# simple test of pygame

# my init shell

import pygame, sys

# Define some colors
black = ( 0, 0, 0)
white = ( 255, 255, 255)
green = ( 0, 255, 0)
red = ( 255, 0, 0)

pygame.init()

# Set the height and width of the screen

size=[640, 480]
screen=pygame.display.set_mode(size)
pygame.display.set_caption("Demo Python Game")

#Loop until the user clicks the close button.
done=False
end = 0

# Used to manage how fast the screen updates
clock=pygame.time.Clock()

# -------- Main Game Loop -----------

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

    # Set the screen background
    screen.fill(white)

    # Draw on the screen several red lines 
    # 5 pixels wide using a loop

 
    pygame.draw.line(screen, red, [410,100],[410,200],7)
    pygame.draw.line(screen, green, [100,100],[600,400],10)
    pygame.draw.rect(screen, black, (400,300,50,50))
    
    y_offset=0
    while y_offset < 100:
        pygame.draw.line(screen,red,[110,110+y_offset],[310,310+y_offset],5)
        y_offset=y_offset+10

       
    
    # ALL CODE TO DRAW SHOULD GO ABOVE THIS COMMENT

    # Limit to 20 frames per second
    clock.tick(20)

    # Go ahead and update the screen with what was drawn.
    pygame.display.flip()


# don't hang on exit with IDLE.
pygame.quit ()