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  • python开发_tkinter_小球完全弹性碰撞游戏

    python开发_tkinter_小球完全弹性碰撞游戏

     

    完成这个小球的完全弹性碰撞游戏灵感来自于:

    下面是我花了一周下班时间所编写的一个小球完全弹性碰撞游戏:

    游戏初始化状态:

    最下面的游标和修改小球的移动速度

    ===================================================

    源码部分:

    ===================================================

    复制代码
      1 #python tkinter
      2 #python version 3.3.2
      3 
      4 from tkinter import *
      5 
      6 '''
      7     判断
      8     两个小球
      9     {
     10         圆心:A(x1,y1)  半径:r  X轴速度:Vax  Y轴速度:Vay
     11         圆心:B(x2,y2)  半径:R  X轴速度:Vbx  Y轴速度:Vby
     12     }
     13     碰撞的条件是:
     14     1.两个小球的圆心距离不大于两小球半径之和(r+R),即:
     15     {
     16         (x2 - x1)^2 + (y2 - y1)^2 <= (r + R)^2
     17     }
     18     2.小球碰撞后,两小球的数度交换,即:
     19     {
     20         tempVax = Vax
     21         tempVay = Vay
     22         Vax = Vbx
     23         Vay = Vby
     24         Vbx = tempVax
     25         Vby = tempVay
     26         或:
     27         Vax = Vax + Vbx
     28         Vbx = Vax - Vbx
     29         Vax = Vax - Vbx
     30         Vay = Vay + Vby
     31         Vby = Vay - Vby
     32         Vay = Vay - Vby
     33     }
     34 
     35     游戏规则:
     36     五小球在画布中移动,他们之间会产生碰撞,当然小球和上下左右都会产生碰撞
     37     碰撞后,小球会改变方向返回
     38     而最下面的游标则用于调节小球的移动速度,游标的范围是[-100, 100]
     39     
     40     缺陷或BUG:
     41     1.在修改游标数据从而改变小球移动速度的时候,小球移动的距离得不到及时的更新
     42     导致小球可能会逃离画布
     43     2.小球在运动的过程中,有时候也有可能逃离画布
     44 
     45     总结:
     46     完成这个游戏,花了一个星期的下班时间。在这个过程中不仅回去学习了高中的数学知识,
     47     物理知识,很多东西都忘得差不多了,不过很快又学返回来了。
     48     游戏其实很多就是数学问题。
     49     
     50     游戏中还存在缺陷或BUG,希望志同道合者可以共同完善。
     51 '''
     52 
     53 __author__ = {'author' : 'Hongten',
     54               'Email' : 'hongtenzone@foxmail.com',
     55               'Blog' : 'http://www.cnblogs.com/hongten/',
     56               'Created' : '2013-09-28',
     57               'Version' : '1.0'}
     58 
     59 class Pong(Frame):
     60     def createWidgets(self):
     61         ## 画布
     62         self.draw = Canvas(self, width="5i", height="5i", bg='white')
     63 
     64         ## 游标(控制小球移动速度,范围:[-100, 100])
     65         self.speed = Scale(self, orient=HORIZONTAL, label="ball speed",
     66                            from_=-100, to=100)
     67 
     68         self.speed.pack(side=BOTTOM, fill=X)
     69 
     70         #小球碰撞墙壁的范围
     71         self.scaling_right = 4.8
     72         self.scaling_left = 0.2
     73         #小球直径
     74         self.ball_d = 0.4
     75         #游标度数
     76         self.scale_value = self.speed.get()
     77         #放缩率
     78         self.scaling = 100.0
     79 
     80         #存放小球数组
     81         self.balls = []
     82         #存放小球x坐标数组
     83         self.ball_x = []
     84         #存放小球y坐标数组
     85         self.ball_y = []
     86         #存放小球x轴方向速度数组
     87         self.ball_v_x = []
     88         #存放小球y轴方向速度数组
     89         self.ball_v_y = []
     90 
     91         # 五个小球
     92         self.ball = self.draw.create_oval("0.10i", "0.10i", "0.50i", "0.50i",
     93                                           fill="red")
     94         self.second_ball = self.draw.create_oval("0.70i", "0.70i", "1.10i", "1.10i",
     95                                                  fill='black')
     96         self.three_ball = self.draw.create_oval("1.30i", "1.30i", "1.70i", "1.70i",
     97                                                  fill='brown')
     98         self.four_ball = self.draw.create_oval("2.0i", "2.0i", "2.40i", "2.40i",
     99                                                  fill='green')
    100         self.five_ball = self.draw.create_oval("3.0i", "3.0i", "3.40i", "3.40i",
    101                                                  fill='gray')
    102 
    103         #把五个小球放入数组
    104         self.balls.append(self.ball)
    105         self.balls.append(self.second_ball)
    106         self.balls.append(self.three_ball)
    107         self.balls.append(self.four_ball)
    108         self.balls.append(self.five_ball)
    109 
    110         #第一个小球,即self.ball的圆心坐标(self.x, self.y),这里进行了放缩,目的是为了
    111         #在小球移动的过程中更加流畅
    112         self.x = 0.3        
    113         self.y = 0.3
    114         #第一个小球的速度方向
    115         self.velocity_x = -0.2
    116         self.velocity_y = 0.5
    117 
    118         self.second_ball_x = 0.9
    119         self.second_ball_y = 0.9
    120         self.second_ball_v_x = 0.4
    121         self.second_ball_v_y = -0.5
    122 
    123         self.three_ball_x = 1.5
    124         self.three_ball_y = 1.5
    125         self.three_ball_v_x = -0.3
    126         self.three_ball_v_y = -0.5
    127 
    128         self.four_ball_x = 2.2
    129         self.four_ball_y = 2.2
    130         self.four_ball_v_x = 0.1
    131         self.four_ball_v_y = -0.5
    132 
    133         self.five_ball_x = 3.2
    134         self.five_ball_y = 3.2
    135         self.five_ball_v_x = 0.3
    136         self.five_ball_v_y = 0.5
    137 
    138         
    139         #更新小球的坐标
    140         self.update_ball_x_y()
    141         self.draw.pack(side=LEFT)
    142 
    143     def update_ball_x_y(self, *args):
    144         '''更新小球的坐标,即把各个小球的圆心坐标信息以及速度信息存放到数组中,
    145            便于在后面循环遍历的时候使用。'''
    146         #第一个小球信息
    147         self.ball_x.append(self.x)
    148         self.ball_y.append(self.y)
    149         self.ball_v_x.append(self.velocity_x)
    150         self.ball_v_y.append(self.velocity_y)
    151 
    152         self.ball_x.append(self.second_ball_x)
    153         self.ball_y.append(self.second_ball_y)
    154         self.ball_v_x.append(self.second_ball_v_x)
    155         self.ball_v_y.append(self.second_ball_v_y)
    156 
    157         self.ball_x.append(self.three_ball_x)
    158         self.ball_y.append(self.three_ball_y)
    159         self.ball_v_x.append(self.three_ball_v_x)
    160         self.ball_v_y.append(self.three_ball_v_y)
    161 
    162         self.ball_x.append(self.four_ball_x)
    163         self.ball_y.append(self.four_ball_y)
    164         self.ball_v_x.append(self.four_ball_v_x)
    165         self.ball_v_y.append(self.four_ball_v_y)
    166 
    167         self.ball_x.append(self.five_ball_x)
    168         self.ball_y.append(self.five_ball_y)
    169         self.ball_v_x.append(self.five_ball_v_x)
    170         self.ball_v_y.append(self.five_ball_v_y)
    171     
    172     def update_ball_velocity(self, index, *args):
    173         '''更新各个小球速度信息,即小球碰撞到四周和另外的小球索要更新的速度信息'''
    174         #游标值
    175         self.scale_value = self.speed.get()
    176         #碰撞墙壁
    177         if (self.ball_x[index] > self.scaling_right) or (self.ball_x[index] < self.scaling_left):
    178             self.ball_v_x[index] = -1.0 * self.ball_v_x[index]
    179         if (self.ball_y[index] > self.scaling_right) or (self.ball_y[index] < self.scaling_left):
    180             self.ball_v_y[index] = -1.0 *  self.ball_v_y[index]
    181 
    182         '''
    183         #TEST:
    184         for n in range(len(self.balls)):
    185             #print((self.ball_x[index] - self.ball_x[n])**2)
    186             #print(round((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2, 2))
    187             print(round((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2, 2) <= round(self.ball_d**2, 2))
    188         '''
    189         for n in range(len(self.balls)):
    190             #小球碰撞条件,即:(x2 - x1)^2 + (y2 - y1)^2 <= (r + R)^2
    191             if (round((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2, 2) <= round(self.ball_d**2, 2)):
    192                 #两小球速度交换
    193                 temp_vx = self.ball_v_x[index]
    194                 temp_vy = self.ball_v_y[index]
    195                 self.ball_v_x[index] = self.ball_v_x[n]
    196                 self.ball_v_y[index] = self.ball_v_y[n]
    197                 self.ball_v_x[n] = temp_vx
    198                 self.ball_v_y[n] = temp_vy
    199         #print(self.ball_v_x, self.ball_v_y)
    200                
    201         '''
    202         #WRONG:
    203         for n in range(len(self.balls)):            
    204             if (((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2) <= self.ball_d**2):
    205                 #两小球速度交换
    206                 self.ball_v_x[index] = self.ball_v_x[index] + self.ball_v_x[n]
    207                 self.ball_v_x[n] = self.ball_v_x[0] - self.ball_v_x[n]
    208                 self.ball_v_x[index] = self.ball_v_x[index] - self.ball_v_x[n]
    209                 self.ball_v_y[index] = self.ball_v_y[index] + self.ball_v_y[n]
    210                 self.ball_v_y[n] = self.ball_v_y[index] - self.ball_v_y[n]
    211                 self.ball_v_y[index] = self.ball_v_y[index] - self.ball_v_y[n]
    212         print(self.ball_v_x, self.ball_v_y)
    213         '''
    214         
    215     def get_ball_deltax(self, index, *args):
    216         '''获取小球X轴坐标移动距离并且更新小球的圆心X坐标,返回X轴所需移动距离'''
    217         deltax = (self.ball_v_x[index] * self.scale_value / self.scaling)
    218         self.ball_x[index] = self.ball_x[index] + deltax
    219         return deltax
    220 
    221     def get_ball_deltay(self, index, *args):
    222         '''获取小球Y轴坐标移动距离并且更新小球的圆心Y坐标,返回Y轴所需移动距离'''
    223         deltay = (self.ball_v_y[index] * self.scale_value / self.scaling)
    224         self.ball_y[index] = self.ball_y[index] + deltay
    225         return deltay
    226     
    227     def moveBall(self, *args):
    228         '''移动第一个小球,编号为:0,这是根据数组:self.balls确定的。'''
    229         self.update_ball_velocity(0)       
    230         deltax = self.get_ball_deltax(0)
    231         deltay = self.get_ball_deltay(0)
    232         #小球移动
    233         self.draw.move(self.ball,  "%ri" % deltax, "%ri" % deltay)
    234         self.after(10, self.moveBall)
    235 
    236     def move_second_ball(self, *args):
    237         self.update_ball_velocity(1)       
    238         deltax = self.get_ball_deltax(1)
    239         deltay = self.get_ball_deltay(1)        
    240         self.draw.move(self.second_ball,  "%ri" % deltax, "%ri" % deltay)
    241         self.after(10, self.move_second_ball)
    242 
    243 
    244     def move_three_ball(self, *args):
    245         self.update_ball_velocity(2)       
    246         deltax = self.get_ball_deltax(2)
    247         deltay = self.get_ball_deltay(2)
    248         self.draw.move(self.three_ball,  "%ri" % deltax, "%ri" % deltay)
    249         self.after(10, self.move_three_ball)
    250 
    251     def move_four_ball(self, *args):
    252         self.update_ball_velocity(3)       
    253         deltax = self.get_ball_deltax(3)
    254         deltay = self.get_ball_deltay(3)
    255         self.draw.move(self.four_ball,  "%ri" % deltax, "%ri" % deltay)
    256         self.after(10, self.move_four_ball)
    257 
    258     def move_five_ball(self, *args):
    259         self.update_ball_velocity(4)       
    260         deltax = self.get_ball_deltax(4)
    261         deltay = self.get_ball_deltay(4)
    262         self.draw.move(self.five_ball,  "%ri" % deltax, "%ri" % deltay)
    263         self.after(10, self.move_five_ball)
    264 
    265             
    266     def __init__(self, master=None):
    267         '''初始化函数'''
    268         Frame.__init__(self, master)
    269         Pack.config(self)
    270         self.createWidgets()
    271         self.after(10, self.moveBall)
    272         self.after(10, self.move_three_ball)
    273         self.after(10, self.move_four_ball)
    274         self.after(10, self.move_five_ball)
    275         self.after(10, self.move_second_ball)
    276         
    277         
    278 game = Pong()
    279 
    280 game.mainloop()
    复制代码

    源码下载:http://files.cnblogs.com/liuzhi/python_tkinter_pong.1.0.zip

    ===================================================

    第二个版本 version.1.1:  Edit by Hongten 2013-09-28 17:40

    ===================================================

    修改记录:
    1.调整画布大小
    2.调整了小球的半径,以及小球的速度初始值,小球初始圆心坐标
    3.游标的范围修改为:[-200, 200]
    这些修改主要是针对上面的缺陷而进行的。

    优点:
    1.小球移动的过程更直观
    2.小球的移动速度变小,但是可以根据游标来修改小球移动速度
    3.界面比之前更加友好

    运行效果:

    ===================================================

    复制代码
      1 #python tkinter
      2 #python version 3.3.2
      3 
      4 from tkinter import *
      5 
      6 '''
      7     判断
      8     两个小球
      9     {
     10         圆心:A(x1,y1)  半径:r  X轴速度:Vax  Y轴速度:Vay
     11         圆心:B(x2,y2)  半径:R  X轴速度:Vbx  Y轴速度:Vby
     12     }
     13     碰撞的条件是:
     14     1.两个小球的圆心距离不大于两小球半径之和(r+R),即:
     15     {
     16         (x2 - x1)^2 + (y2 - y1)^2 <= (r + R)^2
     17     }
     18     2.小球碰撞后,两小球的数度交换,即:
     19     {
     20         tempVax = Vax
     21         tempVay = Vay
     22         Vax = Vbx
     23         Vay = Vby
     24         Vbx = tempVax
     25         Vby = tempVay
     26         或:
     27         Vax = Vax + Vbx
     28         Vbx = Vax - Vbx
     29         Vax = Vax - Vbx
     30         Vay = Vay + Vby
     31         Vby = Vay - Vby
     32         Vay = Vay - Vby
     33     }
     34 
     35     游戏规则:
     36     五小球在画布中移动,他们之间会产生碰撞,当然小球和上下左右都会产生碰撞
     37     碰撞后,小球会改变方向返回
     38     而最下面的游标则用于调节小球的移动速度,游标的范围是[-100, 100]
     39     
     40     缺陷或BUG:
     41     1.在修改游标数据从而改变小球移动速度的时候,小球移动的距离得不到及时的更新
     42     导致小球可能会逃离画布
     43     2.小球在运动的过程中,有时候也有可能逃离画布
     44 
     45     总结:
     46     完成这个游戏,花了一个星期的下班时间。在这个过程中不仅回去学习了高中的数学知识,
     47     物理知识,很多东西都忘得差不多了,不过很快又学返回来了。
     48     游戏其实很多就是数学问题。
     49     
     50     游戏中还存在缺陷或BUG,希望志同道合者可以共同完善。
     51 
     52     修改记录:
     53     1.调整画布大小
     54     2.调整了小球的半径,以及小球的速度初始值,小球初始圆心坐标
     55     3.游标的范围修改为:[-200, 200]
     56     这些修改主要是针对上面的缺陷而进行的。
     57 
     58     优点:
     59     1.小球移动的过程更直观
     60     2.小球的移动速度变小,但是可以根据游标来修改小球移动速度
     61     3.界面比之前更加友好
     62 '''
     63 
     64 __author__ = {'author' : 'Hongten',
     65               'Email' : 'hongtenzone@foxmail.com',
     66               'Blog' : 'http://www.cnblogs.com/hongten/',
     67               'Created' : '2013-09-28',
     68               'Version' : '1.1'}
     69 
     70 class Pong(Frame):
     71     def createWidgets(self):
     72          #放缩率
     73         self.scaling = 100.0
     74         #画布比例
     75         self.canvas_width = 10
     76         self.canvas_height = 5.6
     77         ## 画布
     78         self.draw = Canvas(self, width=(self.canvas_width * self.scaling),
     79                            height=(self.canvas_height * self.scaling),
     80                            bg='white')
     81 
     82         ## 游标(控制小球移动速度,范围:[-100, 100])
     83         self.speed = Scale(self, orient=HORIZONTAL, label="ball speed",
     84                            from_=-200, to=200)
     85         
     86         self.speed.pack(side=BOTTOM, fill=X)
     87 
     88         #小球直径
     89         self.ball_d = 1.0
     90         #小球碰撞墙壁的范围
     91         self.scaling_left = round(self.ball_d / 2, 1)
     92         self.scaling_right = self.canvas_width - self.scaling_left
     93         self.scaling_bottom = self.canvas_height - self.scaling_left
     94         self.scaling_top = self.scaling_left
     95        
     96         #游标度数
     97         self.scale_value = self.speed.get() * 0.1
     98        
     99         #存放小球数组
    100         self.balls = []
    101         #存放小球x坐标数组
    102         self.ball_x = []
    103         #存放小球y坐标数组
    104         self.ball_y = []
    105         #存放小球x轴方向速度数组
    106         self.ball_v_x = []
    107         #存放小球y轴方向速度数组
    108         self.ball_v_y = []
    109 
    110         # 五个小球
    111         self.ball = self.draw.create_oval("0.60i", "0.60i", "1.60i", "1.60i",
    112                                           fill="red")
    113         self.second_ball = self.draw.create_oval("2.0i", "2.0i", "3.0i", "3.0i",
    114                                                  fill='black')
    115         self.three_ball = self.draw.create_oval("4.0i", "4.0i", "5.0i", "5.0i",
    116                                                  fill='brown')
    117         self.four_ball = self.draw.create_oval("6.0i", "2.0i", "7.0i", "3.0i",
    118                                                  fill='green')
    119         self.five_ball = self.draw.create_oval("8.0i", "3.0i", "9.0i", "4.0i",
    120                                                  fill='gray')
    121 
    122         #把五个小球放入数组
    123         self.balls.append(self.ball)
    124         self.balls.append(self.second_ball)
    125         self.balls.append(self.three_ball)
    126         self.balls.append(self.four_ball)
    127         self.balls.append(self.five_ball)
    128 
    129         #第一个小球,即self.ball的圆心坐标(self.x, self.y),这里进行了放缩,目的是为了
    130         #在小球移动的过程中更加流畅
    131         self.x = 1.1        
    132         self.y = 1.1
    133         #第一个小球的速度方向
    134         self.velocity_x = -0.2
    135         self.velocity_y = 0.1
    136 
    137         self.second_ball_x = 2.5
    138         self.second_ball_y = 2.5
    139         self.second_ball_v_x = 0.1
    140         self.second_ball_v_y = -0.2
    141 
    142         self.three_ball_x = 4.5
    143         self.three_ball_y = 4.5
    144         self.three_ball_v_x = -0.1
    145         self.three_ball_v_y = -0.2
    146 
    147         self.four_ball_x = 6.5
    148         self.four_ball_y = 2.5
    149         self.four_ball_v_x = 0.1
    150         self.four_ball_v_y = -0.2
    151 
    152         self.five_ball_x = 8.5
    153         self.five_ball_y = 3.5
    154         self.five_ball_v_x = 0.1
    155         self.five_ball_v_y = 0.2
    156 
    157         
    158         #更新小球的坐标
    159         self.update_ball_x_y()
    160         self.draw.pack(side=LEFT)
    161 
    162     def update_ball_x_y(self, *args):
    163         '''更新小球的坐标,即把各个小球的圆心坐标信息以及速度信息存放到数组中,
    164            便于在后面循环遍历的时候使用。'''
    165         #第一个小球信息
    166         self.ball_x.append(self.x)
    167         self.ball_y.append(self.y)
    168         self.ball_v_x.append(self.velocity_x)
    169         self.ball_v_y.append(self.velocity_y)
    170 
    171         self.ball_x.append(self.second_ball_x)
    172         self.ball_y.append(self.second_ball_y)
    173         self.ball_v_x.append(self.second_ball_v_x)
    174         self.ball_v_y.append(self.second_ball_v_y)
    175 
    176         self.ball_x.append(self.three_ball_x)
    177         self.ball_y.append(self.three_ball_y)
    178         self.ball_v_x.append(self.three_ball_v_x)
    179         self.ball_v_y.append(self.three_ball_v_y)
    180 
    181         self.ball_x.append(self.four_ball_x)
    182         self.ball_y.append(self.four_ball_y)
    183         self.ball_v_x.append(self.four_ball_v_x)
    184         self.ball_v_y.append(self.four_ball_v_y)
    185 
    186         self.ball_x.append(self.five_ball_x)
    187         self.ball_y.append(self.five_ball_y)
    188         self.ball_v_x.append(self.five_ball_v_x)
    189         self.ball_v_y.append(self.five_ball_v_y)
    190     
    191     def update_ball_velocity(self, index, *args):
    192         '''更新各个小球速度信息,即小球碰撞到四周和另外的小球索要更新的速度信息'''
    193         #游标值
    194         self.scale_value = self.speed.get() * 0.1
    195         #碰撞墙壁
    196         if (self.ball_x[index] > self.scaling_right) or (self.ball_x[index] < self.scaling_left):
    197             self.ball_v_x[index] = -1.0 * self.ball_v_x[index]
    198         if (self.ball_y[index] > self.scaling_bottom) or (self.ball_y[index] < self.scaling_top):
    199             self.ball_v_y[index] = -1.0 *  self.ball_v_y[index]
    200 
    201         '''
    202         #TEST:
    203         for n in range(len(self.balls)):
    204             #print((self.ball_x[index] - self.ball_x[n])**2)
    205             #print(round((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2, 2))
    206             print(round((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2, 2) <= round(self.ball_d**2, 2))
    207         '''
    208         for n in range(len(self.balls)):
    209             #小球碰撞条件,即:(x2 - x1)^2 + (y2 - y1)^2 <= (r + R)^2
    210             if (round((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2, 2) <= round(self.ball_d**2, 2)):
    211                 #两小球速度交换
    212                 temp_vx = self.ball_v_x[index]
    213                 temp_vy = self.ball_v_y[index]
    214                 self.ball_v_x[index] = self.ball_v_x[n]
    215                 self.ball_v_y[index] = self.ball_v_y[n]
    216                 self.ball_v_x[n] = temp_vx
    217                 self.ball_v_y[n] = temp_vy
    218         #print(self.ball_v_x, self.ball_v_y)
    219                
    220         '''
    221         #WRONG:
    222         for n in range(len(self.balls)):            
    223             if (((self.ball_x[index] - self.ball_x[n])**2 + (self.ball_y[index] - self.ball_y[n])**2) <= self.ball_d**2):
    224                 #两小球速度交换
    225                 self.ball_v_x[index] = self.ball_v_x[index] + self.ball_v_x[n]
    226                 self.ball_v_x[n] = self.ball_v_x[0] - self.ball_v_x[n]
    227                 self.ball_v_x[index] = self.ball_v_x[index] - self.ball_v_x[n]
    228                 self.ball_v_y[index] = self.ball_v_y[index] + self.ball_v_y[n]
    229                 self.ball_v_y[n] = self.ball_v_y[index] - self.ball_v_y[n]
    230                 self.ball_v_y[index] = self.ball_v_y[index] - self.ball_v_y[n]
    231         print(self.ball_v_x, self.ball_v_y)
    232         '''
    233         
    234     def get_ball_deltax(self, index, *args):
    235         '''获取小球X轴坐标移动距离并且更新小球的圆心X坐标,返回X轴所需移动距离'''
    236         deltax = (self.ball_v_x[index] * self.scale_value / self.scaling)
    237         self.ball_x[index] = self.ball_x[index] + deltax
    238         return deltax
    239 
    240     def get_ball_deltay(self, index, *args):
    241         '''获取小球Y轴坐标移动距离并且更新小球的圆心Y坐标,返回Y轴所需移动距离'''
    242         deltay = (self.ball_v_y[index] * self.scale_value / self.scaling)
    243         self.ball_y[index] = self.ball_y[index] + deltay
    244         return deltay
    245     
    246     def moveBall(self, *args):
    247         '''移动第一个小球,编号为:0,这是根据数组:self.balls确定的。'''
    248         self.update_ball_velocity(0)       
    249         deltax = self.get_ball_deltax(0)
    250         deltay = self.get_ball_deltay(0)
    251         #小球移动
    252         self.draw.move(self.ball,  "%ri" % deltax, "%ri" % deltay)
    253         self.after(10, self.moveBall)
    254 
    255     def move_second_ball(self, *args):
    256         self.update_ball_velocity(1)       
    257         deltax = self.get_ball_deltax(1)
    258         deltay = self.get_ball_deltay(1)        
    259         self.draw.move(self.second_ball,  "%ri" % deltax, "%ri" % deltay)
    260         self.after(10, self.move_second_ball)
    261 
    262 
    263     def move_three_ball(self, *args):
    264         self.update_ball_velocity(2)       
    265         deltax = self.get_ball_deltax(2)
    266         deltay = self.get_ball_deltay(2)
    267         self.draw.move(self.three_ball,  "%ri" % deltax, "%ri" % deltay)
    268         self.after(10, self.move_three_ball)
    269 
    270     def move_four_ball(self, *args):
    271         self.update_ball_velocity(3)       
    272         deltax = self.get_ball_deltax(3)
    273         deltay = self.get_ball_deltay(3)
    274         self.draw.move(self.four_ball,  "%ri" % deltax, "%ri" % deltay)
    275         self.after(10, self.move_four_ball)
    276 
    277     def move_five_ball(self, *args):
    278         self.update_ball_velocity(4)       
    279         deltax = self.get_ball_deltax(4)
    280         deltay = self.get_ball_deltay(4)
    281         self.draw.move(self.five_ball,  "%ri" % deltax, "%ri" % deltay)
    282         self.after(10, self.move_five_ball)
    283 
    284             
    285     def __init__(self, master=None):
    286         '''初始化函数'''
    287         Frame.__init__(self, master)
    288         Pack.config(self)
    289         self.createWidgets()
    290         self.after(10, self.moveBall)
    291         self.after(10, self.move_three_ball)
    292         self.after(10, self.move_four_ball)
    293         self.after(10, self.move_five_ball)
    294         self.after(10, self.move_second_ball)
    295         
    296         
    297 game = Pong()
    298 
    299 game.mainloop()
    复制代码

    源码下载:http://files.cnblogs.com/liuzhi/python_tkinter_pong.1.1.zip

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  • 原文地址:https://www.cnblogs.com/liuzhi/p/3975838.html
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