Rotating a rectangle slowly in pygame
I have a code:
mouseX, mouseY = pygame.mouse.get_pos()
angle = math.degrees(math.atan2(mouseY - self.rect.centery, mouseX - self.rect.centerx))
rotated = pygame.transform.rotate(self.rect, -angle)
self.rect = lol.get_rect()
How do I change this code to slowly rotate the rectangle depending on the angle of the mouse (10d / s, etc.)?
Edit: I want to rotate a CLASS object (based on the pygame.sprite.Sprite class)
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1 answer
Just don't rotate the image to the target angle, but only slightly until you reach the target angle.
Here's a very simple example. The arrow will follow the mouse slowly:
import pygame, math, base64
pygame.init()
screen = pygame.display.set_mode((200, 200))
img = 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surf = pygame.image.fromstring(base64.b64decode(img, 'UTF-8'), (32, 32), 'RGBA')
def rot_center(image, angle):
orig_rect = image.get_rect()
rot_image = pygame.transform.rotate(image, angle)
rot_rect = orig_rect.copy()
rot_rect.center = rot_image.get_rect().center
rot_image = rot_image.subsurface(rot_rect).copy()
return rot_image
current_angle = 0
while True:
if pygame.event.get(pygame.QUIT): break
pygame.event.get()
mouseX, mouseY = pygame.mouse.get_pos()
rect = surf.get_rect(center=(92, 92))
target_angle = math.degrees(math.atan2(mouseY - rect.centery, mouseX - rect.centerx))
if current_angle > target_angle:
current_angle -= 0.01
if current_angle < target_angle:
current_angle += 0.01
screen.fill((40, 140, 40))
screen.blit(rot_center(surf, -current_angle), rect)
pygame.display.update()
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