Tibia maps-how they really works?

[Sir Juncan]

I'm not a programmer in any way (yet) and I'm just curious-let's say we 'translate' coded map file of rl/ot map into something we can understand, how it really would looks like? I just want to know how the things work.
My idea is that there are coordinates of every sqm and there's unlimited array for every of it. Am I thinking right? More items on sqm=more positions in every array.
I'm pretty sure that many of you know how it works and I would be glad for explaining me this

 

[Ezzz]

Hmm I would say that it's a square.

A vector has 3 dimensions (like you see in school). These are X, Y & Z.

X is west / east. (Decreasing for west, increasing for east)
Y is north / south. (Increasing for north, decreasing for south)
Z is floor level. (0-15, 7 is ground floor).

I would say the hierarchy goes like this (this is only a square map with no other floors in it):

0x00 / 0x00 / 0x00
0x00 / 0x00 / 0x00
0x00 / 0x00 / 0x00

The tiles are clean, there are no important information on it. For reading it I would say it would be like (note this is really simplified);

MAP_WIDTH = Read Integer
MAP_HEIGHT = Read Integer
CURRENT_TILE_X_ID = 0
CURRENT_TILE_Y_ID = 0

while CURRENT_TILE_X_ID < MAP_WIDTH
while CURRENT_TILE_Y_ID < MAP_HEIGHT
// Read a map tile data in the current dimensions and set it to our map
MAP_TILE(CURRENT_TILE_X_ID, CURRENT_TILE_Y_ID) = Read_Tile_Data(CURRENT_TILE_X_ID, CURRENT_TILE_Y_ID)
end
end


That is just how I would do it if I was creating an RPG on XNA.

If we were about to read a tile with data information, the binary information and translation would look like this:

UINT32 -> X = 0
UINT32 -> Y = 0
BYTE ->Z = 0
UINT32 -> ITEMS SIZE = 2

1. 0x01 -> Ground Tile with item id 100
2. 0x02 -> Wall item type with item id 9999

This is very noob like but you can understand my point, you could take a look in iomapotbm.cpp from a server, or look for XNA map dimensions and such.