Should be able to recognize Raspberry Pi and not try and load the Discord RPC (which crashes the game)

desktop/src/com/unciv/app/desktop/DesktopLauncher.kt

@@ -29,7 +29,8 @@ internal object DesktopLauncher {
         val game = UncivGame("Desktop")
 
 
-        tryActivateDiscord(game)
+        if(!RaspberryPiDetector.isRaspberryPi()) // No discord RPC for Raspberry Pi, see https://github.com/yairm210/Unciv/issues/1624
+            tryActivateDiscord(game)
 
         LwjglApplication(game, config)
     }
@@ -67,6 +68,7 @@ internal object DesktopLauncher {
     }
 
     private fun tryActivateDiscord(game: UncivGame) {
+
         try {
             val handlers = DiscordEventHandlers()
             DiscordRPC.INSTANCE.Discord_Initialize("647066573147996161", handlers, true, null)

desktop/src/com/unciv/app/desktop/RaspberryPiDetector.kt

@@ -0,0 +1,61 @@
+package com.unciv.app.desktop
+
+import java.io.BufferedReader
+import java.io.File
+import java.io.FileInputStream
+import java.io.InputStreamReader
+
+/**
+ * Raspberry PI  helper class
+ * https://stackoverflow.com/questions/37053271/the-ideal-way-to-detect-a-raspberry-pi-from-java-jar
+ * @author wf
+ */
+object RaspberryPiDetector {
+    var debug = false
+    /**
+     * check if this java vm runs on a raspberry PI
+     *
+     * @return true if this is running on a Raspbian Linux
+     */
+    fun isRaspberryPi(): Boolean {
+        val osRelease = osRelease()
+        return osRelease != null && osRelease.contains("Raspbian")
+    }
+
+    /**
+     * read the first line from the given file
+     *
+     * @param file
+     * @return the first line
+     */
+    private fun readFirstLine(file: File): String? {
+        var firstLine: String? = null
+        try {
+            if (file.canRead()) {
+                val fis = FileInputStream(file)
+                val bufferedReader = BufferedReader(
+                        InputStreamReader(fis))
+                firstLine = bufferedReader.readLine()
+                fis.close()
+            }
+        } catch (th: Throwable) {
+            if (debug) th.printStackTrace()
+        }
+        return firstLine
+    }
+
+    /**
+     * get the operating System release
+     *
+     * @return the first line from /etc/os-release or null
+     */
+    private fun osRelease(): String? {
+        val os = System.getProperty("os.name")
+        if (os.startsWith("Linux")) {
+            val osRelease = File("/etc", "os-release")
+            return readFirstLine(osRelease)
+        }
+        return null
+    }
+
+}