added fluid animation

2048-qt.pro

@@ -2,7 +2,8 @@ TEMPLATE = app
 
 QT += qml quick widgets
 
-SOURCES += main.cpp
+SOURCES += main.cpp \
+    myclass.cpp
 
 RESOURCES += qml.qrc
 
@@ -15,3 +16,6 @@ include(deployment.pri)
 # Setting the application icon
 RC_ICONS = 2048.ico # On Windows
 ICON = 2048.ico # On Mac OSX
+
+HEADERS += \
+    myclass.h

main.cpp

@@ -1,5 +1,7 @@
 #include <QApplication>
 #include <QQmlApplicationEngine>
+#include "myclass.h"
+//#include <QDebug>
 
 int main(int argc, char *argv[])
 {
@@ -8,5 +10,11 @@ int main(int argc, char *argv[])
     QQmlApplicationEngine engine;
     engine.load(QUrl(QStringLiteral("qrc:///qml/main.qml")));
 
+    MyClass myClass;
+
+//    qDebug() << engine.rootObjects().length();
+    QObject *mainWindow = engine.rootObjects()[0];
+    QObject::connect(mainWindow, SIGNAL(helpMenuTriggered()), &myClass, SLOT(aboutQt()));
+
     return app.exec();
 }

myclass.cpp

@@ -0,0 +1,11 @@
+#include "myclass.h"
+#include <QApplication>
+
+MyClass::MyClass(QObject *parent) :
+    QObject(parent)
+{
+}
+
+void MyClass::aboutQt() {
+    QApplication::aboutQt();
+}

myclass.h

@@ -0,0 +1,18 @@
+#ifndef MYCLASS_H
+#define MYCLASS_H
+
+#include <QObject>
+
+class MyClass : public QObject
+{
+    Q_OBJECT
+public:
+    explicit MyClass(QObject *parent = 0);
+
+signals:
+
+public slots:
+    void aboutQt();
+};
+
+#endif // MYCLASS_H

qml.qrc

@@ -2,5 +2,6 @@
     <qresource prefix="/">
         <file>qml/main.qml</file>
         <file>qml/2048.js</file>
+        <file>qml/Tile.qml</file>
     </qresource>
 </RCC>

qml/2048.js

@@ -2,6 +2,7 @@ var score = 0;
 var bestScore = 0;
 var gridSize = 4;
 var cellValues;
+var tileItems = [];
 var availableCells;
 //var labels = "PRC";
 var labels = "2048";
@@ -38,23 +39,36 @@ function startupFunction() {
             cellValues[i][j] = 0;
     }
 
+    for (i = 0; i < Math.pow(gridSize, 2); i++) {
+        try {
+            tileItems[i].destroy();
+        } catch(e) {
+        }
+        tileItems[i] = null;
+    }
+
     updateAvailableCells();
-    refreshCellViews(2);
+    createNewTileItems(true);
     updateScore();
     console.log("Started a new game");
 }
 
 function moveKey(event) {
     var isMoved = false;
-    var i, j, v, v2;
+    var i, j;
+    var v, v2, mrg, indices;
     var oldScore = score;
     switch (event.key) {
     case Qt.Key_Left:
         for (i = 0; i < gridSize; i++) {
             v = cellValues[i];
-            v2 = mergeVector(v);
+            mrg = mergeVector(v);
+            v2 = mrg[0];
+            indices = mrg[1];
+
             if (! arraysIdentical(v,v2)) {
                 isMoved = true;
+                moveMergeTilesLeftRight(i, v, v2, indices, true);
                 cellValues[i] = v2;
             }
         }
@@ -63,10 +77,18 @@ function moveKey(event) {
         for (i = 0; i < gridSize; i++) {
             v = cellValues[i].slice();
             v.reverse();
-            v2 = mergeVector(v);
+            mrg = mergeVector(v);
+            v2 = mrg[0];
+            indices = mrg[1];
+
             if (! arraysIdentical(v,v2)) {
                 isMoved = true;
+                v.reverse();
                 v2.reverse();
+                indices.reverse();
+                for (j = 0; j < indices.length; j++)
+                    indices[j] = gridSize - 1 - indices[j];
+                moveMergeTilesLeftRight(i, v, v2, indices, false);
                 cellValues[i] = v2;
             }
         }
@@ -74,9 +96,13 @@ function moveKey(event) {
     case Qt.Key_Up:
         for (i = 0; i < gridSize; i++) {
             v = cellValues.map(function(row) {return row[i];});
-            v2 = mergeVector(v);
+            mrg = mergeVector(v);
+            v2 = mrg[0];
+            indices = mrg[1];
+
             if (! arraysIdentical(v,v2)) {
                 isMoved = true;
+                moveMergeTilesUpDown(i, v, v2, indices, true);
                 for (j = 0; j < gridSize; j++) {
                     cellValues[j][i] = v2[j];
                 }
@@ -87,13 +113,20 @@ function moveKey(event) {
         for (i = 0; i < gridSize; i++) {
             v = cellValues.map(function(row) {return row[i];});
             v.reverse();
-            v2 = mergeVector(v);
+            mrg = mergeVector(v);
+            v2 = mrg[0];
+            indices = mrg[1];
+
             if (! arraysIdentical(v,v2)) {
                 isMoved = true;
+                v.reverse();
                 v2.reverse();
+                indices.reverse();
                 for (j = 0; j < gridSize; j++) {
+                    indices[j] = gridSize - 1 - indices[j];
                     cellValues[j][i] = v2[j];
                 }
+                moveMergeTilesUpDown(i, v, v2, indices, false);
             }
         }
         break;
@@ -101,7 +134,7 @@ function moveKey(event) {
 
     if (isMoved) {
         updateAvailableCells();
-        refreshCellViews(1);
+        createNewTileItems(false);
         if (oldScore !== score) {
             if (bestScore < score) {
                 bestScore = score;
@@ -126,32 +159,46 @@ function ind2sub(ind) {
 }
 
 function mergeVector(v0) {
+    var i, j;
+    var vlen = v0.length;
+    var indices = [];
     // Pass 1: remove zero elements
-    var v = v0.slice();
+    var v = [];
-    var i = v.length;
+    for (i = 0; i < vlen; i++) {
-    while (i--) {
+        indices[i] = v.length;
-        if (v[i] === 0) {
+        if (v0[i] > 0) {
-            v.splice(i, 1);
+            v.push(v0[i]);
         }
     }
+
     // Pass 2: merge same elements
     var v2 = [];
-    while (v.length > 0) {
+    for (i = 0; i < v.length; i++) {
-        if (v.length > 1 && v[0] === v[1]) {
+        if (i === v.length - 1) {
-            v2.push(v[0] + 1);
+            // The last element
-            score += parseInt(Math.pow(2, v[0]+1));
+            v2.push(v[i]);
-            v.splice(0, 2);
         } else {
-            v2.push(v[0]);
+            if (v[i] === v[i+1]) {
-            v.splice(0, 1);
+                // move all right-side elements to left by 1
+                for (j = 0; j < vlen; j++) {
+                    if (indices[j] > v2.length)
+                        indices[j] -= 1;
+                }
+                // Merge i-1 and i
+                v2.push(v[i] + 1);
+                score += Math.pow(2, v[i] + 1);
+                i++;
+            } else {
+                v2.push(v[i]);
+            }
         }
     }
 
     // Fill the gaps with zeros
-    for (i = v2.length; i < v0.length; i++)
+    for (i = v2.length; i < vlen; i++)
         v2[i] = 0;
 
-    return v2;
+    return [v2, indices];
 }
 
 function removeElementsWithValue(arr, val) {
@@ -184,37 +231,29 @@ function updateAvailableCells() {
     }
 }
 
-function refreshCellViews(n) {
+function createNewTileItems(isStartup) {
-    var i, sub;
+    var i, sub, nTiles;
+
+    if (isStartup) {
+        nTiles = 2;
+    } else {
+        nTiles = 1;
+    }
 
     // Popup a new number
-    for (i = 0; i < n; i++) {
+    for (i = 0; i < nTiles; i++) {
         var oneOrTwo = Math.random() < 0.9 ? 1: 2;
         var randomCellId = availableCells[Math.floor(Math.random() * availableCells.length)];
 
         sub = ind2sub(randomCellId);
         cellValues[sub[0]][sub[1]] = oneOrTwo;
 
+        tileItems[randomCellId] = createTileObject(randomCellId, oneOrTwo, isStartup);
+
         // Mark this cell as unavailable
         var idx = availableCells.indexOf(randomCellId);
         availableCells.splice(idx, 1);
     }
-
-    // Refresh the cell views
-    for (i = 0; i < cells.count; i++) {
-        sub = ind2sub(i);
-        var cv = cellValues[sub[0]][sub[1]];
-        var sty = computeTileStyle(cv);
-        if ( cv === 0) {
-            cells.itemAt(i).tileText = "";
-        } else {
-            cells.itemAt(i).tileText = labelFunc(cv);
-        }
-        cells.itemAt(i).color = sty.bgColor;
-        cells.itemAt(i).tileColor = sty.fgColor;
-        cells.itemAt(i).tileFontSize = sty.fontSize;
-    }
-
 }
 
 function updateScore() {
@@ -292,3 +331,87 @@ function maxTileValue() {
     }
     return mv;
 }
+
+function createTileObject(ind, n, isStartup) {
+    var component;
+    var tile;
+    var sty = computeTileStyle(n);
+    var tileText = labelFunc(n);
+
+    component = Qt.createComponent("Tile.qml");
+    tile = component.createObject(tileGrid, {"x": cells.itemAt(ind).x, "y": cells.itemAt(ind).y, "color": sty.bgColor, "tileColor": sty.fgColor, "tileFontSize": sty.fontSize, "tileText": tileText});
+    if (! isStartup) {
+        tile.runNewTileAnim = true;
+    }
+
+    if (tile == null) {
+        // Error Handling
+        console.log("Error creating a new tile");
+    }
+
+    return tile;
+}
+
+function moveMergeTilesLeftRight(i, v, v2, indices, left) {
+    var j0, j;
+    for (j0 = 0; j0 < v.length; j0++) {
+        if (left) {
+            j = j0;
+        } else {
+            j = v.length - 1 - j0;
+        }
+
+        if (v[j] > 0 && indices[j] !== j) {
+            if (v2[indices[j]] > v[j] && tileItems[gridSize*i+indices[j]] !== null) {
+                // Move and merge
+                tileItems[gridSize*i+j].destroyFlag = true;
+                tileItems[gridSize*i+j].z = -1;
+                tileItems[gridSize*i+j].x = cells.itemAt(gridSize*i+indices[j]).x;
+//                tileItems[gridSize*i+j].destroy();
+
+                var sty = computeTileStyle(v2[indices[j]]);
+                tileItems[gridSize*i+indices[j]].tileText = labelFunc(v2[indices[j]]);
+                tileItems[gridSize*i+indices[j]].color = sty.bgColor;
+                tileItems[gridSize*i+indices[j]].tileColor = sty.fgColor;
+                tileItems[gridSize*i+indices[j]].tileFontSize = sty.fontSize;
+            } else {
+                // Move only
+                tileItems[gridSize*i+j].x = cells.itemAt(gridSize*i+indices[j]).x;
+                tileItems[gridSize*i+indices[j]] = tileItems[gridSize*i+j];
+            }
+            tileItems[gridSize*i+j] = null;
+        }
+    }
+}
+
+function moveMergeTilesUpDown(i, v, v2, indices, up) {
+    var j0, j;
+    for (j0 = 0; j0 < v.length; j0++) {
+        if (up) {
+            j = j0;
+        } else {
+            j = v.length - 1 - j0;
+        }
+
+        if (v[j] > 0 && indices[j] !== j) {
+            if (v2[indices[j]] > v[j] && tileItems[gridSize*indices[j]+i] !== null) {
+                // Move and merge
+                tileItems[gridSize*j+i].destroyFlag = true;
+                tileItems[gridSize*j+i].z = -1;
+                tileItems[gridSize*j+i].y = cells.itemAt(gridSize*indices[j]+i).y;
+//                tileItems[gridSize*j+i].destroy();
+
+                var sty = computeTileStyle(v2[indices[j]]);
+                tileItems[gridSize*indices[j]+i].tileText = labelFunc(v2[indices[j]]);
+                tileItems[gridSize*indices[j]+i].color = sty.bgColor;
+                tileItems[gridSize*indices[j]+i].tileColor = sty.fgColor;
+                tileItems[gridSize*indices[j]+i].tileFontSize = sty.fontSize;
+            } else {
+                // Move only
+                tileItems[gridSize*j+i].y = cells.itemAt(gridSize*indices[j]+i).y;
+                tileItems[gridSize*indices[j]+i] = tileItems[gridSize*j+i];
+            }
+            tileItems[gridSize*j+i] = null;
+        }
+    }
+}

qml/Tile.qml

@@ -0,0 +1,79 @@
+import QtQuick 2.2
+
+Rectangle {
+    id: tileContainer
+    width: 425/4
+    height: 425/4
+    radius: 3
+    color: "white"
+    property string tileText: ""
+    property int tileFontSize: 55
+    property color tileColor: "black"
+    property int moveAnimTime: 100
+    property int newTileAnimTime: 200
+    property bool runNewTileAnim: false
+    property bool destroyFlag: false
+
+    Text {
+        id: tileLabel
+        text: tileText
+        color: tileColor
+        font.pixelSize: tileFontSize
+        font.bold: true
+        anchors.centerIn: parent
+        Behavior on text {
+            PropertyAnimation {
+                duration: moveAnimTime
+            }
+        }
+    }
+
+    ParallelAnimation {
+        running: runNewTileAnim
+        NumberAnimation {
+            target: tileContainer
+            property: "opacity"
+            from: 0.0
+            to: 1.0
+            duration: newTileAnimTime
+        }
+
+        ScaleAnimator {
+            target: tileContainer
+            from: 0
+            to: 1
+            duration: newTileAnimTime
+            easing.type: Easing.OutQuad
+        }
+    }
+
+    Behavior on color {
+        ColorAnimation {
+            duration: moveAnimTime
+        }
+    }
+
+    Behavior on y {
+        NumberAnimation {
+            easing.type: Easing.InQuad
+            duration: moveAnimTime
+            onRunningChanged: {
+                if ((!running) && destroyFlag) {
+                    tileContainer.destroy();
+                }
+            }
+        }
+    }
+
+    Behavior on x {
+        NumberAnimation {
+            easing.type: Easing.InQuad
+            duration: moveAnimTime
+            onRunningChanged: {
+                if ((!running) && destroyFlag) {
+                    tileContainer.destroy();
+                }
+            }
+        }
+    }
+}

qml/main.qml

@@ -6,6 +6,7 @@ import QtQuick.Window 2.1
 import "2048.js" as MyScript
 
 ApplicationWindow {
+    id: mainWindow
     visible: true
     width: 550
     height: 740
@@ -15,6 +16,8 @@ ApplicationWindow {
     x: (Screen.width - width) / 2
     y: (Screen.height - height) / 2
 
+    signal helpMenuTriggered
+
     menuBar: MenuBar {
         Menu {
             title: qsTr("File")
@@ -29,6 +32,14 @@ ApplicationWindow {
                 onTriggered: Qt.quit();
             }
         }
+        Menu {
+            id: helpMenu
+            title: qsTr("Help")
+            MenuItem {
+                text: "About Qt"
+                onTriggered: mainWindow.helpMenuTriggered()
+            }
+        }
     }
 
 
@@ -132,6 +143,7 @@ ApplicationWindow {
             radius: 6
 
             Grid {
+                id: tileGrid
                 x: 15;
                 y: 15;
                 rows: 4; columns: 4; spacing: 15
@@ -143,23 +155,11 @@ ApplicationWindow {
                         width: 425/4; height: 425/4
                         radius: 3
                         color: helper.myColors.bggray
-                        property string tileText: ""
-                        property int tileFontSize: 55
-                        property color tileColor: helper.myColors.fgdark
-
-                        Text {
-                            text: tileText
-                            color: tileColor
-                            font.pixelSize: tileFontSize
-                            font.bold: true
-                            anchors.centerIn: parent
-                        }
                     }
                 }
             }
         }
 
-
         MessageDialog {
             id: deadMessage
             title: "Game Over"