python 贪吃蛇gui界面

以下是一个简单的Python贪吃蛇GUI界面的示例代码，使用了Tkinter库：

import tkinter as tk
import random

# 定义常量
WIDTH = 500
HEIGHT = 500
SPEED = 100
GRID_SIZE = 20

class Snake(tk.Canvas):
    def __init__(self):
        super().__init__(width=WIDTH, height=HEIGHT, background="black", highlightthickness=0)

        self.snake_positions = [(100, 100), (80, 100), (60, 100)]
        self.food_position = self.set_new_food_position()
        self.direction = "Right"
        self.score = 0

        self.create_objects()

        self.bind_all("<Key>", self.on_key_press)

        self.after(SPEED, self.perform_actions)

    def create_objects(self):
        self.create_text(
            45, 12, text=f"Score {self.score}", tag="score", fill="#fff", font=("TkDefaultFont", 14)
        )

        for x_position, y_position in self.snake_positions:
            self.create_rectangle(
                x_position, y_position, x_position+GRID_SIZE, y_position+GRID_SIZE, fill="#fff", tag="snake"
            )

        self.create_rectangle(
            self.food_position[0], self.food_position[1], self.food_position[0]+GRID_SIZE,
            self.food_position[1]+GRID_SIZE, fill="#ff0000", tag="food"
        )

    def move_snake(self):
        head_x_position, head_y_position = self.snake_positions[0]

        if self.direction == "Right":
            new_head_position = (head_x_position + GRID_SIZE, head_y_position)
        elif self.direction == "Left":
            new_head_position = (head_x_position - GRID_SIZE, head_y_position)
        elif self.direction == "Down":
            new_head_position = (head_x_position, head_y_position + GRID_SIZE)
        elif self.direction == "Up":
            new_head_position = (head_x_position, head_y_position - GRID_SIZE)

        self.snake_positions = [new_head_position] + self.snake_positions[:-1]

        for segment, position in zip(self.find_withtag("snake"), self.snake_positions):
            self.coords(segment, position[0], position[1], position[0] + GRID_SIZE, position[1] + GRID_SIZE)

    def perform_actions(self):
        if self.check_collisions():
            self.end_game()
            return

        self.check_food_collision()
        self.move_snake()
        self.after(SPEED, self.perform_actions)

    def check_collisions(self):
        head_x_position, head_y_position = self.snake_positions[0]

        return (
            head_x_position in (0, WIDTH)
            or head_y_position in (20, HEIGHT)
            or (head_x_position, head_y_position) in self.snake_positions[1:]
        )

    def on_key_press(self, e):
        new_direction = e.keysym

        all_directions = ("Up", "Down", "Left", "Right")
        opposites = ({"Up", "Down"}, {"Left", "Right"})

        if (
            new_direction in all_directions
            and {new_direction, self.direction} not in opposites
        ):
            self.direction = new_direction

    def check_food_collision(self):
        if self.snake_positions[0] == self.food_position:
            self.score += 1
            self.snake_positions.append(self.snake_positions[-1])

            self.create_rectangle(
                *self.snake_positions[-1], self.snake_positions[-1][0]+GRID_SIZE, self.snake_positions[-1][1]+GRID_SIZE,
                fill="#fff", tag="snake"
            )

            self.food_position = self.set_new_food_position()
            self.coords(self.find_withtag("food"), self.food_position[0], self.food_position[1],
                        self.food_position[0]+GRID_SIZE, self.food_position[1]+GRID_SIZE)

            score = self.find_withtag("score")
            self.itemconfigure(score, text=f"Score: {self.score}", tag="score")

    def set_new_food_position(self):
        while True:
            x_position = random.randint(0, (WIDTH-GRID_SIZE) // GRID_SIZE) * GRID_SIZE
            y_position = random.randint(2, (HEIGHT-GRID_SIZE) // GRID_SIZE) * GRID_SIZE

            food_position = (x_position, y_position)

            if food_position not in self.snake_positions:
                return food_position

    def end_game(self):
        self.delete(tk.ALL)
        self.create_text(
            self.winfo_width() / 2, self.winfo_height() / 2, text=f"Game over! You scored {self.score} points!", fill="#fff",
            font=("TkDefaultFont", 24)
        )

if __name__ == "__main__":
    root = tk.Tk()
    root.title("Snake")
    root.resizable(False, False)

    board = Snake()
    board.pack()

    root.mainloop()

这个示例代码使用了Canvas来绘制游戏界面，监听键盘事件来控制蛇的移动，检测碰撞并更新得分，以及生成新的食物。你可以根据需要进行修改和扩展。