i have made a layout of a map i think its 35 x 32 tiles in each square i made a very fast diagram on paint lol so that i kinda show and tell ya what i mean 1st i'll tell ya i am after a code that will let me palce my squares adn link em all together so i can walk on em and go from square 2 square heres the weird diagram it was used on speedis so if its a lil x please refresh the pic till it comes

here it is if ya unsertand it lol also how can i make certain tiles unpassable but if im totaly outt my head and doing everything wrong please set me in the right direction by telling me how i actually do this thank you