Add command /coop and /tpall

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

@@ -0,0 +1,31 @@
+package emu.grasscutter.command.commands;
+
+import emu.grasscutter.command.Command;
+import emu.grasscutter.command.CommandHandler;
+import emu.grasscutter.game.player.Player;
+import emu.grasscutter.utils.Position;
+
+import java.util.List;
+
+@Command(label = "tpall", usage = "tpall",
+        description = "Teleports all players in your world to your position", permission = "player.tpall")
+public class TpallCommand implements CommandHandler {
+    @Override
+    public void execute(Player sender, List<String> args) {
+        if (sender == null) {
+            CommandHandler.sendMessage(null, "Run this command in-game.");
+            return;
+        }
+        if (!sender.getWorld().isMultiplayer()) {
+            CommandHandler.sendMessage(sender, "You only can use this command in MP mode.");
+            return;
+        }
+        for (Player gp : sender.getWorld().getPlayers()) {
+            if (gp.equals(sender))
+                continue;
+            Position pos = sender.getPos();
+
+            gp.getWorld().transferPlayerToScene(gp, sender.getSceneId(), pos);
+        }
+    }
+}