test_camera.py 文件源码

def test_movement(self):
        # Create a test surface with a red square at (0, 0) and a blue
        # square at (1, 1), both being 2x2.
        test_surface = pygame.surface.Surface((3, 3))
        test_surface.fill((255, 0, 0), pygame.Rect(0, 0, 2, 2))
        test_surface.fill((0, 255, 0), pygame.Rect(1, 1, 2, 2))

        # Create our camera
        camera = Camera((3, 3), (2, 2), (2, 2),
                        behavior=CameraBehavior())

        # Blit our test surface
        camera.source_surface.blit(test_surface, (0, 0))
        camera.update_state(["this", "seriously", 323423, "works"])

        # Set focus to the top left pixel and check that we have a 2x2
        # view into the test surface in the top left (that is, (0, 0)
        # to (1, 1) should be visible)
        camera.scroll_to(pygame.Rect(0, 0, 1, 1))
        camera.update_state("HAHA LIES THIS IS LIES AHAHAHA")
        focal_subsurface = test_surface.subsurface(pygame.Rect(0, 0, 2, 2))
        assert(compare_surfaces(focal_subsurface, camera))

        # Set focus to the pixel in the center of the test surface (1, 1)
        # and check that (1, 1) to (2, 2) is displayed on the camera
        camera.scroll_to(pygame.Rect(1, 1, 1, 1))
        camera.update_state("lialskdjflasjflksadjf")
        focal_subsurface = test_surface.subsurface(pygame.Rect(1, 1, 2, 2))
        assert(compare_surfaces(focal_subsurface, camera))