A reaction game in Circuit Python

code.py

import board
import busio
import time
import random
import digitalio

NUM_PIXELS = 10

#For Pico
#import neopixel
#PIXEL_PIN = board.GP0
#BUTTON_PIN = board.GP1
#pixels = neopixel.NeoPixel(PIXEL_PIN, NUM_PIXELS, brightness=BRIGHTNESS, auto_write=False)

#For Raspberry PI
import neopixel_spi
PIXEL_PIN = board.D11
CLOCK_PIN = board.D10
BUTTON_PIN = board.D17
pixels = neopixel_spi.NeoPixel_SPI(busio.SPI(board.D11, MOSI=board.D10), 10)

BRIGHTNESS = 0.5
DELAY = 0.3


GREEN = (0, 255, 0)
RED = (255, 0, 0)
WHITE = (100, 100, 100)
FLASH_DURATION = 0.6

# Button setup
button = digitalio.DigitalInOut(BUTTON_PIN)
button.direction = digitalio.Direction.INPUT
button.pull = digitalio.Pull.UP  

def flash_color(color, duration=FLASH_DURATION):
    pixels.fill(color)
    pixels.show()
    time.sleep(duration)

while True:
    red_pos = 0

    # Move the red pixel forward
    while red_pos < NUM_PIXELS:
        # Draw strip
        for i in range(NUM_PIXELS):
            if i == red_pos:
                pixels[i] = RED
            else:
                pixels[i] = GREEN
        pixels.show()

        # Wait for DELAY, check for button press
        t0 = time.monotonic()
        pressed = False
        while time.monotonic() - t0 < DELAY:
            if not button.value:
                pressed = True
                break

        if pressed:
            if red_pos == NUM_PIXELS - 1:
                # SUCCESS!
                flash_color(WHITE)
            else:
                # FAIL!
                flash_color(RED)
            break

        red_pos += 1
    else:
        # If it reaches the end and you didn't press, flash red for "miss"
        flash_color(RED)
    
    # Small pause before restarting
    time.sleep(0.7)