PortalToInstance.cs

// a portal that teleports a player into a dungeon instance for his party
using UnityEngine;

namespace uMMORPG
{
    [RequireComponent(typeof(Collider))]
    public class PortalToInstance : MonoBehaviour
    {
        [Tooltip("Instance template in the Scene. Don't use a prefab, Mirror can't handle prefabs that contain NetworkIdentity children.")]
        public Instance instanceTemplate;

        void OnPortal(Player player)
        {
            // check party again, just to be sure.
            if (player.party.InParty())
            {
                // is there an instance for the player's party yet?
                if (instanceTemplate.instances.TryGetValue(player.party.party.partyId, out Instance existingInstance))
                {
                    // teleport player to instance entry
                    if (player.isServer) player.movement.Warp(existingInstance.entry.position);
                    Debug.Log("Teleporting " + player.name + " to existing instance=" + existingInstance.name + " with partyId=" + player.party.party.partyId);
                }
                // otherwise create a new one
                else
                {
                    Instance instance = Instance.CreateInstance(instanceTemplate, player.party.party.partyId);
                    if (instance != null)
                    {
                        // teleport player to instance entry
                        if (player.isServer) player.movement.Warp(instance.entry.position);
                        Debug.Log("Teleporting " + player.name + " to new instance=" + instance.name + " with partyId=" + player.party.party.partyId);
                    }
                    else if (player.isServer) player.chat.TargetMsgInfo("There are already too many " + instanceTemplate.name + " instances. Please try again later.");
                }
            }
        }

        void OnTriggerEnter(Collider co)
        {
            if (instanceTemplate != null)
            {
                // a player might have a root collider and a hip collider.
                // only fire Portal OnTriggerEnter code here ONCE.
                // => only for the collider ON the player
                // => so we check GetComponent. DO NOT check GetComponentInParent.
                Player player = co.GetComponent<Player>();
                if (player != null)
                {
                    // only call this for server and for local player. not for other
                    // players on the client. no need in locally creating their
                    // instances too.
                    if (player.isServer || player.isLocalPlayer)
                    {
                        // required level?
                        if (player.level.current >= instanceTemplate.requiredLevel)
                        {
                            // can only enter with a party
                            if (player.party.InParty())
                            {
                                // call OnPortal on server and on local client
                                OnPortal(player);
                            }
                            // show info message on client directly. no need to do it via Rpc.
                            else if (player.isClient)
                                player.chat.AddMsgInfo("Can't enter instance without a party.");
                        }
                        // show info message on client directly. no need to do it via Rpc.
                        else if (player.isClient)
                            player.chat.AddMsgInfo("Portal requires level " + instanceTemplate.requiredLevel);
                    }
                }
            }
        }
    }
}