Rotating a sprite on pygame

Question

I have created a class for the zombie I blit into the screen, but the rotation does not work at all, it rotates a lot and moves the image around, is there some way to rotate the image around its center? how could I change the rotate def so that it works properly?

class zombieObj:
    def __init__(self, x, y, vel, angle):
      tempZombie = pygame.image.load('zombieSprite.png')
      self.zombieSpriteSurface = pygame.transform.scale(tempZombie, (64, 64))
      self.x = x
      self.y = y
      self.vel = 1
      self.angle = angle
    def rotate(self, image, angle):
      self.zombieSpriteSurface = pygame.transform.rotate(image, angle)

and this is how I called it in the loop:

zombieSprite.angle = zombieSprite.angle + 5
zombieSprite.rotate(zombieSprite.zombieSpriteSurface, zombieSprite.angle)

Rabbid76 · Accepted Answer · 2022-01-26T21:19:55.963

See How do I rotate an image around its center using PyGame?. The trick is to get the center of the image before rotation and set it after rotation. Also, you need to rotate the original image to avoid distortion:

class ZombieObj:
    def __init__(self, x, y, vel, angle):
        tempZombie = pygame.image.load('zombieSprite.png')
        self.originalImage = pygame.transform.scale(tempZombie, (64, 64))
        self.vel = 1
        self.angle = 0
        self.rect = self.originalImage.get_rect(topleft = (x, y))
        self.roatate(angle)

    def rotate(self, angle):
        self.angle = angle
        self.zombieSpriteSurface = pygame.transform.rotate(self.originalImage, self.angle)
        self.rect = self.zombieSpriteSurface.get_rect(center = self.rect.center)

If you want to increase the rotation by a certain angle, you need to add the additional angle to the current angle:

class ZombieObj:
    # [...]

    def rotate(self, deltaAngle):
        self.angle += deltaAngle
        self.zombieSpriteSurface = pygame.transform.rotate(self.originalImage, self.angle)
        self.rect = self.zombieSpriteSurface.get_rect(center = self.rect.center)

Rotating a sprite on pygame

1 Answers1