Navigate to the directory /opt/retropie/configs and press Ctrl-D to create a new directory. All of this is going to be done from WinSCP. Now that we have everything that's necessary to run Flash and Java, let's now add a secton or two to Emulation Station for us to launch games. To install X, simply run the command sudo apt-get install xinit. For our case, both Gnash and Java require X to draw their graphics to the screen, so initalizing it is necessary. What is X, you may ask? You don't really need to know a whole lot about X for this, but as Wikipedia explains, it's essentially a GUI framework that's been in use on Unix systems for decades. Step Two: No Power Greater than XĪs the title of this step might indicate, we're now going to initialize X to run these two programs. I'd recommend double-checking your files to ensure you can fit everything. While we're here, I might as well mention that both Java and Flash games can take up quite a bit of space, especially ones made after 2007 or so. To install the Oracle Java 8 runtime (which is used for Java games), run sudo apt-get install oracle-java8-jdk.īoth of these will take a little bit to install, so now would be a great time to drop your games onto your Pi. To install Gnash (which is used for Flash games), run sudo apt-get install gnash. Run the command sudo apt-get update, to ensure that both Gnash and OpenJDK8 are available for installing. You'll be brought to a command line, which is where we can install programs from. Start up your Pi and wait until EmulationStation appears, then close it either through the menu or by pressing F4 on your keyboard. For Flash games we will install a program called Gnash, and for Java games we will install the Oracle Java 8 runtime. To run Java and Flash games, you're going to need two seperate programs to run them. Always backup your Pi's microSD card before attempting any kind of experimental installation. Neither the RetroPie team nor myself are responsible if you end up damaging your Pi or microSD card from trying to follow these steps. Keep in mind that none of this is officially supported (at least as of May 7th, 2018) by the RetroPie team. Basic knowledge of how to edit an XML file.Basic knowledge of how to use a command line.A USB keyboard (I'd recommend one with a built-in trackpad).A terminal program (I'd recommend WinSCP).A Raspberry Pi 3 running Retropie (preferrably with at least a gigabyte or two of free space).If you need a more precise expectation, scroll down to the Compatibility List at the bottom of this post. Of course, considering the specs on the Pi 3 and the poor performance of Java and Flash games in general, it's to be expected. Some games run at very much playable speed, others struggle at sub-1FPS speeds. It varies quite a lot depending on the games you want to play, when they were made, how optimized the code is, etc. Neither Gnash nor Java support gamepads natively, but hypothetically it could be possible to run joy2key and solve this issue. I'd imagine someone could create a script to be added to the Experimental section of RetroPie-Setup. I hope that writing this guide will help solve that problem. There's been a few threads about running Flash and Java games on this forum already, but most of them are outdated by a rather sizable amount of time, as well as being fairly vague in terms of how to run these types of games for yourself. Before we begin, let's just run through some questions. Yep, you read the title right! In this guide, I'm going to explain how to run both Java games and Flash games on a Raspberry Pi 3 running RetroPie.
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