الصناديق تحتفظ بالباقي

using UnityEngine;

public class AmmoCrate : MonoBehaviour
{
    public int amount = 3;

    void OnTriggerEnter(Collider other)
    {
        if (other.TryGetComponent(out Blaster blaster))
        {
            blaster.AddAmmo(amount);
            Destroy(gameObject);
        }
    }
}