Test = {} function Test.initialize(w, h) visualizer.map:fill(false) for mx = 0, w-1 do for my = 0, h-1 do if mx == 0 or mx == w-1 or my == 0 or my == h-1 then visualizer.map:draw_wall(mx, my) end end end end function Test.update() end visualizer.algorithm_manager:register_algorithm("Test", Test.initialize, Test.update, 1)