Initial commit

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.js]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+indent_size = 4

.gitignore

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+lib
+node_modules

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2014 Florent Cailhol
+
+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, and/or 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.

README.md

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+# speedr-array2
+
+> Two-dimensional array
+
+## Install
+
+```sh
+$ npm install --save speedr-array2
+```
+
+## Usage
+
+```js
+import {Array2} from 'speedr-array2'
+
+const Tiles = {
+  SAND: 0,
+  TREE: 1,
+  WALL: 2
+}
+
+// Constructors
+let map1 = new Array2(10, 10)
+let map2 = new Array2(80, 50, Tiles.SAND)
+let map3 = new Array2(40, 40, (x, y) => x * y)
+
+// Access
+map3.get(4, 9) // 36
+map3.set(4, 9, 12)
+```
+
+## License
+
+MIT © Florent Cailhol

package.json

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+{
+  "name": "speedr-array2",
+  "version": "1.0.0",
+  "description": "Two-dimensional array",
+  "author": "Florent Cailhol <[email protected]>",
+  "repository": "speedr/array2",
+  "keywords": [
+    "speedr",
+    "array",
+    "array2"
+  ],
+  "main": "lib/index.js",
+  "files": [
+    "lib"
+  ],
+  "scripts": {
+    "build": "6to5 --source-maps-inline --out-dir lib src"
+  },
+  "devDependencies": {
+    "6to5": "^2.2.0"
+  },
+  "license": "MIT"
+}

src/index.js

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+export class Array2 {
+  constructor(w, h, initValue) {
+    this.w = w
+    this.h = h
+    this.e = new Array(w * h)
+
+    let fn = typeof initValue == 'function' ? initValue : () => initValue
+
+    for (let y = 0; y < h; y++) {
+      for (let x = 0; x < w; x++) {
+        this.set(x, y, fn(x, y))
+      }
+    }
+  }
+
+  get(x, y) {
+    if (x < 0 || y < 0 || x >= this.w || y >= this.h) return null
+    return this.e[y * this.w + x]
+  }
+
+  set(x, y, val) {
+    if (x < 0 || y < 0 || x >= this.w || y >= this.h) return
+    this.e[y * this.w + x] = val
+  }
+}