Add latest version of build

build/classes/interface.js

@@ -0,0 +1,152 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+
+var _ansi = require('ansi');
+
+var _ansi2 = _interopRequireDefault(_ansi);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var _process = process,
+    stdout = _process.stdout,
+    stdin = _process.stdin;
+
+
+var listeners = [];
+
+var prefix = '\x1B';
+var keys = {
+  right: prefix + '[C',
+  up: prefix + '[A',
+  left: prefix + '[D',
+  down: prefix + '[B',
+  exit: '\x03',
+  space: ' '
+};
+
+var Interface = function () {
+  function Interface() {
+    var _this = this;
+
+    var output = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : stdout;
+    var input = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : stdin;
+
+    _classCallCheck(this, Interface);
+
+    this.output = output;
+    this.input = input;
+
+    this.input.setRawMode(true);
+    this.input.setEncoding('utf8');
+
+    this.cursor = (0, _ansi2.default)(this.output).hide();
+
+    this.input.addListener('data', function (data) {
+      var always = listeners.filter(function (listener) {
+        return listener.key === '';
+      });
+
+      always.forEach(function (listener) {
+        return listener.fn();
+      });
+
+      var key = Object.keys(keys).find(function (value, i) {
+        return keys[value] === data;
+      });
+
+      if (key === 'exit') {
+        _this.output.write('\x1B[2J\x1B[0;0H');
+        process.exit();
+      }
+
+      var match = listeners.filter(function (listener) {
+        return listener.key === key || listener.key === data;
+      });
+
+      match.forEach(function (listener) {
+        return listener.fn();
+      });
+    });
+  }
+
+  _createClass(Interface, [{
+    key: 'clear',
+    value: function clear() {
+      this.output.write('\x1B[2J\x1B[0;0H');
+    }
+  }, {
+    key: 'write',
+    value: function write() {
+      var _cursor;
+
+      (_cursor = this.cursor).write.apply(_cursor, arguments);
+    }
+  }, {
+    key: 'onKey',
+    value: function onKey(key, fn) {
+      if (typeof key === 'function') {
+        fn = key;
+        key = '';
+      }
+      listeners.push({ key: key, fn: fn });
+    }
+  }, {
+    key: 'line',
+    value: function line(from, to) {
+      var delta = {
+        x: to.x - from.x,
+        y: to.y - from.y
+      };
+
+      var error = 0;
+
+      var deltaerr = Math.abs(delta.y / delta.x);
+
+      var y = from.y;
+
+
+      for (var x = from.x; x < to.x; x++) {
+        this.cursor.goto(x, y);
+        this.write('.');
+        error += deltaerr;
+
+        while (error >= 0.5) {
+          this.cursor.goto(x, y);
+          this.write('.');
+          y += Math.sign(delta.y);
+
+          error -= 1;
+        }
+      }
+    }
+  }, {
+    key: 'columns',
+    get: function get() {
+      return this.output.columns;
+    }
+  }, {
+    key: 'rows',
+    get: function get() {
+      return this.output.rows;
+    }
+  }, {
+    key: 'center',
+    get: function get() {
+      return {
+        x: this.output.columns / 2,
+        y: this.output.rows / 2
+      };
+    }
+  }]);
+
+  return Interface;
+}();
+
+exports.default = Interface;

build/classes/tank.js

@@ -0,0 +1,162 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Bullet = undefined;
+
+var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+
+var _unit = require('./unit');
+
+var _unit2 = _interopRequireDefault(_unit);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
+
+var BULLET_SPEED = 10;
+
+var Tank = function (_Unit) {
+  _inherits(Tank, _Unit);
+
+  function Tank(ui) {
+    _classCallCheck(this, Tank);
+
+    var _this = _possibleConstructorReturn(this, (Tank.__proto__ || Object.getPrototypeOf(Tank)).call(this, ui));
+
+    _this._angle = 0;
+    _this.bullets = [];
+    _this.health = 100;
+
+    _this.size = { x: 5, y: 3 };
+    return _this;
+  }
+
+  _createClass(Tank, [{
+    key: 'shoot',
+    value: function shoot() {
+      var bullet = new Bullet(this.output);
+      bullet.go(this.x + 2, this.y - 2);
+      bullet.velocity = this.normalize();
+
+      this.bullets.push(bullet);
+    }
+  }, {
+    key: 'draw',
+    value: function draw() {
+      if (this.dead) return;
+
+      var x = this.x,
+          y = this.y;
+
+      if (this.color && this.color[0] === '#') {
+        this.output.cursor.hex(this.color);
+      } else if (this.color) {
+        this.output.cursor[this.color]();
+      }
+      if (this.bold) this.output.cursor.bold();
+
+      x = Math.round(x) + 2;
+      y = Math.round(y) - 2;
+
+      var cannon = void 0;
+      if (this.angle < 35) cannon = '_';else if (this.angle < 70) cannon = '/';else if (this.angle < 115) cannon = '|';else if (this.angle < 160) cannon = '\\';else cannon = '_';
+
+      this.output.cursor.goto(x + 2, y - 2);
+      this.output.write(cannon);
+      this.output.cursor.goto(x, y - 1);
+      this.output.write('.===.');
+      this.output.cursor.goto(x, y);
+      this.output.write('o===o');
+      this.output.cursor.reset();
+    }
+  }, {
+    key: 'normalize',
+    value: function normalize() {
+      return [Math.cos(this._angle), Math.sin(this._angle) * -1];
+    }
+  }, {
+    key: 'angle',
+    set: function set(deg) {
+      if (deg < 0) deg = 0;
+      if (deg > 180) deg = 180;
+
+      this._angle = _radian(deg);
+    },
+    get: function get() {
+      return _degree(this._angle);
+    }
+  }], [{
+    key: 'radian',
+    value: function radian(deg) {
+      return _radian(deg);
+    }
+  }, {
+    key: 'degree',
+    value: function degree(rad) {
+      return _degree(rad);
+    }
+  }]);
+
+  return Tank;
+}(_unit2.default);
+
+exports.default = Tank;
+
+var Bullet = exports.Bullet = function (_Unit2) {
+  _inherits(Bullet, _Unit2);
+
+  function Bullet(ui) {
+    _classCallCheck(this, Bullet);
+
+    var _this2 = _possibleConstructorReturn(this, (Bullet.__proto__ || Object.getPrototypeOf(Bullet)).call(this, ui));
+
+    _this2.velocity = [0, 0];
+
+    _this2.shape = '•';
+    _this2.color = 'red';
+
+    _this2.dieOnExit = true;
+
+    _this2.gravity = [0.8, 0.8];
+    _this2.acceleration = [0, 0.015];
+    return _this2;
+  }
+
+  _createClass(Bullet, [{
+    key: 'speed',
+    value: function speed() {
+      this.velocity[0] += this.acceleration[0];
+      this.velocity[1] += this.acceleration[1];
+
+      var x = this.velocity[0] * this.gravity[0];
+      var y = this.velocity[1] * this.gravity[1];
+      return [x, y];
+    }
+  }, {
+    key: 'collides',
+    value: function collides(target) {
+      var targetX = Math.round(target.x);
+      var targetY = Math.round(target.y);
+      var x = Math.round(this.x);
+      var y = Math.round(this.y);
+
+      return x > targetX - target.size.x && x < targetX + target.size.x && y > targetY - target.size.y && y < targetY + target.size.y;
+    }
+  }]);
+
+  return Bullet;
+}(_unit2.default);
+
+function _radian(deg) {
+  return deg * Math.PI / 180;
+}
+
+function _degree(rad) {
+  return rad * 180 / Math.PI;
+}

build/classes/unit.js

@@ -0,0 +1,128 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+
+function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var Unit = function () {
+  function Unit(output) {
+    _classCallCheck(this, Unit);
+
+    this._health = 0;
+    this.dead = false;
+    this.output = output;
+
+    this.dieOnExit = false;
+  }
+
+  _createClass(Unit, [{
+    key: 'move',
+    value: function move(x, y) {
+      if (!x && !y) return this.move.apply(this, _toConsumableArray(this.speed()));
+      this.x += x;
+      this.y += y;
+    }
+  }, {
+    key: 'draw',
+    value: function draw() {
+      if (this.dead) return;
+
+      var x = this.x,
+          y = this.y,
+          shape = this.shape;
+
+      if (this.color && this.color[0] === '#') {
+        this.output.cursor.hex(this.color);
+      } else if (this.color) {
+        this.output.cursor[this.color]();
+      }
+      if (this.bold) this.output.cursor.bold();
+
+      this.output.cursor.goto(Math.round(x), Math.round(y));
+      this.output.write(shape);
+      this.output.cursor.reset();
+    }
+  }, {
+    key: 'go',
+    value: function go(x, y) {
+      this.x = x;
+      this.y = y;
+    }
+  }, {
+    key: 'random',
+    value: function random() {
+      this.x = Math.max(1, Math.floor(Math.random() * this.output.columns));
+      this.y = Math.max(1, Math.floor(Math.random() * this.output.rows));
+    }
+  }, {
+    key: 'speed',
+    value: function speed() {
+      var signs = [Math.random() > 0.5 ? -1 : 1, Math.random() > 0.5 ? -1 : 1];
+      return [Math.random() * signs[0], Math.random() * signs[1]];
+    }
+  }, {
+    key: 'collides',
+    value: function collides(target) {
+      var _this = this;
+
+      if (Array.isArray(target)) {
+        return target.find(function (t) {
+          return _this.collides(t);
+        });
+      }
+
+      var targetX = Math.round(target.x);
+      var targetY = Math.round(target.y);
+      var x = Math.round(this.x);
+      var y = Math.round(this.y);
+
+      return x === targetX && y == targetY;
+    }
+  }, {
+    key: 'health',
+    set: function set(value) {
+      this._health = Math.max(0, value);
+
+      if (this.health === 0) {
+        this.dead = true;
+      }
+    },
+    get: function get() {
+      return this._health;
+    }
+  }, {
+    key: 'x',
+    set: function set(value) {
+      this._x = value;
+
+      if (this.dieOnExit && this._x > this.output.columns) {
+        this.dead = true;
+      }
+    },
+    get: function get() {
+      return this._x;
+    }
+  }, {
+    key: 'y',
+    set: function set(value) {
+      this._y = value;
+
+      if (this.dieOnExit && this._y > this.output.rows) {
+        this.dead = true;
+      }
+    },
+    get: function get() {
+      return this._y;
+    }
+  }]);
+
+  return Unit;
+}();
+
+exports.default = Unit;

build/locales/en.json

@@ -0,0 +1,17 @@
+{
+  "snake": {
+    "score": "Score",
+    "gameOver": "Game Over!",
+    "anyKey": "Press any key to play again"
+  },
+  "tanks": {
+    "playerWon": "Player %{num} won!",
+    "player": "Player %{number}",
+    "health": "Health %{value}",
+    "angle": "Angle %{value}"
+  },
+  "spacecraft": {
+    "score": "Score"
+  }
+}
+

build/locales/es.json

@@ -0,0 +1,16 @@
+{
+  "snake": {
+    "score": "Puntaje",
+    "gameOver": "¡Se acabó el juego!",
+    "anyKey": "Presioná cualquier tecla para jugar nuevamente"
+  },
+  "tanks": {
+    "playerWon": "¡Ha ganado el jugador %{name}!",
+    "player": "Jugador %{number}",
+    "health": "Salud %{value}",
+    "angle": "Ángulo %{value}"
+  },
+  "spacecraft": {
+    "score": "Puntaje"
+  }
+}

build/snake.js

@@ -0,0 +1,188 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();
+
+exports.default = function (i18n) {
+  loop(i18n);
+
+  ui.onKey(function () {
+    if (!stop) return;
+
+    stop = false;
+    snake = [];
+    head = createPart();
+    head.color = '#71da29';
+    createPart();
+    createPart();
+
+    score = 0;
+
+    point.random();
+
+    loop(i18n);
+  });
+};
+
+var _unit = require('./classes/unit');
+
+var _unit2 = _interopRequireDefault(_unit);
+
+var _interface = require('./classes/interface');
+
+var _interface2 = _interopRequireDefault(_interface);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var FRAME = 100;
+var ui = new _interface2.default();
+
+var snake = [];
+var UP = 0;
+var DOWN = 1;
+var LEFT = 2;
+var RIGHT = 3;
+var head = createPart();
+head.color = '#71da29';
+head.dieOnExit = true;
+createPart();
+createPart();
+
+var point = new _unit2.default(ui);
+point.shape = '+';
+point.color = '#f3ff6a';
+point.random();
+
+var score = 0;
+
+var stop = false;
+function loop(i18n) {
+  if (stop) return;
+  ui.clear();
+
+  point.draw();
+
+  snake.forEach(function (part, i) {
+    part.draw();
+
+    if (i > 0) part.findWay(i);
+
+    part.move();
+  });
+
+  if (head.collides(point)) {
+    point.random();
+    createPart();
+    score++;
+
+    FRAME -= 5;
+  }
+
+  if (head.collides(snake.slice(2))) {
+    gameover(i18n);
+  }
+
+  ui.cursor.goto(0, 0).yellow().write(i18n.t('snake.score') + ': ' + score);
+  ui.cursor.reset();
+
+  setTimeout(loop, FRAME, i18n);
+}
+
+ui.onKey('right', function () {
+  changeDirection(RIGHT);
+});
+ui.onKey('down', function () {
+  changeDirection(DOWN);
+});
+ui.onKey('up', function () {
+  changeDirection(UP);
+});
+ui.onKey('left', function () {
+  changeDirection(LEFT);
+});
+
+function changeDirection(dir) {
+  if (head.direction === UP && dir === DOWN || head.direction === DOWN && dir === UP || head.direction === LEFT && dir === RIGHT || head.direction === RIGHT && dir === LEFT) return;
+  head.direction = dir;
+}
+
+function createPart() {
+  var part = new _unit2.default(ui);
+  var last = snake[snake.length - 1];
+
+  var direction = void 0;
+  if (!last) {
+    direction = UP;
+  } else {
+    direction = last.direction;
+  }
+
+  part.shape = '•';
+  part.color = '#bdfe91';
+  part.direction = direction;
+  part.changeTo = null;
+
+  part.findWay = function (i) {
+    var ahead = snake[i - 1];
+
+    if (this.changeTo !== null) {
+      this.direction = this.changeTo;
+      this.changeTo = null;
+    }
+    if (this.direction !== ahead.direction) {
+      this.changeTo = ahead.direction;
+    }
+  };
+
+  part.speed = function () {
+    var multiplier = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 1;
+    var direction = part.direction;
+
+    var x = direction === LEFT ? -1 : direction === RIGHT ? 1 : 0;
+    var y = direction === UP ? -1 : direction === DOWN ? 1 : 0;
+
+    return [x * multiplier, y * multiplier];
+  };
+
+  var _part$speed = part.speed(),
+      _part$speed2 = _slicedToArray(_part$speed, 2),
+      dX = _part$speed2[0],
+      dY = _part$speed2[1];
+
+  dX *= -1;
+  dY *= -1;
+
+  var x = last ? last.x + dX : ui.center.x;
+  var y = last ? last.y + dY : ui.center.y;
+
+  part.go(x, y);
+
+  snake.push(part);
+  return part;
+}
+
+function gameover(i18n) {
+  var MSG = i18n.t('snake.gameOver');
+  ui.cursor.goto(ui.center.x - MSG.length / 2, ui.center.y);
+  ui.cursor.red();
+  ui.cursor.bold();
+  ui.write(MSG);
+
+  ui.cursor.reset();
+  ui.cursor.hex('#f65590');
+  var RETRY = i18n.t('snake.anyKey');
+  ui.cursor.goto(ui.center.x - RETRY.length / 2, ui.center.y + 2);
+  ui.write(RETRY);
+
+  FRAME = 100;
+
+  stop = true;
+}
+
+process.on('exit', function () {
+  ui.cursor.horizontalAbsolute(0).eraseLine();
+  ui.cursor.show();
+});

build/spacecraft.js

@@ -0,0 +1,131 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+exports.default = function (i18n) {
+  setInterval(function (i18n) {
+    ui.clear();
+
+    player.draw();
+
+    missles.forEach(function (missle, i) {
+      missle.move(1, 0);
+      missle.draw();
+
+      var enemy = missle.collides(enemies);
+      if (enemy) {
+        enemy.killed = 1;
+        enemy.color = 'red';
+        enemy.shape = '*';
+        missle.dead = true;
+
+        ENEMY_SPAWN_RATE -= 5;
+
+        score++;
+      }
+
+      if (missle.dead) {
+        missles.splice(i, 1);
+      }
+    });
+
+    enemies.forEach(function (enemy, i) {
+      // move with speed
+      enemy.move();
+      enemy.draw();
+
+      if (enemy.dead) {
+        enemies.splice(i, 1);
+      }
+
+      if (enemy.killed === 3) enemy.dead = true;
+      if (enemy.killed < 3) enemy.killed++;
+    });
+
+    ui.cursor.goto(0, 0).yellow().write(i18n.t('spacecraft.score') + ': ' + score);
+    ui.cursor.reset();
+  }, FRAME, i18n);
+};
+
+var _unit = require('./classes/unit');
+
+var _unit2 = _interopRequireDefault(_unit);
+
+var _interface = require('./classes/interface');
+
+var _interface2 = _interopRequireDefault(_interface);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var FRAME = 20;
+var ENEMY_SPAWN_RATE = 1000;
+var RELOAD_TIME = 200;
+
+var ui = new _interface2.default();
+
+var player = new _unit2.default(ui);
+player.go(1, ui.center.y);
+player.shape = '=>';
+player.color = '#77d6ff';
+player.bold = true;
+player.canShoot = true;
+
+var explosion = new _unit2.default(ui);
+explosion.dead = true;
+
+var missles = [];
+var enemies = [];
+var score = 0;
+
+ui.onKey('right', function () {
+  player.move(1, 0);
+});
+ui.onKey('down', function () {
+  player.move(0, 1);
+});
+ui.onKey('up', function () {
+  player.move(0, -1);
+});
+ui.onKey('left', function () {
+  player.move(-1, 0);
+});
+
+ui.onKey('space', function () {
+  if (!player.canShoot) return;
+
+  player.canShoot = false;
+
+  var missle = new _unit2.default(ui);
+  missle.go(player.x, player.y);
+  missle.shape = '+';
+  missle.dieOnExit = true;
+
+  missles.push(missle);
+
+  setTimeout(function () {
+    player.canShoot = true;
+  }, RELOAD_TIME);
+});
+
+(function loop() {
+  var enemy = new _unit2.default(ui);
+  enemy.go(Math.random() * ui.output.columns, 0);
+  enemy.shape = 'o';
+  enemy.color = '#f7c71e';
+  enemy.dieOnExit = true;
+
+  enemy.speed = function () {
+    return [Math.random() > 0.9 ? 0.4 : 0, 0.06];
+  };
+
+  enemies.push(enemy);
+
+  setTimeout(loop, ENEMY_SPAWN_RATE);
+})();
+
+process.on('exit', function () {
+  ui.cursor.horizontalAbsolute(0).eraseLine();
+  ui.cursor.show();
+});

build/tanks.js

@@ -0,0 +1,158 @@
+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+exports.default = function (i18n) {
+  loop(i18n);
+};
+
+var _tank = require('./classes/tank');
+
+var _tank2 = _interopRequireDefault(_tank);
+
+var _interface = require('./classes/interface');
+
+var _interface2 = _interopRequireDefault(_interface);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+var FRAME = 50;
+var ui = new _interface2.default();
+var immoblize = false;
+
+var one = new _tank2.default(ui);
+one.go(10, ui.rows);
+
+var two = new _tank2.default(ui);
+two.go(ui.columns - 10, ui.rows);
+
+var stop = false;
+
+function loop(i18n) {
+  if (stop) return;
+
+  ui.clear();
+
+  if (one.dead || two.dead) {
+    var num = one.dead ? '2' : '1';
+    var msg = i18n.t('tanks.playerWon', { num: num });
+    ui.cursor.red();
+    ui.cursor.bold();
+
+    ui.cursor.goto(ui.center.x - msg.length / 2, ui.center.y);
+    ui.write(msg);
+
+    stop = true;
+    return;
+  }
+
+  one.draw();
+  one.bullets.forEach(function (bullet, i) {
+    if (bullet.dead) {
+      immoblize = false;
+      one.bullets.splice(i, 1);
+      return;
+    }
+    bullet.move();
+    bullet.draw();
+
+    if (bullet.collides(two)) {
+      two.health -= 10;
+      bullet.dead = true;
+    }
+  });
+
+  ui.cursor.goto(0, 1);
+  if (turn() === one) ui.cursor.hex('#54ffff');
+  ui.write(i18n.t('tanks.player', { number: "1" }));
+  ui.cursor.reset();
+  ui.cursor.goto(0, 2);
+  ui.write(i18n.t('tanks.health', { value: one.health }));
+  ui.cursor.goto(0, 3);
+  ui.write(i18n.t('tanks.angle', { value: parseInt(one.angle) }));
+
+  two.draw();
+  two.bullets.forEach(function (bullet, i) {
+    if (bullet.dead) {
+      immoblize = false;
+      two.bullets.splice(i, 1);
+      return;
+    }
+    bullet.move();
+    bullet.draw();
+
+    if (bullet.collides(one)) {
+      one.health -= 10;
+      bullet.dead = true;
+    }
+  });
+
+  ui.cursor.goto(ui.output.columns - 10, 1);
+  if (turn() === two) ui.cursor.hex('#54ffff');
+  ui.write(i18n.t('tanks.player', { number: "2" }));
+  ui.cursor.reset();
+  ui.cursor.goto(ui.output.columns - 10, 2);
+  ui.write(i18n.t('tanks.health', { value: two.health }));
+  ui.cursor.goto(ui.output.columns - 10, 3);
+  ui.write(i18n.t('tanks.angle', { value: parseInt(two.angle) }));
+
+  setTimeout(loop, FRAME, i18n);
+}
+
+ui.onKey('down', function () {
+  if (immoblize) return;
+
+  turn().angle -= 1;
+});
+
+ui.onKey('up', function () {
+  if (immoblize) return;
+
+  turn().angle += 1;
+});
+
+ui.onKey('left', function () {
+  if (immoblize) return;
+
+  turn().x -= 1;
+});
+
+ui.onKey('right', function () {
+  if (immoblize) return;
+
+  turn().x += 1;
+});
+
+ui.onKey('space', function () {
+  if (immoblize) return;
+
+  turn().shoot();
+
+  immoblize = true;
+  TURN = !TURN;
+});
+
+ui.onKey(function () {
+  if (one.dead || two.dead) {
+    one.go(10, ui.rows);
+    two.go(ui.columns - 10, ui.rows);
+
+    one.health = 100;
+    two.health = 100;
+
+    one.dead = false;
+    two.dead = false;
+
+    stop = false;
+
+    loop();
+  }
+});
+
+var TURN = true;
+function turn() {
+  if (TURN) return one;
+  return two;
+}