diff options
Diffstat (limited to 'examples/declarative/toys/tic-tac-toe/content/tic-tac-toe.js')
-rw-r--r-- | examples/declarative/toys/tic-tac-toe/content/tic-tac-toe.js | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/examples/declarative/toys/tic-tac-toe/content/tic-tac-toe.js b/examples/declarative/toys/tic-tac-toe/content/tic-tac-toe.js new file mode 100644 index 0000000000..5a166b750f --- /dev/null +++ b/examples/declarative/toys/tic-tac-toe/content/tic-tac-toe.js @@ -0,0 +1,149 @@ +function winner(board) +{ + for (var i=0; i<3; ++i) { + if (board.children[i].state != "" + && board.children[i].state == board.children[i+3].state + && board.children[i].state == board.children[i+6].state) + return true + + if (board.children[i*3].state != "" + && board.children[i*3].state == board.children[i*3+1].state + && board.children[i*3].state == board.children[i*3+2].state) + return true + } + + if (board.children[0].state != "" + && board.children[0].state == board.children[4].state != "" + && board.children[0].state == board.children[8].state != "") + return true + + if (board.children[2].state != "" + && board.children[2].state == board.children[4].state != "" + && board.children[2].state == board.children[6].state != "") + return true + + return false +} + +function restartGame() +{ + game.running = true + + for (var i=0; i<9; ++i) + board.children[i].state = "" +} + +function makeMove(pos, player) +{ + board.children[pos].state = player + if (winner(board)) { + gameFinished(player + " wins") + return true + } else { + return false + } +} + +function canPlayAtPos(pos) +{ + return board.children[pos].state == "" +} + +function computerTurn() +{ + var r = Math.random(); + if (r < game.difficulty) + smartAI(); + else + randomAI(); +} + +function smartAI() +{ + function boardCopy(a) { + var ret = new Object; + ret.children = new Array(9); + for (var i = 0; i<9; i++) { + ret.children[i] = new Object; + ret.children[i].state = a.children[i].state; + } + return ret; + } + + for (var i=0; i<9; i++) { + var simpleBoard = boardCopy(board); + if (canPlayAtPos(i)) { + simpleBoard.children[i].state = "O"; + if (winner(simpleBoard)) { + makeMove(i, "O") + return + } + } + } + for (var i=0; i<9; i++) { + var simpleBoard = boardCopy(board); + if (canPlayAtPos(i)) { + simpleBoard.children[i].state = "X"; + if (winner(simpleBoard)) { + makeMove(i, "O") + return + } + } + } + + function thwart(a,b,c) { //If they are at a, try b or c + if (board.children[a].state == "X") { + if (canPlayAtPos(b)) { + makeMove(b, "O") + return true + } else if (canPlayAtPos(c)) { + makeMove(c, "O") + return true + } + } + return false; + } + + if (thwart(4,0,2)) return; + if (thwart(0,4,3)) return; + if (thwart(2,4,1)) return; + if (thwart(6,4,7)) return; + if (thwart(8,4,5)) return; + if (thwart(1,4,2)) return; + if (thwart(3,4,0)) return; + if (thwart(5,4,8)) return; + if (thwart(7,4,6)) return; + + for (var i =0; i<9; i++) { + if (canPlayAtPos(i)) { + makeMove(i, "O") + return + } + } + restartGame(); +} + +function randomAI() +{ + var unfilledPosns = new Array(); + + for (var i=0; i<9; ++i) { + if (canPlayAtPos(i)) + unfilledPosns.push(i); + } + + if (unfilledPosns.length == 0) { + restartGame(); + } else { + var choice = unfilledPosns[Math.floor(Math.random() * unfilledPosns.length)]; + makeMove(choice, "O"); + } +} + +function gameFinished(message) +{ + messageDisplay.text = message + messageDisplay.visible = true + game.running = false +} + |