BDTP
BDTP is a puzzle in Animal Well. Its first clue is a UV graffiti in the office. Solving BDTP requires gathering all secret rabbits. The chalkboard in the office is to be used in conjunction with the collected rabbits at the bunny island.
Name
It is not known what exactly the abbreviation BDTP stands for. There's some speculation both for individual letters and for the whole abbreviation. For example, some suggest that letter "B" can mean either bunny or binary. A common speculated definition for "TP" is "transport protocol", as in file transfer protocols. Some speculate that the full "BDTP" stands for "Bunny Data Transfer Protocol".
Solution
The chalkboard shows a "Struct" in which the index is represented by a nibble, or 4 bits, and dir0 + dir1 (direction) are each represented by a crumb, or 2 bits. The UV paintings on the chalkboard contain the key to translating rabbit ear directions into binary units, then back into an index number.
After an eating animation, each rabbit on the island has two sets of directions that its ears point. The first set of ears can be translated using the left side of the UV lit chalkboard, providing 2 numbers each between 0-3. Each number should be converted into a 2-bit binary 'crumb'.
| 0 | 00 |
| 1 | 01 |
| 2 | 10 |
| 3 | 11 |
Both numbers should now be placed together to form a 4-bit binary 'nibble', which can be translated back into a number between 0-15. This is the rabbit's index number.
| 0 | 0000 | 4 | 0100 | 8 | 1000 | 12 | 1100 |
| 1 | 0001 | 5 | 0101 | 9 | 1001 | 13 | 1101 |
| 2 | 0010 | 6 | 0110 | 10 | 1010 | 14 | 1110 |
| 3 | 0011 | 7 | 0111 | 11 | 1011 | 15 | 1111 |
The rabbits' second set of ears simply point in two directions. In sequential order of the rabbits' index numbers, list out all 32 associated directions. The flag on the chalkboard is a clue for the starting location. Starting at the flag on the far right side of bunny island, ride the Manticore in this deciphered sequence of 32 directions between screens:
- ↑←↑←↑→↑↑
- ←↓←↑↑↑→→
- ↓→↑↑↑←↓←
- ↑←↑→→→↑←
When done correctly with all rabbits collected, you will arrive at a sky island with a giant rabbit, where you can receive wings.