Ein Projekt das es ermöglicht Beerpong über das Internet von zwei unabhängigen positionen aus zu spielen. Entstehung im Rahmen einer Praktikumsaufgabe im Fach Interaktion.
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BoardServer.js 3.4KB

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  1. var EventEmitter = require('events').EventEmitter;
  2. var util = require('util');
  3. /**
  4. *
  5. * @constructor
  6. */
  7. var Board = function() {
  8. this.cells = [];
  9. this.players = [];
  10. this.currentTurn = 0;
  11. this.ready = false;
  12. this.init();
  13. };
  14. Board.events = {
  15. PLAYER_CONNECTED: 'playerConnected',
  16. GAME_READY: 'gameReady',
  17. CELL_MARKED: 'cellMarked',
  18. CHANGE_TURN: 'changeTurn',
  19. WINNER: 'winner',
  20. DRAW: 'draw'
  21. };
  22. util.inherits(Board, EventEmitter);
  23. /**
  24. *
  25. */
  26. Board.prototype.init = function() {
  27. for (var i = 0; i < 9; i++) {
  28. this.cells.push({});
  29. }
  30. };
  31. Board.prototype.disableAll = function() {
  32. this.cells.forEach(function(cell) {
  33. cell.active = false;
  34. });
  35. };
  36. Board.prototype.enableAll = function() {
  37. this.cells.forEach(function(cell) {
  38. cell.active = true;
  39. });
  40. };
  41. /**
  42. *
  43. * @param cellId
  44. */
  45. Board.prototype.mark = function(cellId) {
  46. var cell = this.cells[cellId];
  47. if (!cell) {
  48. return false;
  49. }
  50. if (this.ready && cell.active) {
  51. var player = this.players[this.currentTurn];
  52. cell.value = player.label;
  53. cell.active = false;
  54. this.emit(Board.events.CELL_MARKED, {cellId: cellId, player: player});
  55. var res = this.checkWinner();
  56. if (res.win) {
  57. this.disableAll();
  58. this.emit(Board.events.WINNER, {player: this.players[this.currentTurn], pos: res.pos});
  59. } else if (this.checkDraw()) {
  60. this.emit(Board.events.DRAW, {});
  61. } else {
  62. this.currentTurn = (this.currentTurn + 1) % 2;
  63. this.emit(Board.events.CHANGE_TURN, this.players[this.currentTurn]);
  64. }
  65. }
  66. };
  67. /**
  68. *
  69. * @param playerId
  70. * @returns {boolean}
  71. */
  72. Board.prototype.checkTurn = function(playerId) {
  73. return this.players[this.currentTurn].id == playerId;
  74. };
  75. /**
  76. *
  77. * @returns {{win: boolean, pos: Array}}
  78. */
  79. Board.prototype.checkWinner = function() {
  80. var winPosition = [
  81. [0, 1, 2],
  82. [3, 4, 5],
  83. [6, 7, 8],
  84. [0, 3, 6],
  85. [1, 4, 7],
  86. [2, 5, 8],
  87. [0, 4, 8],
  88. [6, 4, 2]
  89. ];
  90. var player = this.players[this.currentTurn];
  91. var pos = [];
  92. var win = winPosition.some(function(win) {
  93. if (this.cells[win[0]].value === player.label) {
  94. var res = this.cells[win[0]].value === this.cells[win[1]].value && this.cells[win[1]].value === this.cells[win[2]].value;
  95. if (res) {
  96. pos = win;
  97. return true;
  98. }
  99. }
  100. return false;
  101. }, this);
  102. return {
  103. win: win,
  104. pos: pos
  105. };
  106. };
  107. /**
  108. *
  109. * @returns {boolean}
  110. */
  111. Board.prototype.checkDraw = function() {
  112. return this.cells.every(function(cell) {
  113. return cell.value === this.players[0].label || cell.value === this.players[1].label;
  114. }, this);
  115. };
  116. /**
  117. *
  118. * @param player
  119. */
  120. Board.prototype.addPlayer = function(player) {
  121. if (this.players.length < 2) {
  122. var isNew = this.players.filter(function(p) {
  123. return p.id == player.id;
  124. }).length === 0;
  125. if (isNew) {
  126. this.players.push(player);
  127. this.ready = this.players.length === 2;
  128. this.emit(Board.events.PLAYER_CONNECTED, player);
  129. if (this.ready) {
  130. this.enableAll();
  131. this.emit(Board.events.GAME_READY, this.players[0]);
  132. }
  133. }
  134. }
  135. };
  136. module.exports = Board;