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index.js
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index.js
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'use strict'
const createBoard = require('@derhuerst/2048/src/Board')
const esc = require('ansi-escapes')
const ui = require('cli-styles')
const wrap = require('prompt-skeleton')
const bg = []
bg[0] = `\x1b[48;5;231m`
bg[2] = `\x1b[48;5;229m`
bg[4] = `\x1b[48;5;226m`
bg[8] = `\x1b[48;5;220m`
bg[16] = `\x1b[48;5;223m`
bg[32] = `\x1b[48;5;214m`
bg[64] = `\x1b[48;5;217m`
bg[128] = `\x1b[48;5;208m`
bg[256] = `\x1b[48;5;211m`
bg[512] = `\x1b[48;5;205m`
bg[1024] = `\x1b[48;5;202m`
bg[2048] = `\x1b[48;5;196m`
const _2048 = {
, hasWon: function () {
const c = this.board.getCells()
for (let x = 0; x < c.length; x++) {
for (let y = 0; y < c[0].length; y++) {
if (c[x][y] === 2048) return true
}
}
return false
}
, submit: function () {
if (!this.hasWon()) return this.bell()
this.done = true
this.aborted = false
this.emit()
this.render()
this.out.write('\n')
this.close()
}
, up: function () {
this.board.up()
this.render()
}
, down: function () {
this.board.down()
this.render()
}
, left: function () {
this.board.left()
this.render()
}
, right: function () {
this.board.right()
this.render()
}
, clear: ui.clear('')
, render: function (first) {
const raw = this.board.getCells()
const board = []
const black = `\x1b[38;5;16m`
const reset = '\x1b[0m'
for (let y = 0; y < raw.length; y++) {
for (let x = 0; x < raw[y].length; x++) {
const val = raw[y][x]
const text = val + ''
if (!board[x * 2]) board[x * 2] = []
if (!board[x * 2 + 1]) board[x * 2 + 1] = []
if (val === 0) {
board[x * 2][y] = ' '
board[x * 2 + 1][y] = ' '
} else {
const bgc = bg[val]
board[x * 2][y] = [
black, bgc, ' ',
text[0] || ' ',
text[1] || ' ',
' ', reset
].join('')
board[x * 2 + 1][y] = [
black, bgc, ' ',
text[2] || ' ',
text[3] || ' ',
' ', reset
].join('')
}
}
}
const out = board.map((row, i) => {
return row.join(' ') + (i % 2 ? '\n' : '')
}).join('\n')
this.out.write(this.clear + out)
this.clear = ui.clear(out)
}
}
const create2048 = () => {
const board = createBoard()
const game = Object.assign(Object.create(_2048), {
value: null, done: false, aborted: false,
board
})
return wrap(game)
}
module.exports = Object.assign(create2048, {_2048})