ok i have my map like so: 000000000 000000000 001110000 001110000 000000000 and this map is 40x40 tiles now how do i make it so that after i have blitted everything on the map i want the map x,y coords to start at the first 1 which is lets say 100,100

I take it you want a wrap around world map?

if so it''s easy :

as you move across the map mod the xpos with the maximum size of the map i.e.

xp = xp % wolrdwidth

and do the same for the height.