''' Lampenfeld   '''
from machine import Pin
from neopixel import NeoPixel
from time import sleep
z_max = 4       # Ändere 'rows' in 'diagram.json 
s_max = 5      # Ändere 'cols' in 'diagram.json 
NUM_LEDS = z_max * s_max
pixels = NeoPixel(Pin(2), NUM_LEDS)

oben   = Pin( 4, Pin.IN, Pin.PULL_UP)      # grün 
rechts = Pin(19, Pin.IN, Pin.PULL_UP)      # schwarz
links  = Pin(21, Pin.IN, Pin.PULL_UP)      # grau
OK     = Pin(5, Pin.IN, Pin.PULL_UP)       # orange
unten  = Pin(18, Pin.IN, Pin.PULL_UP)   # gelb - Einzelschritt

automatisch = False

an = (255,0,0); an_halb = (128,0,0)
aus = (0,0,64); aus_halb = (0,0,16)
for index in range(NUM_LEDS):
    pixels[index] = aus
pixels.write()

def index(z,s):
    if z%2==0:
        s = s_max - (s-1)
    return (z-1)*s_max + (s-1)

def pixel(z,s):
    i = index(z,s)
    if pixels[i] == an:
        pixels[i] = aus
    else:
        pixels[i] = an
    pixels.write()

def pixel_blink(z,s):
    i = index(z,s)
    last = pixels[i]
    pixels[i] = (0,128,0) 
    pixels.write()
    sleep(0.1)
    pixels[i] = last
    pixels.write()
    sleep(0.1)

weiter = True
z = z_max//2
s = s_max//2
while weiter:
    print(".", end="")
    pixel_blink(z,s)
    if oben.value()==0:
        z = z-1
        if z<1: z=z_max
    if unten.value()==0:
        z = z+1
        if z>z_max: z=1
    if links.value()==0:
        s = s-1
        if s<1: s=s_max
    if OK.value()==0:
        pixel(z,s)
        if z>1: pixel(z-1,s)
        if z<z_max: pixel(z+1,s)
        if s>1: pixel(z,s-1)
        if s<s_max: pixel(z,s+1)
        

    if rechts.value()==0:
        s = s+1
        if s>s_max: s=1
    
print("Spiel wurde beendet")