PlayerPetControl.cs

using UnityEngine;
using Mirror;

namespace uMMORPG
{
    [RequireComponent(typeof(PlayerInventory))]
    [DisallowMultipleComponent]
    public class PlayerPetControl : NetworkBehaviour
    {
        [Header("Components")]
        public Player player;
        public PlayerInventory inventory;

        [Header("Pet")]
        [SyncVar, HideInInspector] public Pet activePet;

        // pet's destination should always be right next to player, not inside him
        // -> we use a helper property so we don't have to recalculate it each time
        // -> we offset the position by exactly 1 x bounds to the left because dogs
        //    are usually trained to walk on the left of the owner. looks natural.
        public Vector3 petDestination
        {
            get
            {
                Bounds bounds = player.collider.bounds;
                return transform.position - transform.right * bounds.size.x;
            }
        }

        // pet /////////////////////////////////////////////////////////////////////
        // helper function for command and UI
        public bool CanUnsummon()
        {
            // only while pet and owner aren't fighting
            return activePet != null &&
                   (   player.state == "IDLE" ||    player.state == "MOVING") &&
                   (activePet.state == "IDLE" || activePet.state == "MOVING");
        }

        [Command]
        public void CmdUnsummon()
        {
            // validate
            if (CanUnsummon())
            {
                // destroy from world. item.summoned and activePet will be null.
                NetworkServer.Destroy(activePet.gameObject);
            }
        }

        // combat //////////////////////////////////////////////////////////////////
        [Server]
        public void OnDamageDealtTo(Entity victim)
        {
            // let pet know that we attacked something
            if (activePet != null && activePet.autoAttack)
                activePet.OnAggro(victim);
        }

        [Server]
        public void OnKilledEnemy(Entity victim)
        {
            // killed a monster
            if (victim is Monster monster)
            {
                // give pet the experience without sharing it in party or similar,
                // but balance it
                // => AFTER player exp reward! pet can only ever level up to player
                //    level, so it's best if the player gets exp and level-ups
                //    first, then afterwards we try to level up the pet.
                if (activePet != null)
                {
                    activePet.experience.current += Experience.BalanceExperienceReward(monster.rewardExperience, activePet.level.current, victim.level.current);
                    // sync to owner item so the progress is saved, e.g. on level up
                    // we don't sync all the time, but here it makes sense.
                    // see also: https://github.com/vis2k/uMMORPG_CE/issues/35
                    activePet.SyncToOwnerItem();
                }
            }
        }

        // drag & drop /////////////////////////////////////////////////////////////
        void OnDragAndDrop_InventorySlot_NpcReviveSlot(int[] slotIndices)
        {
            // slotIndices[0] = slotFrom; slotIndices[1] = slotTo
            if (inventory.slots[slotIndices[0]].item.data is SummonableItem)
                UINpcRevive.singleton.itemIndex = slotIndices[0];
        }

        void OnDragAndClear_NpcReviveSlot(int slotIndex)
        {
            UINpcRevive.singleton.itemIndex = -1;
        }
    }
}