[PyGame] vert and horz scrolling background

[michael1789]

I'm trying to make a background that scrolls in all directions. I'm working from an example for a horizontal scrolling game and adding vertical to it, but I can't get it to work right. It works vertical and horizontally but not diagonally.

Here is the code, could someone give me a pointer on how I can make this work correctly?

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def draw(self, screen):           self.bgx -= self.player.velocity.x         self.bgy -= self.player.velocity.y         rel_bgx = self.bgx % self.bg.get_rect().width         rel_bgy = self.bgy % self.bg.get_rect().height         screen.blit(self.bg, (rel_bgx - self.bg.get_rect().width, self.bgy))         screen.blit(self.bg, (self.bgx, rel_bgy - self.bg.get_rect().height))         if rel_bgx < 800:             screen.blit(self.bg, (rel_bgx, self.bgy))         if self.bgx > 0:             screen.blit(self.bg, (self.bgx - self.bg.get_rect().width, rel_bgy))         if rel_bgy < 800:             screen.blit(self.bg, (self.bgx, rel_bgy))         if self.bgy > 0:             screen.blit(self.bg, (rel_bgx, self.bgy - self.bg.get_rect().height))

[Windspar]

Just tile it.

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import os import pygame   class DisplayEngine:     @staticmethod     def center_screen():         os.environ['SDL_VIDEO_CENTERED'] = '1'       def __init__(self, caption, width, height, flags=0):         pygame.display.set_caption(caption)         self.surface = pygame.display.set_mode((width, height), flags)         self.rect = self.surface.get_rect()         self.clock = pygame.time.Clock()         self.running = False         self.delta = 0         self.fps = 60       def idle(self):         self.delta = self.clock.tick(self.fps)       def quit(self):         self.running = False   class Scene:     def __init__(self, display_engine):         self.display_engine = display_engine         self.bg = pygame.Surface((800, 800))         self.bg.fill(pygame.Color('gray5'))         pygame.draw.line(self.bg, pygame.Color('dodgerblue'), (0, 10), (800, 10))         pygame.draw.line(self.bg, pygame.Color('dodgerblue'), (0, 400), (800, 400), 2)         pygame.draw.line(self.bg, pygame.Color('dodgerblue'), (0, 750), (800, 750))         pygame.draw.line(self.bg, pygame.Color('firebrick'), (20, 0), (20, 800), 3)         pygame.draw.line(self.bg, pygame.Color('firebrick'), (300, 0), (300, 800))           self.camera = pygame.Vector2()         self.camera_speed = 140 / 1000       # Area you are looking for.     def tile_image(self, surface, image):         width, height = self.display_engine.rect.size         i_width, i_height = image.get_size()         camera_x = int(self.camera.x % i_width)         camera_y = int(self.camera.y % i_height)         for x in range(-camera_x, width, i_width):             for y in range(-camera_y, height, i_height):                 surface.blit(image, (x, y))       def mainloop(self):         self.display_engine.running = True         while self.display_engine.running:             for event in pygame.event.get():                 if event.type == pygame.QUIT:                     self.display_engine.quit()               keys = pygame.key.get_pressed()             if keys[pygame.K_w]:                 self.camera.y -= self.camera_speed * self.display_engine.delta               if keys[pygame.K_s]:                 self.camera.y += self.camera_speed * self.display_engine.delta               if keys[pygame.K_a]:                 self.camera.x -= self.camera_speed * self.display_engine.delta               if keys[pygame.K_d]:                 self.camera.x += self.camera_speed * self.display_engine.delta                 surface = self.display_engine.surface             surface.fill(pygame.Color("black"))               self.tile_image(surface, self.bg)               pygame.display.flip()             self.display_engine.idle()   if __name__ == '__main__':     pygame.init()     DisplayEngine.center_screen()     display_engine = DisplayEngine("Moving Background", 600, 600)     scene = Scene(display_engine)     scene.mainloop()

[michael1789]

Your're a legend! Works like a dream.

Thank you.