Merge pull request #242 from duncte123/emit-trackstart

Emit TrackStartEvent

Author: freyacodes

IMPLEMENTATION.md

@@ -199,9 +199,10 @@ Server emitted an event. See the client implementation below.
 /**
  * Implementation details:
  * The only events extending {@link lavalink.client.player.event.PlayerEvent} produced by the remote server are these:
- * 1. TrackEndEvent
- * 2. TrackExceptionEvent
- * 3. TrackStuckEvent
+ * 1. TrackStartEvent
+ * 2. TrackEndEvent
+ * 3. TrackExceptionEvent
+ * 4. TrackStuckEvent
  * <p>
  * The remaining lavaplayer events are caused by client actions, and are therefore not forwarded via WS.
  */
@@ -210,6 +211,11 @@ private void handleEvent(JSONObject json) throws IOException {
     PlayerEvent event = null;
 
     switch (json.getString("type")) {
+        case "TrackStartEvent":
+                event = new TrackStartEvent(player,
+                        LavalinkUtil.toAudioTrack(json.getString("track"))
+                );
+                break;
         case "TrackEndEvent":
             event = new TrackEndEvent(player,
                     LavalinkUtil.toAudioTrack(json.getString("track")),

LavalinkServer/src/main/java/lavalink/server/player/EventEmitter.java

@@ -47,6 +47,22 @@ public class EventEmitter extends AudioEventAdapter {
         this.linkPlayer = linkPlayer;
     }
 
+    @Override
+    public void onTrackStart(AudioPlayer player, AudioTrack track) {
+        JSONObject out = new JSONObject();
+        out.put("op", "event");
+        out.put("type", "TrackStartEvent");
+        out.put("guildId", linkPlayer.getGuildId());
+
+        try {
+            out.put("track", Util.toMessage(audioPlayerManager, track));
+        } catch (IOException e) {
+            out.put("track", JSONObject.NULL);
+        }
+
+        linkPlayer.getSocket().send(out);
+    }
+
     @Override
     public void onTrackEnd(AudioPlayer player, AudioTrack track, AudioTrackEndReason endReason) {
         JSONObject out = new JSONObject();