Replace CommandResponseEvent with ReceiveCommandFeedbackEvent

src/main/java/emu/grasscutter/command/CommandHandler.java

@@ -3,6 +3,7 @@ package emu.grasscutter.command;
 import emu.grasscutter.Grasscutter;
 import emu.grasscutter.game.player.Player;
 import emu.grasscutter.server.event.game.CommandResponseEvent;
+import emu.grasscutter.server.event.game.ReceiveCommandFeedbackEvent;
 import emu.grasscutter.server.event.types.ServerEvent;
 import static emu.grasscutter.utils.Language.translate;
 
@@ -17,13 +18,19 @@ public interface CommandHandler {
      * @param message The message to send.
      */
     static void sendMessage(Player player, String message) {
-        if (player == null) {
-            Grasscutter.getLogger().info(message);
-        } else {
-            player.dropMessage(message);
-        }
-        CommandResponseEvent event = new CommandResponseEvent(ServerEvent.Type.GAME,player, message);
+        // Call command feedback event.
+        ReceiveCommandFeedbackEvent event = new ReceiveCommandFeedbackEvent(player, message);
         event.call();
+        if (event.isCanceled()) { // If event is not cancelled, continue.
+            return;
+        }
+
+        // Send message to target.
+        if (player == null) {
+            Grasscutter.getLogger().info(event.getMessage());
+        } else {
+            player.dropMessage(event.getMessage());
+        }
     }
 
     static void sendTranslatedMessage(Player player, String messageKey, Object... args) {

src/main/java/emu/grasscutter/server/event/game/CommandResponseEvent.java

@@ -1,9 +1,12 @@
 package emu.grasscutter.server.event.game;
 
 import emu.grasscutter.game.player.Player;
-import emu.grasscutter.server.event.types.GameEvent;
 import emu.grasscutter.server.event.types.ServerEvent;
 
+/**
+ * @deprecated Will be removed in 1.2.3-dev or 1.3.0.
+ */
+@Deprecated(since = "1.2.2-dev", forRemoval = true)
 public class CommandResponseEvent extends ServerEvent {
     private String message;
     private Player player;

src/main/java/emu/grasscutter/server/event/game/ReceiveCommandFeedbackEvent.java

@@ -0,0 +1,33 @@
+package emu.grasscutter.server.event.game;
+
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.server.event.Cancellable;
+import emu.grasscutter.server.event.types.ServerEvent;
+
+import javax.annotation.Nullable;
+
+public final class ReceiveCommandFeedbackEvent extends ServerEvent implements Cancellable {
+    @Nullable
+    private final Player player;
+    private String message;
+
+    public ReceiveCommandFeedbackEvent(@Nullable Player player, String message) {
+        super(Type.GAME);
+
+        this.player = player;
+        this.message = message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public String getMessage() {
+        return this.message;
+    }
+
+    @Nullable
+    public Player getPlayer() {
+        return this.player;
+    }
+}