Qt 4.7: samegame.js Example File (declarative/tutorials/samegame/samegame2/samegame.js)

Qt Reference Documentation

# samegame.js Example File

declarative/tutorials/samegame/samegame2/samegame.js

     var blockSize = 40;
     var maxColumn = 10;
     var maxRow = 15;
     var maxIndex = maxColumn * maxRow;
     var board = new Array(maxIndex);
     var component;

     //Index function used instead of a 2D array
     function index(column, row) {
         return column + (row * maxColumn);
     }

     function startNewGame() {
         //Delete blocks from previous game
         for (var i = 0; i < maxIndex; i++) {
             if (board[i] != null)
                 board[i].destroy();
         }

         //Calculate board size
         maxColumn = Math.floor(background.width / blockSize);
         maxRow = Math.floor(background.height / blockSize);
         maxIndex = maxRow * maxColumn;

         //Initialize Board
         board = new Array(maxIndex);
         for (var column = 0; column < maxColumn; column++) {
             for (var row = 0; row < maxRow; row++) {
                 board[index(column, row)] = null;
                 createBlock(column, row);
             }
         }
     }

     function createBlock(column, row) {
         if (component == null)
             component = Qt.createComponent("Block.qml");

         // Note that if Block.qml was not a local file, component.status would be
         // Loading and we should wait for the component's statusChanged() signal to
         // know when the file is downloaded and ready before calling createObject().
         if (component.status == Component.Ready) {
             var dynamicObject = component.createObject(background);
             if (dynamicObject == null) {
                 console.log("error creating block");
                 console.log(component.errorString());
                 return false;
             }
             dynamicObject.x = column * blockSize;
             dynamicObject.y = row * blockSize;
             dynamicObject.width = blockSize;
             dynamicObject.height = blockSize;
             board[index(column, row)] = dynamicObject;
         } else {
             console.log("error loading block component");
             console.log(component.errorString());
             return false;
         }
         return true;
     }