x = ((argument0 - 3) * 8)
y = ((argument1 - 3) * 8)
mystr = string(global.map[argument0, argument1])
if (mystr != "0")
{
    wallU = string_char_at(mystr, 1)
    wallR = string_char_at(mystr, 2)
    wallD = string_char_at(mystr, 3)
    wallL = string_char_at(mystr, 4)
    color = string_char_at(mystr, 5)
    special = string_char_at(mystr, 6)
    corner = string_char_at(mystr, 7)
    draw_mapblock(x, y, wallU, wallR, wallD, wallL, color, special, global.dmap[argument0, argument1], corner)
}