【unity 5学习记录】 可编辑地形 网格（类似minecraft）17.8.8
本篇文章是从新浪搬过来的。http://blog.sina.com.cn/s/articlelist_5880195292_0_1.html点击打开链接
新浪每次该文章。尖括号都会莫名其妙消失掉，而且也用了转义符号。所以以后博客都在这里发布。
这是当前地形编辑的效果
附上源码 原理讲解在下一篇http://blog.csdn.net/zhong1213/article/details/76906336
TerrainManager.cs
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using
UnityEngine; using System.Collections; using System.Collections.Generic; public class TerrainManager : MonoBehaviour { Mesh mesh; //材质 public Material diffuseMap; //顶点、uv、索引信息 private Vector3[] vertives; private Vector2[] uvs; private int [] triangles; private ushort [] blockData; //生成信息 private Vector3 chunkSize; //长宽高 private int groundHeight; //地面高度 //区块主体 private GameObject terrain; void Start() { SetTerrain( 10 , 10 , 10 , 5 ); } // 通过参数生成地形 public void SetTerrain( float width, float height, float length, int groundH) { Init(width, height, length, groundH); //初始化数据 GetVertives(); DrawMesh(); terrain.AddComponent } private void Init( float width, float height, float length, int groundH) { chunkSize = new Vector3(width, height, length); //初始化区块尺寸并赋值 groundHeight = groundH; //给地面高度赋值 if (terrain != null ) { Destroy(terrain); } terrain = new GameObject(); //初始化区间 terrain.name = "plane" ; //设置chunk名字 terrain.layer = 8 ; //设置区间所在层数。只有这一层内的碰撞体才会被射线检测到 blockData = new ushort [( int )(chunkSize.x * chunkSize.y * chunkSize.z)]; //初始化方块数据，方括号内是该区间内所容纳方块数，该数组的容量 //该循环遍历0，0，0 到 （chunksize-1，chunksize-1，chunksize-1）的方块位置。并根据地面高度。分配方块对应的数字。0是空，1是有方块 for ( int x = 0 ; x < chunkSize.x; x++) { for ( int y = 0 ; y < chunkSize.y; y++) { for ( int z = 0 ; z < chunkSize.z; z++) { if (y <= groundH) { blockData[getBlockIndex(x, y, z)] = 1 ; } else { blockData[getBlockIndex(x, y, z)] = 0 ; } } } } //用于测试 blockData[getBlockIndex( 5 , 1 , 5 )] = 0 ; blockData[getBlockIndex( 5 , 2 , 5 )] = 0 ; blockData[getBlockIndex( 5 , 3 , 5 )] = 0 ; blockData[getBlockIndex( 5 , 4 , 5 )] = 0 ; blockData[getBlockIndex( 5 , 5 , 5 )] = 0 ; blockData[getBlockIndex( 5 , 5 , 6 )] = 0 ; blockData[getBlockIndex( 5 , 5 , 7 )] = 0 ; blockData[getBlockIndex( 6 , 5 , 5 )] = 0 ; blockData[getBlockIndex( 7 , 5 , 5 )] = 0 ; } public void BuildBlock( float px, float py, float pz, int blockID) { //获取对应的方块并且赋值blockID blockData[( int )((pz + py * (( int )chunkSize.z) + (px * ( int )(chunkSize.y) * ( int )(chunkSize.z))))] = ( ushort )blockID; //这里开始重绘网格 GetVertives(); //给mesh 赋值 mesh.Clear(); mesh.vertices = vertives; //,pos); mesh.uv = uvs; mesh.triangles = triangles; //重置法线 mesh.RecalculateNormals(); //重置范围 mesh.RecalculateBounds(); //更新网格碰撞体 terrain.GetComponent } /// private void DrawMesh() { mesh = terrain.AddComponent terrain.AddComponent if (diffuseMap == null ) { Debug.LogWarning( "No material,Create diffuse!!" ); diffuseMap = new Material(Shader.Find( "Diffuse" )); } terrain.GetComponent mesh.Clear(); mesh.vertices = vertives; //,pos); mesh.uv = uvs; mesh.triangles = triangles; //重置法线 mesh.RecalculateNormals(); //重置范围 mesh.RecalculateBounds(); } /// /// /// private Vector3[] GetVertives() { int index = 0 ; //顶点初始序号 //GetUV(); vertives = new Vector3[( int )((chunkSize.x + 1 ) * (chunkSize.y + 1 ) * (chunkSize.z + 1 ))]; //初始化顶点序号 for ( int x = 0 ; x < chunkSize.x + 1 ; x++) { for ( int y = 0 ; y < chunkSize.y + 1 ; y++) { for ( int z = 0 ; z < chunkSize.z + 1 ; z++) { if (y == 0 ) //底面一定绘制 { vertives[index] = new Vector3(x, y, z); } else { if (!ifIsSide(x, y, z, 0 )) { if (ifDifFromAround(x, y, z)) { vertives[index] = new Vector3(x, y, z); } } } index++; //即将进行下一个遍历，顶点序号加一，这样是为了每一个坐标都有唯一对应的顶点序号。便于后面绘制三角形通过坐标计算顶点序号 } } } GetTriangles(); //生成三角形信息 return vertives; } //这个包含方块序号和坐标的对应规则，可以直接通过方块坐标获得方块序号 private int getBlockIndex( int x, int y, int z) { return (z + y * (( int )chunkSize.z) + (x * ( int )(chunkSize.y) * ( int )(chunkSize.z))); } //这部分是为了接下来多区块准备的，就是避开绘制周围一圈方块，因为周围一圈方块的绘制需要根据相邻chunk里的方块来绘制 private bool ifIsSide( int x, int y, int z, int VorT) //v =0 t=1 { if (VorT == 0 ) //0是给顶点遍历用的 { if (x == 0 || y == 0 || z == 0 || x >= ( int )chunkSize.x || y >= ( int )chunkSize.y || z >= ( int )chunkSize.z) { return true ; } else { return false ; } } else //1是给三角形遍历用的 { if (x == 0 || y == 0 || z == 0 || x >= ( int )chunkSize.x - 1 || y >= ( int )chunkSize.y - 1 || z >= ( int )chunkSize.z - 1 ) { return true ; } else { return false ; } } } //这部分是顶点遍历的时候。判断顶点周围八个方块是不是一样。只有不一样的情况。这个顶点才会被加载 private bool ifDifFromAround( int x, int y, int z) { if (blockData[getBlockIndex(x, y, z)] == 0 ) { if (blockData[getBlockIndex(x - 1 , y, z)] > 0 || blockData[getBlockIndex(x, y - 1 , z)] > 0 || blockData[getBlockIndex(x, y, z - 1 )] > 0 || blockData[getBlockIndex(x - 1 , y - 1 , z)] > 0 || blockData[getBlockIndex(x, y - 1 , z - 1 )] > 0 || blockData[getBlockIndex(x - 1 , y, z - 1 )] > 0 || blockData[getBlockIndex(x - 1 , y - 1 , z - 1 )] > 0 ) { return true ; } else { return false ; } } else { if (blockData[getBlockIndex(x - 1 , y, z)] == 0 || blockData[getBlockIndex(x, y - 1 , z)] == 0 || blockData[getBlockIndex(x, y, z - 1 )] == 0 || blockData[getBlockIndex(x - 1 , y - 1 , z)] == 0 || blockData[getBlockIndex(x, y - 1 , z - 1 )] == 0 || blockData[getBlockIndex(x - 1 , y, z - 1 )] == 0 || blockData[getBlockIndex(x - 1 , y - 1 , z - 1 )] == 0 ) { return true ; } else { return false ; } } return false ; } /// /// /// /*private Vector2[] GetUV() { int sum = Mathf.FloorToInt((segment.x + 1) * (segment.y + 1)); uvs = new Vector2[sum]; float u = 1.0F / segment.x; float v = 1.0F / segment.y; uint index = 0; for (int i = 0; i < segment.y + 1; i++) { for (int j = 0; j < segment.x + 1; j++) { uvs[index] = new Vector2(j * u, i * v); index++; } } return uvs; }*/ /// /// /// private int [] GetTriangles() { int sum = Mathf.FloorToInt(chunkSize.x * chunkSize.y * chunkSize.z * 6 ); triangles = new int [sum]; //初始化三角形数组 uint index = 0 ; //初始三角形序号 for ( int x = 0 ; x < chunkSize.x; x++) { for ( int y = 0 ; y < chunkSize.y; y++) { for ( int z = 0 ; z < chunkSize.z; z++) { /*if (blockData[z + (y * (int)chunkSize.z) + (x * (int)chunkSize.y * (int)chunkSize.z)] != 0){ if (y == 0){ int self = z + y * ((int)chunkSize.z+1)+ (x * (int)(chunkSize.y+1) * (int)(chunkSize.z+1)); int next = z + (y * (int)(chunkSize.z + 1) + ((x+1) * (int)((chunkSize.y + 1) * (chunkSize.z + 1)))); triangles[index] = self; triangles[index + 1] = self + 1; triangles[index + 2] = next + 1; triangles[index + 3] = self; triangles[index + 4] = next + 1; triangles[index + 5] = next; index += 6; } }*/ if (y == 0 ) { int self = z + y * (( int )chunkSize.z + 1 ) + (x * ( int )(chunkSize.y + 1 ) * ( int )(chunkSize.z + 1 )); int next = z + (y * ( int )(chunkSize.z + 1 ) + ((x + 1 ) * ( int )((chunkSize.y + 1 ) * (chunkSize.z + 1 )))); triangles[index] = self; triangles[index + 1 ] = self + 1 ; triangles[index + 2 ] = next + 1 ; triangles[index + 3 ] = self; triangles[index + 4 ] = next + 1 ; triangles[index + 5 ] = next; index += 6 ; } else { if (!ifIsSide(x, y, z, 1 )) { if (blockData[getBlockIndex(x, y, z)] == 0 ) { //下面是判断当前坐标方块上下左右前后的方块是不是实心的 //如果是实心的就把面绘制出来。而且要注意三角形面的绘制是一侧的。取决于你取点的顺序。顺时针就是正面，逆时针就是反面 //check up and draw triangle if (blockData[getBlockIndex(x, y + 1 , z)] != 0 ) { int self = z + (y + 1 ) * (( int )chunkSize.z + 1 ) + (x * ( int )(chunkSize.y + 1 ) * ( int )(chunkSize.z + 1 )); int next = z + ((y + 1 ) * ( int )(chunkSize.z + 1 ) + ((x + 1 ) * ( int )((chunkSize.y + 1 ) * (chunkSize.z + 1 )))); triangles[index] = self; triangles[index + 1 ] = next + 1 ; triangles[index + 2 ] = self + 1 ; triangles[index + 3 ] = self; triangles[index + 4 ] = next; triangles[index + 5 ] = next + 1 ; index += 6 ; } //check doawn and draw triangle if (blockData[getBlockIndex(x, y - 1 , z)] != 0 ) { int self = z + (y) * (( int )chunkSize.z + 1 ) + (x * ( int )(chunkSize.y + 1 ) * ( int )(chunkSize.z + 1 )); int next = z + ((y) * ( int )(chunkSize.z + 1 ) + ((x + 1 ) * ( int )((chunkSize.y + 1 ) * (chunkSize.z + 1 )))); triangles[index] = self; triangles[index + 1 ] = self + 1 ; triangles[index + 2 ] = next + 1 ; triangles[index + 3 ] = self; triangles[index + 4 ] = next + 1 ; triangles[index + 5 ] = next; index += 6 ; } //side if (blockData[getBlockIndex(x, y, z - 1 )] != 0 ) { int self = z + (y) * (( int )chunkSize.z + 1 ) + (x * ( int )(chunkSize.y + 1 ) * ( int )(chunkSize.z + 1 )); int next = z + ((y) * ( int )(chunkSize.z + 1 ) + ((x + 1 ) * ( int )((chunkSize.y + 1 ) * (chunkSize.z + 1 )))); int sup = self + ( int )chunkSize.z + 1 ; int nup = next + ( int )chunkSize.z + 1 ; triangles[index] = self; triangles[index + 1 ] = nup; triangles[index + 2 ] = sup; triangles[index + 3 ] = self; triangles[index + 4 ] = next; triangles[index + 5 ] = nup; index += 6 ; } if (blockData[getBlockIndex(x, y, z + 1 )] != 0 ) { int self = z + 1 + (y) * (( int )chunkSize.z + 1 ) + (x * ( int )(chunkSize.y + 1 ) * ( int )(chunkSize.z + 1 )); int next = z + 1 + ((y) * ( int )(chunkSize.z + 1 ) + ((x + 1 ) * ( int )((chunkSize.y + 1 ) * (chunkSize.z + 1 )))); int sup = self + ( int )chunkSize.z + 1 ; int nup = next + ( int )chunkSize.z + 1 ; triangles[index] = self; triangles[index + 1 ] = sup; triangles[index + 2 ] = nup; triangles[index + 3 ] = self; triangles[index + 4 ] = nup; triangles[index + 5 ] = next; index += 6 ; } if (blockData[getBlockIndex(x - 1 , y, z)] != 0 ) { int self = z + (y) * (( int )chunkSize.z + 1 ) + (x * ( int )(chunkSize.y + 1 ) * ( int )(chunkSize.z + 1 )); int next = z + ((y) * ( int )(chunkSize.z + 1 ) + ((x + 1 ) * ( int )((chunkSize.y + 1 ) * (chunkSize.z + 1 )))); int sup = self + ( int )chunkSize.z + 1 ; int nup = next + ( int )chunkSize.z + 1 ; triangles[index] = self; triangles[index + 1 ] = sup; triangles[index + 2 ] = sup + 1 ; triangles[index + 3 ] = self; triangles[index + 4 ] = sup + 1 ; triangles[index + 5 ] = self + 1 ; index += 6 ; } if (blockData[getBlockIndex(x + 1 , y, z)] != 0 ) { int self = z + (y) * (( int )chunkSize.z + 1 ) + ((x + 1 ) * ( int )(chunkSize.y + 1 ) * ( int )(chunkSize.z + 1 )); int next = z + ((y) * ( int )(chunkSize.z + 1 ) + ((x + 2 ) * ( int )((chunkSize.y + 1 ) * (chunkSize.z + 1 )))); int sup = self + ( int )chunkSize.z + 1 ; int nup = next + ( int )chunkSize.z + 1 ; triangles[index] = self; triangles[index + 1 ] = sup + 1 ; triangles[index + 2 ] = sup; triangles[index + 3 ] = self; triangles[index + 4 ] = self + 1 ; triangles[index + 5 ] = sup + 1 ; index += 6 ; } } } } } } } return triangles; } } |
ray.cs
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using
System;
using System.Collections; using System.Collections.Generic; using UnityEngine; public class ray : MonoBehaviour { private TerrainManager terraManager; void Start () { terraManager = GameObject.Find( "Map" ).GetComponent
} void Update() { RaycastHit hit; Vector3 fwd = transform.TransformDirection(Vector3.forward); //获取摄像头向前的方向 if (Physics.Raycast(transform.position, fwd, out hit, Mathf.Infinity, 1 << 8 )) { Debug.DrawLine(transform.position, hit.point, Color.red); //scene视图中绘制射线 float px = Mathf.Floor(hit.point.x); float py = Mathf.Floor(hit.point.y); float pz = Mathf.Floor(hit.point.z); GameObject.Find( "po2" ).transform.position = new Vector3(px + 0 .5F, py + 1 , pz + 0 .5f); if (Input.GetMouseButtonDown( 0 )) { terraManager.BuildBlock(px, py - 1 , pz, 0 ); } else if (Input.GetMouseButtonDown( 1 )) { terraManager.BuildBlock(px, py, pz, 1 ); } else if (Input.GetMouseButtonDown( 2 )) { terraManager.SetTerrain( 10 , 10 , 10 , 5 ); } else { //没有碰撞时 } } } } |
playerControl.cs
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using
UnityEngine; using System.Collections; public class playerControl: MonoBehaviour { public float sensitivityY = 2 .0f; //上下最大视角（Y视角） public float minmumY = -60f; public float maxmunY = 60f; float rotationY = 0f; public const int HERO_UP = 0 ; public const int HERO_RIGHT = 1 ; public const int HERO_DOWN = 2 ; public const int HERO_LEFT = 3 ; public GameObject mc; //人物当前行走的方向状态 public int state = 0 ; //人物移动速度 public int moveSpeed = 2 ; //初始化人物位置 public void Awake() { state = HERO_UP; } // Use this for initialization void Start() { mc = GameObject.Find( "mc" ); } // Update is called once per frame void Update() { float x1 = 0 , x2 = 0 ; x2 = Input.mousePosition.x; if (x1 != x2) { this .gameObject.transform.Rotate( new Vector3( 0 , Input.GetAxis( "Mouse X" ) * Time.deltaTime * 100 , 0 )); } x1 = x2; //Debug.Log(mc.transform.localEulerAngles); //根据鼠标移动的快慢（增量），获取相机上下移动的角度（处理Y） rotationY += Input.GetAxis( "Mouse Y" ) * sensitivityY; //角度限制，rotationY小于min返回min 大于max 返回max 否则返回value rotationY = Clamp(rotationY, maxmunY, minmumY); //设置摄像机角度 mc.transform.localEulerAngles = new Vector3(-rotationY, 0 , 0 ); //获取控制的方向， 上下左右， float KeyVertical = Input.GetAxis( "Vertical" ); float KeyHorizontal = Input.GetAxis( "Horizontal" ); //Debug.Log("keyVertical" + KeyVertical); //Debug.Log("keyHorizontal" + KeyHorizontal); if (KeyVertical == - 1 ) { setHeroState(HERO_DOWN); } else if (KeyVertical == 1 ) { setHeroState(HERO_UP); } if (KeyHorizontal == 1 ) { setHeroState(HERO_RIGHT); } else if (KeyHorizontal == - 1 ) { setHeroState(HERO_LEFT); } if (KeyVertical == 0 && KeyHorizontal == 0 ) { } } public float Clamp( float value, float max, float min) { if (value < min) return min; if (value > max) return max; return value; } void setHeroState( int newState) { //根据当前人物方向与上一次备份的方向计算出模型旋转的角度 int rotateValue = (newState - state) * 90 ; Vector3 transformValue = new Vector3(); //播放行走动画 //模型移动的位置数值 switch (newState) { case HERO_UP: transformValue = (Vector3.forward) * Time.deltaTime; ; break ; case HERO_DOWN: transformValue = (-Vector3.forward) * Time.deltaTime; break ; case HERO_LEFT: transformValue = Vector3.left * Time.deltaTime; break ; case HERO_RIGHT: transformValue = (-Vector3.left) * Time.deltaTime; break ; } //移动人物 this .gameObject.transform.Translate(transformValue * moveSpeed); state = newState; } } |