Allow disabling cross-server broadcasting per-channel (#589)

* Add channel config option to individually disable cross-server

* Block incoming messages when channel cross-server is false

Author: Draycia

api/src/main/java/net/draycia/carbon/api/channels/ChatChannel.java

@@ -132,4 +132,12 @@ public interface ChatChannel extends Keyed, ChatComponentRenderer {
      */
     long startCooldown(CarbonPlayer player);
 
+    /**
+     * Whether messages from this channel should be broadcast and sent to other servers.
+     *
+     * @return if this channel's messages should be sent cross-server
+     * @since 3.0.0
+     */
+    boolean shouldCrossServer();
+
 }

common/src/main/java/net/draycia/carbon/common/channels/ConfigChatChannel.java

@@ -117,6 +117,9 @@ public class ConfigChatChannel implements ChatChannel {
 
     private long cooldown = -1;
 
+    @Comment("Whether this channel's messages should be sent cross-server.")
+    private boolean crossServer = true;
+
     @Override
     public @Nullable String quickPrefix() {
         if (this.quickPrefix == null || this.quickPrefix.isBlank()) {
@@ -263,6 +266,11 @@ public boolean emptyRadiusRecipientsMessage() {
         return this.emptyRadiusRecipientsMessage;
     }
 
+    @Override
+    public boolean shouldCrossServer() {
+        return this.crossServer;
+    }
+
     @Override
     public boolean equals(final Object other) {
         if (!(other instanceof ConfigChatChannel otherChannel)) {

common/src/main/java/net/draycia/carbon/common/listeners/MessagePacketHandler.java

@@ -51,6 +51,10 @@ public MessagePacketHandler(
                 return;
             }
 
+            if (!event.chatChannel().shouldCrossServer()) {
+                return;
+            }
+
             messaging.get().queuePacket(() -> {
                 final CarbonPlayer sender = event.sender();
                 final Component networkMessage = e.renderFor(sender);

common/src/main/java/net/draycia/carbon/common/messaging/CarbonChatPacketHandler.java

@@ -122,6 +122,10 @@ private boolean handleMessagePacket(final ChatMessagePacket messagePacket) {
             return false;
         }
 
+        if (!channel.shouldCrossServer()) {
+            return false;
+        }
+
         final List<KeyedRenderer> renderers = new ArrayList<>();
 
         final List<Audience> recipients = channel.recipients(sender);

paper/src/main/java/net/draycia/carbon/paper/integration/fuuid/AbstractFactionsChannel.java

@@ -63,4 +63,9 @@ protected final boolean hasRelations(final CarbonPlayer player, final Relation r
         return faction != null && faction.getRelationCount(relation) > 0;
     }
 
+    @Override
+    public boolean shouldCrossServer() {
+        return false;
+    }
+
 }

paper/src/main/java/net/draycia/carbon/paper/integration/mcmmo/McmmoPartyChannel.java

@@ -101,4 +101,9 @@ public List<Audience> recipients(final CarbonPlayer sender) {
         return PartyManager.getParty(Bukkit.getPlayer(player.uuid()));
     }
 
+    @Override
+    public boolean shouldCrossServer() {
+        return false;
+    }
+
 }

paper/src/main/java/net/draycia/carbon/paper/integration/towny/ResidentListChannel.java

@@ -91,4 +91,9 @@ protected List<Player> onlinePlayers(final T residentList) {
 
     protected abstract Component cannotUseChannel(CarbonPlayer player);
 
+    @Override
+    public boolean shouldCrossServer() {
+        return false;
+    }
+
 }