I wrote a script that allows a user to control the sprite of an eagle to fly around to learn pygame. It seemed fine until i implemented a rotation function that makes the sprite rotate according to the direction it is flying along. The sprite becomes really fuzzy after moving a short while and an error soon pops up saying out of memory (at this line: eagle_img = pygame.transform.rotate(eagle_img,new_angle-angle))
My code:
# eagle movement script import pygame, math, sys from pygame.locals import * pygame.init() clock = pygame.time.Clock() # terminate function def terminate(): pygame.quit() sys.exit() # incircle function, check if mouse click is inside controller def incircle(coordinates,cir_center,cir_out_rad): if math.sqrt((coordinates[0]-cir_center[0])**2+\ (coordinates[1]-cir_center[1])**2) <= cir_out_rad: return True return False # speed function, translates the controller movement into eagle movement def speed(position,cir_center,eagle_speed): x_dist = position[0] - cir_center[0] y_dist = position[1] - cir_center[1] dist = math.sqrt(x_dist**2+y_dist**2) # distance from controller knob to center if dist != 0: return [(x_dist/dist)*eagle_speed,(y_dist/dist)*eagle_speed] else: return [0,0] # rotation function, rotates the eagle image def rotation(position,cir_center): x_dist = position[0] - cir_center[0] y_dist = position[1] - cir_center[1] new_radian = math.atan2(-y_dist,x_dist) new_radian %= 2*math.pi new_angle = math.degrees(new_radian) return new_angle # screen screenw = 1000 screenh = 700 screen = pygame.display.set_mode((screenw,screenh),0,32) pygame.display.set_caption('eagle movement') # variables green = (0,200,0) grey = (100,100,100) red = (255,0,0) fps = 60 # controller cir_out_rad = 150 # circle controller outer radius cir_in_rad = 30 # circle controller inner radius cir_center = [screenw-cir_out_rad,int(screenh/2)] position = cir_center # mouse position # eagle eaglew = 100 eagleh = 60 eagle_speed = 3 eagle_pos = [screenw/2-eaglew/2,screenh/2-eagleh/2] eagle = pygame.Rect(eagle_pos[0],eagle_pos[1],eaglew,eagleh) eagle_img = pygame.image.load('eagle1.png').convert() eagle_bg_colour = eagle_img.get_at((0,0)) eagle_img.set_colorkey(eagle_bg_colour) eagle_img = pygame.transform.scale(eagle_img,(eaglew,eagleh)) # eagle controls stop_moving = False # becomes True when player stops clicking rotate = False # becomes True when there is input angle = 90 # eagle is 90 degrees in the beginning # game loop while True: # controls for event in pygame.event.get(): if event.type == QUIT: terminate() if event.type == MOUSEBUTTONUP: stop_moving = True rotate = False mouse_input = pygame.mouse.get_pressed() if mouse_input[0]: coordinates = pygame.mouse.get_pos() # check if coordinates is inside controller if incircle(coordinates,cir_center,cir_out_rad): position = pygame.mouse.get_pos() stop_moving = False rotate = True else: cir_center = pygame.mouse.get_pos() stop_moving = False rotate = True key_input = pygame.key.get_pressed() if key_input[K_ESCAPE] or key_input[ord('q')]: terminate() screen.fill(green) [dx,dy] = speed(position,cir_center,eagle_speed) if stop_moving: [dx,dy] = [0,0] if eagle.left > 0: eagle.left += dx if eagle.right < screenw: eagle.right += dx if eagle.top > 0: eagle.top += dy if eagle.bottom < screenh: eagle.bottom += dy if rotate: new_angle = rotation(position,cir_center) if new_angle != angle: eagle_img = pygame.transform.rotate(eagle_img,new_angle-angle) eagle = eagle_img.get_rect(center=eagle.center) rotate = False angle = new_angle outer_circle = pygame.draw.circle(screen,grey,(cir_center[0],cir_center[1]),\ cir_out_rad,3) inner_circle = pygame.draw.circle(screen,grey,(position[0],position[1]),\ cir_in_rad,1) screen.blit(eagle_img,eagle) pygame.display.update() clock.tick(fps) Please tell me what's wrong here and how i can improve it. Feel free to try the code out using a sprite named "eagle1.png". Thanks!