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  252. <h1 class="page">jMonkeyEngine SDK: Creating Projects</h1>
  253. <div id="preamble">
  254. <div class="sectionbody">
  255. <div class="paragraph">
  256. <p>The jMonkeyEngine SDK makes it easy to get started with developing 3-D games based on the jMonkeyEngine.</p>
  257. </div>
  258. </div>
  259. </div>
  260. <div class="sect1">
  261. <h2 id="creating-a-new-jmonkeyengine-project"><a class="anchor" href="#creating-a-new-jmonkeyengine-project"></a>Creating a New jMonkeyEngine Project</h2>
  262. <div class="sectionbody">
  263. <div class="olist arabic">
  264. <ol class="arabic">
  265. <li>
  266. <p>Choose <code><span class="menuseq"><b class="menu">File</b>&#160;<i class="fa fa-angle-right caret"></i> <b class="menuitem">New Project</b></span></code> from the main menu.</p>
  267. </li>
  268. <li>
  269. <p>In the New Project Wizard, select the template <code><span class="menuseq"><b class="menu">JME3</b>&#160;<i class="fa fa-angle-right caret"></i> <b class="menuitem">Basic Game</b></span></code>.</p>
  270. </li>
  271. <li>
  272. <p>Click next to specify a project name, and the path where to store your new project.</p>
  273. </li>
  274. <li>
  275. <p>Click Finish. A skeleton application is created and opens in the Project Explorer.</p>
  276. <div class="ulist">
  277. <ul>
  278. <li>
  279. <p>This basic jme3 application is based on the SimpleApplication class to allow an easy start with jme3.</p>
  280. </li>
  281. <li>
  282. <p>You can click the run button to run it: You will see a blue cube.</p>
  283. </li>
  284. </ul>
  285. </div>
  286. </li>
  287. </ol>
  288. </div>
  289. <div class="sect2">
  290. <h3 id="project-structure"><a class="anchor" href="#project-structure"></a>Project Structure</h3>
  291. <div class="imageblock text-center">
  292. <div class="content">
  293. <img src="../_images/sdk/jmonkeyplatform-docu-4.png" alt="jmonkeyplatform-docu-4.png" width="421" height="298">
  294. </div>
  295. </div>
  296. <div class="paragraph">
  297. <p>Let&#8217;s have a look at the abstract project structure in the Project Explorer. (<kbd>Ctrl</kbd>+<kbd>1</kbd>).</p>
  298. </div>
  299. <div class="ulist">
  300. <ul>
  301. <li>
  302. <p><strong>Project Assets node:</strong> These directories have been created for you to store your games assets, such as fonts, materials, models, shaders, sounds, and textures. For a newly created project, these directories are empty.</p>
  303. </li>
  304. <li>
  305. <p><strong>Source Packages node:</strong> This is where you manage your packages and classes. For a newly created project, it contains one package and one class, <code>Main.java</code>. Double click <code>Main.java</code> to open it in the editor.</p>
  306. </li>
  307. <li>
  308. <p><strong>Libraries node:</strong> An overview of all libraies on your game&#8217;s classpath. The classpath is already set-up for the jme3 framework (including LWJGL, Bullet, Nifty <abbr title="Graphical User Interface">GUI</abbr>, etc).</p>
  309. </li>
  310. </ul>
  311. </div>
  312. </div>
  313. <div class="sect2">
  314. <h3 id="directory-structure"><a class="anchor" href="#directory-structure"></a>Directory Structure</h3>
  315. <div class="paragraph">
  316. <p>Now let&#8217;s have a look at the project&#8217;s file structure in the File Explorer (<kbd>Ctrl</kbd>+<kbd>2</kbd>). This explorer shows the physical directory structure on your hard drive.</p>
  317. </div>
  318. <div class="ulist">
  319. <ul>
  320. <li>
  321. <p><strong>assets</strong> – This directory corresponds to the Project Assets node. It is needed for the assetManager.</p>
  322. <div class="paragraph">
  323. <p>This is the recommended internal structure:</p>
  324. </div>
  325. <div class="ulist">
  326. <ul>
  327. <li>
  328. <p><code>assets/Interface</code></p>
  329. </li>
  330. <li>
  331. <p><code>assets/MatDefs</code></p>
  332. </li>
  333. <li>
  334. <p><code>assets/Materials</code></p>
  335. </li>
  336. <li>
  337. <p><code>assets/Models</code></p>
  338. </li>
  339. <li>
  340. <p><code>assets/Scenes</code></p>
  341. </li>
  342. <li>
  343. <p><code>assets/Shaders</code></p>
  344. </li>
  345. <li>
  346. <p><code>assets/Sounds</code></p>
  347. </li>
  348. <li>
  349. <p><code>assets/Textures</code></p>
  350. </li>
  351. </ul>
  352. </div>
  353. </li>
  354. <li>
  355. <p><strong>src</strong> – This directory corresponds to the Source Packages node. Your sources code goes here.</p>
  356. </li>
  357. <li>
  358. <p><strong>nbproject</strong> – This is meta data used by the jMonkeyEngine SDK (don&#8217;t edit).</p>
  359. </li>
  360. <li>
  361. <p><strong>build.xml</strong> – This is an Ant build script that is hooked up to the clean/build/run/test actions in the jMonkeyEngine SDK. It loads a default build script, and allows you to further customize the build process. The Ant script also assures that you are able to clean/build/run/test your application outside of the jMonkeyEngine SDK – e.g. from the command line.</p>
  362. </li>
  363. <li>
  364. <p><strong>build</strong> – This directory contains the compiled classes. (Will be generated by the jMonkeyEngine SDK when you build the project.)</p>
  365. </li>
  366. <li>
  367. <p><strong>dist</strong> – This directory contains the executable JAR files. (Will be generated by the jMonkeyEngine SDK when you build the project.)</p>
  368. </li>
  369. <li>
  370. <p><strong>test</strong> – The jMonkeyEngine SDK will store JUnit tests here if you create any. (Optional.)</p>
  371. </li>
  372. </ul>
  373. </div>
  374. </div>
  375. <div class="sect2">
  376. <h3 id="project-configuration"><a class="anchor" href="#project-configuration"></a>Project Configuration</h3>
  377. <div class="paragraph">
  378. <p>[RMB] select the project and from the menu open the project <code>Properties</code>.</p>
  379. </div>
  380. <div class="ulist">
  381. <ul>
  382. <li>
  383. <p>In the <code>Run</code> section:</p>
  384. <div class="ulist">
  385. <ul>
  386. <li>
  387. <p>Specify the main class of your project. (Pressing <kbd>F6</kbd> runs this main class.)</p>
  388. </li>
  389. <li>
  390. <p>You can optionally configure JVM options and command line parameters. In most cases, set the <code>-Xms VMOption [NUMBER] m</code> for the memory usage.</p>
  391. <div class="ulist">
  392. <ul>
  393. <li>
  394. <p>For example (-Xms500m).</p>
  395. </li>
  396. <li>
  397. <p>see <a href="http://performance.netbeans.org/howto/jvmswitches/">http://performance.netbeans.org/howto/jvmswitches/</a>).</p>
  398. </li>
  399. </ul>
  400. </div>
  401. </li>
  402. </ul>
  403. </div>
  404. </li>
  405. <li>
  406. <p>In the Application section:</p>
  407. <div class="ulist">
  408. <ul>
  409. <li>
  410. <p>Specify the game title (by default the game will be named <code>BasicGame</code>).</p>
  411. </li>
  412. <li>
  413. <p>Specify the vendor name (your name), a short description, your project&#8217;s homepage, and a splash screen.</p>
  414. </li>
  415. </ul>
  416. </div>
  417. </li>
  418. </ul>
  419. </div>
  420. </div>
  421. <div class="sect2">
  422. <h3 id="clean-build-and-run-cycle"><a class="anchor" href="#clean-build-and-run-cycle"></a>Clean, Build and Run Cycle</h3>
  423. <div class="imageblock text-center">
  424. <div class="content">
  425. <img src="../_images/sdk/jmonkeyplatform-docu-5.png" alt="jmonkeyplatform-docu-5.png" width="421" height="298">
  426. </div>
  427. </div>
  428. <div class="admonitionblock important">
  429. <table>
  430. <tr>
  431. <td class="icon">
  432. <i class="fa icon-important" title="Important"></i>
  433. </td>
  434. <td class="content">
  435. <div class="paragraph">
  436. <p>Pressing <strong><kbd>F6</kbd> builds &amp; runs</strong> the <em>main</em> class of the <em>main project</em>. If there are several classes, or several projects, you have to specify which one you want <kbd>F6</kbd> to run. <b class="button">RMB</b> select a project and choose <code>Set As Main Project</code>, then <b class="button">RMB</b> select the project again and choose <code><span class="menuseq"><b class="menu">Properties</b>&#160;<i class="fa fa-angle-right caret"></i> <b class="menuitem">Run</b></span></code> and choose a Main Class.</p>
  437. </div>
  438. <div class="paragraph">
  439. <p>To build and run the main() of <em>any file that is open in the editor</em>, press <kbd>Shift</kbd>+<kbd>F6</kbd>!</p>
  440. </div>
  441. </td>
  442. </tr>
  443. </table>
  444. </div>
  445. <div class="ulist">
  446. <ul>
  447. <li>
  448. <p><b class="button">RMB</b> select the project and use the context-menu to clean all generated classes and JARs.</p>
  449. </li>
  450. <li>
  451. <p><b class="button">RMB</b> select individual files with a main method to build and run them. (<kbd>Shift</kbd>+<kbd>F6</kbd>)</p>
  452. </li>
  453. <li>
  454. <p>Press the <b class="button">Run</b> button (green arrow in the toolbar) to build and run the project. (<kbd>F6</kbd>)</p>
  455. </li>
  456. </ul>
  457. </div>
  458. <div class="paragraph">
  459. <p><strong>More than one project open?</strong> The toolbar buttons and the F-keys are bound to the main project, which is shown in bold in the Project Explorer. <b class="button">RMB</b> select a project and select <code>Set As Main Project</code> to make it respond to the toolbar buttons and F-keys.</p>
  460. </div>
  461. <div class="paragraph">
  462. <p><strong>Worried About Proprietary Lock-in?</strong> You are never locked into the jMonkeyEngine SDK: At any time, you can change into your project directory on the command line, and clean, build, and run your project, using non-proprietary Apache Ant commands:</p>
  463. </div>
  464. <div class="listingblock">
  465. <div class="content">
  466. <pre class="highlightjs highlight"><code>ant clean; ant jar; ant run;</code></pre>
  467. </div>
  468. </div>
  469. </div>
  470. </div>
  471. </div>
  472. <div class="sect1">
  473. <h2 id="development-process"><a class="anchor" href="#development-process"></a>Development Process</h2>
  474. <div class="sectionbody">
  475. <div class="ulist">
  476. <ul>
  477. <li>
  478. <p><strong>Creating new files and packages:</strong> Select the Source Packages node (or any of its subnodes), and press <kbd>Ctrl</kbd>+<kbd>N</kbd> (<code><span class="menuseq"><b class="menu">File</b>&#160;<i class="fa fa-angle-right caret"></i> <b class="menuitem">New File</b></span></code>): Use the <code>New File</code> wizard to create new Java classes, Java packages, Java beans, Swing forms, JUnit files, j3m Materials, j3o scenes, j3f filters, and many more.</p>
  479. </li>
  480. <li>
  481. <p><strong>Editing files:</strong> Open the Projects Explorer and double-click a Java file from the Source Packages to open it in the Editor. The <a href="code_editor.html" class="page">jMonkeyEngine SDK Code Editor</a> assists you in many ways, including syntactic and semantic code coloring, code completion, and javadoc.</p>
  482. </li>
  483. <li>
  484. <p><strong>Adding Assets:</strong></p>
  485. <div class="ulist">
  486. <ul>
  487. <li>
  488. <p>You can <a href="model_loader_and_viewer.html" class="page">import models, scenes, and materials</a> as assets into your project.</p>
  489. </li>
  490. <li>
  491. <p>To add sound files and images, use your operating system&#8217;s file explorer and copy the files into your project&#8217;s asset directory.</p>
  492. </li>
  493. </ul>
  494. </div>
  495. </li>
  496. <li>
  497. <p><strong>ToDo List:</strong> The tasks window automatically lists all lines containing errors and warnings, and all lines that you have marked with the comment keywords</p>
  498. <div class="listingblock">
  499. <div class="content">
  500. <pre class="highlightjs highlight"><code class="language-html hljs" data-lang="html">FIXME</code></pre>
  501. </div>
  502. </div>
  503. <div class="paragraph">
  504. <p>, @todo, or TODO.</p>
  505. </div>
  506. </li>
  507. <li>
  508. <p><strong>Integrated tools:</strong> <a href="debugging_profiling_testing.html" class="page">Debugging, Testing, Profiling</a>.</p>
  509. </li>
  510. </ul>
  511. </div>
  512. <div class="sect2">
  513. <h3 id="adding-external-jar-libraries"><a class="anchor" href="#adding-external-jar-libraries"></a>Adding external jar libraries</h3>
  514. <div class="paragraph">
  515. <p>You may want to use external Java libraries in your jME project, for example content generators or artificial intelligence implementations.</p>
  516. </div>
  517. <div class="paragraph">
  518. <p>Add the library to the global library list:</p>
  519. </div>
  520. <div class="ulist">
  521. <ul>
  522. <li>
  523. <p>Select <span class="menuseq"><b class="menu">Tools</b>&#160;<i class="fa fa-angle-right caret"></i> <b class="menuitem">Libraries</b></span> in the main menu.</p>
  524. </li>
  525. <li>
  526. <p>Click &#8220;New Library&#8221;, enter a name for the library, and press <b class="button">OK</b>.</p>
  527. </li>
  528. <li>
  529. <p>In the &#8220;Classpath&#8221; tab, press &#8220;Add JAR/Folder&#8221; and select the jar file(s) needed for the library.</p>
  530. </li>
  531. <li>
  532. <p>(Optional) In the &#8220;JavaDoc&#8221; tab, press &#8220;Add ZIP/Folder&#8221; and select the javadoc for the library, as zip file or folder.</p>
  533. </li>
  534. <li>
  535. <p>(Optional) In the &#8220;Sources&#8221; tab you can select a folder or jar file containing the source files of the library.</p>
  536. </li>
  537. <li>
  538. <p>Press <b class="button">OK</b>.</p>
  539. </li>
  540. </ul>
  541. </div>
  542. <div class="paragraph">
  543. <p>Add the library to a project:</p>
  544. </div>
  545. <div class="ulist">
  546. <ul>
  547. <li>
  548. <p><b class="button">RMB</b> select your project and select &#8220;Properties&#8221;.</p>
  549. </li>
  550. <li>
  551. <p>Select &#8220;Libaries&#8221; on the left and then press &#8220;Add Library&#8221;.</p>
  552. </li>
  553. <li>
  554. <p>Select the library from the list and press <b class="button">OK</b>.</p>
  555. </li>
  556. </ul>
  557. </div>
  558. <div class="paragraph">
  559. <p>That&#8217;s it, your project can now use the external library. If you also linked the javadoc and sources, the SDK will assist you with javadoc popups, code completion (<kbd>Ctrl</kbd>+<kbd>Space</kbd>) and source navigation (<kbd>Ctrl</kbd>+<b class="button">LMB</b> ).</p>
  560. </div>
  561. </div>
  562. <div class="sect2">
  563. <h3 id="application-deployment"><a class="anchor" href="#application-deployment"></a>Application Deployment</h3>
  564. <div class="ulist">
  565. <ul>
  566. <li>
  567. <p>You can <a href="application_deployment.html" class="page">deploy</a> your game as desktop application (JAR), browser applet, WebStart (JNLP), or on the Android platform.</p>
  568. </li>
  569. </ul>
  570. </div>
  571. </div>
  572. </div>
  573. </div>
  574. <div class="sect1">
  575. <h2 id="running-sample-projects"><a class="anchor" href="#running-sample-projects"></a>Running Sample Projects</h2>
  576. <div class="sectionbody">
  577. <div class="paragraph">
  578. <p>The SDK contains <a href="sample_code.html" class="page">Sample Code</a> (read more).</p>
  579. </div>
  580. <div class="paragraph">
  581. <p>Open the Source Packages node of the JmeTests project.</p>
  582. </div>
  583. <div class="ulist">
  584. <ul>
  585. <li>
  586. <p><b class="button">RMB</b> select the <code>JME3Tests</code> project and choose Run.<br>
  587. Choose samples from the TestChooser and try out the included demos.</p>
  588. </li>
  589. <li>
  590. <p>Browse a demo&#8217;s source code in the SDK&#8217;s Project window to learn how a feature is implemented and used.</p>
  591. </li>
  592. <li>
  593. <p>Feel free to modify the code samples and experiment! If you break something, you can always recreate the packaged samples from the <code>JME3 Tests</code> template.</p>
  594. </li>
  595. </ul>
  596. </div>
  597. </div>
  598. </div>
  599. </article>
  600. <aside class="toc sidebar" data-title="Contents" data-levels="2">
  601. <div class="toc-menu"></div>
  602. </aside>
  603. </div>
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  605. </div>
  606. <footer class="footer">
  607. <p>Copyright 2020 jMonkeyEngine Wiki Contributors. Licensed BSD-3.</p>
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