# Try to keep the ball bouncing
# Ball will lose energy when it touches the ground
#

import pygame
from pygame.locals import *
from sys import exit
#import random

pygame.init()

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

#creating a black background
back = pygame.Surface((640,480)) #background dimensions
background = back.convert()
background.fill((0,0,0)) # background color

# creating first bar
bar = pygame.Surface((50,10)) # bar dimensions
bar1 = bar.convert()
bar1.fill((0,0,255)) #bar color


# creating ball
circ_sur = pygame.Surface((30,30)) # defining surface size allocated for circel
circ = pygame.draw.circle(circ_sur,(0,255,0),(15,15),15) #(screen,color,center,radius) (320,20) ?
circle = circ_sur.convert()
circle.set_colorkey((0,0,0)) # defining the tuple arrangement of color

# Starting Positions of bar and circle and intial speeds
# Defining bar1 inital position
bar1_x = 320.
bar1_y= 240.


# Defining initial ball position
circle_x, circle_y = 15., 30.

# Initial speeds
bar1_move = 0.
speed_x, speed_y, speed_circ = 250., 250., 250.

#clock object
clock = pygame.time.Clock()

#Defining the font
font=pygame.font.SysFont("Calibri",40)

restitution=1.0
count=0

while True:
for event in pygame.event.get():
if event.type == QUIT: # makes sure system exits when closing window
exit()
if event.type == KEYDOWN:
if event.key == K_LEFT:
bar1_move = -ai_speed # when left key is pressed bar1 is moved to the left
elif event.key == K_RIGHT:
bar1_move = ai_speed # when right key is pressed bar1 is moved to the right
# when key press is removed bar stops moving
elif event.type == KEYUP:
if event.key == K_LEFT:
bar1_move = 0.
elif event.key == K_RIGHT:
bar1_move = 0.
gameOver=font.render("Game On",True,(255,255,255))
screen.blit(background,(0,0))
screen.blit(gameOver,(250.,400.))
frame = pygame.draw.rect(screen,(255,255,255),Rect((5,5),(630,470)),2) #? screen.color,position,size
screen.blit(bar1,(bar1_x,bar1_y))
screen.blit(circle,(circle_x,circle_y))

#moves bars with the speed defined above
bar1_x += 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
#A very basic collision definition of circle with bars
#Collision with bar1 ? Not working but was working before
if circle_x >= bar1_x-30 and circle_x <= bar1_x+30.:
if circle_y >= 230. and circle_y <= 250.:
speed_y = -speed_y
#Collision with vertical walls
if circle_x < 15.:
speed_x = -speed_x
elif circle_x > 630.:
speed_x = -speed_x
#Collision with roof
if circle_y <= 10.:
speed_y = -speed_y
#Collision with ground
elif circle_y >= 450:
speed_y = -speed_y *restitution
count+=1
restitution=restitution-count/25.
if abs(speed_y)<ai_speed/15:
gameOver=font.render("GameOver",True,(255,255,255))
if abs(speed_y)<ai_speed/20:
exit()
pygame.display.update()