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Bill Blaster (Bullet Bill launcher) (27, rev. 20)
By  Hiccup on 01-31-16, 04:05 pm
Category 'Enemies - Castle', known, fully documented
Sprite set: 5-1
Data:
-- -- -- -- WD HU

Nybble 8 - W - was used by Nintendo devs, somehow as a copy of Nybble 10, but is apparently never called at all, needs testing.

Nybble 11 - U - is stored by the game for ulterior use but seems to never be called, still needs testing.
Data files:
• /enemy/I_killer_ashiba.nsbmd (SOMETHING_killer_scaffold)
• /enemy/I_killer_black.nsbmd
• /enemy/I_killer_houdai.nsbmd (SOMETHING_killer_battery)
• /enemy/killer.nsmbd
Sprite fields:
Shooting direction: list at nybble 9: 1=Left,2=Right,0=Both
Height: value at nybble 10. A height of 9 or more will make the Bill Blaster invisible if the 8 bottommost tiles disappear from view, but still retains collision.
Unknown 8: value at nybble 8. Used in-game. Doesn't do anything notable. Hiccup: What does it do?
Bill Blaster (Bullet Bill launcher) (27, rev. 21)
By  Hiccup on 07-29-16, 08:44 am
Category 'Enemies - Castle', known, fully documented
Sprite set: 5-1


Nybble 11 - U - is stored by the game for ulterior use but seems to never be called, still needs testing.
Data files:
• /enemy/I_killer_ashiba.nsbmd (SOMETHING_killer_scaffold)
• /enemy/I_killer_black.nsbmd
• /enemy/I_killer_houdai.nsbmd (SOMETHING_killer_battery)
• /enemy/killer.nsmbd
Sprite fields:
Shooting direction: list at nybble 9: 1=Left,2=Right,0=Both
Height: value at nybble 10. A height of 9 or more will make the Bill Blaster invisible if the 8 bottommost tiles disappear from view, but still retains collision.
Unknown 8: value at nybble 8. Was used by Nintendo devs, somehow as a copy of Nybble 10, but is apparently never called at all, needs testing.
Unknown 11: value at nybble 1. is stored by the game for ulterior use but seems to never be called, still needs testing.