class Pong(arcade.Window):
'''
Classic pong arcade game but with only one player.
Focuses on keeping the ball on the right side.
'''
ball: Ball
paddle: Paddle
score: int
holding_up: bool
holding_down: bool
def __init__(self, width, height):
'''
Init function begins the frame window and sets up the default values
Parameters
----------
None
Returns
-------
None
'''
super().__init__(width, height)
self.ball = Ball()
self.paddle = Paddle()
self.score = 0
self.holding_up = False
self.holding_down = False
arcade.set_background_color(arcade.color.BLACK)
def on_draw(self):
'''
Function called automatically by the framework to render the game.
Parameters
----------
None
Returns
-------
None
'''
arcade.start_render()
self.ball.draw()
self.paddle.draw()
self.draw_score()
self.draw_ball_position()
self.draw_paddle_position()
def draw_score(self):
'''
Draws the score of the player on the top left corner
of the window.
Parameters
----------
None
Returns
-------
None
'''
score_text = f"Score: {self.score}"
x: int = 10
y: int = 280
arcade.draw_text(
text=score_text,
start_x=x,
start_y=y,
font_size=12,
color=arcade.color.GREEN
)
def draw_ball_position(self):
'''
Draws the position of the ball on the top right of the screen
Parameters
----------
None
Returns
-------
None
'''
x: int = self.ball.center.x
y: int = self.ball.center.y
text: str = f"Ball [X: {x} Y: {y}]"
arcade.draw_text(
text=text,
start_x=280,
start_y=280,
font_size=12,
color=arcade.color.GREEN
)
def draw_paddle_position(self):
'''
Draws the position of the paddle on the bottom right of the screen
Parameters
----------
None
Returns
-------
None
'''
x: int = self.paddle.center.x
y: int = self.paddle.center.y
text: str = f"Paddle [X: {x} Y: {y}]"
arcade.draw_text(
text=text,
start_x=270,
start_y=10,
font_size=12,
color=arcade.color.GREEN
)
def update(self, delta_time):
'''
Updates the screen based on the new values
Parameters
----------
None
Returns
-------
None
'''
self.ball.advance()
self.check_keys()
self.check_miss()
self.check_hit()
self.check_bounce()
def check_bounce(self):
'''
Checks to see if the ball is within the boundaries that it needs.
If the ball is too close to the right or left side then it will
reverse the delta_x of the ball. If the ball is too far up or
down then it will reverse the delta_y of the ball.
Parameters
----------
None
Returns
-------
None
'''
if self.ball.center.x < 0:
self.ball.bounce_horizontal()
if self.ball.center.x > 400:
self.ball.bounce_horizontal()
if self.ball.center.y < 0:
self.ball.bounce_vertical()
if self.ball.center.y > 300:
self.ball.bounce_vertical()
def check_miss(self):
'''
Checks to see if the ball has gone too far to the left, meaning
that the player missed the ball.
Parameters
----------
None
Returns
-------
None
'''
if self.ball.center.x < 0:
self.score -= SCORE_MISS
self.ball.restart()
def check_hit(self):
'''
Check to see if the ball has hit the paddle on the x or
y plane of the paddle.
If it hits, it will increment the velocity by 1 and
increase the score.
Parameters
----------
None
Returns
-------
None
'''
too_close_x: int = (PADDLE_WIDTH / 2) + BALL_RADIUS
too_close_y: int = (PADDLE_HEIGHT / 2) + BALL_RADIUS
ball_x: int = self.ball.center.x
ball_y: int = self.ball.center.y
paddle_x: int = self.paddle.center.x
paddle_y: int = self.paddle.center.y
if (abs(ball_x - paddle_x) < too_close_x and
abs(ball_y - paddle_y) < too_close_y):
self.ball.bounce_horizontal()
self.score += SCORE_HIT
self.ball.velocity.dx += 1
self.ball.velocity.dy += 1
def check_keys(self):
'''
Checks if the up or down keys are being held down.
If they are being held down, then move the paddle
until it cannot move any further.
Parameters
----------
None
Returns
-------
None
'''
paddle_y: int = self.paddle.center.y
upper_edge: int = SCREEN_HEIGHT - (PADDLE_HEIGHT / 2) - 5
if self.holding_up and paddle_y < upper_edge:
self.paddle.move_up()
if self.holding_down and paddle_y > 30:
self.paddle.move_down()
def on_key_press(self, key, key_modifers):
'''
Detects if the key is being pressed, updates
values accordingly.
Parameters
----------
None
Returns
-------
None
'''
if key == arcade.key.UP or key == arcade.key.W:
self.holding_up = True
if key == arcade.key.DOWN or key == arcade.key.S:
self.holding_down = True
def on_key_release(self, key, key_modifers):
'''
Checks to see if the key has been released, and if it
has then it will disengage the button.
Parameters
----------
None
Returns
-------
None
'''
if key == arcade.key.UP or key == arcade.key.W:
self.holding_up = False
if key == arcade.key.DOWN or key == arcade.key.S:
self.holding_down = False
if ball.is_colliding_with_left_goal():
ball.rect.x = WIDTH / 2
ball.rect.y = HEIGHT / 2
player2_score += 1
if ball.is_colliding_with_right_goal():
ball.rect.x = WIDTH / 2
ball.rect.y = HEIGHT / 2
player1_score += 1
# ------------------- KEY HANDLING --------------------
keys = pygame.key.get_pressed()
if keys[pygame.K_UP]:
right_paddle.move_up()
if keys[pygame.K_DOWN]:
right_paddle.move_down()
if keys[pygame.K_w]:
left_paddle.move_up()
if keys[pygame.K_s]:
left_paddle.move_down()
# ------------------ QUIT --------------------------
# Goes through the list of buttons the player has pressed
for event in pygame.event.get():
# Checks to see if player hits the X button on the window
if event.type == pygame.QUIT:
# Stops the game loop
