formats: Update to ${concat(…)} to build on current nightly ${concat(…)} replaces the removed concat_idents!() macro, but doesn’t support being used in nested repetitions for now. We can remove the gen_match!() macro once this is supported again.

from pytouhou.game.element cimport Element
from pytouhou.game.sprite cimport Sprite

cdef class Orb(Element):
    cdef public double offset_x, offset_y
    cdef Element player
    cdef object fire

    cpdef update(self)