ObjectPoolMaxAssert.cs

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using static Diagnostics;
 
public class ObjectPoolMaxAssert<T> : UnityEngine.Pool.IObjectPool<T> where T : class
{
    private readonly UnityEngine.Pool.ObjectPool<T> pool;
 
    public readonly int maxActive;
 
    private string exceededNumObjectsMsg;
 
    public ObjectPoolMaxAssert(System.Func<T> createFunc, int maxActive)
    {
        this.maxActive = maxActive;
        this.pool = new UnityEngine.Pool.ObjectPool<T>(createFunc);
        this.exceededNumObjectsMsg =
            $"Exceeded maximum number of objects in the pool ({typeof(T)}).";
    }
 
    public T Get()
    {
        T obj = this.pool.Get();
        Assert(this.pool.CountActive <= this.maxActive, exceededNumObjectsMsg);
        return obj;
    }
 
    public UnityEngine.Pool.PooledObject<T> Get(out T obj)
    {
        UnityEngine.Pool.PooledObject<T> pooledObj = this.pool.Get(out obj);
        Assert(this.pool.CountActive <= this.maxActive, exceededNumObjectsMsg);
        return pooledObj;
    }
 
    public void Release(T obj)
    {
        this.pool.Release(obj);
    }
 
    public void Clear()
    {
        this.pool.Clear();
    }
 
    public int CountInactive => this.pool.CountInactive;
}