<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>GameCanvas.qml Example File | Qt Quick 5.9</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.9</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-demos-maroon-example.html">Qt Quick Demo - Maroon in Trouble</a></td><td >GameCanvas.qml Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <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 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** 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, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</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> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>