Question

因此，在这个程序中，你可以使用WASD键在屏幕周围移动一艘宇宙飞船，并且工作正常。但这里的问题是我希望宇宙飞船精灵根据鼠标指针旋转，基本上我想让它看一下鼠标。而且我有点工作，当我在屏幕上移动鼠标时它有点摇摆，但它实际上并没有旋转。该部分是所有角度计算，是在太空船的get_angle（）和rotate（）方法中。

我的代码：

import pygame
from livewires import games, color
import math

games.init(screen_width = 700, screen_height = 650, fps = 50)

class Create_spaceship(games.Sprite):
    '''A spaceship controlled by the arrow keys'''        
    def update(self):
        '''Move the coordinates'''
        key = pygame.key.get_pressed()
        dist = 4

        if key[pygame.K_w]:
            self.y -= dist
        if key[pygame.K_s]:
            self.y += dist
        if key[pygame.K_a]:
            self.x -= dist
        if key[pygame.K_d]:
            self.x += dist

        #Check to see if the spaceship is oustside boundries
        if self.left < 0:
            self.left = 0
        if self.right > games.screen.width:
            self.right = games.screen.width
        if self.top < 0:
            self.top = 0
        if self.bottom > games.screen.height:
            self.bottom = games.screen.height

        self.get_angle()

    def get_angle(self):
        '''Will get the angle between the mouse and the image'''
        mouseX = games.mouse.x
        mouseY = games.mouse.y
        spaceshipX = self.x
        spaceshipY = self.y

        self.angle = math.atan2(mouseX - spaceshipX, mouseY - spaceshipY)

        print self.angle
    def rotate(self):
        '''Rotates the sprite at the angle found in get_angle()'''
        self.angle = self.angle


def main():
    screen_background = games.load_image('resized_stars background.png', transparent = False)
    games.screen.background = screen_background

    spaceship_image = games.load_image('8-bit_Spaceship_withBG.png')
    spaceship = Create_spaceship(image=spaceship_image,
                          x = games.mouse.x,
                          y = games.mouse.y)
    games.screen.add(spaceship)
    games.mouse.is_visible = True

    games.screen.mainloop()

main()

Answer 1

使用pygame.transform.rotate(spaceship.angle)

https://www.pygame.org/docs/ref/transform.html

如何在pygame中正确获取sprite对象以查看鼠标

1 个答案: