User:Blcd/RandomTidbits

What?

This page contains random information gathered by reverse engineering that has yet to make it into a relevant page. Feel free to use this information and enhance relevant pages. Please strike-out the relevant text when you do. Also feel free to message me on discord or edit my talk page with any research requests.

Items

Athame/Maw

• Athame is a 15% chance on kill to spawn a blackheart. Maw is a 5% chance on kill to spawn a blackheart. If both proc, the black heart drop percentage is whatever one triggered last.
• The effect can stack (E.g. Athame + Razor Blade). This can cause multiple hearts to spawn if the killing damage from multiple effects all trigger on the same frame. Here is an example showing this behavior with a 100% drop rate. https://www.youtube.com/watch?v=ppXu5A2FvS8.

Dead Eye

Upon missing there is an increasing chance to lose the buff.

• first miss = 20%
• second miss = 33%
• third miss and beyond = 50%

Delirious

Delirious can spawn the following bosses(v193) http://pastebin.com/simKrthQ

Monster Manual

The list of familiars Monster Manual picks from.

Name
Brother Bobby
Cube of Meat
Halo of Flies
Distant Admiration
Sister Maggy
Little Chubby
Robo-Baby
Little Gish
Little Steven
Guardian Angel
Demon Baby
Forever alone
Smart Fly
Dry Baby
Juicy Sack
Robo-Baby 2.0
Rotten Baby
Headless Baby
Leech
Bob's Brain
Lil Brimstone
Lil Haunt
Big Fan
Sissy Longlegs
Gemini
???'s Only Friend
Ball of Bandages

D4

D4 rerolling excludes the following items.

Id	Name
10	Halo of Flies
81	Dead Cat
238	Key Piece 1
239	Key Piece 2
258	Missing No.
327	The Polaroid
328	The Negative
376	Restock (only in greed mode)
474	Tonsil

Familiars

Lil' Chest

Upon clearing a room, Lil' Chest has a random chance to spawn a consumable or trinket. The drop chance is seeded, however the drop itself is not seeded.

• Chances without BFFs!
  • 10% for a trinket
  • 25% for a consumable
• Chances with BFFs!
  • 12.5% for a trinket
  • 31.25% for a consumable

Bomb Bag

The bomb bag drops a bomb after a certain number of room clears. Note the room clears is tracked per familiar.

• Without BFFs!
  • floor(roomsCleared / 1.1) > 0 && (floor(roomsCleared / 1.1) & 1) == 0
• With BFFs!
  • floor(roomsCleared / 1.2) > 0 && (floor(roomsCleared / 1.2) & 1) == 0

Pickup Familiars

ID	Name	Normal	BFFS!	Notes
94	Sack of Pennies	cleared > 0 && cleared & 1 == 0	cleared > 0 && (cleared & 1 == 0 || rand() % 3 == 0)
96	Little C.H.A.D.	floor(cleared / 1.1) > 0 && floor(cleared / 1.1) & 1 == 0	floor(cleared / 1.2) > 0 && floor(cleared / 1.2) & 1 == 0
98	The Relic	floor(cleared / 1.11) & 3 == 2	floor(cleared / 1.15) & 3 == 2
131	Bomb Bag	floor(cleared / 1.1) > 0 && floor(cleared / 1.1) & 1 == 0	floor(cleared / 1.2) > 0 && floor(cleared / 1.2) & 1 == 0
266	Juicy Sack	1-2 blue spiders (seeded)	+1 blue spider
271	Mystery Sack	floor(cleared / 1.11) & 3 == 2	floor(cleared / 1.15) & 3 == 2	Drops Hearts, Coins, Keys and Bombs. The drop's type is seeded but the subType is unseeded. The drop function explicitly passes a subtype instead of 0. The ranges are, Hearts = 1-6, Coins = 1-4, Keys = 1-3, Bombs = 1-2.
362	Lil' Chest			See the section above
385	Bumbo	32%	40%	Level 2 Bumbo has a chance to drop a pickup on room clear.
389	Rune Bag	floor(cleared / 1.11) & 3 == 2	floor(cleared / 1.15) & 3 == 2
403	Spider Mod	10%	12.5%(1 in 8)	If the roll succeeds, 2/3 chance to spawn a blue spider, 1/3 chance to spawn a battery.
491	Acid Baby	floor(cleared / 1.1) > 0 && floor(cleared / 1.1) & 1 == 0	floor(cleared / 1.2) > 0 && floor(cleared / 1.2) & 1 == 0
500	Sack of Sacks	floor(cleared / 1.1) > 0 && floor(cleared / 1.1) & 1 == 0	floor(cleared / 1.2) > 0 && floor(cleared / 1.2) & 1 == 0

Room Anti-softlock

This is the feature where doors will open after a set time. The anti-softlock check fires every 2 seconds after being in a room for 30 seconds. These are the door open conditions

• Only works in RoomType.ROOM_DEFAULT
• Doesn't trigger if there is a boss/miniboss in the room or the player has flying
• The remaining enemies must be unable to path to the player (Ignoring poop)
• The remaining enemies must have GridCollisionClass COLLISION_WALL or COLLISION_WALL_EXCEPT_PLAYER