Hatchery

__init__.py

Content

import system, sys, ugfx

n = 0

def action_exit(pushed):
    if (pushed):
        system.home()

def draw_number():
    global n
    ugfx.area(0, 0, 300, 300, ugfx.WHITE)
    ugfx.string(0, 0, "n = {}".format(n), "Roboto_Regular12", ugfx.BLACK)
    ugfx.string(0, 15, "Press up/down to", "Roboto_Regular12", ugfx.BLACK)
    ugfx.string(0, 30, "increase/decrease n", "Roboto_Regular12", ugfx.BLACK)
    ugfx.flush()
    
def draw_factorial(pushed):
    if (pushed):
        global n
        ugfx.area(0, 0, 300, 300, ugfx.WHITE)
        ugfx.string(0, 0, "n! = {}".format(factorial(n)), "Roboto_Regular12", ugfx.BLACK)
        ugfx.string(0, 15, "Press up/down to", "Roboto_Regular12", ugfx.BLACK)
        ugfx.string(0, 30, "increase/decrease n", "Roboto_Regular12", ugfx.BLACK)
        ugfx.flush()

def increase_n(pushed):
    global n
    if (pushed):
        n += 1
        draw_number()

def decrease_n(pushed):
    global n
    if (pushed and n > 0):
        n -= 1
        draw_number()

def factorial(n):
    ret = 1;
    for i in range(1, n + 1):
        ret *= i
    return ret

def main():
    ugfx.input_init()
    ugfx.input_attach(ugfx.BTN_B, action_exit)
    ugfx.input_attach(ugfx.BTN_START, draw_factorial)
    ugfx.input_attach(ugfx.JOY_UP, increase_n)
    ugfx.input_attach(ugfx.JOY_DOWN, decrease_n)

draw_number()
    sys.stdin.read(1)
    action_exit(True)

main()