Posibly it´s just an other stupied question, but can I use negative index in an array? To explain what I wan to have, an array starting wit -2 to max 99, so it can be used to store all map chanels from a mesh.
Nope, maxscript arrays must start at 1, and c++ arrays must start at 0.
If you need a negative index to reference an array value, just transform the index to be 1-based before accessing the array. Something like:
channel = -2
map = mapArray[channel + 3]
are we talking about array or bitarray?
Array. Need to extract contents of all avaible map chanels of a mesh. Normally my meshes use chanels from -2 to max 2, while not all of them are used.
Maybe you could use a Dictionary instead?
https://knowledge.autodesk.com/search-result/caas/CloudHelp/cloudhelp/2018/ENU/MAXScript-Help/files/GUID-39A9FDB8-E508-413F-BF58-EC8F52BE7CA9-htm.html
d = Dictionary #integer
d[-2] = #(1, 2, 3, 4)
d[1] = #(1, 2, 3)
d[23] = #(1, 2)
No, as it´s only avaible since max2017.