python实现地牢迷宫生成的完整步骤

目录

• 基本属性
• 生成房间
• 生成墙壁
• 生成门口
• 生成通道
• 总结 

基本属性

定义当前地牢的等级，地图长宽，房间数量，房间的最小最大长度，如下

class Map:
    def __init__(self):
        self.width = 30
        self.heigh = 30
        self.level = 1
        self.roomNum = 5
        self.map = np.zeros((self.heigh,self.width))
        self.roomMin = 3
        self.roomMax = 11

生成房间

编写initRoom()随机生成房间，限制最多循环次数，为了简单起见，先做一个不会重叠的房间。基本思路是：随机房间的中心点，随机房间的长宽，再进行判断房间有无重叠（在后续会生成通道，简单起见在这里也保证房间不会紧贴），若无重叠，房间有效，房间数加1。贴代码

    def initRoom(self):
        count = 0
        roomCount = 1
        while True:
            count += 1
            if count > 300:
                break
            if roomCount > self.roomNum:
                break
            x = random.randint(1,self.width-1)
            y = random.randint(1,self.heigh-1)
            wd = random.randint(self.roomMin,self.roomMax)
            ht = random.randint(self.roomMin, self.roomMax)
            r1 = ceil(y - ht/2)
            r2 = ceil(y + ht/2)
            c1 = ceil(x - wd/2)
            c2 = ceil(x + wd/2)
            if r1 < 1:
                r1 = 1
            if r2 >= self.heigh - 1:
                r2 = self.heigh - 2
            if c1 < 1:
                c1 = 1
            if c2 >= self.width - 1:
                c2 = self.width - 2
            w = c2 - c1 + 1
            h = r2 - r1 + 1
            if h / w >= 3 or w / h >= 3: #保证房间不是细长的
                continue
            judge = self.isValidRoom(r1,r2,c1,c2)
            if judge == 0:
                roomCount += 1
                self.room.append(Room(r1,r2,c1,c2))
                for i in range(r1,r2):
                    for j in range(c1,c2):
                        self.map[i,j] = 1
                        
    def isValidRoom(self,r1,r2,c1,c2):
        #检测有无覆盖
        for i in range(r1,r2):
            for j in range(c1,c2):
                if self.map[i,j] == 1:
                    return -1
        #检测有无紧贴房间
        for i in range(r1,r2):
            if self.map[i,c1-1] == 1 or self.map[i,c2+1] == 1:
                return 2
        for i in range(c1,c2):
            if self.map[r1-1,i] == 1 or self.map[r2+1,i] == 1:
                return 2
        return 0

看一下效果

生成墙壁

编写initTile()生成包围房间和通道的墙壁，直接贴代码

    def initTile(self):
        offset = [[-1,0],[0,-1],[1,0],[0,1],[-1,-1],[1,1],[1,-1],[-1,1]]
        for i in range(self.heigh):
            for j in range(self.width):
                if self.map[i,j] == 0:
                    tag = 0
                    for it in offset:
                        if i+it[0] >= self.heigh or j+it[1] >= self.width or i+it[0] < 0 or j+it[1] < 0:
                            continue
                        if self.map[i+it[0],j+it[1]] != 3 and self.map[i+it[0],j+it[1]] != 4:
                            tag += self.map[i+it[0],j+it[1]]
                    if tag:
                        self.map[i,j] = 3

效果

生成门口

随机选取房间的一个外围点当做房门，思路是在房间的长宽内随机两个数作为偏移量，预定义好四个方向的覆盖模板对偏移量进行加权和偏置，在这里我编写房间的类，加进地图的属性列表里。

除此之外，房间连通的思路是：在所有房间列表中随机抽出两个房间，将这两个房间连通，再随机选一个房间加回原来的房间列表，直至最后列表里只剩下一个房间。那么现在先来生成房门，代码如下

class Room():
    def __init__(self,r1,r2,c1,c2):
        w = c2 - c1
        h = r2 - r1
        self.width = w
        self.height = h
        self.cx = c1 + ceil(w/2)
        self.cy = r1 + ceil(h/2)
        self.xStart = c1
        self.xEnd = c2 - 1
        self.yStart = r1
        self.yEnd = r2 - 1

    def randomTile(self):
        direction = random.randint(0,3)
        dir = [[0,1,-1,0],[1,0,0,-1],[1,0,0,self.height],[0,1,self.width,0]]
        x_off = random.randint(0,self.width-1)
        y_off = random.randint(0,self.height-1)
        x = self.xStart + x_off*dir[direction][0] + dir[direction][2]
        y = self.yStart + y_off*dir[direction][1] + dir[direction][3]
        if y == 0 or x == 0:
            return self.randomTile()
        else:
            return [y,x]
class Map:
    def initPath(self):
        #初始化门
        rm = self.room.copy()
        while len(rm) > 1:
            r1 = random.choice(rm)
            rm.remove(r1)
            r2 = random.choice(rm)
            rm.remove(r2)
            point0 = r1.randomTile()
            while point0[0] == self.heigh-1 or point0[1] == self.width-1:
                point0 = r1.randomTile()
            self.map[point0[0],point0[1]] = 2
            self.door.append(point0)
            self.breakTile(point0)
            point1 = r2.randomTile()
            while point1[0] == self.heigh-1 or point1[1] == self.width-1:
                point1 = r2.randomTile()
            self.map[point1[0],point1[1]] = 2
            self.breakTile(point1)
            self.door.append(point1)
            rn = random.randint(0,1)
            #a*算法寻找从point0到point1的路径
            #self.aStar(point0,point1)
            if rn == 0:
                rm.append(r1)
            else:
                rm.append(r2)
                
    def breakTile(self,p):
        # 打通堵住的周围的墙壁
        if self.map[p[0] - 1, p[1]] == 1 and self.map[p[0] + 1, p[1]] == 3:
            self.map[p[0] + 1, p[1]] = 2
        elif self.map[p[0], p[1] - 1] == 1 and self.map[p[0], p[1] + 1] == 3:
            self.map[p[0], p[1] + 1] = 2
        elif self.map[p[0] + 1, p[1]] == 1 and self.map[p[0] - 1, p[1]] == 3:
            self.map[p[0] - 1, p[1]] = 2
        elif self.map[p[0], p[1] + 1] == 1 and self.map[p[0], p[1] - 1] == 3:
            self.map[p[0], p[1] - 1] = 2

看下效果

生成通道

接着完善上述函数，在随机选取房门后，连接两个房门。

在这我选择的是A星算法，打通两个房门，直接上代码

    def aStar(self,p0,p1):
        open_list = []
        close_list = []
        offset = [[-1,0],[0,-1],[1,0],[0,1]]
        f = h = abs(p0[0] - p1[0]) * 10 + abs(p0[1] - p1[1]) * 10
        g = 0

        def isInClose(p):
            for it in close_list:
                if it.value[3] == p:
                    return True
            return False
        def isInOpen(p):
            for it in open_list:
                if it.value[3] == p:
                    return True
            return False
        def findFather(p):
            for it in close_list:
                if it.value[3] == p:
                    return it.value[4]
  http://www.cppcns.com          return [-1,-1]
        def findInOpen(p):
            for it in open_list:
                if it.value[3] == p:
                    return it
            return None

        open_list.append(Node([f,g,h,p0,[-1,-1]]))
        while open_list:
            #for it in open_list:
            #    print(it.value)
            open_list.sort(key=(lambda x:x.value[0]))
            f_min = open_list[0]
            close_list.append(f_min)
            open_list.remove(f_min)
            for it in offset:
                p2 = [f_min.value[3][0]+it[0], f_min.value[3][1]+it[1]]
                if p2[0] == p1[0] and p2[1] == p1[1]:
                    #找到
                    close_list.append(Node([f,g,h,p2,f_min]))
                    p_father = f_min.value[3]
                    while True:
                        self.map[p_father[0],p_father[1]] = 2
                        p_father = findFather(p_father)
                        if p_father[0] == -1:
                            break
                    self.map[p0[0], p0[1]] = 4
                    return
                if p2[0] < 0 or p2[0] >= self.heigh or p2[1] < 0 or p2[1] >= self.width:
                    continue
                if (self.map[p2[0],p2[1]] != 0 and self.map[p2[0],p2[1]] != 2 and self.map[p2[0],p2[1]] != 4) or isInClose(p2):
                    continue
                h = abs(p2[0] - p1[0]) * 10 + abs(p2[1] - p1[1]) * 10
                g = f_min.value[1] + 10
                f = h + g
                if not isInOpen(p2):
                    open_list.append(Node([f,g,h,p2,f_min.value[3]]))
                else:
                    #比较最小的G 值
                    temp = findInOpen(p2)
                    if g < temp.value[1]:
                        open_lis编程客栈t.remove(temp)
                        open_list.append(Node([f,g,h,p2,f_min.value[3]]))

效果

这样，一个随机房间的地牢就已经生成，贴上完整代码

import random
import numpy as np
from math import ceil

class Node():
    def __init__(self, val=None):
        if val is None:
            val = [0, 0, 0, [-1, -1], [-1, -1]]
        self.value = val

class Room():
    def __init__(self,r1,r2,c1,c2):
        w = c2 - c1
        h = r2 - r1
        self.width = w
        self.height = h
        self.cx = c1 + ceil(w/2)
        self.cy = r1 + ceil(h/2)
        self.xStart = c1
        self.xEnd = c2 - 1
        self.yStart = r1
        self.yEnd = r2 - 1

    def info(self):
        print('r1 c1 r2 c2:  ',self.yStart,self.xStart,self.yEnd,self.xEnd)
        print('cx    cy:     ',self.cx,self.cy)
        print('width height: ',self.width,self.height)

    def randomTile(self):
        direction = random.randint(0,3)
        dir = [[0,1,-1,0],[1,0,0,-1],[1,0,0,self.height],[0,1,self.width,0]]
        x_off = random.randint(0,self.width-1)
        y_off = random.randint(0,self.height-1)
        x = self.xStart + x_off*dir[direction][0] + dir[direction][2]
        y = self.yStart + y_off*dir[direction][1] + dir[direction][3]
        if y == 0 or x == 0:
            return self.randomTile()
        else:
            return [y,x]

class Map:
    de编程客栈f __init__(self):
        self.width = 30
        self.heigh = 30
        self.level = 1
        self.roomNum = 5
        #0 is null, 1 is room, 2 is path, 3 is wall, 4 is door, 5 is up stair, 6 is downstair
        self.map = np.zeros((self.width,self.heigh))
        self.roomMin = 3
        self.roomMax = 11
        self.room = []
        self.door = []

        self.initRoom()
        self.initTile()
        self.initPath()
        #self.initTile()
        #self.initDoor()

    def initRoom(self):
        count = 0
        roomCount = 1
        while True:
            count += 1
  rWypqg          if count > 300:
                break
            if roomCount > self.roomNum:
                break
            x = random.randint(1,self.width-1)
            y = random.randint(1,self.heigh-1)
            wd = random.randint(self.roomMin,self.roomMax)
            if wd % 2 == 0:
                wd += 1
            ht = random.randint(self.roomMin, self.roomMax)
            if ht % 2 == 0:
                ht += 1
            r1 = ceil(y - ht/2)
            r2 = ceil(y + ht/2)
            c1 = ceil(x - wd/2)
            c2 = ceil(x + wd/2)
            if r1 < 1:
                r1 = 1
            if r2 >= self.heigh - 1:
                r2 = self.heigh - 2
            if c1 < 1:
                c1 = 1
            if c2 >= self.width - 1:
                c2 = self.width - 2
            w = c2 - c1 + 1
            h = r2 - r1 + 1
            if w == 0:
                continue
            if h == 0:
                continue
            if h / w >= 3 or w / h >= 3:
                continue
            judge = self.isValidRoom(r1,r2,c1,c2)
            if judge == 0:
                roomCount += 1
                self.room.append(Room(r1,r2,c1,c2))
                for i in range(r1,r2):
                    for j in range(c1,c2):
                        self.map[i,j] = 1

    def initPath(self):
        #初始化门
        rm = self.room.copy()
        while len(rm) > 1:
            r1 = random.choice(rm)
            rm.remove(r1)
            r2 = random.choice(rm)
            rm.remove(r2)
            point0 = r1.randomTile()
            while point0[0] == self.heigh-1 or point0[1] == self.width-1:
                point0 = r1.randomTile()
            self.map[point0[0],point0[1]] = 2
            self.door.append(point0)
            self.breakTile(point0)
            point1 = r2.randomTile()
            while point1[0] == self.heigh-1 or point1[1] == self.width-1:
                point1 = r2.randomTile()
            self.map[point1[0],point1[1]] = 2
            self.breakTile(point1)
            self.door.append(point1)
            rn = random.randint(0,1)
            #a*算法寻找从point0到point1的路径
            self.aStar(point0,point1)
            if rn == 0:
                rm.append(r1)
            else:
                rm.append(r2)

    def initDoor(self):
        for it in self.door:
            self.map[it[0],it[1]] = 4

    def breakTile(self,p):
        # 打通堵住的周围的墙壁
        if self.map[p[0] - 1, p[1]] == 1 and self.map[p[0] + 1, p[1]] == 3:
            self.map[p[0] + 1, p[1]] = 2
        elif self.map[p[0], p[1] - 1] == 1 and self.map[p[0], p[1] + 1] == 3:
            self.map[p[0], p[1] + 1] = 2
        elif self.map[p[0] + 1, p[1]] == 1 and self.map[p[0] - 1, p[1]] == 3:
            self.map[p[0] - 1, p[1]] = 2
        elif self.map[p[0], p[1] + 1] == 1 and self.map[p[0], p[1] - 1] == 3:
            self.map[p[0], p[1] - 1] = 2

    def initTile(self):
        offset = [[-1,0],[0,-1],[1,0],[0,1],[-1,-1],[1,1],[1,-1],[-1,1]]
        for i in range(self.heigh):
            for j in range(self.width):
                if self.map[i,j] == 0:
                    tag = 0
                    for it in offset:
                        if i+it[0] >= self.heigh or j+it[1] >= self.width or i+it[0] < 0 or j+it[1] < 0:
                            continue
                        if self.map[i+it[0],j+it[1]] != 3 and self.map[i+it[0],j+it[1]] != 4:
                            tag += self.map[i+it[0],j+it[1]]
                    if tag:
                        self.map[i,j] = 3

    def isValidRoom(self,r1,r2,c1,c2):
        #检测有无覆盖
        for i in range(r1,r2):
            for j in range(c1,c2):
                if self.map[i,j] == 1:
                    return -1
        #检测有无紧贴房间
        for i in range(r1,r2):
            if self.map[i,c1-1] == 1 or self.map[i,c2+1] == 1:
                return 2
        for i in range(c1,c2):
            if self.map[r1-1,i] == 1 or self.map[r2+1,i] == 1:
                return 2
        return 0

    def aStar(self,p0,p1):
        open_list = []
        close_list = []
        offset = [[-1,0],[0,-1],[1,0],[0,1]]
        f = h = abs(p0[0] - p1[0]) * 10 + abs(p0[1] - p1[1]) * 10
        g = 0

        def isInClose(p):
            for it in close_list:
                if it.value[3] == p:
                    return True
            return False
        def isInOpen(p):
            for it in open_list:
                if it.value[3] == p:
                    return True
            return False
        def findFather(p):
            for it in close_list:
                if it.value[3] == p:
                    return it.value[4]
            return [-1,-1]
        def findInOpen(p):
            for it in open_list:
                if it.value[3] == p:
                    return it
            return None

        open_list.append(Node([f,g,h,p0,[-1,-1]]))
        while open_list:
            #for it in open_list:
            #    print(it.value)
            open_list.sort(key=(lambda x:x.value[0]))
            f_min = open_list[0]
            close_list.append(f_min)
            open_list.remove(f_min)
            for it in offset:
                p2 = [f_min.value[3][0]+it[0], f_min.value[3][1]+it[1]]
                if p2[0] == p1[0] and p2[1] == p1[1]:
编程客栈                    #找到
                    close_list.append(Node([f,g,h,p2,f_min]))
                    p_father = f_min.value[3]
                    while True:
                        self.map[p_father[0],p_father[1]] = 2
                        p_father = findFather(p_father)
                        if p_father[0] == -1:
                            break
                    self.map[p0[0], p0[1]] = 4
                    return
                if p2[0] < 0 or p2[0] >= self.heigh or p2[1] < 0 or p2[1] >= self.width:
                    continue
                if (self.map[p2[0],p2[1]] != 0 and self.map[p2[0],p2[1]] != 2 and self.map[p2[0],p2[1]] != 4) or isInClose(p2):
                    continue
                h = abs(p2[0] - p1[0]) * 10 + abs(p2[1] - p1[1]) * 10
                g = f_min.value[1] + 10
                f = h + g
                if not isInOpen(p2):
                    open_list.append(Node([f,g,h,p2,f_min.value[3]]))
                else:
                    #比较最小的G 值
                    temp = findInOpen(p2)
                    if g < temp.value[1]:
                        open_list.remove(temp)
                        open_list.append(Node([f,g,h,p2,f_min.value[3]]))

    def printMap(self):
        for i in range(self.heigh):
            for j in range(self.width):
                print(int(self.map[i,j]),end='')
            print()

    def printRoom(self):
        for r in self.room:
            r.info()

if __name__ == '__main__':
    map = Map()
    map.printMap()

可视化一下

总结 

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