Zadanie 2 - Defitowski Piątek

# This file has been written to your home directory for convenience. It is
# saved as "/home/pi/joystick_loop-2017-11-29-03-48-21.py"


#!/usr/bin/pyt
from sense_hat import SenseHat

x = y = 4
hat = SenseHat()

def update_screen():
    hat.clear()
    hat.set_pixel(x, y, 0, 255, 0)
    print("x = " + str(x) + ", y = " + str(y))

def clamp(value, min_value=0, max_value=7):
    return min(max_value, max(min_value, value))

def move_dot(event):
    global x, y
    if event.action in ('pressed', 'held'):
        x = clamp(x + {
            'left': -1,
            'right': 1,
            }.get(event.direction, 0))
        y = clamp(y + {
            'up': -1,
            'down': 1,
            }.get(event.direction, 0))

update_screen()
while True:
    for event in hat.stick.get_events():
        move_dot(event)
        update_screen()