Start of examples refactor

This is the general reorg of the examples directory structure, plus additional
guidelines.

calculator, animations and accessibility have been updated to the new standards
and tested, as an example.

Task-number: QTBUG-24133
Change-Id: I76c3b86751d3195ba2a5474ff23afb875765e9a4
Reviewed-by: Alan Alpert <alan.alpert@nokia.com>

1 files changed, 149 insertions, 0 deletions

diff --git a/examples/demos/tic-tac-toe/content/tic-tac-toe.js b/examples/demos/tic-tac-toe/content/tic-tac-toe.js
new file mode 100644
index 0000000000..5a166b750f
--- /dev/null
+++ b/examples/demos/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
+}
+