Camera

Each scene has a single camera at scene.camera. It clears the frame, transforms world coordinates, and blits to the screen.

Basics

class MyScene(bf.Scene):
    def do_when_added(self):
        self.set_clear_color((30, 30, 40))  # delegates to camera
        self.camera.set_center(0, 0)

Useful methods:

• set_clear_color(color) / get_clear_color()
• set_center(x, y) / set_position(x, y) / move_by(dx, dy)
• zoom(factor) / zoom_by(delta)
• set_rotation(degrees) / rotate_by(degrees)
• world_to_screen(rect_or_point) / screen_to_world(point)
• get_mouse_pos() — mouse in world space
• intersects(rect) — whether a rect is in view

Following a target

self.camera.set_follow_point_func(lambda: player.rect.center)
self.camera.set_follow_damping(8)
self.camera.set_dead_zone_radius(40)

The camera updates every frame inside the scene update loop.