[SOLVED] Reference error: Can't find variable...

technoman112

Hey there!
Currently trying to follow one of the game guides on qt-project http://qt-project.org/doc/qt-4.8/declarative-tutorials-samegame-samegame1.html.

However when I run the main qml file named "samegame.qml" my terminal give me the error "Reference error: Can't find variable floodFill. Basicly I don't know why this is happening since I have more or less copied what the guide says, would be nice with some advice!

Here's the code so far:

samegame.js
@ var blockSize = 30;
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;

}

function handleClick(xPos, yPos) {
var column = Math.floor(xPos / gameCanvas.blockSize);
var row = Math.floor(yPos / gameCanvas.blockSize);
if (column >= maxColumn || column < 0 || row >= maxRow || row < 0)
return;
if (board[index(column, row)] == null)
return;
//If it's a valid block, remove it and all connected (does nothing if it's not connected)
floodFill(column, row, -1);
if (fillFound <= 0)
return;
gameCanvas.score += (fillFound - 1) * (fillFound - 1);
shuffleDown();
victoryCheck();
}

function victoryCheck() {
//Award bonus points if no blocks left
var deservesBonus = true;
for (var column = maxColumn - 1; column >= 0; column--)
if (board[index(column, maxRow - 1)] != null)
deservesBonus = false;
if (deservesBonus)
gameCanvas.score += 500;

 //Check whether game has finished
 if (deservesBonus || !(floodMoveCheck(0, maxRow - 1, -1)))
     dialog.show("Game Over. Your score is " + gameCanvas.score);

}@

samegame.qml
@import QtQuick 1.0
import "samegame.js" as SameGame

Rectangle {
id: screen

 width: 490; height: 720

 SystemPalette { id: activePalette }

 Item {
     width: parent.width
     anchors { top: parent.top; bottom: toolBar.top }

     Image {
         id: background
         anchors.fill: parent
         source: "img/rsz_3test.jpg"
         fillMode: Image.PreserveAspectCrop
     }

     Item {
         id: gameCanvas

         property int score: 0
         property int blockSize: 40

         width: parent.width - (parent.width % blockSize)
         height: parent.height - (parent.height % blockSize)
         anchors.centerIn: parent

         MouseArea {
             anchors.fill: parent
             onClicked: SameGame.handleClick(mouse.x, mouse.y)
         }
     }
 }

 Rectangle {
     id: toolBar
     width: parent.width; height: 30
     color: activePalette.window
     anchors.bottom: screen.bottom

     Button {
         anchors { left: parent.left; verticalCenter: parent.verticalCenter }
         text: "New Game"
         onClicked: SameGame.startNewGame()
     }

     Text {
         id: score
         anchors { right: parent.right; verticalCenter: parent.verticalCenter }
         text: "Score: Who knows?"
     }
 }

}@

Would be very happy for an answer! Thanks in advance!

olheem

floodFill is a function which is missing in your samegame.js.

Have a look at
http://qt-project.org/doc/qt-4.8/declarative-tutorials-samegame-samegame4-content-samegame-js.html

technoman112

Argh, thanks...didn't realise that they skipped the part where they explained the floodFill function. Guess it sometimes would be worth it to read the guide a bit more thoroughly. Once again Thank you!