Add `PlayerTeleportEvent`

src/main/java/emu/grasscutter/command/commands/TeleportAllCommand.java

@@ -4,6 +4,7 @@ import emu.grasscutter.Grasscutter;
 import emu.grasscutter.command.Command;
 import emu.grasscutter.command.CommandHandler;
 import emu.grasscutter.game.player.Player;
+import emu.grasscutter.server.event.player.PlayerTeleportEvent;
 import emu.grasscutter.utils.Position;
 
 import java.util.List;
@@ -23,9 +24,14 @@ public final class TeleportAllCommand implements CommandHandler {
         for (Player player : targetPlayer.getWorld().getPlayers()) {
             if (player.equals(targetPlayer))
                 continue;
+
             Position pos = targetPlayer.getPos();
+            PlayerTeleportEvent event = new PlayerTeleportEvent(targetPlayer, PlayerTeleportEvent.TeleportType.COMMAND,
+                targetPlayer.getPos(), pos);
+            event.call();
 
-            player.getWorld().transferPlayerToScene(player, targetPlayer.getSceneId(), pos);
+            if(!event.isCanceled())
+                player.getWorld().transferPlayerToScene(player, targetPlayer.getSceneId(), event.getDestination());
         }
 
         CommandHandler.sendMessage(sender, translate(sender, "commands.teleportAll.success"));

src/main/java/emu/grasscutter/command/commands/TeleportCommand.java

@@ -4,6 +4,7 @@ import emu.grasscutter.Grasscutter;
 import emu.grasscutter.command.Command;
 import emu.grasscutter.command.CommandHandler;
 import emu.grasscutter.game.player.Player;
+import emu.grasscutter.server.event.player.PlayerTeleportEvent;
 import emu.grasscutter.utils.Position;
 
 import java.util.List;
@@ -54,7 +55,11 @@ public final class TeleportCommand implements CommandHandler {
         }
 
         Position target_pos = new Position(x, y, z);
-        boolean result = targetPlayer.getWorld().transferPlayerToScene(targetPlayer, sceneId, target_pos);
+        PlayerTeleportEvent event = new PlayerTeleportEvent(targetPlayer, PlayerTeleportEvent.TeleportType.COMMAND,
+            targetPlayer.getPos(), target_pos);
+        event.call();
+
+        boolean result = !event.isCanceled() || targetPlayer.getWorld().transferPlayerToScene(targetPlayer, sceneId, event.getDestination());
         if (!result) {
             CommandHandler.sendMessage(sender, translate(sender, "commands.teleport.exists_error"));
         } else {

src/main/java/emu/grasscutter/game/managers/mapmark/MapMarksManager.java

@@ -4,6 +4,7 @@ import emu.grasscutter.game.player.Player;
 import emu.grasscutter.net.proto.MapMarkPointTypeOuterClass.MapMarkPointType;
 import emu.grasscutter.net.proto.MarkMapReqOuterClass.MarkMapReq;
 import emu.grasscutter.net.proto.MarkMapReqOuterClass.MarkMapReq.Operation;
+import emu.grasscutter.server.event.player.PlayerTeleportEvent;
 import emu.grasscutter.server.packet.send.PacketMarkMapRsp;
 import emu.grasscutter.server.packet.send.PacketSceneEntityAppearNotify;
 import emu.grasscutter.utils.Position;
@@ -74,17 +75,21 @@ public class MapMarksManager {
     }
 
     private void teleport(Player player, MapMark mapMark) {
-        float y;
-        try {
+        float y; try {
             y = (float)Integer.parseInt(mapMark.getName());
         } catch (Exception e) {
             y = 300;
         }
+
         Position pos = mapMark.getPosition();
-        player.getPos().set(pos.getX(), y, pos.getZ());
+        PlayerTeleportEvent event = new PlayerTeleportEvent(player, PlayerTeleportEvent.TeleportType.MAP,
+            player.getPos(), new Position(pos.getX(), y, pos.getZ()));
+
+        event.call(); if(event.isCanceled()) return;
+        player.getPos().set(event.getDestination());
+
         if (mapMark.getSceneId() != player.getSceneId()) {
             player.getWorld().transferPlayerToScene(player, mapMark.getSceneId(), player.getPos());
-        }
-        player.getScene().broadcastPacket(new PacketSceneEntityAppearNotify(player));
+        } player.getScene().broadcastPacket(new PacketSceneEntityAppearNotify(player));
     }
 }

src/main/java/emu/grasscutter/server/event/player/PlayerTeleportEvent.java

+package emu.grasscutter.server.event.player;
+
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.server.event.Cancellable;
+import emu.grasscutter.server.event.types.PlayerEvent;
+import emu.grasscutter.utils.Position;
+
+public final class PlayerTeleportEvent extends PlayerEvent implements Cancellable {
+    private final TeleportType type;
+    private final Position from;
+    private Position to;
+
+    public PlayerTeleportEvent(Player player, TeleportType type, Position from, Position to) {
+        super(player);
+
+        this.type = type;
+        this.from = from;
+        this.to = to;
+    }
+
+    public TeleportType getTeleportType() {
+        return this.type;
+    }
+
+    public Position getSource() {
+        return this.from;
+    }
+
+    public Position getDestination() {
+        return this.to;
+    }
+
+    public void setDestination(Position to) {
+        this.to = to;
+    }
+
+    public enum TeleportType {
+        /**
+         * The player has asked to teleport to a waypoint.
+         */
+        WAYPOINT,
+
+        /**
+         * The player has asked to teleport using the map.
+         */
+        MAP,
+
+        /**
+         * The player has asked to teleport using the command.
+         */
+        COMMAND
+    }
+}
\ No newline at end of file

src/main/java/emu/grasscutter/server/packet/recv/HandlerSceneTransToPointReq.java

@@ -7,6 +7,7 @@ import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.SceneTransToPointReqOuterClass.SceneTransToPointReq;
 import emu.grasscutter.net.proto.SceneTransToPointRspOuterClass.SceneTransToPointRsp;
 import emu.grasscutter.net.packet.PacketHandler;
+import emu.grasscutter.server.event.player.PlayerTeleportEvent;
 import emu.grasscutter.server.game.GameSession;
 import emu.grasscutter.server.packet.send.PacketSceneTransToPointRsp;
 import emu.grasscutter.utils.Position;
@@ -26,8 +27,14 @@ public class HandlerSceneTransToPointReq extends PacketHandler {
 			float y = scenePointEntry.getPointData().getTranPos().getY();
 			float z = scenePointEntry.getPointData().getTranPos().getZ();
 
+            PlayerTeleportEvent event = new PlayerTeleportEvent(session.getPlayer(), PlayerTeleportEvent.TeleportType.WAYPOINT,
+                session.getPlayer().getPos(), new Position(x, y, z));
+            event.call();
+
+			if(!event.isCanceled()) {
                 session.getPlayer().getWorld().transferPlayerToScene(session.getPlayer(), req.getSceneId(), new Position(x, y, z));
                 session.send(new PacketSceneTransToPointRsp(session.getPlayer(), req.getPointId(), req.getSceneId()));
+            }
 		} else {
 			session.send(new PacketSceneTransToPointRsp());
 		}

src/main/java/emu/grasscutter/server/packet/recv/HandlerTryEnterHomeReq.java

@@ -9,6 +9,7 @@ import emu.grasscutter.net.packet.PacketHandler;
 import emu.grasscutter.net.packet.PacketOpcodes;
 import emu.grasscutter.net.proto.TryEnterHomeReqOuterClass;
 import emu.grasscutter.scripts.data.SceneConfig;
+import emu.grasscutter.server.event.player.PlayerTeleportEvent;
 import emu.grasscutter.server.game.GameSession;
 import emu.grasscutter.server.packet.send.PacketTryEnterHomeRsp;
 import emu.grasscutter.utils.Position;
@@ -38,13 +39,17 @@ public class HandlerTryEnterHomeReq extends PacketHandler {
         Scene scene = session.getPlayer().getWorld().getSceneById(realmId);
         Position pos = scene.getScriptManager().getConfig().born_pos;
 
+        PlayerTeleportEvent event = new PlayerTeleportEvent(session.getPlayer(), PlayerTeleportEvent.TeleportType.WAYPOINT,
+            session.getPlayer().getPos(), pos);
+        event.call();
+
+        if(!event.isCanceled()) {
             session.getPlayer().getWorld().transferPlayerToScene(
                 session.getPlayer(),
-                realmId,
-                pos
+                realmId, event.getDestination()
             );
 
-
             session.send(new PacketTryEnterHomeRsp(req.getTargetUid()));
         }
+    }
 }