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Pong
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Pong
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# Implementation of classic arcade game Pong
import simplegui
import random
# initialize globals - pos and vel encode vertical info for paddles
WIDTH = 600
HEIGHT = 400
BALL_RADIUS = 20
PAD_WIDTH = 8
PAD_HEIGHT = 80
HALF_PAD_WIDTH = PAD_WIDTH / 2
HALF_PAD_HEIGHT = PAD_HEIGHT / 2
paddle_vel = 4
game_paused = False
count = 0
# initialize ball_pos and ball_vel for new bal in middle of table
# if direction is RIGHT, the ball's velocity is upper right, else upper left
def spawn_ball(direction):
global ball_pos, ball_vel # these are vectors stored as lists
ball_pos = [WIDTH // 2, HEIGHT // 2]
if direction == "RIGHT":
ball_vel = [random.randrange( 120 / 60 , 240 / 60 ), - random.randrange( 60 / 60 , 180 / 60 )]
elif direction == "LEFT":
ball_vel = [- random.randrange( 120 / 60 , 240 / 60 ), - random.randrange( 60 / 60 , 180 / 60 )]
# define event handlers
def new_game():
global paddle1_pos, paddle2_pos, paddle1_vel, paddle2_vel # these are numbers
global score1, score2 # these are ints
paddle1_pos = 200
paddle2_pos = 200
paddle1_vel = 0
paddle2_vel = 0
score1 = 0
score2 = 0
spawn_ball(random.choice(["LEFT","RIGHT"]))
def pause():
global game_paused
game_paused = not game_paused
def draw(c):
global game_paused, score1, score2, paddle1_pos, paddle2_pos, ball_pos, ball_vel,paddle1_vel,paddle2_vel
# draw mid line and gutters
c.draw_line([WIDTH / 2, 0],[WIDTH / 2, HEIGHT], 1, "White")
c.draw_line([PAD_WIDTH, 0],[PAD_WIDTH, HEIGHT], 1, "White")
c.draw_line([WIDTH - PAD_WIDTH, 0],[WIDTH - PAD_WIDTH, HEIGHT], 1, "White")
# update ball
if not game_paused:
ball_pos[0] += ball_vel[0]
ball_pos[1] += ball_vel[1]
if ball_pos[1] <= BALL_RADIUS:
ball_vel[1] = - ball_vel[1]
elif ball_pos[1] >= HEIGHT - 1 - BALL_RADIUS:
ball_vel[1] = - ball_vel[1]
if ball_pos[0] <= PAD_WIDTH + BALL_RADIUS:
if ball_pos[1] >= paddle1_pos - HALF_PAD_HEIGHT and ball_pos[1] <= paddle1_pos + HALF_PAD_HEIGHT:
ball_vel[0] = - (ball_vel[0] + (0.1 * ball_vel[0]))
ball_vel[1] = ball_vel[1] + (0.1 * ball_vel[1])
#print ball_vel
else:
score2 += 1
spawn_ball("RIGHT")
elif ball_pos[0] >= WIDTH - 1 - PAD_WIDTH - BALL_RADIUS:
if ball_pos[1] >= paddle2_pos - HALF_PAD_HEIGHT and ball_pos[1] <= paddle2_pos + HALF_PAD_HEIGHT:
ball_vel[0] = - (ball_vel[0] + (0.1 * ball_vel[0]))
ball_vel[1] = ball_vel[1] + (0.1 * ball_vel[1])
#print ball_vel
else:
score1 += 1
spawn_ball("LEFT")
# draw ball
c.draw_circle(ball_pos, BALL_RADIUS, 5, "Orange", "Yellow")
# update paddle's vertical position, keep paddle on the screen
if paddle1_pos <= HALF_PAD_HEIGHT:
paddle1_pos = HALF_PAD_HEIGHT
elif paddle1_pos >= HEIGHT - HALF_PAD_HEIGHT:
paddle1_pos = HEIGHT - HALF_PAD_HEIGHT
paddle1_pos += paddle1_vel
if paddle2_pos <= HALF_PAD_HEIGHT:
paddle2_pos = HALF_PAD_HEIGHT
elif paddle2_pos >= HEIGHT - HALF_PAD_HEIGHT:
paddle2_pos = HEIGHT - HALF_PAD_HEIGHT
paddle2_pos += paddle2_vel
# draw paddles
c.draw_line([0, paddle1_pos - HALF_PAD_HEIGHT],[0, paddle1_pos + HALF_PAD_HEIGHT], PAD_WIDTH * 2, "Red")
c.draw_line([596, paddle2_pos - HALF_PAD_HEIGHT],[596, paddle2_pos + HALF_PAD_HEIGHT], PAD_WIDTH, "Purple")
# draw scores
c.draw_text("Score1",[150,100],30,"Red")
c.draw_text(str(score1),[180,150],30,"Red")
c.draw_text("Score2",[350,100],30,"Purple")
c.draw_text(str(score2),[380,150],30,"Purple")
if score1 == 5:
c.draw_text("Player 1 wins!!",[150,250],50,"Fuchsia")
new_game()
elif score2 == 5:
c.draw_text("Player 2 wins!!",[150,250],50,"Fuchsia")
new_game()
def keydown(key):
global paddle1_vel, paddle2_vel
if key == simplegui.KEY_MAP["w"]:
paddle1_vel = - paddle_vel
elif key == simplegui.KEY_MAP["s"]:
paddle1_vel = paddle_vel
if key == simplegui.KEY_MAP["up"]:
paddle2_vel = - paddle_vel
elif key == simplegui.KEY_MAP["down"]:
paddle2_vel = paddle_vel
def keyup(key):
global paddle1_vel, paddle2_vel
if key == simplegui.KEY_MAP["w"] or key == simplegui.KEY_MAP["s"]:
paddle1_vel = 0
if key == simplegui.KEY_MAP["up"] or key == simplegui.KEY_MAP["down"]:
paddle2_vel = 0
# create frame
frame = simplegui.create_frame("Pong", WIDTH, HEIGHT)
frame.set_canvas_background("Green")
frame.add_button("Restart",new_game,100)
frame.add_button("Pause",pause,100)
frame.add_label("w for up and s for down : Player 1")
frame.add_label("up arrow key for up and down arrow key for down : Player 2")
frame.set_draw_handler(draw)
frame.set_keydown_handler(keydown)
frame.set_keyup_handler(keyup)
# start frame
new_game()
frame.start()