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【作品展示】

 

【作品介绍】

贪吃蛇

 

【作品源代码】

import tkinter as tk
import random


class SnakeGame(tk.Frame):
    def __init__(self, master):
        super().__init__(master)
        self.master = master

        self.canvas_width = 400
        self.canvas_height = 400
        self.delay = 100
        self.direction = "Right"

        self.canvas = tk.Canvas(
            self.master, width=self.canvas_width, height=self.canvas_height)
        self.canvas.pack()

        self.snake = [(100, 100), (80, 100), (60, 100)]
        self.food = self.create_food()
        self.score = 0

        self.master.bind("", self.on_key_press)
        self.create_widgets()

    def create_widgets(self):
        self.start_button = tk.Button(
            self.master, text="开始游戏", command=self.start_game)
        self.start_button.pack()

        self.score_label = tk.Label(self.master, text="得分: 0")
        self.score_label.pack()

    def start_game(self):
        self.start_button.config(state=tk.DISABLED)
        self.canvas.delete("all")
        self.snake = [(100, 100), (80, 100), (60, 100)]
        self.food = self.create_food()
        self.score = 0
        self.direction = "Right"
        self.score_label.config(text="得分: 0")
        self.move_snake()

    def create_food(self):
        x = random.randint(1, (self.canvas_width - 10) // 10) * 10
        y = random.randint(1, (self.canvas_height - 10) // 10) * 10
        return x, y

    def move_snake(self):
        x, y = self.snake[0]

        if self.direction == "Up":
            y -= 10
        elif self.direction == "Down":
            y += 10
        elif self.direction == "Left":
            x -= 10
        elif self.direction == "Right":
            x += 10

        self.snake.insert(0, (x, y))

        if x == self.food[0] and y == self.food[1]:
            self.score += 10
            self.score_label.config(text="得分: {}".format(self.score))
            self.canvas.delete("food")
            self.food = self.create_food()
        else:
            self.snake.pop()

        self.draw_snake()

        if self.check_collision():
            self.game_over()
        else:
            self.master.after(self.delay, self.move_snake)

    def draw_snake(self):
        self.canvas.delete("snake")

        for x, y in self.snake:
            self.canvas.create_rectangle(
                x, y, x+10, y+10, fill="green", tags="snake")

        self.canvas.create_oval(
            self.food[0], self.food[1], self.food[0]+10, self.food[1]+10, fill="red", tags="food")
        self.canvas.tag_raise("food")

    def check_collision(self):
        x, y = self.snake[0]

        if x < 0 or x >= self.canvas_width or y < 0 or y >= self.canvas_height or (x, y) in self.snake[1:]:
            return True
        else:
            return False

    def game_over(self):
        self.canvas.create_text(self.canvas_width/2, self.canvas_height/2,
                                text="游戏结束", font=("Arial", 24), fill="red")
        self.start_button.config(state=tk.NORMAL)

    def on_key_press(self, event):
        keysym = event.keysym

        if keysym in ["Up", "Down", "Left", "Right"]:
            if keysym == "Up" and self.direction != "Down":
                self.direction = "Up"
            elif keysym == "Down" and self.direction != "Up":
                self.direction = "Down"
            elif keysym == "Left" and self.direction != "Right":
                self.direction = "Left"
            elif keysym == "Right" and self.direction != "Left":
                self.direction = "Right"


root = tk.Tk()
game = SnakeGame(root)
root.mainloop()

 

【提示】

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