.1.7.tgz",
@@ -221,6 +345,11 @@
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
       "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
     },
+    "expand-template": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/expand-template/-/expand-template-2.0.3.tgz",
+      "integrity": "sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg=="
+    },
     "express": {
       "version": "4.17.1",
       "resolved": "https://registry.npmjs.org/express/-/express-4.17.1.tgz",
@@ -282,6 +411,11 @@
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       "optional": true
     },
+    "file-uri-to-path": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz",
+      "integrity": "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw=="
+    },
     "finalhandler": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
@@ -323,6 +457,34 @@
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       "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
     },
+    "fs-constants": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs-constants/-/fs-constants-1.0.0.tgz",
+      "integrity": "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow=="
+    },
+    "fs-minipass": {
+      "version": "1.2.7",
+      "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.7.tgz",
+      "integrity": "sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==",
+      "requires": {
+        "minipass": "^2.6.0"
+      }
+    },
+    "gauge": {
+      "version": "2.7.4",
+      "resolved": "https://registry.npmjs.org/gauge/-/gauge-2.7.4.tgz",
+      "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
+      "requires": {
+        "aproba": "^1.0.3",
+        "console-control-strings": "^1.0.0",
+        "has-unicode": "^2.0.0",
+        "object-assign": "^4.1.0",
+        "signal-exit": "^3.0.0",
+        "string-width": "^1.0.1",
+        "strip-ansi": "^3.0.1",
+        "wide-align": "^1.1.0"
+      }
+    },
     "getpass": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz",
@@ -332,6 +494,11 @@
         "assert-plus": "^1.0.0"
       }
     },
+    "github-from-package": {
+      "version": "0.0.0",
+      "resolved": "https://registry.npmjs.org/github-from-package/-/github-from-package-0.0.0.tgz",
+      "integrity": "sha1-l/tdlr/eiXMxPyDoKI75oWf6ZM4="
+    },
     "graceful-fs": {
       "version": "4.2.3",
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.3.tgz",
@@ -354,6 +521,11 @@
         "har-schema": "^2.0.0"
       }
     },
+    "has-unicode": {
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+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+    },
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
@@ -812,6 +1263,29 @@
         "core-util-is": "1.0.2",
         "extsprintf": "^1.2.0"
       }
+    },
+    "which-pm-runs": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/which-pm-runs/-/which-pm-runs-1.0.0.tgz",
+      "integrity": "sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs="
+    },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
+    "yallist": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
+      "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="
     }
   }
 }

package.json

@@ -4,9 +4,8 @@
   "description": "A simple Snake",
   "main": "index.js",
   "scripts": {
-    "build": "make",
     "start": "node index.js",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "prepare": "rm -f db.sqlite && make clean all && node install.js"
   },
   "repository": {
     "type": "git",
@@ -15,6 +14,7 @@
   "author": "Codinget",
   "license": "MIT",
   "dependencies": {
+    "better-sqlite3": "^6.0.1",
     "express": "^4.17.1",
     "less": "^3.11.1"
   }

public/index.html

@@ -10,15 +10,16 @@
 			window.addEventListener('load', () => require('main'));
 		</script>
 	</head>
-	<body>
+	<body class="loading">
 		<header>
 			<a href="#"><img src="assets/icon256.png"></a>
 			<h1>Snek</h1>
 			<h2>A "simple" Snake</h2>
 			<ul>
 				<li><a href="#">Menu</a></li>
-				<li><a href="#settings">Config</a></li>
+				<li class="loaded"><a href="#settings">Config</a></li>
-				<li><a href="#help">Help</a></li>
+				<li class="loaded"><a href="#help">Help</a></li>
+				<li class="server loaded"><a href="#leaderboards">Leaderboards</a></li>
 			</ul>
 		</header>
 		<main>
@@ -34,8 +35,13 @@
 		</main>
 		<footer>
 			<img src="assets/icon32.png">
-			<p>Snek by <a href="https://codinget.me">Codinget</a> on <a href="https://gitdab.com/Codinget/Snek">GitDab</a></p>
+			<p>
-			<p>Original <a href="https://perso.liris.cnrs.fr/pierre-antoine.champin/enseignement/intro-js/s6.html">subject</a> by <a href="https://perso.liris.cnrs.fr/pierre-antoine.champin/">P.A. Champin</a></p>
+				Snek by <a href="https://codinget.me">Codinget</a> on <a href="https://gitdab.com/Codinget/Snek">GitDab</a>
+				<span class="serverless loaded">running without Nodejs backend</span>
+			</p>
+			<p>
+				Original <a href="https://perso.liris.cnrs.fr/pierre-antoine.champin/enseignement/intro-js/s6.html">subject</a> by <a href="https://perso.liris.cnrs.fr/pierre-antoine.champin/">P.A. Champin</a>
+			</p>
 		</footer>
 	</body>
 </html>

src/js/configEditor.js

@@ -63,22 +63,34 @@ class ConfigEditor extends Popup {
 				this.addContent(span);
 
 				if(data.excludes) {
-					const setEnabled=() =>
+					const setEnabled=() => {
 						input.disabled=
 							data.excludes
-								.some(key => config.getB(key))
+								.some(key => config.getB(key));
+						input.title=input.disabled?`Disable ${data.excludes.join(',')} to enable`:'';
+					};
 
 					setEnabled();
 					data.excludes.forEach(key => {
 						let c=config.watchB(key, setEnabled);
 						this.watchers.push([key, c]);
 					});
-				}
+				} else if(data.parent) {
-				if(data.parent) {
+					const setEnabled=() => {
 						input.disabled=!config.getB(data.parent);
-					let c=config.watchB(data.parent, (k, v) => input.disabled=!v);
+						input.title=input.disabled?`Enable ${data.parent} to enable`:'';
+					};
+
+					setEnabled();
+					let c=config.watchB(data.parent, setEnabled);
 					this.watchers.push([data.parent, c]);
 				}
+				if(data.needsBackend) {
+					if(window.serverless) {
+						input.disabled=true;
+						input.title="Needs backend";
+					}
+				}
 			}
 		}
 

src/js/leaderboards.js

@@ -0,0 +1,109 @@
+const Popup=require('popup');
+const levels=require('levels');
+const config=require('config');
+
+const upload=async (mode, win, snek) => {
+	if(!win && !snek.rules.uploadOnDeath) return;
+	if(window.serverless) return;
+
+	const username=config.getS('player.name');
+	const score=snek.score;
+	const length=snek.length;
+	const time=snek.endPlayTime;
+	const speed=snek.speed;
+
+	const rst=await fetch('api/leaderboards/'+mode, {
+		method: 'POST',
+		headers: {
+			'Content-Type': 'application/json'
+		},
+		body: JSON.stringify({
+			username,
+			score, length,
+			time, speed
+		})
+	});
+	const dat=await rst.json();
+	if(!dat.ok) console.error(rst.err);
+};
+
+const show=async (mode='speedrun/1', page=1) => {
+	let popup=new Popup("Leaderboards: "+mode);
+
+	const [category, id]=mode.split('/');
+	let modes=[];
+	(() => {
+		Object.keys(window.levelList).forEach(cat => {
+			window.levelList[cat].levels.forEach(lvl => {
+				modes.push(cat+'/'+lvl);
+			});
+		});
+	})();
+	const prevMode=() => {
+		let idx=modes.indexOf(mode);
+		return modes[idx-1]||modes[modes.length-1];
+	};
+	const nextMode=() => {
+		let idx=modes.indexOf(mode);
+		return modes[idx+1]||modes[0];
+	};
+
+	const rules=await levels.getRules(category, id);
+	const sort=rules.leaderboardsSort;
+	const rst=await fetch('api/leaderboards/'+mode+'?sort='+sort+'&page='+page+'&results=10');
+	const {ok, data, err}=await rst.json();
+
+	popup.buttons.close="Close";
+	popup.buttons.modeP="Previous mode";
+	popup.buttons.modeN="Next mode";
+	popup.large=true;
+	popup.animation=false;
+
+	if(ok) {
+		popup.addStrong("Page "+page);
+		if(data.length==10) popup.buttons.next="Next page";
+		if(page>1) popup.buttons.prev="Previous page";
+
+		if(data.length==0) {
+			popup.addEm("No data");
+		} else {
+			const rpad=(n, digits=2, pad=' ') =>
+				((''+n).length>=digits)?(''+n):(rpad(pad+n, digits, pad));
+
+			popup.addTable(data.map(({username, score, length, speed, time}, i) => {
+				return {
+					rank: '#'+(i+(page-1)*10+1),
+					username,
+					score: score+'pts',
+					length,
+					speed: speed+'tps',
+					time: rpad(Math.floor(time/60000), 2, '0')+
+						':'+rpad(Math.floor(time/1000)%60, 2, '0')+
+						':'+rpad(time%1000, 3, '0')
+				};
+			}), [
+				'rank',
+				'username',
+				'score',
+				'length',
+				'speed',
+				'time'
+			]);
+		}
+	} else {
+		popup.addStrong("Error loading leaderboards");
+		popup.addEm(err);
+	}
+
+	Popup.dismiss();
+	const verb=await popup.display();
+	if(verb=='next') return show(mode, page+1);
+	else if(verb=='prev') return show(mode, page-1);
+	else if(verb=='modeP') return show(prevMode());
+	else if(verb=='modeN') return show(nextMode());
+	location.hash='';
+};
+
+return module.exports={
+	upload, show
+};

src/js/levels.js

@@ -7,12 +7,37 @@ const get=async filename => {
 	return cache[filename]=json;
 };
 
+const getInfo=(category, id) => {
+	const cat=levelList[category];
+	id=''+id;
+
+	const displayName=cat.levelDisplay
+		.replace(/<n>/g, id)
+		.replace(/<l>/g, id.toLowerCase());
+	const fileName=cat.levelFilename
+		.replace(/<n>/g, id)
+		.replace(/<l>/g, id.toLowerCase());
+	const levelString=category+'/'+id+'/'+fileName;
+
+	return {
+		displayName,
+		fileName,
+		levelString
+	};
+};
+
+const getRules=async (category, id) => {
+	const {fileName}=getInfo(category, id);
+	const json=await get(fileName);
+	return Object.assign({}, window.levelList[category].rules, json.rules);
+};
+
 const clearCache=() =>
 	Object
 		.keys(cache)
 		.forEach(key => delete cache[key]);
 
 return module.exports={
-	get,
+	get, getRules, getInfo,
 	clearCache
 };

src/js/main.js

@@ -8,6 +8,7 @@
 	const input=require('input');
 	const levels=require('levels');
 	const config=require('config');
+	const leaderboards=require('leaderboards');
 
 	// get a known state
 	await new Promise(ok => assets.onReady(ok));
@@ -20,13 +21,29 @@
 	const hud=main.querySelector('#hud');
 
 	// load data from server
-	const levelList=assets.get('levelList');
+	const levelList=window.levelList=assets.get('levelList');
+
+	// detect if we're running with a server
+	const serverless=window.serverless=await (async() => {
+		const res=await fetch('api/has-nodejs');
+		if(!res.ok) return true;
+		const msg=await res.json();
+		return msg!='yes';
+	})();
+	if(serverless) {
+		document.body.classList.add('serverless');
+	} else {
+		document.body.classList.add('server');
+	}
+
+	// flag the body as loaded
+	document.body.classList.remove('loading');
 
 	// get our global variables
 	let currentGame=null;
 
 	// forward-declare functions
-	let resizeCanvas, getLevel, startGame, stopGame, handleWin, handleDeath, menu, help, settings, restart, updateHud;
+	let resizeCanvas, startGame, stopGame, handleWin, handleDeath, menu, help, settings, showLeaderboards, restart, updateHud;
 
 	// handle window resize and fullscreen
 	resizeCanvas=() => {
@@ -48,26 +65,6 @@
 		}
 	});
 
-	// get a level for a category and an id
-	getLevel=(category, id) => {
-		const cat=levelList[category];
-		id=''+id;
-
-		const displayName=cat.levelDisplay
-			.replace(/<n>/g, id)
-			.replace(/<l>/g, id.toLowerCase());
-		const fileName=cat.levelFilename
-			.replace(/<n>/g, id)
-			.replace(/<l>/g, id.toLowerCase());
-		const levelString=category+'/'+id+'/'+fileName;
-
-		return {
-			displayName,
-			fileName,
-			levelString
-		};
-	};
-
 	// buid menu from level list
 	Object.keys(levelList).forEach(category => {
 		const cat=levelList[category];
@@ -81,7 +78,7 @@
 
 		const ul=section.appendChild(document.createElement('ul'));
 		cat.levels.forEach((level, i) => {
-			const {displayName, fileName, levelString}=getLevel(category, level);
+			const {displayName, fileName, levelString}=levels.getInfo(category, level);
 			const li=ul.appendChild(document.createElement('li'));
 			const a=li.appendChild(document.createElement('a'));
 			a.href='#'+levelString;
@@ -106,6 +103,12 @@
 		}
 	};
 
+	// display the leaderboards
+	showLeaderboards=() => {
+		stopGame();
+		leaderboards.show();
+	};
+
 	// start a new game
 	startGame=async (category, levelId, filename) => {
 		// stop any running games and clear popups
@@ -192,6 +195,9 @@
 		// fetch userdata from the game
 		const {category, levelId, filename}=snek.userdata;
 
+		// upload scores
+		if(config.getB('player.leaderboards')) leaderboards.upload(category+'/'+levelId, true, snek);
+
 		// create and configure popup
 		let popup=new Popup("Finished!");
 		popup.addStrong("You won!");
@@ -221,7 +227,7 @@
 		} else if(result=='next') {
 			const {category, levelId}=snek.userdata;
 			let nextId=(+levelId)+1;
-			let {levelString}=getLevel(category, nextId)
+			let {levelString}=levels.getInfo(category, nextId)
 			location.hash=levelString;
 		}
 	};
@@ -231,6 +237,12 @@
 		// hide the HUD
 		hud.classList.add('hidden');
 
+		// fetch userdata from the game
+		const {category, levelId, filename}=snek.userdata;
+
+		// upload scores
+		if(config.getB('player.leaderboards')) leaderboards.upload(category+'/'+levelId, false, snek);
+
 		// create and configure popup
 		let popup=new Popup("Finished!");
 		popup.addStrong(config.getS('player.name')+' '+snek.death.message);
@@ -251,7 +263,6 @@
 
 		// act on it
 		if(result=='retry') {
-			const {category, levelId, filename}=snek.userdata;
 			startGame(category, levelId, filename);
 		} else if(result=='menu') {
 			location.hash='menu';
@@ -304,6 +315,7 @@
 		if(hash=='' || hash=='menu') return menu();
 		else if(hash=='help') return help();
 		else if(hash=='settings') return settings();
+		else if(hash=='leaderboards') return showLeaderboards();
 
 		const [_, category, levelId, filename]=location.hash.match(/([a-zA-Z0-9_-]+?)\/([a-zA-Z0-9_-]+?)\/(.+)/);
 		startGame(category, levelId, filename);

src/js/popup.js

@@ -17,6 +17,7 @@ const objToDom=obj => {
 		return ul;
 	} else {
 		let table=document.createElement('table');
+		table.classList.add('dual');
 		Object
 			.keys(obj)
 			.forEach(key => {
@@ -34,6 +35,7 @@ class Popup {
 		this.content=content.map(objToDom);
 		this.buttons={...buttons};
 		this.large=large;
+		this.animation=true;
 	}
 
 	addContent(cnt) {
@@ -53,6 +55,25 @@ class Popup {
 		hn.innerText=cnt;
 		this.content.push(hn);
 	}
+	addTable(data, heading=Object.keys(data)) {
+		let table=document.createElement('table');
+		table.classList.add('table');
+		let thead=table.appendChild(document.createElement('thead'));
+		let headingRow=thead.appendChild(document.createElement('tr'));
+		heading.forEach(key => {
+			let th=headingRow.appendChild(document.createElement('th'));
+			th.innerText=key;
+		});
+		let tbody=table.appendChild(document.createElement('tbody'));
+		data.forEach(row => {
+			let tr=tbody.appendChild(document.createElement('tr'));
+			heading.forEach(key => {
+				let td=tr.appendChild(document.createElement('td'));
+				td.innerText=row[key];
+			});
+		});
+		this.content.push(table);
+	}
 
 	async display(parent=document.body) {
 		let outer=document.createElement('div');
@@ -60,6 +81,7 @@ class Popup {
 		let popup=outer.appendChild(document.createElement('div'));
 		popup.classList.add('content');
 		if(this.large) popup.classList.add('large');
+		if(this.animation) outer.classList.add('animation');
 
 		let title=popup.appendChild(document.createElement('h1'));
 		title.innerText=this.title;

src/less/popup.less

@@ -8,7 +8,10 @@
 }
 
 .popup {
+	&.animation {
 		animation: popupAppear 1s linear;
+	}
+
 	background: rgba(0, 0, 0, 90%);
 
 	position: absolute;
@@ -64,7 +67,7 @@
 			}
 		}
 
-		table {
+		.dual {
 			display: flex;
 			flex-direction: column;
 			width: 100%;
@@ -86,6 +89,15 @@
 				flex: 1;
 			}
 		}
+
+		.table {
+			width: 100%;
+
+			td, th {
+				padding: .5rem;
+			}
+		}
+
 		label {
 			margin-right: 1ex;
 		}

src/less/snek.less

@@ -129,6 +129,16 @@ p {
 	display: none !important;
 }
 
+body.serverless .server {
+	display: none !important;
+}
+body.server .serverless {
+	display: none !important;
+}
+body.loading .loaded {
+	display: none !important;
+}
+
 // setup the progress bar
 @import 'progressBar';