Add command /coop and /tpall

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

@@ -0,0 +1,36 @@
+package emu.grasscutter.command.commands;
+
+import emu.grasscutter.command.Command;
+import emu.grasscutter.command.CommandHandler;
+import emu.grasscutter.game.player.Player;
+
+import java.util.List;
+
+@Command(label = "coop", usage = "coop",
+        description = "Forces someone to join the world of others", permission = "server.coop")
+public class CoopCommand implements CommandHandler {
+    @Override
+    public void execute(Player sender, List<String> args) {
+        if (args.size() < 2) {
+            CommandHandler.sendMessage(sender, "Usage: coop <playerId> <target playerId>");
+            return;
+        }
+        try {
+            int tid = Integer.parseInt(args.get(0));
+            int hostId = Integer.parseInt(args.get(1));
+            Player host = sender.getServer().getPlayerByUid(hostId);
+            Player want = sender.getServer().getPlayerByUid(tid);
+            if (host == null || want == null) {
+                CommandHandler.sendMessage(sender, "Player is offline.");
+                return;
+            }
+            if (want.isInMultiplayer()) {
+                sender.getServer().getMultiplayerManager().leaveCoop(want);
+            }
+            sender.getServer().getMultiplayerManager().applyEnterMp(want, hostId);
+            sender.getServer().getMultiplayerManager().applyEnterMpReply(host, tid, true);
+        } catch (Exception e) {
+            CommandHandler.sendMessage(sender, "Player id is not valid.");
+        }
+    }
+}