new file mode 100644
--- /dev/null
+++ b/pytouhou/game/bullet.pxd
@@ -0,0 +1,19 @@
+from pytouhou.game.element cimport Element
+from pytouhou.utils.interpolator cimport Interpolator
+
+cdef class Bullet(Element):
+    cdef public unsigned long state, flags, frame, sprite_idx_offset, damage
+    cdef public double dx, dy, angle, speed
+    cdef public bint player_bullet, was_visible, grazed
+    cdef public object target, _game, _bullet_type
+    cdef public tuple hitbox
+    cdef public list attributes
+
+    cdef Interpolator speed_interpolator
+
+    cdef bint is_visible(self, unsigned int screen_width, unsigned int screen_height)
+    cpdef set_anim(self, sprite_idx_offset=*)
+    cdef void launch(self)
+    cpdef collide(self)
+    cpdef cancel(self)
+    cpdef update(self)