Added status ping.

Author: NoMathExpectation

src/main/kotlin/NoMathExpectation/chatExchange/neoForged/ExchangeEvents.kt

@@ -63,4 +63,18 @@ data class PlayerDieEvent(
 data class PlayerAdvancementEvent(
     val name: String,
     val advancement: String,
+) : ExchangeEvent
+
+@Serializable
+@SerialName("status_ping")
+data object StatusPingEvent : ExchangeEvent
+
+@Serializable
+@SerialName("status")
+data class StatusEvent(
+    val version: String,
+    val brand: String,
+    val playerNumber: Int,
+    val maxPlayerNumber: Int,
+    val playerNames: List<String>,
 ) : ExchangeEvent

src/main/kotlin/NoMathExpectation/chatExchange/neoForged/ExchangeServer.kt

@@ -96,6 +96,12 @@ class ExchangeServer(
             kotlin.runCatching {
                 val event = channel.readExchangeEvent()
                 logger.info("Received event: $event")
+
+                if (event is StatusPingEvent) {
+                    sendEvent(buildStatusEvent())
+                    return@runCatching
+                }
+
                 if (event !is MessageEvent) {
                     return@runCatching
                 }
@@ -146,6 +152,17 @@ class ExchangeServer(
 
     fun componentToString(component: Component) = component.getStringWithLanguage(language)
 
+    private fun buildStatusEvent(): StatusEvent {
+        val players = minecraftServer.playerList
+        return StatusEvent(
+            version = minecraftServer.serverVersion,
+            brand = minecraftServer.serverModName,
+            playerNumber = players.playerCount,
+            maxPlayerNumber = players.maxPlayers,
+            playerNames = players.playerNamesArray.filterNotNull(),
+        )
+    }
+
     fun launch() {
         if (launched) {
             error("Server is already launched!")