python+tkinter+canvas实现天降棒棒糖，生活甜甜蜜蜜

Posted 2021-06-29 dhjabc_1

python+tkinter+canvas实现天降棒棒糖，生活甜甜蜜蜜。

一、先看看效果吧。

直接开始介绍了吧。

二、准备资源图片

通过ps或者ppt软件把这个图片抠图干净，就会出来的效果好看些。

三、实现逻辑

（一）自定义棒棒糖类

class Ball:

    def __init__(self, canvas,root):
        self.canvas = canvas
        self.root = root
        self.image = Image.open('bbt.png').resize((30, 30))

    def create_ball(self):

        self.xpos = randint(50,self.root.winfo_width()-50)
        self.ypos = randint(-self.root.winfo_height(),0)
        self.vect = randint(1,3)

        self.tkimage = ImageTk.PhotoImage(self.image)
        self.canvas_obj = canvas.create_image(self.xpos, self.ypos, image=self.tkimage)


    def move_ball(self):
        # self.xpos += 1
        self.ypos += self.vect
        if self.ypos > self.root.winfo_height():
            self.xpos = randint(50, self.root.winfo_width() - 50)
            self.ypos = randint(-50, 0)
            self.vect = randint(1,3)
        self.tkimage = ImageTk.PhotoImage(self.image)
        self.canvas_obj = canvas.create_image(self.xpos, self.ypos, image=self.tkimage)

（二）随机生成棒棒糖实体

    balls = []
    num = 50
    for i in range(num):
        ball = Ball(canvas, tk)
        ball.create_ball()
        balls.append(ball)

（三）不断update位置信息

    move_balls()
    def move_balls():
    for ball in balls:
        ball.move_ball()
    canvas.after(20, move_balls)

（四）让窗体透明

def on_resize(evt):
    tk.configure(width=evt.width,height=evt.height)
    canvas.create_rectangle(0, 0, canvas.winfo_width(), canvas.winfo_height(), fill=TRANSCOLOUR, outline=TRANSCOLOUR)

四、完整代码

from tkinter import *
from random import *
import math
from PIL import Image,ImageTk

class Ball:

    def __init__(self, canvas,root):
        self.canvas = canvas
        self.root = root
        self.image = Image.open('bbt.png').resize((30, 30))

    def create_ball(self):

        self.xpos = randint(50,self.root.winfo_width()-50)
        self.ypos = randint(-self.root.winfo_height(),0)
        self.vect = randint(1,3)

        self.tkimage = ImageTk.PhotoImage(self.image)
        self.canvas_obj = canvas.create_image(self.xpos, self.ypos, image=self.tkimage)


    def move_ball(self):
        # self.xpos += 1
        self.ypos += self.vect
        if self.ypos > self.root.winfo_height():
            self.xpos = randint(50, self.root.winfo_width() - 50)
            self.ypos = randint(-50, 0)
            self.vect = randint(1,3)
        self.tkimage = ImageTk.PhotoImage(self.image)
        self.canvas_obj = canvas.create_image(self.xpos, self.ypos, image=self.tkimage)

def move_balls():
    for ball in balls:
        ball.move_ball()
    canvas.after(20, move_balls)


def on_resize(evt):
    tk.configure(width=evt.width,height=evt.height)
    canvas.create_rectangle(0, 0, canvas.winfo_width(), canvas.winfo_height(), fill=TRANSCOLOUR, outline=TRANSCOLOUR)
    # canvas.create_oval(240, 30, 330, 200,
    #                    outline='yellow',  # 边框颜色
    #                    fill='pink',  # 填充颜色
    #                    width=4  # 边框宽度
    #                    )
    print(canvas.winfo_width())


if __name__ == '__main__':

    TRANSCOLOUR = 'gray'

    tk = Tk()
    tk.geometry('800x600+300+100')
    tk.title('天降棒棒糖咯，生活甜甜蜜蜜咯！！！')
    tk.wm_attributes('-transparentcolor', TRANSCOLOUR)
    tk.wm_attributes("-topmost", 1)
    tk.bind('<Configure>', on_resize)
    # tk.overrideredirect(1)

    canvas = Canvas(tk)
    tk.winfo_width()
    canvas.pack(fill=BOTH, expand=Y)
    # canvas.config(highlightthickness=0)
    tk.update()

    balls = []
    num = 50
    for i in range(num):
        ball = Ball(canvas, tk)
        ball.create_ball()
        balls.append(ball)

    move_balls()

    tk.mainloop()

五、运行效果

好吧，写完，希望对你有帮忙。