TNoodle in python app

[Radishmouse22]

I'm making a GUI app in python that is just a basic timer, I've made every bit except for the scrambler which I need TNoodle for. I just need a basic system for requesting scrambles and their SVGs and receiving them back so they can be displayed.

[gregorbg]

Hey! To get scrambles from TNoodle that are usable in another app, you need to use the core libraries located at https://github.com/thewca/tnoodle-lib. I will move the discussion there.

[gregorbg]

The TNoodle scrambling algorithms are currently implemented in Java. In order to use them from Python, you have two options:

1. Set up an API that internally runs Java, where you can do stuff like GET yourwebsite.com/scrambles/333?count=5 and it returns a JSON of 5 3x3x3 scrambles. This could be embedded to a local server, so instead you do GET localhost:8080/foo/bar without requiring Internet access. Advantage: Extremely clean implementation. Disadvantage: You'd have to maintain a Java server/infrastructure on top of Python.
2. Play around with Jython, which specifically provides Python-to-Java bridge invocations. I have no experience in that arena, but it may provide exactly what you're looking for. Advantage: Less heavy infrastructure, direct access to the TNoodle code. Disadvantage: Somewhat "hacky" (see below)

In order to make Jython work, you need all the tnoodle-lib code in one JAR. Clone this repo, open the project root folder (essentially the thing you just cloned) in a terminal and execute ./gradlew :scrambles:shadowJar (replace ./gradlew by gradlew.bat on Windows). This will yield a JAR file under scrambles/build/distributions that you can point Jython to.

No matter which option you choose, you will need to make yourself familiar with the basic Java infrastructure of how to generate a scramble. https://github.com/thewca/tnoodle-samples and specifically the java-mvp folder in there is a great place to get started.

Hope this helps!

• Gregor

[gregorbg]

The answer lies in the error message: Make sure Gradle is running on a JDK, not JRE.

It seems that you have installed the JRE, not the JDK.

• JRE = Java Runtime Environment. Execute programs built by other people
• JDK = Java Development Kit. Same as JRE plus the functionality to compile programs yourself.

You need the latter in order to build the project with Gradle. Please make sure you have JDK installed and report back if the error persists

[gregorbg]

This looks like something may be wrong with the Java version. I will update the embedded Gradle runtime, hopefully this fixes the issue. Hang in there!

[gregorbg]

Pull the latest changes and try again please :)

[Radishmouse22]

[gregorbg]

This is an error related to Java, not Kotlin.
Which Java version are you using?

I cannot reproduce this error on my machine. As a hotfix, you can try editing buildSrc/src/main/kotlin/configurations/Languages.kt and replace sourceCompatibility = JavaVersion.VERSION_1_6 with VERSION_1_8 instead.

[Radishmouse22]

Ive done a bit more research and everything works now, Thanks for your excellent support!

[campos20]

Please, consider sharing your code with us. We have a sample repository and we could use some python examples as well, if it's open source.