from machine import Pin, PWM
import urandom
import time

# LEDs
leds = [Pin(2, Pin.OUT), Pin(3, Pin.OUT), Pin(4, Pin.OUT)]

# Buttons
buttons = [
    Pin(16, Pin.IN, Pin.PULL_UP),
    Pin(17, Pin.IN, Pin.PULL_UP),
    Pin(18, Pin.IN, Pin.PULL_UP)
]

# Buzzer
buzzer = PWM(Pin(15))
buzzer.duty_u16(0)

score = 0
level = 1
reaction_time = 1500  # ms

def all_off():
    for l in leds:
        l.off()

def beep(freq, dur):
    buzzer.freq(freq)
    buzzer.duty_u16(30000)
    time.sleep(dur)
    buzzer.duty_u16(0)

print("Whack-a-Mole with Levels & Sound!")

while True:
    mole = urandom.randint(0, 2)
    all_off()
    leds[mole].on()
    start = time.ticks_ms()
    hit = False

    while time.ticks_diff(time.ticks_ms(), start) < reaction_time:
        for i, btn in enumerate(buttons):
            if btn.value() == 0:
                if i == mole:
                    score += 1
                    beep(1000, 0.1)   # correct
                    print("Hit! Score:", score)
                else:
                    beep(300, 0.3)    # wrong
                    print("Wrong button!")
                hit = True
                break
        if hit:
            break

    all_off()

    if score > 0 and score % 3 == 0:
        level += 1
        reaction_time = max(400, reaction_time - 200)
        print("LEVEL UP! Level:", level)

    time.sleep(0.4)
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