Crawl Space

简介

# Using We Need To Go Deeper! nr randomly (8% chance)/r on certain patterned tiles (100% chance once per floor)

Mechanics

When entering a room pre-determined to contain a Crawl Space entrance, an RNG roll is made using the floor seed. This value will be shifted and divided, until its final result is in the grid range for the current room (ie: 128 tiles for 1x1 rooms, or 16x8). If said tile value is tied to a simple rock (not tinted, not a prop), then access to the Crawl Space will be granted upon destroying that rock. Only one room per floor has the right to spawn a Crawl Space, and not every floor is given one during the initial generation, even though every floor has also a Crawl Space and a Black Market ready in queue. The tile value can also be tied to props (empty tiles, doors, pots, void tiles, spikes, metal blocks, ...), but the Crawl Space won't spawn unless it's below a simple rock.

Layouts

Downward arrows represent tiles where no ladder is present, meaning Isaac will be forced downward toward the floor. This is also true of tiles that contain pickups. File:ItemDungeon 1.png File:ItemDungeon 5.png File:ItemDungeon 6.png File:ItemDungeon 7.png File:ItemDungeon 8.png File:ItemDungeon 9.png|Black Market entrance File:ItemDungeon 2.png|a File:ItemDungeon 3.png|a File:ItemDungeon 4.png|a File:ItemDungeon 10.png|a+ (Rare) File:ItemDungeon 11.png|a+ (Rare) File:Item dungeon annoying.png|frameless Sometimes an item can spawn in a closed-off space, requiring specific items in order to access it.

Notes

* Crawl Spaces will sometimes contain another exit on the right side, which leads to a Black Market. * There is only one Crawl Space room per floor. Thus, if Isaac finds two trapdoors with ladders on the same floor, they will lead to the same Crawl Space. When Isaac exits the Crawl Space, he will come out from the entrance he came in from. Creating a Crawl Space within a Crawl Space with will just take Isaac back to the original one. * Entering a Crawl Space in the Boss Rush room and exiting it after the time limit has expired will transport Isaac back to the Mom Boss room. * There is no map in the Crawl Space, similar to the Black Market, the I AM ERROR room, the Devil Room, and the Angel Room. ** This is because the Crawl Space does not technically occupy a fixed location on the floor relative to other rooms; Isaac is, in a sense, teleported to the Crawl Space when he touches the trapdoor. Possibly related to this, should Isaac enter a crawl space from a Devil Room, upon exiting he will emerge back in the regular map.

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