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<h1 class="title">GameCanvas.qml Example File</h1>
<span class="subtitle">demos/maroon/content/GameCanvas.qml</span>
<!-- $$$demos/maroon/content/GameCanvas.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
**
****************************************************************************/</span>
import QtQuick 2.0
import "logic.js" as Logic
import "towers" as Towers
<span class="type"><a href="qml-qtquick-item.html">Item</a></span> {
<span class="name">id</span>: <span class="name">grid</span>
property <span class="type">int</span> <span class="name">squareSize</span>: <span class="number">64</span>
property <span class="type">int</span> <span class="name">rows</span>: <span class="number">6</span>
property <span class="type">int</span> <span class="name">cols</span>: <span class="number">4</span>
property <span class="type"><a href="qml-qtquick-item.html">Item</a></span> <span class="name">canvas</span>: <span class="name">grid</span>
property <span class="type">int</span> <span class="name">score</span>: <span class="number">0</span>
property <span class="type">int</span> <span class="name">coins</span>: <span class="number">100</span>
property <span class="type">int</span> <span class="name">lives</span>: <span class="number">3</span>
property <span class="type">int</span> <span class="name">waveNumber</span>: <span class="number">0</span>
property <span class="type">int</span> <span class="name">waveProgress</span>: <span class="number">0</span>
property <span class="type">var</span> <span class="name">towers</span>
property <span class="type">var</span> <span class="name">mobs</span>
property <span class="type">bool</span> <span class="name">gameRunning</span>: <span class="number">false</span>
property <span class="type">bool</span> <span class="name">gameOver</span>: <span class="number">false</span>
property <span class="type">bool</span> <span class="name">errored</span>: <span class="number">false</span>
property <span class="type">string</span> <span class="name">errorString</span>: <span class="string">""</span>
<span class="name">width</span>: <span class="name">cols</span> <span class="operator">*</span> <span class="name">squareSize</span>
<span class="name">height</span>: <span class="name">rows</span> <span class="operator">*</span> <span class="name">squareSize</span>
<span class="keyword">function</span> <span class="name">freshState</span>() {
<span class="name">lives</span> <span class="operator">=</span> <span class="number">3</span>
<span class="name">coins</span> <span class="operator">=</span> <span class="number">100</span>
<span class="name">score</span> <span class="operator">=</span> <span class="number">0</span>
<span class="name">waveNumber</span> <span class="operator">=</span> <span class="number">0</span>
<span class="name">waveProgress</span> <span class="operator">=</span> <span class="number">0</span>
<span class="name">gameOver</span> <span class="operator">=</span> <span class="number">false</span>
<span class="name">gameRunning</span> <span class="operator">=</span> <span class="number">false</span>
<span class="name">towerMenu</span>.<span class="name">shown</span> <span class="operator">=</span> <span class="number">false</span>
<span class="name">helpButton</span>.<span class="name">comeBack</span>();
}
<span class="type"><a href="qml-qtquick-text.html">Text</a></span> {
<span class="name">id</span>: <span class="name">errorText</span> <span class="comment">// Mostly for debug purposes</span>
<span class="name">text</span>: <span class="name">errorString</span>
<span class="name">visible</span>: <span class="name">errored</span>
<span class="name">color</span>: <span class="string">"red"</span>
<span class="name">font</span>.pixelSize: <span class="number">18</span>
<span class="name">wrapMode</span>: <span class="name">Text</span>.<span class="name">WordWrap</span>
<span class="name">width</span>: <span class="name">parent</span>.<span class="name">width</span> <span class="operator">/</span> <span class="number">1.2</span>
<span class="name">height</span>: <span class="name">parent</span>.<span class="name">height</span> <span class="operator">/</span> <span class="number">1.2</span>
<span class="name">anchors</span>.centerIn: <span class="name">parent</span>
<span class="name">z</span>: <span class="number">1000</span>
}
<span class="type">Timer</span> {
<span class="name">interval</span>: <span class="number">16</span>
<span class="name">running</span>: <span class="number">true</span>
<span class="name">repeat</span>: <span class="number">true</span>
<span class="name">onTriggered</span>: <span class="name">Logic</span>.<span class="name">tick</span>()
}
<span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
<span class="name">id</span>: <span class="name">ma</span>
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="name">onClicked</span>: {
<span class="keyword">if</span> (<span class="name">towerMenu</span>.<span class="name">visible</span>)
<span class="name">towerMenu</span>.<span class="name">finish</span>()
<span class="keyword">else</span>
<span class="name">towerMenu</span>.<span class="name">open</span>(<span class="name">mouse</span>.<span class="name">x</span>, <span class="name">mouse</span>.<span class="name">y</span>)
}
}
<span class="type"><a href="qml-qtquick-image.html">Image</a></span> {
<span class="name">id</span>: <span class="name">towerMenu</span>
<span class="name">visible</span>: <span class="number">false</span>
<span class="name">z</span>: <span class="number">1500</span>
<span class="name">scale</span>: <span class="number">0.9</span>
<span class="name">opacity</span>: <span class="number">0.7</span>
property <span class="type">int</span> <span class="name">dragDistance</span>: <span class="number">16</span>
property <span class="type">int</span> <span class="name">targetRow</span>: <span class="number">0</span>
property <span class="type">int</span> <span class="name">targetCol</span>: <span class="number">0</span>
property <span class="type">bool</span> <span class="name">shown</span>: <span class="number">false</span>
property <span class="type">bool</span> <span class="name">towerExists</span>: <span class="number">false</span>
<span class="keyword">function</span> <span class="name">finish</span>() {
<span class="name">shown</span> <span class="operator">=</span> <span class="number">false</span>
}
<span class="keyword">function</span> <span class="name">open</span>(<span class="name">xp</span>,yp) {
<span class="keyword">if</span> (!<span class="name">grid</span>.<span class="name">gameRunning</span>)
<span class="keyword">return</span>
<span class="name">targetRow</span> <span class="operator">=</span> <span class="name">Logic</span>.<span class="name">row</span>(<span class="name">yp</span>)
<span class="name">targetCol</span> <span class="operator">=</span> <span class="name">Logic</span>.<span class="name">col</span>(<span class="name">xp</span>)
<span class="keyword">if</span> (<span class="name">targetRow</span> <span class="operator">==</span> <span class="number">0</span>)
<span class="name">towerMenu</span>.<span class="name">y</span> <span class="operator">=</span> (<span class="name">targetRow</span> <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> <span class="name">grid</span>.<span class="name">squareSize</span>
<span class="keyword">else</span>
<span class="name">towerMenu</span>.<span class="name">y</span> <span class="operator">=</span> (<span class="name">targetRow</span> <span class="operator">-</span> <span class="number">1</span>) <span class="operator">*</span> <span class="name">grid</span>.<span class="name">squareSize</span>
<span class="name">towerExists</span> <span class="operator">=</span> (<span class="name">grid</span>.<span class="name">towers</span>[<span class="name">Logic</span>.<span class="name">towerIdx</span>(<span class="name">targetCol</span>, <span class="name">targetRow</span>)] <span class="operator">!=</span> <span class="number">null</span>)
<span class="name">shown</span> <span class="operator">=</span> <span class="number">true</span>
<span class="name">helpButton</span>.<span class="name">goAway</span>();
}
<span class="name">states</span>: <span class="name">State</span> {
<span class="name">name</span>: <span class="string">"shown"</span>; <span class="name">when</span>: <span class="name">towerMenu</span>.<span class="name">shown</span> <span class="operator">&&</span> !<span class="name">grid</span>.<span class="name">gameOver</span>
<span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">towerMenu</span>; <span class="name">visible</span>: <span class="number">true</span>; <span class="name">scale</span>: <span class="number">1</span>; <span class="name">opacity</span>: <span class="number">1</span> }
}
<span class="name">transitions</span>: <span class="name">Transition</span> {
<span class="type"><a href="qml-qtquick-propertyaction.html">PropertyAction</a></span> { <span class="name">property</span>: <span class="string">"visible"</span> }
<span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">properties</span>: <span class="string">"opacity,scale"</span>; <span class="name">duration</span>: <span class="number">500</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">OutElastic</span> }
}
<span class="name">x</span>: -<span class="number">32</span>
<span class="name">source</span>: <span class="string">"gfx/dialog.png"</span>
<span class="type"><a href="qml-qtquick-row.html">Row</a></span> {
<span class="name">id</span>: <span class="name">buttonRow</span>
<span class="name">height</span>: <span class="number">100</span>
<span class="name">anchors</span>.centerIn: <span class="name">parent</span>
<span class="name">spacing</span>: <span class="number">8</span>
<span class="type">BuildButton</span> {
<span class="name">row</span>: <span class="name">towerMenu</span>.<span class="name">targetRow</span>; <span class="name">col</span>: <span class="name">towerMenu</span>.<span class="name">targetCol</span>
<span class="name">anchors</span>.verticalCenter: <span class="name">parent</span>.<span class="name">verticalCenter</span>
<span class="name">towerType</span>: <span class="number">1</span>; <span class="name">index</span>: <span class="number">0</span>
<span class="name">canBuild</span>: !<span class="name">towerMenu</span>.<span class="name">towerExists</span>
<span class="name">source</span>: <span class="string">"gfx/dialog-melee.png"</span>
<span class="name">onClicked</span>: <span class="name">towerMenu</span>.<span class="name">finish</span>()
}
<span class="type">BuildButton</span> {
<span class="name">row</span>: <span class="name">towerMenu</span>.<span class="name">targetRow</span>; <span class="name">col</span>: <span class="name">towerMenu</span>.<span class="name">targetCol</span>
<span class="name">anchors</span>.verticalCenter: <span class="name">parent</span>.<span class="name">verticalCenter</span>
<span class="name">towerType</span>: <span class="number">2</span>; <span class="name">index</span>: <span class="number">1</span>
<span class="name">canBuild</span>: !<span class="name">towerMenu</span>.<span class="name">towerExists</span>
<span class="name">source</span>: <span class="string">"gfx/dialog-shooter.png"</span>
<span class="name">onClicked</span>: <span class="name">towerMenu</span>.<span class="name">finish</span>()
}
<span class="type">BuildButton</span> {
<span class="name">row</span>: <span class="name">towerMenu</span>.<span class="name">targetRow</span>; <span class="name">col</span>: <span class="name">towerMenu</span>.<span class="name">targetCol</span>
<span class="name">anchors</span>.verticalCenter: <span class="name">parent</span>.<span class="name">verticalCenter</span>
<span class="name">towerType</span>: <span class="number">3</span>; <span class="name">index</span>: <span class="number">2</span>
<span class="name">canBuild</span>: !<span class="name">towerMenu</span>.<span class="name">towerExists</span>
<span class="name">source</span>: <span class="string">"gfx/dialog-bomb.png"</span>
<span class="name">onClicked</span>: <span class="name">towerMenu</span>.<span class="name">finish</span>()
}
<span class="type">BuildButton</span> {
<span class="name">row</span>: <span class="name">towerMenu</span>.<span class="name">targetRow</span>; <span class="name">col</span>: <span class="name">towerMenu</span>.<span class="name">targetCol</span>
<span class="name">anchors</span>.verticalCenter: <span class="name">parent</span>.<span class="name">verticalCenter</span>
<span class="name">towerType</span>: <span class="number">4</span>; <span class="name">index</span>: <span class="number">3</span>
<span class="name">canBuild</span>: !<span class="name">towerMenu</span>.<span class="name">towerExists</span>
<span class="name">source</span>: <span class="string">"gfx/dialog-factory.png"</span>
<span class="name">onClicked</span>: <span class="name">towerMenu</span>.<span class="name">finish</span>()
}
}
}
<span class="name">Keys</span>.onPressed: { <span class="comment">// Cheat Codes while Testing</span>
<span class="keyword">if</span> (<span class="name">event</span>.<span class="name">key</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">Key_Up</span> <span class="operator">&&</span> (<span class="name">event</span>.<span class="name">modifiers</span> <span class="operator">&</span> <span class="name">Qt</span>.<span class="name">ShiftModifier</span>))
<span class="name">grid</span>.<span class="name">coins</span> <span class="operator">+=</span> <span class="number">10</span>;
<span class="keyword">if</span> (<span class="name">event</span>.<span class="name">key</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">Key_Left</span> <span class="operator">&&</span> (<span class="name">event</span>.<span class="name">modifiers</span> <span class="operator">&</span> <span class="name">Qt</span>.<span class="name">ShiftModifier</span>))
<span class="name">grid</span>.<span class="name">lives</span> <span class="operator">+=</span> <span class="number">1</span>;
<span class="keyword">if</span> (<span class="name">event</span>.<span class="name">key</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">Key_Down</span> <span class="operator">&&</span> (<span class="name">event</span>.<span class="name">modifiers</span> <span class="operator">&</span> <span class="name">Qt</span>.<span class="name">ShiftModifier</span>))
<span class="name">Logic</span>.<span class="name">gameState</span>.<span class="name">waveProgress</span> <span class="operator">+=</span> <span class="number">1000</span>;
<span class="keyword">if</span> (<span class="name">event</span>.<span class="name">key</span> <span class="operator">==</span> <span class="name">Qt</span>.<span class="name">Key_Right</span> <span class="operator">&&</span> (<span class="name">event</span>.<span class="name">modifiers</span> <span class="operator">&</span> <span class="name">Qt</span>.<span class="name">ShiftModifier</span>))
<span class="name">Logic</span>.<span class="name">endGame</span>();
}
<span class="type"><a href="qml-qtquick-image.html">Image</a></span> {
<span class="name">id</span>: <span class="name">helpButton</span>
<span class="name">z</span>: <span class="number">1010</span>
<span class="name">source</span>: <span class="string">"gfx/button-help.png"</span>
<span class="keyword">function</span> <span class="name">goAway</span>() {
<span class="name">helpMA</span>.<span class="name">enabled</span> <span class="operator">=</span> <span class="number">false</span>;
<span class="name">helpButton</span>.<span class="name">opacity</span> <span class="operator">=</span> <span class="number">0</span>;
}
<span class="keyword">function</span> <span class="name">comeBack</span>() {
<span class="name">helpMA</span>.<span class="name">enabled</span> <span class="operator">=</span> <span class="number">true</span>;
<span class="name">helpButton</span>.<span class="name">opacity</span> <span class="operator">=</span> <span class="number">1</span>;
}
Behavior on <span class="name">opacity</span> { <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> {} }
<span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
<span class="name">id</span>: <span class="name">helpMA</span>
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="name">onClicked</span>: {<span class="name">helpImage</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">true</span>; <span class="name">helpButton</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">false</span>;}
}
<span class="name">anchors</span>.horizontalCenter: <span class="name">parent</span>.<span class="name">horizontalCenter</span>
<span class="name">anchors</span>.bottom: <span class="name">parent</span>.<span class="name">bottom</span>
<span class="name">anchors</span>.bottomMargin: <span class="number">0</span>
}
<span class="type"><a href="qml-qtquick-image.html">Image</a></span> {
<span class="name">id</span>: <span class="name">helpImage</span>
<span class="name">z</span>: <span class="number">1010</span>
<span class="name">source</span>: <span class="string">"gfx/help.png"</span>
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="name">visible</span>: <span class="number">false</span>
<span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="name">onClicked</span>: <span class="name">helpImage</span>.<span class="name">visible</span> <span class="operator">=</span> <span class="number">false</span>;
}
}
}
</pre>
</div>
<!-- @@@demos/maroon/content/GameCanvas.qml -->
</div>
</div>
</div>
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