RogueLike地图随机生成
挺喜欢玩《以撒的结合》的，觉得游戏里房间的随机生成挺有意思
刚好在写一个自己的RogueLike游戏，就想着来复刻一下
首先来看一下《以撒的结合》中地图的模样
可以看到是由n个房间组合而成的
这里有几个注意点：
每个房间都必须连通，即玩家可以从任意一个房间走到另外一个任意房间。拥有不同功能的房间，并且按照功能有特殊生成规则。比如说，BOSS房间不能太靠近初始房间。
初步想法就是，创建一个Generator，通过控制Generator上下左右随机行动，来逐步生成每个房间
具体实现
首先创建一个长方形的白色Sprite（名为Room）代替房间轮廓并标上序号
然后给房间加上一个Trigger（具体如图中绿框）
Trigger目的是表明房间实体是否生成
编写Room.cs并添加到Room中
using UnityEngine;using UnityEngine.UI;public class Room : MonoBehaviour{public Text text;public int stepToStart;// Start is called before the first frame updatevoid Start(){}// Update is called once per framevoid Update(){}public void UpdateRoom(int order){text.text = order.ToString(); //房间序号}}
创建RoomGenerator，并创建生成点Point
用枚举来表明Point移动的四个方向
当移动完毕之后，判断该点是否有房间存在
若有则继续移动，若无则结束移动
public enum Direction {up, down, left, right }public Direction direction;do{direction = (Direction)Random.Range(0, 4);switch (direction){case Direction.up:generatorPoint.position += new Vector3(0, yOffset, 0);break;case Direction.down:generatorPoint.position += new Vector3(0, -yOffset, 0);break;case Direction.left:generatorPoint.position += new Vector3(-xOffset, 0, 0);break;case Direction.right:generatorPoint.position += new Vector3(xOffset, 0, 0);break;}}while (Physics2D.OverlapCircle(generatorPoint.position, 0.2f, roomLayer));
当Point移动完毕后，将房间生成
生成完毕的房间存储在List当中，方便调用
为了看的更清楚，可以将头尾房间用不同的颜色标记出
编写RoomGenerator.cs并添加到RoomGenerator中
using UnityEngine;using UnityEngine.SceneManagement;public class RoomGenerator : MonoBehaviour{public enum Direction {up, down, left, right }public Direction direction;[Header("房间信息")]public GameObject roomPrefab;public int roomQuantity;public Color startColor, endColor;[Header("位置控制")]public Transform generatorPoint;public float xOffset;public float yOffset;public LayerMask roomLayer;public List<Room> rooms = new List<Room>();// Start is called before the first frame updatevoid Start(){for (int i = 0; i < roomQuantity; i++){rooms.Add(Instantiate(roomPrefab, generatorPoint.position, Quaternion.identity).GetComponent<Room>());ChangePointPos();}rooms[0].GetComponent<SpriteRenderer>().color = startColor; //设定起始房间颜色rooms[roomQuantity-1].GetComponent<SpriteRenderer>().color = endColor; //设定末尾房间颜色foreach (var room in rooms){room.UpdateRoom(rooms.IndexOf(room)+1); //更新房间距离}}// Update is called once per framevoid Update(){if (Input.anyKeyDown) //此处为了方便调试，通过按键重新生成{SceneManager.LoadScene(SceneManager.GetActiveScene().name);}}public void ChangePointPos(){do{direction = (Direction)Random.Range(0, 4);switch (direction){case Direction.up:generatorPoint.position += new Vector3(0, yOffset, 0);break;case Direction.down:generatorPoint.position += new Vector3(0, -yOffset, 0);break;case Direction.left:generatorPoint.position += new Vector3(-xOffset, 0, 0);break;case Direction.right:generatorPoint.position += new Vector3(xOffset, 0, 0);break;}} while (Physics2D.OverlapCircle(generatorPoint.position, 0.2f, roomLayer));}}
RoomGenerator.cs的配置信息
然后运行调试
可以看到，在房间数量为6的测试下，生成效果很理想
