pgzrun 拼图游戏制作过程详解（4，5）

4. 将小拼图位置随机打乱

建立swap_Square(i，j)坐标互换函数
将Gird[i]和Gird[j] 中的小拼图信息进行互换

python">def swap_Square(i,j):  # 两个拼图的位置互换
    temp_pos=Gird[i].pos
    Gird[i].pos=Gird[j].pos
    Gird[j].pos=temp_pos

导入随机数模块

python">import random

随机抽取10组小拼图将其坐标进行互换

python">for k in range(10):  # 随机抽取10组拼图 进行位置互换
    i=random.randint(0,23)
    j=random.randint(0,23)
    swap_Square(i, j)

执行效果如下图所示：

5. 实现拼图交换：

设定变量click_time来储存鼠标点击次数，clickID_1、clickID_2分别来储存两个要互换的小拼图的索引。

python">click_time=0
clickID_1=clickID_2=-1

监听鼠标点击事件，遍历所有小拼图，获取被点击小拼图的索引。

python">def on_mouse_down(pos,button): # 当鼠标被点击时
    global click_time ,clickID_1 , clickID_2
    for i in range(24):
        if Gird[i].collidepoint(pos): # 拼图对象被点击
            break

根据点击次数的奇偶来确定两个要互换的小拼图的索引，实现小块之间的交换。

python">    if click_time%2==0 :
        clickID_1=i
    else:
        clickID_2=i
        swap_Square(clickID_1,clickID_2)

鼠标每次点击将变量click_time增加1

python">click_time += 1

完整代码如下：

python">import pgzrun
import random

TITLE="pgzrun 拼图游戏"
Square_size=125
WIDTH=Square_size*4
HEIGHT=Square_size*6

click_time=0
clickID_1=clickID_2=-1

Squares=[Actor("girl_01"),Actor("girl_02"),Actor("girl_03"),Actor("girl_04")
        ,Actor("girl_05"),Actor("girl_06"),Actor("girl_07"),Actor("girl_08")
        ,Actor("girl_09"),Actor("girl_10"),Actor("girl_11"),Actor("girl_12")
        ,Actor("girl_13"),Actor("girl_14"),Actor("girl_15"),Actor("girl_16")
        ,Actor("girl_17"),Actor("girl_18"),Actor("girl_19"),Actor("girl_20")
        ,Actor("girl_21"),Actor("girl_22"),Actor("girl_23"),Actor("girl_24")
         ]
Gird=[]
for i in range(6):
    for j in range(4):
        Square=Squares[i*4+j]
        Square.left=Square_size*j
        Square.top=Square_size*i
        Gird.append(Square)

def swap_Square(i,j):  # 两个拼图的位置互换
    temp_pos=Gird[i].pos
    Gird[i].pos=Gird[j].pos
    Gird[j].pos=temp_pos

for k in range(10):  # 随机抽取10组拼图 进行位置互换
    i=random.randint(0,23)
    j=random.randint(0,23)
    swap_Square(i, j)

def on_mouse_down(pos,button): # 当鼠标被点击时
    global click_time ,clickID_1 , clickID_2
    for i in range(24):
        if Gird[i].collidepoint(pos): # 拼图对象被点击
            break

    if click_time%2==0 :
        clickID_1=i
    else:
        clickID_2=i
        swap_Square(clickID_1,clickID_2)
    click_time += 1

def draw():
    screen.clear()
    for Square in Gird:
        Square.draw()

def update():
    pass

pgzrun.go()

pgzrun拼图游戏素材包下载