Northbound/Assets/Scripts/PlayerInventory.cs

using Unity.Netcode;
using UnityEngine;

namespace Northbound
{
    public class PlayerInventory : NetworkBehaviour
    {
        [Header("Inventory Settings")]
        public int maxResourceCapacity = 100;

        private NetworkVariable<int> resourceCount = new NetworkVariable<int>(
            0,
            NetworkVariableReadPermission.Everyone,
            NetworkVariableWritePermission.Owner
        );

        public int CurrentResourceAmount => resourceCount.Value;
        public int MaxResourceCapacity => maxResourceCapacity;

        public bool CanAddResource(int amount)
        {
            return resourceCount.Value + amount <= maxResourceCapacity;
        }

        public int GetAvailableSpace()
        {
            return maxResourceCapacity - resourceCount.Value;
        }

        public void AddResources(int amount)
        {
            if (amount <= 0) return;

            int actualAmount = Mathf.Min(amount, maxResourceCapacity - resourceCount.Value);
            resourceCount.Value += actualAmount;

            Debug.Log($"Player {OwnerClientId} added resources: +{actualAmount}, total: {resourceCount.Value}/{maxResourceCapacity}");
        }

        public void RemoveResources(int amount)
        {
            if (amount <= 0) return;

            int actualAmount = Mathf.Min(amount, resourceCount.Value);
            resourceCount.Value -= actualAmount;

            Debug.Log($"Player {OwnerClientId} used resources: -{actualAmount}, total: {resourceCount.Value}/{maxResourceCapacity}");
        }

        public void SetResources(int amount)
        {
            resourceCount.Value = Mathf.Clamp(amount, 0, maxResourceCapacity);
        }

        [Rpc(SendTo.Owner)]
        public void AddResourcesRpc(int amount)
        {
            AddResources(amount);
        }

        [Rpc(SendTo.Owner)]
        public void RemoveResourcesRpc(int amount)
        {
            RemoveResources(amount);
        }

        [Rpc(SendTo.Owner)]
        public void SetResourcesRpc(int amount)
        {
            SetResources(amount);
        }
    }
}