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通过网盘分享的文件：CubeMoveMusic.unitypackage
链接: https://pan.baidu.com/s/1Rq-HH4H9qzVNtpQ84WXyUA?pwd=a7xn 提取码: a7xn 

运行游戏点击空格动态创建拉伸的方块，由Speed控制速度，新方向是随机上下左右生成。 

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class CubeMoveGameCamera : MonoBehaviour
{private Vector3 constDir;public GeneMap geneMap;void Start(){constDir = transform.position - geneMap.defaultPos;}// Update is called once per framevoid Update(){transform.position = constDir + geneMap.GetPos();}
}

生成移动方块以及单方向拉伸方块脚本：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class GeneMap : MonoBehaviour
{public enum Side{Top, Bottom, Left, Right}public GameObject cubePrefab;private GameObject movingCubeGo;private Transform movingCubeTrans;private Side moveSide;public Vector3 defaultPos;public float speed = 1f;private Matrix4x4 rotationMatrix4x4;private void Start(){rotationMatrix4x4 = Matrix4x4.TRS(Vector3.zero, cubePrefab.transform.localRotation, Vector3.one);}Side MirrorSide(Side side){if (side == Side.Top){return Side.Bottom;}if (side == Side.Bottom){return Side.Top;}if (side == Side.Left){return Side.Right;}if (side == Side.Right){return Side.Left;}Debug.LogError("?");return Side.Top;}public bool IsMoving(){return movingCubeGo != null;}public Vector3 GetPos(){Vector3 pos = defaultPos;if (IsMoving()){//利用上一个移动物体的方向，通过不同方向的移动物体局部大小得到偏移量，而0.5f是下一个新物体一半的偏移Vector3 oldOffset = Vector3.zero;switch (moveSide){case Side.Top:oldOffset = new Vector3(0, 0, movingCubeTrans.localScale.z - 0.5f);break;case Side.Bottom:oldOffset = new Vector3(0, 0, -movingCubeTrans.localScale.z + 0.5f);break;case Side.Left:oldOffset = new Vector3(-movingCubeTrans.localScale.x + 0.5f, 0, 0);break;case Side.Right://例如上一个物体是右方向，则使用局部大小x作为偏移量数值，并且需要-0.5f来让新物体的整体恰好在前一个延伸物体的内部。oldOffset = new Vector3(movingCubeTrans.localScale.x - 0.5f, 0, 0);break;default:break;}pos = movingCubeTrans.position + rotationMatrix4x4.MultiplyPoint(oldOffset);}return pos;}private void Update(){if (movingCubeGo != null){if (moveSide == Side.Top || moveSide == Side.Bottom){movingCubeTrans.localScale = new Vector3(1, 1, movingCubeTrans.localScale.z + speed * Time.deltaTime);}else{movingCubeTrans.localScale = new Vector3(movingCubeTrans.localScale.x + speed * Time.deltaTime, 1, 1);}}if (Input.GetKeyDown(KeyCode.Space)){Vector3 pos = GetPos();movingCubeGo = GameObject.Instantiate(cubePrefab);movingCubeTrans = movingCubeGo.transform;List<int> sideList = new List<int>();for (int i = 0; i < 4; i++){if (i != (int)moveSide && i != (int)MirrorSide(moveSide)){sideList.Add(i);}}int randomIndex = Random.Range(0, sideList.Count);moveSide = (Side)sideList[randomIndex];//1、新物体在进行朝着新方向移动时，需要对子物体Cube调整局部位置（目的：锚点轴心偏移，实现单方向延伸）//2、newOffset用于将新移动物体偏移到新移动方向的上一个物体边缘位置点Vector3 newOffset = Vector3.zero;Vector3 newLocalScale = Vector3.one;Transform childTrans = movingCubeTrans.Find("Cube");childTrans.GetComponent<MeshRenderer>().material.SetColor("_Color", new Color(Random.Range(0, 256) / 255f, Random.Range(0, 256) / 255f, Random.Range(0, 256) / 255f, 1));switch (moveSide){case Side.Top:childTrans.localPosition = new Vector3(0, 0, 0.5f);newOffset = new Vector3(0, 0, 0.5f);newLocalScale = new Vector3(1, 1, 0);break;case Side.Bottom:childTrans.localPosition = new Vector3(0, 0, -0.5f);newOffset = new Vector3(0, 0, -0.5f);newLocalScale = new Vector3(1, 1, 0);break;case Side.Left:childTrans.localPosition = new Vector3(-0.5f, 0, 0);newOffset = new Vector3(-0.5f, 0, 0);newLocalScale = new Vector3(0, 1, 1);break;case Side.Right://例如右方向的Cube子物体需要偏移(0.5f,0,0)保证锚点是在物体左侧childTrans.localPosition = new Vector3(0.5f, 0, 0);//右方向的新物体起点要在上一个物体的右侧边缘点作为起点，故x轴+0.5fnewOffset = new Vector3(0.5f, 0, 0);//右方向的新物体大小X轴要从0开始newLocalScale = new Vector3(0, 1, 1);break;default:break;}movingCubeTrans.position = pos + rotationMatrix4x4.MultiplyPoint(newOffset);movingCubeTrans.localScale = newLocalScale;}}
}