今天遇到一個問題，就是怎樣處理一些動態的障礙物。

NavMesh是能夠躲避靜態的障礙物。NavMeshObstacle的作用就是動態添加障礙。

可是有個問題，NavMeshObstacle是圓，連橢圓都不行，所以。僅僅好寫一個附屬腳本。用圓拼成矩形，就能夠了。

using UnityEngine;
using System.Collections;

public class NavMeshObstacleHelper : MonoBehaviour {

	//coordinate
	public float X = 0f;
	public float Y = 0f;
	public float Z = 0f;

	public float Length = 0f;
	public float Width = 0f;
	public float Height = 0f;
	public float Diameter = 0f;

	private int lengthCount = 0;
	private float lengthStep = 0f;
	private int widthCount = 0;
	private float widthStep = 0f;

	private GameObject obstacleArray = null;
	private GameObject obstacle = null;

	void Awake()
	{
		obstacleArray = new GameObject ();
		obstacleArray.name = "NavMeshObstacleArray";

		widthCount = (int)(Width / Diameter);	
		lengthCount = (int) (Length / Diameter);

		if (lengthCount > 1)
		{
			lengthStep = (Length - Diameter * lengthCount) / (lengthCount - 1);
		}
		
		if (widthCount > 1)
		{
			widthStep = (Width - Diameter * widthCount) / (widthCount - 1);
		}

	}
	// Use this for initialization
	void Start () {
		initObstacleArray ();
	}

	private void initObstacleArray()
	{
		Vector3 tempPos = new Vector3 (X, Y, Z);

		for (int i = 0; i < lengthCount; i++)
		{
			for (int j = 0; j < widthCount; j++)
			{
				obstacle = new GameObject ();
				obstacle.transform.position = tempPos;
				obstacle.transform.parent = obstacleArray.transform;

				obstacle.AddComponent <NavMeshObstacle>();
				NavMeshObstacle navMeshObstacle = obstacle.GetComponent<NavMeshObstacle> ();
				if (navMeshObstacle)
				{
					obstacle.GetComponent<NavMeshObstacle> ().radius = Diameter / 2;
					obstacle.GetComponent<NavMeshObstacle> ().height = Height;
				}
				tempPos = new Vector3 (tempPos.x, tempPos.y, tempPos.z + Diameter + widthStep);
			}
			tempPos = new Vector3 (tempPos.x + Diameter + lengthStep, tempPos.y,  Z);
		}

		obstacleArray.transform.parent = this.transform;
		obstacleArray.transform.localRotation = Quaternion.identity;
		obstacleArray.transform.position = this.transform.position;

	}

	// Update is called once per frame
	void Update () {
	
	}
}

能夠看一下。效果：

參數設置

NavMesh動態碰撞