Export / Import Terrain Files

I used some custom formats for files used to import or export tile data. Generally, there are three file formats used for exporting/importing L2 terrain data and only one for exporting elevation data while in L0/ELV mode.

The way the data are read at all cases is the same and can be seen in the following picture:

While the map's lower-left point is the starting point (0,0), the X axis is horizontally and Y axis is vertically. In an export/import area the data order starts from the lower-left tile of this area (depicted with a dot in the picture) and the order the data are stored is row by row (represented by the arrows).

The file types available are:

• (*.exp): This contains only tile offset values (tile numbering) of the exported/importing tiles.
• (*.xpe): This contains tile offset values (tile numbering) and elevation data of the exported/importing tiles.
• (*.xpf): This contains all tile values (tile offset, elevation, PAL offset, X1 and X2) of the exported/importing tiles.

The format of these files are:

Byte #	Length	Type	Value
0	1	byte	ASCII value 84 (letter T)
1	1	byte	ASCII value 69 (letter E)
2	1	byte	ASCII value 80 (letter P)
3	4	long	Lower-left X coordinate of export area (LLX)
7	4	long	Lower-left Y coordinate of export area (LLY)
11	1	byte	ASCII value 101 (letter e)
12	1	byte	ASCII value 120 (letter x)
13	1	byte	ASCII value 112 (letter p)
14	4	long	Size of X dimension (number of columns)
18	4	long	Size of Y dimension (number of rows)
22	4	long	Tile Offset record #1
26	4	long	Tile Offset record #2
…	…	…	…
	4	long	Tile Offset record #n

File size:

Byte #	Length	Type	Value
0	1	byte	ASCII value 84 (letter T)
1	1	byte	ASCII value 69 (letter E)
2	1	byte	ASCII value 80 (letter P)
3	4	long	Lower-left X coordinate of export area (LLX)
7	4	long	Lower-left Y coordinate of export area (LLY)
11	1	byte	ASCII value 120 (letter x)
12	1	byte	ASCII value 112 (letter p)
13	1	byte	ASCII value 101 (letter e)
14	4	long	Size of X dimension (number of columns)
18	4	long	Size of Y dimension (number of rows)
22	4	long	Tile Offset record #1
26	2	short	Elevation record #1
28	4	long	Tile Offset record #2
32	2	short	Elevation record #2
…	…	…	…
	4	long	Tile Offset record #n
	2	short	Elevation record #n

File size:

Byte #	Length	Type	Value
0	1	byte	ASCII value 84 (letter T)
1	1	byte	ASCII value 69 (letter E)
2	1	byte	ASCII value 80 (letter P)
3	4	long	Lower-left X coordinate of export area (LLX)
7	4	long	Lower-left Y coordinate of export area (LLY)
11	1	byte	ASCII value 120 (letter x)
12	1	byte	ASCII value 112 (letter p)
13	1	byte	ASCII value 102 (letter f)
14	4	long	Size of X dimension (number of columns)
18	4	long	Size of Y dimension (number of rows)
22	4	long	Tile Offset record #1
26	2	short	Elevation record #1
28	1	byte	PAL Offset record #1
29	1	byte	X1 record #1
30	1	byte	X2 record #1
31	4	long	Tile Offset record #2
35	2	short	Elevation record #2
37	1	byte	PAL Offset record #2
38	1	byte	X1 record #2
39	1	byte	X2 record #2
…	…	…	…
	4	long	Tile Offset record #n
	2	short	Elevation record #n
	1	byte	PAL Offset record #n
	1	byte	X1 record #n
	1	byte	X2 record #n

File size:

The only availiable file format is:

Byte #	Length	Type	Value
0	1	byte	ASCII value 84 (letter T)
1	1	byte	ASCII value 69 (letter E)
2	1	byte	ASCII value 80 (letter P)
3	4	long	Lower-left X coordinate of export area (LLX)
7	4	long	Lower-left Y coordinate of export area (LLY)
11	1	byte	ASCII value 120 (letter x)
12	1	byte	ASCII value 108 (letter l)
13	1	byte	ASCII value 118 (letter v)
14	4	long	Size of X dimension (number of columns)
18	4	long	Size of Y dimension (number of rows)
22	2	short	Elevation record #1
24	2	short	Elevation record #2
…	…	…	…
	2	short	Elevation record #n

File size: