public _boss
public _boss_pos, _boss_hp, _boss_sprite, _boss_phase, _boss_phase_frame
public _boss_damage_this_frame, _boss_mode, _boss_angle, _boss_mode_change
public _boss_phase_end_hp

label _boss byte
_boss_pos	motion_t <?>
_boss_hp	dw ?
_boss_sprite	db ?
_boss_phase	db ?
_boss_phase_frame	dw ?
_boss_damage_this_frame	db ?
_boss_mode	db ?
; Used for both movement and bullet angles.
_boss_angle	db ?
_boss_mode_change	db ?
_boss_phase_end_hp	dw ?