NavQueryBuffer.GetHashCode

Returns

int A hash code derived from the buffer's internal allocation identifier.

Description

Computes a hash code for identifying this NavQueryBuffer in hash-based collections.

The returned value is suitable for storing the NavQueryBuffer in hash-based collections such as Dictionary or HashSet. Two NavQueryBuffer values that compare equal through NavQueryBuffer.Equals also produce the same hash code.

using System.Collections.Generic;
using Unity.Collections;
using UnityEngine;
using Unity.AI.Navigation.LowLevel;

public class NavQueryBufferHashExample : MonoBehaviour
{
    readonly Dictionary<NavQueryBuffer, string> m_Labels = new Dictionary<NavQueryBuffer, string>();
    NavWorld m_World;
    NavQueryBuffer m_Buffer;

    void OnEnable()
    {
        m_World = NavWorld.GetDefaultWorld();
        m_Buffer = new NavQueryBuffer(m_World, Allocator.Persistent, 1024);
        m_Labels[m_Buffer] = "main";
        Debug.Log($"Registered buffer with hash {m_Buffer.GetHashCode()}");
    }

    void OnDisable()
    {
        // Drop the key before disposing, otherwise the dictionary keeps a stale buffer
        // whose hash no longer matches the disposed allocation.
        m_Labels.Remove(m_Buffer);

        m_Buffer.Dispose();
        m_World.Dispose();
    }
}