人物行走在柏林噪声地图

效果：

 前期准备： 人物能行走在绘制的柏林噪声地图上，是因为用了动态烘焙地图插件

为人物挂载插件中的LocalNavMeshBuilder脚本：

为柏林噪声地图在代码中动态动态动态添加NavMeshSourceTag脚本：

实现：

 人物的3种移动：

创建人物，挂载下面脚本即可。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;public class PlayerMove : MonoBehaviour
{public ETC m_ETC;[Header("移动速度")]public float m_MoveSpeed;[Header("旋转速度")]public float m_RotateSpeed;[Header("小地图箭头")]public RectTransform arrowImg;void Update(){//小地图箭头指向   与   人物真实方向  保持一致arrowImg.localEulerAngles = Vector3.back * gameObject.transform.eulerAngles.y;#region 射线检测移动if (Input.GetMouseButtonDown(1)){Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);if (Physics.Raycast(ray, out RaycastHit hit)){if (hit.collider.CompareTag("PerlinMap")){transform.GetComponent<NavMeshAgent>().SetDestination(hit.point);}}}#endregion#region 摇杆移动float h = m_ETC.GetAxis("Horizontal");float v = m_ETC.GetAxis("Vertical");Vector3 dir = new Vector3(h, 0, v);if (dir!=Vector3.zero){//摇杆结合导航transform.GetComponent<NavMeshAgent>().SetDestination(dir+transform.position);//只是摇杆//transform.LookAt(dir+transform.position);//transform.Translate(Vector3.forward * Time.deltaTime * 5);}#endregion#region WASD移动transform.Translate(Vector3.forward*Input.GetAxis("Vertical")*Time.deltaTime*m_MoveSpeed);transform.Rotate(Vector3.up,Input.GetAxis("Horizontal") * Time.deltaTime * m_RotateSpeed);#endregion}
}

 绘制柏林地图：

创建一个空对象，挂载下面脚本即可。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
/// <summary>
/// 绘制柏林噪声地图
/// </summary>
public class PerlinNoiseMap : MonoBehaviour
{[Header("噪声强度")]public float noisily;[Header("地图长")]public int mapWidth;[Header("地图宽")]public int mapHeight;[Header("底层颜色")]public Color downColor;[Header("上层颜色")]public Color upColor;[Header("小地图")]public Image miniMap;public GameObject player;private void Start(){VertexHelper vh = new VertexHelper();Texture2D texture = new Texture2D(mapWidth, mapHeight);for (int x = 0; x < mapWidth; x++){for (int z = 0; z < mapHeight; z++){float y = Mathf.PerlinNoise(x * noisily * 0.1f, z * noisily * 0.1f);//不乘系数就是平面效果//uv坐标  最外面一层不算float uvx = (float)x / (mapWidth - 1);float uvy = (float)z / (mapHeight - 1);Color color = Color.Lerp(downColor, upColor, y);texture.SetPixel(x, z, color);vh.AddVert(new Vector3(x, y * noisily, z), color, new Vector2(uvx, uvy));if (x < mapWidth - 1 && z < mapHeight - 1){vh.AddTriangle(x * mapHeight + z, x * mapHeight + z + 1, (x + 1) * mapHeight + z);vh.AddTriangle((x + 1) * mapHeight + z, x * mapHeight + z + 1, (x + 1) * mapHeight + z + 1);}}}texture.Apply();Mesh mesh = new Mesh();vh.FillMesh(mesh);gameObject.AddComponent<MeshFilter>().mesh = mesh;gameObject.AddComponent<MeshCollider>().sharedMesh = mesh;gameObject.AddComponent<MeshRenderer>().material.mainTexture = texture;//插件实现，添加NavMeshSourceTag组件，能让玩家在柏林噪声地图上gameObject.AddComponent<NavMeshSourceTag>();//小地图材质赋值Material m = new Material(Shader.Find("UI/Default"));m.mainTexture = texture;miniMap.material = m;}private void Update(){//滚轮控制视野if (Input.GetAxis("Mouse ScrollWheel") != 0 && transform.localScale.x + Input.GetAxis("Mouse ScrollWheel") >= 1){miniMap.transform.localScale += Vector3.one * Input.GetAxis("Mouse ScrollWheel");}else if (Input.GetAxis("Mouse ScrollWheel") != 0 && transform.localScale.x + Input.GetAxis("Mouse ScrollWheel") <= 1){miniMap.transform.localScale += Vector3.one * Input.GetAxis("Mouse ScrollWheel");}//重置小地图锚点   以人物为中心//情况一：人物生成在地图左下角miniMap.rectTransform.pivot = new Vector2(player.transform.position.x / mapWidth, player.transform.position.z / mapHeight);//情况二：人物生成在地图中心//miniMap.rectTransform.pivot = new Vector2((mapWidth / 2 + player.transform.position.x) / mapWidth , (mapHeight / 2 + player.transform.position.z) / mapHeight);}
}

人物生成在地图左下角（上面代码所述情况一）：

人物生成在地图中心（上面代码所述情况二）：