function init()
    x, y, dx, dy = 0, 0, 1, 1
    paper(COLOR_BLACK)
    ink(COLOR_RED)
end

function update()
    paper(COLOR_BLACK)
    cls()
    x = x + dx
    y = y + dy
    if x == 39 or x == 0 then
        dx = -dx
    end
    if y == 29 or y == 0 then
        dy = -dy
    end
    locate(2, 2)
    paper(COLOR_GREEN)
    ink(COLOR_BLACK)
    print("HOLA!")

    --locate(x, y)
    ink(COLOR_RED)
    paper(COLOR_YELLOW)
    print("\224", x, y)
end