# Pygame Cheat Sheet
# This program should show you the basics of using the Pygame library.
# by Al Sweigart http://inventwithpython.com

# Download files from:
#     http://inventwithpython.com/cat.png
#     http://inventwithpython.com/bounce.wav

import pygame, sys
from pygame.locals import *

pygame.init()
fpsClock = pygame.time.Clock()

windowSurfaceObj = pygame.display.set_mode((640, 480))
pygame.display.set_caption('Pygame Cheat Sheet')

catSurfaceObj = pygame.image.load('cat.png')
redColor = pygame.Color(255, 0, 0)
greenColor = pygame.Color(0, 255, 0)
blueColor = pygame.Color(0, 0, 255)
whiteColor = pygame.Color(255, 255, 255)
mousex, mousey = 0, 0

fontObj = pygame.font.Font('freesansbold.ttf', 32)
msg = 'Hello world!'

soundObj = pygame.mixer.Sound('bounce.wav')

while True:
    windowSurfaceObj.fill(whiteColor)

    pygame.draw.polygon(windowSurfaceObj, greenColor, ((146, 0), (291, 106), (236, 277), (56, 277), (0, 106)))
    pygame.draw.circle(windowSurfaceObj, blueColor, (300, 50), 20, 0)
    pygame.draw.ellipse(windowSurfaceObj, redColor, (300, 250, 40, 80), 1)
    pygame.draw.rect(windowSurfaceObj, redColor, (10, 10, 50, 100))
    pygame.draw.line(windowSurfaceObj, blueColor, (60, 160), (120, 60), 4)

    pixArr = pygame.PixelArray(windowSurfaceObj)
    for x in range(100, 200, 4):
        for y in range(100, 200, 4):
            pixArr[x][y] = redColor
    del pixArr


    windowSurfaceObj.blit(catSurfaceObj, (mousex, mousey))

    msgSurfaceObj = fontObj.render(msg, False, blueColor)
    msgRectobj = msgSurfaceObj.get_rect()
    msgRectobj.topleft = (10, 20)
    windowSurfaceObj.blit(msgSurfaceObj, msgRectobj)

    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == MOUSEMOTION:
            mousex, mousey = event.pos
        elif event.type == MOUSEBUTTONUP:
            mousex, mousey = event.pos
            soundObj.play()
            if event.button in (1, 2, 3):
                msg = 'left, middle, or right mouse click'
            elif event.button in (4, 5):
                msg = 'mouse scrolled up or down'

        elif event.type == KEYDOWN:
            if event.key in (K_LEFT, K_RIGHT, K_UP, K_DOWN):
                msg = 'Arrow key pressed.'
            if event.key == K_a:
                msg = '"A" key pressed'
            if event.key == K_ESCAPE:
                pygame.event.post(pygame.event.Event(QUIT))

    pygame.display.update()
    fpsClock.tick(30) # pause to run the loop at 30 frames per second