areaMask | 位域遮罩,指定在跟踪路径时可以通过哪些导航网格区域。 |
maxDistance | 在此距离终止扫描路径。 |
hit | 保留所生成位置的属性。 |
bool 如果在到达 maxDistance 位置之前终止,则为 true,否则为 false。
沿着当前路径对某一位置进行取样。
此函数将沿当前路径向前查找指定的距离。稍后会在 NavMeshHit 对象中返回该位置网格的详细信息。这可用于在角色到达之前检查 前方地面类型等 - 比如说,如果角色即将涉水前进,可以把枪举过头顶 。
using UnityEngine; using UnityEngine.AI; using System.Collections;
public class ExampleClass : MonoBehaviour { public Transform target; private NavMeshAgent agent; private int waterMask;
void Start() { agent = GetComponent<NavMeshAgent>(); waterMask = 1 << NavMesh.GetAreaFromName("Water"); agent.SetDestination(target.position); }
void Update() { NavMeshHit hit;
// Check all areas one length unit ahead. if (!agent.SamplePathPosition(NavMesh.AllAreas, 1.0F, out hit)) if ((hit.mask & waterMask) != 0) { // Water detected along the path... } } }
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