Stendhal on Eclipse: Difference between revisions

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This guide describes how to setup a development environment in Eclipse for Stendhal.
This guide describes how to setup a development environment in Eclipse for Stendhal.


== Get Java ==

* If you can play Stendhal, you already have Java and can skip this step.
* If you do not have java installed, please download it https://java.com<br> (if you are on Linux, use your packet manager)

== Get Node.js ==

* https://nodejs.org (optional: for building & using web client)


== Get Eclipse==
== Get Eclipse==
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* Go to https://www.eclipse.org/downloads/
* Go to https://www.eclipse.org/downloads/
* Download: "Eclipse IDE for Java Developers"
* Download: "Eclipse IDE for Java Developers"
* Unzip the download an run Eclipse
* Unzip the download and run Eclipse
* In Eclipse, close the "Welcome" window
* In Eclipse, close the "Welcome" window


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File:Eclipse_00a.png|Typical window layout with the Package Explorer on the left hand side and an empty area for editors in the middle
File:Eclipse_00a.png|Typical window layout with the Package Explorer on the left hand side and an empty area for editors in the middle
</gallery>
</gallery>
Note: If you installed Eclipse in Ubuntu via a package manager, also install: "eclipse-egit"


== New Project from Git ==
== New Project from Git ==
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* In the dialog select: "Git -> Projects from Git" and click "Next".
* In the dialog select: "Git -> Projects from Git" and click "Next".
* Select "Clone URI" and click "Next".
* Select "Clone URI" and click "Next".
* Fill in the following information:<br>URI: <code><nowiki>git://git.code.sf.net/p/arianne/stendhal</nowiki></code>
* Fill in the following information:
** '''URI''':
*** GitHub readonly: <code><nowiki>https://github.com/arianne/stendhal.git</nowiki></code><br>(if you have a github account, please go to https://github.com/arianne/stendhal and click on "Fork" to create you own copy of the repository and then use that in Eclipse instead)
*** GitHub read/write (SSH): <code><nowiki>git@github.com:arianne/stendhal.git</nowiki></code>
* The result of the fields are filled in automatically, click "Next"
* The result of the fields are filled in automatically, click "Next"
* On the Branch selection page, keep everything selected and click "Next"
* On the Branch selection page, keep everything selected and click "Next"
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* Eclipse will now download Stendhal from git, this may take a while
* Eclipse will now download Stendhal from git, this may take a while
* "Import existing projects" and select "Next"
* "Import existing projects" and select "Next"
* "Finish" import of project Stendhal

Click on the screenshots to enlarge them, if you need help with any of the steps:


<gallery>
<gallery>
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Eclipse 04.png|Fill in URI and watch the remaining fields to be filled automatically
Eclipse 04.png|Fill in URI and watch the remaining fields to be filled automatically
Eclipse 05.png|Just click "next" on branch selection
Eclipse 05.png|Just click "next" on branch selection
Eclipse 06.png|Just click "next" on destionation
Eclipse 06.png|Just click "next" on destination
Eclipse 07.png|Wait for the download to complete. This may take quite a while
Eclipse 07.png|Wait for the download to complete. This may take quite a while
Eclipse 08.png|Import existing project
Eclipse 09.png|Confirm import of project "Stendhal" by clicking finish
</gallery>
</gallery>


==Trouble Shooting==
== Configure Project ==


After completing the import wizard, Eclipse should look like the following screenshot:
<ol>
<li>In the New Project wizard select Java -> Java Project (do not select a simple "general" project!) and click "Next".</li>
<li>Project name: stendhal ( or whatever you like to call it ).
<li>Under the section named "JRE" make sure a Java version 1.5 or higher is selected and click "Finish".</li>
<li>Right click on your project folder and select "Properties" in the context menu.</li>
<li>Then select "Java Build Path" on the left side of the dialog box.</li>
<li>Now remove all existing folders from source path and add the two source folders 'src' and 'tests' by clicking on the "Add Folder..." button</li>


[[File:Eclipse 10.png]]
<pre>
source folder #1:
stendhal/src
Included:(All)
Excluded:(None)
Native library location: (None)


There is a project called "stendhal" listed in the Package Explorer view. There may be a tiny yellow triangle in front of the blue project icon. But if you see a red circle or a red exclamation mark, something went wrong. In this case there will be an error in the "Problems" view at the bottom.
source folder #2:
stendhal/tests
Included:(All)
Excluded:(None)
Native library location: (None)


default output folder: stendhal/bin


== Start StendhalServer ==
</pre>


<i><span style="color:red;">NOTE:</span> For newer versions of eclipse an asterix (*) may need to be added manually to "Included". If the project is already checked out just right-click "src" & "tests" in the Package Explorer panel & select <span style="color:blue;">Build Path > Configure Inclusion / Exclusion Filters...</span> Under "Inclusion patterns" select "Add" then input "*" and select "OK" then "Finish". Updated screenshots to be added.</i>

<li> On the "Libraries" tab: click on the "Add JARs" button and select all the *.jar-files in stendhal/libs (some versions of eclipse may automatically import the .jar files).</li>
<i><span style="color:red;">NOTE:</span> If project checkout did not complete before the Create New Project Wizard starts you may have to add the .jar files later. To get to the project properties page either select "Project" from the menu bar then select "Properties" or right-click the root folder in the Package Explorer panel then select "Properties" from the drop-down menu. Updated screenshots to be added.</i>
<li> Check the text encoding at Project -> Properties -> Resource -> Text Encoding. Set it to UTF-8 unless it is that already.</li>
</ol>
Eclipse should be able to compile the source code now. There could be a little yellow sign (signalling warning messages) before your project folder but there must not be red X (error messages). The package explorer should now display the "src" folder below the root folder with a different icon, the icon is like a small grid.

==Trouble Shooting==
menu Windows | Preferences | Java | Installed JREs
* there should be at least one entry with a valid JAVA_HOME path (make it so so JDK compliance is at least Java 7)

==To make it run the server in Debug mode==
* In the toolbar there is the "Debug" button, which looks like a little, green bug. There is a little black arrow on the right side of it.
* In the toolbar there is the "Debug" button, which looks like a little, green bug. There is a little black arrow on the right side of it.
[[File:Eclipse_debug_configurations_menu.png]]
[[File:Eclipse_debug_configurations_menu.png]]
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[[File:Eclipse_new_debug_configuration.png]]
[[File:Eclipse_new_debug_configuration.png]]


<pre> Name: StendhalServer
Name: StendhalServer
Main class: games.stendhal.server.StendhalServer
Main class: games.stendhal.server.StendhalServer


* All other settings ("include system libries", "Stop in main", ... can be left at their default value.
* All other settings ("include system libries", "Stop in main", ... can be left at their default value.
* on the [Arguments] tab: VM arguments: -Xmx128M
* on the [Classpath] tab: click "UserEntries" - button "Advanced" - (*) add folder | OK - and select the "stendhal" project root folder | OK
* button [Debug]


And then the server should be started.
on the [Arguments] tab:
VM arguments: -Xmx128M


on the [Classpath] tab:
NOTE: On newer Eclipse versions, the [Classpath Entries] are under Dependencies tab.
click UserEntries
button "Advanced"
(*) add folder | OK
and select the project root folder | OK
</pre>

* button [Debug]
And then the server should be started.


==To make the client run==
== Start Stendhal Client ==
# Open games.stendhal.client.update.Starter.java in the editor
# Open games.stendhal.client.update.Starter.java in the editor
# Then again the small black arrow on the right side of the green bug. (Or you may also choose to use the "Run" command instead of "Debug" in case you only want to debug the server component.)
# Then again the small black arrow on the right side of the green bug.
# Select "Debug Configurations" (or "Run Configurations...").
# Select "Debug Configurations" (or "Run Configurations...").
# Select Java Application and click the "New" button in upper-left corner.
# Select Java Application and click the "New" button in upper-left corner.
# On the [Classpath] tab select "User Entries" - button "Advanced" - (*) add folder | OK - and select the project root folder. | OK
# On the [Classpath] tab select "User Entries" - button "Advanced" - (*) add folder | OK - and select the project root folder. | OK

yay shiny new client, shiny server


== Making patches ==
== Making patches ==
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==Running JUnit Tests in Eclipse==
==Running JUnit Tests in Eclipse==

This is an advanced topic. If you make changes to the Java code, it is a good idea to run the automatic test.

Setting up JUnit tests in Eclipse:
Setting up JUnit tests in Eclipse:
# Click the arrow next to either the green "Run" or "Debug" button.
# Click the arrow next to either the green "Run" or "Debug" button.