#Modified from http://www.pygame.org/project-Very+simple+Pong+game-816-.html

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

import numpy

import pygame

from pygame.locals import *

from sys import exit

import random

import pygame.surfarray as surfarray

pygame.init()

screen = pygame.display.set_mode((640,480),0,32)

#Creating 2 bars, a ball and background.

back = pygame.Surface((640,480))

background = back.convert()

background.fill((0,0,0))

bar = pygame.Surface((10,50))

bar1 = bar.convert()

bar1.fill((255,255,255))

bar2 = bar.convert()

bar2.fill((255,255,255))

circ_sur = pygame.Surface((15,15))

circ = pygame.draw.circle(circ_sur,(255,255,255),(int(15/2),int(15/2)),int(15/2))

circle = circ_sur.convert()

circle.set_colorkey((0,0,0))

# some definitions

bar1_x, bar2_x = 10. , 620.

bar1_y, bar2_y = 215. , 215.

circle_x, circle_y = 307.5, 232.5

bar1_move, bar2_move = 0. , 0.

speed_x, speed_y, speed_circ = 250., 250., 250.

bar1_score, bar2_score = 0,0

#clock and font objects

clock = pygame.time.Clock()

font = pygame.font.SysFont("calibri",40)

done = False

while done==False:

for event in pygame.event.get(): # User did something

if event.type == pygame.QUIT: # If user clicked close

done = True # Flag that we are done so we exit this loop

if event.type == KEYDOWN:

if event.key == K_UP:

bar1_move = -ai_speed

elif event.key == K_DOWN:

bar1_move = ai_speed

elif event.type == KEYUP:

if event.key == K_UP:

bar1_move = 0.

elif event.key == K_DOWN:

bar1_move = 0.

score1 = font.render(str(bar1_score), True,(255,255,255))

score2 = font.render(str(bar2_score), True,(255,255,255))

screen.blit(background,(0,0))

frame = pygame.draw.rect(screen,(255,255,255),Rect((5,5),(630,470)),2)

middle_line = pygame.draw.aaline(screen,(255,255,255),(330,5),(330,475))

screen.blit(bar1,(bar1_x,bar1_y))

screen.blit(bar2,(bar2_x,bar2_y))

screen.blit(circle,(circle_x,circle_y))

screen.blit(score1,(250.,210.))

screen.blit(score2,(380.,210.))

bar1_y += bar1_move

# movement of circle

time_passed = clock.tick(30)

time_sec = time_passed / 1000.0

circle_x += speed_x * time_sec

circle_y += speed_y * time_sec

ai_speed = speed_circ * time_sec

#AI of the computer.

if circle_x >= 305.:

if not bar2_y == circle_y + 7.5:

if bar2_y < circle_y + 7.5:

bar2_y += ai_speed

if bar2_y > circle_y - 42.5:

bar2_y -= ai_speed

else:

bar2_y == circle_y + 7.5

if bar1_y >= 420.: bar1_y = 420.

elif bar1_y <= 10. : bar1_y = 10.

if bar2_y >= 420.: bar2_y = 420.

elif bar2_y <= 10.: bar2_y = 10.

#since i don't know anything about collision, ball hitting bars goes like this.

if circle_x <= bar1_x + 10.:

if circle_y >= bar1_y - 7.5 and circle_y <= bar1_y + 42.5:

circle_x = 20.

speed_x = -speed_x

if circle_x >= bar2_x - 15.:

if circle_y >= bar2_y - 7.5 and circle_y <= bar2_y + 42.5:

circle_x = 605.

speed_x = -speed_x

if circle_x < 5.:

bar2_score += 1

circle_x, circle_y = 320., 232.5

bar1_y,bar_2_y = 215., 215.

elif circle_x > 620.:

bar1_score += 1

circle_x, circle_y = 307.5, 232.5

bar1_y, bar2_y = 215., 215.

if circle_y <= 10.:

speed_y = -speed_y

circle_y = 10.

elif circle_y >= 457.5:

speed_y = -speed_y

circle_y = 457.5

pygame.display.update()

pygame.quit()