Unity MOBA类型游戏的战争迷雾效果
2024-05-15 18:14:28
基于视野（FOV）的战争迷雾，例如LOL的视野：鼠标右键点击地板，目标移动，同时显示角色周围视野，鼠标滚轮可以调节远近。
Unity版本：2019.4.1f1
1.新建工程---右键3D Object---Terrain，随便刷一个地形，尽量高低错落，设置地形大小为100*100
2.导入文件，在Camera上添加Fog Of War Effect脚本，脚本会自动添加<Flare Layer>组件，Unity 2018之前的版本需要添加<GUI Layer>组件，2019以后版本被舍弃，无需添加
3.右键创建一个胶囊，模拟玩家，添加NavMeshAgent组件，添加Fog Of War Explorer脚本
using UnityEngine;
using UnityEngine.AI;/// <summary>
/// 视野数据-由于计算fov是在子线程操作，通过将视野数据以object类型参数传入，
/// 使用简单数据类型或结构体会产生装箱操作，因此将视野封装成类
/// </summary>
public class FOWFieldData
{public float radiusSquare;public Vector3 position;public float radius;public FOWFieldData(Vector3 position, float radius){this.position = position;this.radius = radius;this.radiusSquare = radius * radius;}
}/// <summary>
/// Player
/// </summary>
public class FogOfWarExplorer : MonoBehaviour
{[Range(10, 25)] public float radius = 15;//视野半径private Vector3 m_OriginPosition;private FOWMapPos m_FowMapPos;private FOWFieldData m_FieldData;private bool m_IsInitialized;private float distance = 24;//摄像机高度private float angle = 45;//摄像机偏移角度private Vector3 m_CameraPosition;private NavMeshAgent m_Agent;void Start(){m_FieldData = new FOWFieldData(transform.position, radius);m_Agent = gameObject.GetComponent<NavMeshAgent>();Camera.main.transform.rotation = Quaternion.Euler(angle, 0, 0);Camera.main.transform.position = transform.position - Camera.main.transform.forward * distance;}void Update(){if (radius <= 0)return;if (m_OriginPosition != transform.position){m_OriginPosition = transform.position;var pos = FogOfWarEffect.WorldPositionToFOW(transform.position);if (m_FowMapPos.x != pos.x || m_FowMapPos.y != pos.y || !m_IsInitialized){m_FowMapPos = pos;m_IsInitialized = true;m_FieldData.position = transform.position;m_FieldData.radius = radius;//FogOfWarEffect.SetVisibleAtPosition(m_FieldData);FogOfWarEffect.UpdateFOWFieldData(m_FieldData);}}m_CameraPosition = transform.position - Camera.main.transform.forward * distance;Camera.main.transform.position = Vector3.Lerp(Camera.main.transform.position, m_CameraPosition, Time.deltaTime * 3f);BasicOperation();}void OnDestroy(){if (m_FieldData != null)FogOfWarEffect.ReleaseFOWFieldData(m_FieldData);m_FieldData = null;}void OnDrawGizmosSelected(){Gizmos.color = Color.blue;Gizmos.DrawWireSphere(transform.position, radius);}void BasicOperation() {if (Input.GetMouseButtonDown(1))//鼠标右键点击地板{Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);RaycastHit hit;if (Physics.Raycast(ray, out hit)){m_Agent.SetDestination(hit.point);}}if (Input.GetAxis("Mouse ScrollWheel") > 0){if (distance >= 7)distance -= 2;}if (Input.GetAxis("Mouse ScrollWheel") < 0){if (distance <= 35)distance += 2;}}}
4.Scene视角切换成俯视视角，方便调整参数。调整战争迷雾蒙版类型、宽度、高度、战争迷雾中心位置，将特效shader、模糊shader、小地图shader拖入Main Camera上的Fog Of War Effect上
using ASL.FogOfWar;
using System.Collections.Generic;
using UnityEngine;public struct FOWMapPos
{public int x;public int y;public FOWMapPos(int x, int y){this.x = x;this.y = y;}
}/// <summary>
/// 屏幕空间战争迷雾
/// </summary>
[RequireComponent(typeof(FlareLayer))]
public class FogOfWarEffect : MonoBehaviour
{//迷雾蒙版类型public enum FogMaskType{/// <summary>/// 精确计算的FOV/// </summary>AccurateFOV,/// <summary>/// 基础FOV/// </summary>BasicFOV,/// <summary>/// 简单圆形/// </summary>Circular,}//实例化public static FogOfWarEffect Instance{get{if (instance == null)instance = FindObjectOfType<FogOfWarEffect>();return instance;}}private static FogOfWarEffect instance;/// <summary>/// 迷雾蒙版类型/// </summary>public FogMaskType fogMaskType { get { return m_FogMaskType; } }/// <summary>/// 战争迷雾颜色(RGB迷雾颜色，Alpha已探索区域透明度)/// </summary>public Color fogColor { get { return m_FogColor; } }/// <summary>/// 迷雾区域宽度/// </summary>public float xSize { get { return m_XSize; } }/// <summary>/// 迷雾区域高度/// </summary>public float zSize { get { return m_ZSize; } }/// <summary>/// 迷雾贴图宽度/// </summary>public int texWidth { get { return m_TexWidth; } }/// <summary>/// 迷雾贴图高度/// </summary>public int texHeight { get { return m_TexHeight; } }/// <summary>/// 迷雾区域中心坐标/// </summary>public Vector3 centerPosition { get { return m_CenterPosition; } }public float heightRange { get { return m_HeightRange; } }public Texture2D fowMaskTexture{get{if (m_Map != null)return m_Map.GetFOWTexture();return null;}}public RenderTexture minimapMask{get{if (!m_GenerateMinimapMask)return null;return m_Renderer.GetMimiMapMask();}}[Header("战争迷雾蒙版类型")][SerializeField]private FogMaskType m_FogMaskType;[Header("战争迷雾颜色")][SerializeField]private Color m_FogColor = Color.black;[Header("战争迷雾宽度")][SerializeField]private float m_XSize = 77f;[Header("战争迷雾高度")][SerializeField]private float m_ZSize = 77f;[Header("战争迷雾贴图宽度")][SerializeField]private int m_TexWidth = 66;[Header("战争迷雾贴图高度")][SerializeField]private int m_TexHeight = 66;[Header("战争迷雾中心位置")][SerializeField]private Vector3 m_CenterPosition;[Header("高度随机值")][SerializeField]private float m_HeightRange = 1.23f;/// <summary>/// 模糊偏移量/// /// </summary>[Header("模糊偏移量")][SerializeField]private float m_BlurOffset = 0.003f;/// <summary>/// 模糊迭代次数/// </summary>[Header("模糊迭代次数")][SerializeField]private int m_BlurInteration = 2;/// <summary>/// 是否生成小地图蒙版/// </summary>private bool m_GenerateMinimapMask;/// <summary>/// 迷雾特效shader/// </summary>[Header("战争特效Shader")] public Shader effectShader;/// <summary>/// 模糊shader/// </summary>[Header("模糊Shader")] public Shader blurShader;/// <summary>/// 小地图蒙版渲染shader/// </summary>[Header("小地图蒙版渲染Shader")] public Shader minimapRenderShader;[Header("更新周期")][Range(0.0f,1.0f)]public float UpdateTime = 1.0f;/// <summary>/// 预生成的地图FOV数据（如果为空则使用实时计算FOV）/// </summary>//public FOWPregenerationFOVMapData pregenerationFOVMapData;/// <summary>/// 战争迷雾地图对象/// </summary>private FOWMap m_Map;/// <summary>/// 战争迷雾渲染器/// </summary>private FOWRenderer m_Renderer;private bool m_IsInitialized;private float m_MixTime = 0.0f;private float m_RefreshTime = 0.0f;private float m_DeltaX;private float m_DeltaZ;private float m_InvDeltaX;private float m_InvDeltaZ;private Camera m_Camera;private const float kDispearSpeed = 3f;private const float kRefreshTextureSpeed = 4.0f;private Vector3 m_BeginPos;private List<FOWFieldData> m_FieldDatas;private bool m_IsFieldDatasUpdated;void Awake(){m_IsInitialized = Init();}void OnDestroy(){if (m_Renderer != null)m_Renderer.Release();if (m_Map != null)m_Map.Release();if (m_FieldDatas != null)m_FieldDatas.Clear();m_FieldDatas = null;m_Renderer = null;m_Map = null;instance = null;}void FixedUpdate(){/*更新迷雾纹理*/if (m_MixTime >= UpdateTime){if (m_RefreshTime >= UpdateTime){m_RefreshTime = 0.0f;if (m_Map.RefreshFOWTexture()){m_Renderer.SetFogFade(0);m_MixTime = 0;m_IsFieldDatasUpdated = false;//m_Renderer.SetFogTexture(m_Map.GetFOWTexture());}}else{m_RefreshTime += Time.deltaTime * kRefreshTextureSpeed;}}else{m_MixTime += Time.deltaTime * kDispearSpeed;m_Renderer.SetFogFade(m_MixTime);}}private bool Init(){if (m_XSize <= 0 || m_ZSize <= 0 || m_TexWidth <= 0 || m_TexHeight <= 0)return false;if (effectShader == null || !effectShader.isSupported)return false;m_Camera = gameObject.GetComponent<Camera>();if (m_Camera == null)return false;m_Camera.depthTextureMode |= DepthTextureMode.Depth;m_DeltaX = m_XSize / m_TexWidth;m_DeltaZ = m_ZSize / m_TexHeight;m_InvDeltaX = 1.0f / m_DeltaX;m_InvDeltaZ = 1.0f / m_DeltaZ;m_BeginPos = m_CenterPosition - new Vector3(m_XSize * 0.5f, 0, m_ZSize * 0.5f);m_Renderer = new FOWRenderer(effectShader, blurShader, minimapRenderShader, m_CenterPosition, m_XSize, m_ZSize, m_FogColor, m_BlurOffset, m_BlurInteration);m_Map = new FOWMap(m_FogMaskType, m_BeginPos, m_XSize, m_ZSize, m_TexWidth, m_TexHeight, m_HeightRange);IFOWMapData md = gameObject.GetComponent<IFOWMapData>();if (md != null)m_Map.SetMapData(md);else{m_Map.SetMapData(new FOWMapData(m_TexHeight, m_TexHeight));m_Map.GenerateMapData(m_HeightRange);}if (minimapRenderShader != null)m_GenerateMinimapMask = true;return true;}/// <summary>/// 世界坐标转战争迷雾坐标/// </summary>/// <param name="position"></param>/// <returns></returns>public static FOWMapPos WorldPositionToFOW(Vector3 position){if (!Instance)return default(FOWMapPos);if (!Instance.m_IsInitialized)return default(FOWMapPos);int x = Mathf.FloorToInt((position.x - Instance.m_BeginPos.x) * Instance.m_InvDeltaX);int z = Mathf.FloorToInt((position.z - Instance.m_BeginPos.z) * Instance.m_InvDeltaZ);return new FOWMapPos(x, z);}public static Vector2 WorldPositionTo2DLocal(Vector3 position){if (!Instance)return default(Vector2);if (!Instance.m_IsInitialized)return default(Vector2);Vector2 pos = default(Vector2);pos.x = (position.x - Instance.m_BeginPos.x) / Instance.m_XSize;pos.y = (position.z - Instance.m_BeginPos.z) / Instance.m_ZSize;return pos;}/ <summary>/ 将指定位置设置为可见/ </summary>/ <param name="fieldData">视野</param>//public static void SetVisibleAtPosition(FOWFieldData fieldData)//{// if (!Instance)// return;// if (!Instance.m_IsInitialized)// return;// if (fieldData == null)// return;// Instance.m_Map.SetVisible(fieldData);//}public static void UpdateFOWFieldData(FOWFieldData data){if (!Instance)return;if (!Instance.m_IsInitialized)return;if (Instance.m_FieldDatas == null)Instance.m_FieldDatas = new List<FOWFieldData>();if (!Instance.m_FieldDatas.Contains(data)){Instance.m_FieldDatas.Add(data);}if (!Instance.m_IsFieldDatasUpdated){//lock (Instance.m_FieldDatas){Instance.m_Map.SetVisible(Instance.m_FieldDatas);Instance.m_IsFieldDatasUpdated = true;}}}public static void ReleaseFOWFieldData(FOWFieldData data){if (!instance)return;if (!instance.m_IsInitialized)return;//lock (instance.m_FieldDatas){if (instance.m_FieldDatas != null && instance.m_FieldDatas.Contains(data))instance.m_FieldDatas.Remove(data);}}/// <summary>/// 是否在地图中可见/// </summary>/// <param name="position"></param>/// <returns></returns>public static bool IsVisibleInMap(Vector3 position){if (!Instance)return true;if (!Instance.m_IsInitialized)return true;int x = Mathf.FloorToInt((position.x - Instance.m_BeginPos.x) * Instance.m_InvDeltaX);int z = Mathf.FloorToInt((position.z - Instance.m_BeginPos.z) * Instance.m_InvDeltaZ);return Instance.m_Map.IsVisibleInMap(x, z);}void OnRenderImage(RenderTexture src, RenderTexture dst){if (!m_IsInitialized)Graphics.Blit(src, dst);else{m_Renderer.RenderFogOfWar(m_Camera, m_Map.GetFOWTexture(), src, dst);}}void OnDrawGizmosSelected(){FOWUtils.DrawFogOfWarGizmos(m_CenterPosition, m_XSize, m_ZSize, m_TexWidth, m_TexHeight, m_HeightRange);}
}
5.单击Terrain 右上角勾选静态Static,Windows----AI---Navigation，Bake---Bake
6.运行即可查看效果，你还可以添加小地图和右键点击动画等效果。
如果你的场景和我的不一样，那也没关系，我改了光照设置，不改也没问题，我的光照设置如下：
资源下载：点击下载
网盘下载：访问码:2oeb
参考资料：GitHub
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