Using the SenseHat joystick to manipulate pixels in the LED matrix

DrawOnSenseHatWithJoystick.py

#For use with Rasp Pi SenseHat

from sense_hat import SenseHat, ACTION_PRESSED, ACTION_HELD, ACTION_RELEASED
from signal import pause
 
sense = SenseHat()
sense.clear()
 
#Where is the cursor starting point?
x = 2
y = 2
 
lead_pixel_color = [255,0,0]
 
sense.set_pixel(x,y,lead_pixel_color)
 
leave_trail = True
 
while True:
    #Wait for joystick input
    event = sense.stick.wait_for_event()
 
    #check for pressed action and whether or not to leave trail
    if event.action == "pressed" and leave_trail == True:
        sense.set_pixel(x,y,0,0,255)
 
    elif event.action == "pressed" and leave_trail==False:
        
        sense.set_pixel(x,y,0,0,0)
 
    
    #When joystick pressed up
    if event.action == "pressed" and event.direction == "up":
        y-=1
        y = y%8
        sense.set_pixel(x,y,lead_pixel_color)
 
    #When joystick pressed down
    if event.action == "pressed" and event.direction == "down":
        y+=1
        y = y%8
        sense.set_pixel(x,y,lead_pixel_color)
        
    #When joystick pressed left
    if event.action == "pressed" and event.direction == "left":
        x-=1
        x=x%8
        sense.set_pixel(x,y,lead_pixel_color)
        
    #When joystick pressed right
    if event.action == "pressed" and event.direction == "right":
        x+=1
        x=x%8
        sense.set_pixel(x,y,lead_pixel_color)
        
    #When joystick pressed middle
    if event.action == "pressed" and event.direction == "middle":
        #change color to Green
        #sense.set_pixel(x,y,0,255,0)
 
     if leave_trail == True:
            leave_trail = False
            sense.set_pixel(x,y,0,0,0)
        else:
            leave_trail = True