Hacker News Reader

Comment by t0ps0il | Hacker News Reader

`java -XstartOnFirstThread -jar setris-desktop-1.0-SNAPSHOT-jar-with-dependencies.jar`

I had to add the start on first thread flag to prevent errors and start a launch. I do get stuck after `Starting UI Subsystem` gets logged but I havent put any real effort into trying to debug that yet.

View on HN

I get this when run with homebrew's openjdk (which is JDK 20, I think):

  mikaeleiman@iMac ~/D/Setris-1.2_LINUX> java -XstartOnFirstThread -jar setris-desktop-1.0-SNAPSHOT-jar-with-dependencies.jar
  [LWJGL] [ThreadLocalUtil] Unsupported JNI version detected, this may result in a crash. Please inform LWJGL developers.
  [30.05.23][11:52:12] Loading Assets
  [30.05.23][11:52:12] Done.
  [30.05.23][11:52:12] Starting UI Subsystem
  [30.05.23][11:52:12] Done.
  [30.05.23][11:52:12]   0 FPS |    260MB RAM |    8 Threads | Render: 13ms
  mikaeleiman@iMac ~/D/Setris-1.2_LINUX>

A window is opened, looks like the title screen with the text "press A". But nothing happens when I press keys, A or others.

Maybe related to the LWJGL warning?

I know little of how Java works, and especially how to override libs, but I did try downloading lwjgl's latest release and put all its jars in the classpath:

  CLASSPATH=(string join ':' (find . | grep jar | grep lwjgl)) java  -XstartOnFirstThread -Xmx4G -jar setris-desktop-1.0-SNAPSHOT-jar-with-dependencies.jar

(fish instead of bash; the "string join" part takes all the jar paths and joins them on a single line with colon separators)

Same output and behavior, though.

Also tried with an older JDK (version 17), but that fails to even open a window.

Reply on news.ycombinator.com