Terrarum Game Map Format

* Endianness: LITTLE

Ord  Hex  Description
00   54   T
01   45   E
02   4D   M
03   7A   z               # 'z' because it's compressed

04   01   Version revision number

05   03   Number of layers

06   00   Reserved
07   00   Reserved

08        World width
09        World width
0A        World width
0B        World width

0C        World height
0D        World height
0E        World height
0F        World height

10        Default spawn coord X
11        Default spawn coord X
12        Default spawn coord X
13        Default spawn coord X

14        Default spawn coord Y
15        Default spawn coord Y
16        Default spawn coord Y
17        Default spawn coord Y

# Layer count 1
18   54   T
19   45   E
20   52   R
21   52   R

22        Uncompressed size of DEFLATEd payload
23        Uncompressed size of DEFLATEd payload
24        Uncompressed size of DEFLATEd payload
25        Uncompressed size of DEFLATEd payload

26...     DEFLATEd payload for the terrain (MSB ++ LSB; uncompressed size must be 1.5x of MSB)  # ++ is a list concat sign in Haskell

# Layer count 2
...       "WALL"
...       Uncompressed size of DEFLATEd payload
...       DEFLATEd payload for the wall (MSB ++ LSB; uncompressed size must be 1.5x of MSB)


# Layer count 3
...       "WIRE"
...       Uncompressed size of DEFLATEd payload
...       Wire tiles data (MSB only)

<EOF>


* To read layers: you'll need to search for specific strings, namely ["TERR", "WALL", "WIRE"]