from sense_hat import SenseHat
import time
sense = SenseHat()

white = (255, 255, 255)
yellow = (255, 255, 0)

#bat coordinates on y-axis, can be between 1-6 as we assign to it three pixels long
bat_y = 4

ball_position = [3, 3]
#posiion where the ball moves
ball_velocity = [1, 1]

ball_position2 = [6, 5]
ball_velocity2 = [1, 1]

ball_lives = 3

#ball position x = position 0 in arrey, y = position 1.
def draw_ball():
    sense.set_pixel(ball_position[0], ball_position[1], yellow)
    #moving ball on x-axis
    ball_position[0] += ball_velocity[0]
    if ball_position[0] == 7 or ball_position[0] == 0:
        #revesing ball if it reaches 7 or 0
        ball_velocity[0] = -ball_velocity[0]
    #moving ball on y-axis
    ball_position[1] += ball_velocity[1]
    if ball_position[1] == 7 or ball_position[1] == 0:  
        ball_velocity[1] = -ball_velocity[1]
    #collision condition
    if ball_position[0] == 1 and (bat_y-1) <= ball_position[1] <= (bat_y+1):
        ball_velocity[0] = -ball_velocity[0]
    #game over condition
    if ball_position[0] == 0:
        ball_lives = ball_lives - 1
        sense.clear()
        if ball_lives == 0:
            sense.show_message("you lost")
            time.sleep(5)
        
def draw_ball2():
    sense.set_pixel(ball_position2[0], ball_position2[1], yellow)
    ball_position2[0] += ball_velocity2[0]
    if ball_position2[0] == 7 or ball_position2[0] == 0:
        ball_velocity2[0] = -ball_velocity2[0]
    ball_position2[1] += ball_velocity2[1]
    if ball_position2[1] == 7 or ball_position2[1] == 0:
        ball_velocity2[1] = -ball_velocity2[1]
    if ball_position2[0] == 1 and (bat_y-1) <= ball_position2[1] <= (bat_y+1):
        ball_velocity2[0] = -ball_velocity2[0]
    if ball_position2[0] == 0:
        sense.show_message("you lost")
        time.sleep(5)
        
#function to draw bat on sensehat
def draw_bat():
    sense.clear()
    sense.set_pixel(0, bat_y, white)
    sense.set_pixel(0, bat_y + 1, white)
    sense.set_pixel(0, bat_y - 1, white)

#joystick: press/release/hold/left/right/up/down
def move_up(event):
    global bat_y
    #adding bat_y>1 to avoid bat going outside the room (top)
    if event.action == 'pressed' and bat_y > 1:
        bat_y -= 1
        
def move_down(event):
    global bat_y
    #limit of y=6 as the bat is takin' 3 pixel-positions
    #bat_y < 6 avoids bat going outside the room (bottom)
    if event.action == 'pressed' and bat_y < 6:
        bat_y += 1
        
#checks if event was triggered
while True:
    sense.stick.direction_up = move_up
    draw_bat()
    draw_ball()
    time.sleep(0.25)
    sense.stick.direction_down = move_down
    draw_bat()
    draw_ball()
    time.sleep(0.25)
    #decreasing sleep to increase balls speed from time to time
    sense.stick.direction_up = move_up
    draw_bat()
    draw_ball()
    time.sleep(0.15)
    sense.stick.direction_down = move_down
    draw_bat()
    draw_ball()
    time.sleep(0.15)
    #agan decreasing sleep to increase balls speed
    sense.stick.direction_up = move_up
    draw_bat()
    draw_ball()
    time.sleep(0.1)
    sense.stick.direction_down = move_down
    draw_bat()
    draw_ball()
    time.sleep(0.1)