function init_movement()
   camera_pos = {0, 0}
end


function handle_input()
   new_pos = camera_pos
   if (btnp(0)) new_pos[1] -= 1 -- move left
   if (btnp(1)) new_pos[1] += 1 -- move right
   if (btnp(2)) new_pos[2] -= 1 -- move up
   if (btnp(3)) new_pos[2] += 1 -- move down

   if legal_move(new_pos) then
      camera_pos = new_pos
   end
   
   -- todo: determine whether we need to regen map and what that means
end

function draw_player()

end

function legal_move(pos)
   return true
end