Game.py

import pygame 
import time
import random


#game_icon_size is ideally 32x32
pygame.init()

crash_sound=pygame.mixer.Sound('Crash.wav')
#btn_sound = pygame.mixer.Sound('btn.wav')
pygame.mixer.music.load('bg.wav')

display_width = 800
display_height = 600

black = (0,0,0)
white = (255,255,255)
red = (255,0,0)
green = (0,255,0)
blue = (0,0,255)
grey = (128,128,128)

dim_red = (200,0,0)
dim_white = (200,200,200)
dim_grey = (110,110,110)
dim_white = (220,220,220)

car_width = 111
bg_width = 327

pause = False
 
gameDisplay = pygame.display.set_mode((display_width ,display_height))
pygame.display.set_caption('The GAME!')
clock = pygame.time.Clock()

carImg = pygame.image.load('car_mod.png')
game_icon = pygame.image.load('polo_ico.png')

pygame.display.set_icon(game_icon)

def things_dodged(count):
    font = pygame.font.SysFont(None,25)
    text = font.render("Dodged: "+str(count)+" objects!",True,white)
    gameDisplay.blit(text,(0,0))

    
def things (thingx,thingy,thingw,thingh,color):
    pygame.draw.rect(gameDisplay,color,[thingx,thingy,thingw,thingh])


    
def car(x,y):
    gameDisplay.blit(carImg,(x,y))

def text_objects(text,font):
    if text == 'START' or text == 'EXIT' or text == 'PAUSED!' or text == 'CONTINUE' or text == 'PLAY AGAIN':
        textSurface = font.render(text ,True,black)
        return textSurface,textSurface.get_rect()
    elif text == 'YOU CRASHED!':
        textSurface = font.render(text ,True,dim_red)
        return textSurface,textSurface.get_rect()
    textSurface = font.render(text ,True,white)
    return textSurface,textSurface.get_rect()

def game_exit():
    pygame.quit()
    quit()


def unpause():
    global pause
    pygame.mixer.music.unpause()
    pause = False


    
def paused():
    pygame.mixer.music.pause()
   
    while pause:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_exit()
            gameDisplay.fill(white)
            largeText = pygame.font.Font('freesansbold.ttf',60)
            TextSurf, TextRect = text_objects('PAUSED!',largeText)
            TextRect.center = ((display_width/2),(display_height/2))
            gameDisplay.blit (TextSurf,TextRect)

            button('CONTINUE',150,450,100,50,dim_grey,grey,unpause)
            button('EXIT',550,450,100,50,dim_grey,grey,game_exit)
                
            pygame.display.update()
            clock.tick(60)


    
def message_display(text):
    largeText = pygame.font.Font('freesansbold.ttf',120)
    TextSurf, TextRect = text_objects(text,largeText)
    TextRect.center = ((display_width/2),(display_height/2))
    gameDisplay.blit (TextSurf,TextRect)

    pygame.display.update()

    time.sleep(2)

    game_loop()

def crash():

    pygame.mixer.music.stop()
    pygame.mixer.Sound.play(crash_sound)
    largeText = pygame.font.Font('freesansbold.ttf',80)
    TextSurf, TextRect = text_objects('YOU CRASHED!',largeText)
    TextRect.center = ((display_width/2),(display_height/2))
    gameDisplay.blit (TextSurf,TextRect)

    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_exit()

            button('PLAY AGAIN',150,450,100,50,dim_white,white,game_loop)
            button('EXIT',550,450,100,50,dim_white,white,game_exit)
                
            pygame.display.update()
            clock.tick(60)



def button(msg,x,y,w,h,color_active,color_inactive,action=None):
        mouse = pygame.mouse.get_pos()

        click = pygame.mouse.get_pressed()
        
        pygame.draw.rect(gameDisplay,color_inactive,(x,y,w,h))
        pygame.draw.rect(gameDisplay,color_inactive,(x,y,w,h))

        if (x+w>mouse[0]>x) and (y+h>mouse[1]>y):
            pygame.draw.rect(gameDisplay,color_active,(x,y,w,h))
            if click[0] == 1:
                  #pygame.mixer.Sound.play(btn_sound)
                  if action!=None:
                      action()
        
        smallText = pygame.font.Font("freesansbold.ttf",10)
        TextSurf, TextRect = text_objects(msg,smallText)
        TextRect.center = (((2*x+w)/2,(2*y+h)/2))
        gameDisplay.blit(TextSurf,TextRect)


def intro_screen():
    intro = True
    while intro:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_exit()
        gameDisplay.fill(black)
        largeText = pygame.font.Font('freesansbold.ttf',60)
        TextSurf, TextRect = text_objects('Welcome to THE GAME!',largeText)
        TextRect.center = ((display_width/2),(display_height/2))
        gameDisplay.blit (TextSurf,TextRect)

        button('START',150,450,100,50,dim_white,white,game_loop)
        button('EXIT',550,450,100,50,dim_white,white,game_exit)
            
        pygame.display.update()
        clock.tick(60)

    
def game_loop():

    global pause
    pygame.mixer.music.play(-1)         # -1 means indefinitely. Set 1 for playing once,2 for twice and henceforth
    x= (display_width * 0.5)
    y = (display_height * 0.5)

    x_change = 0
    y_change = 0

    thing_startx = random.randrange(0,display_width-100)
    thing_starty = -600
    thing_speed = 5
    thing_width = 100
    thing_height = 100

    dodged = 0
    inc_speed = 0

    while True:

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_exit()

            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x_change = -5
                elif event.key == pygame.K_RIGHT:
                    x_change = 5
                #elif event.key == pygame.K_UP:
                 #   y_change = -5
                #elif event.key == pygame.K_DOWN:
                 #   y_change = 5
                if event.key == pygame.K_p:
                    pause=True
                    paused()

            if event.type == pygame.KEYUP:
                if event.key == pygame.K_LEFT or pygame.K_RIGHT or event.key == pygame.K_UP or event.key == pygame.K_DOWN: 
                    x_change = 0
                    y_change = 0


        x+= x_change
        y+= y_change

        gameDisplay.fill(black)
    
        things(thing_startx,thing_starty,thing_width,thing_height,blue)
        thing_starty += thing_speed
        car(x,y)
        things_dodged(dodged)
  
        if x > display_width - car_width or x< 0:
            crash()
        if thing_starty > display_height:
            thing_starty = 0 - thing_height
            dodged+= 1
            inc_speed+=1
            if inc_speed  > 10:
                thing_speed+= 1
                inc_speed = 0
            thing_startx = random.randrange(0,display_width-100)

        if y < thing_starty + thing_height:
            if (x > thing_startx and x < thing_startx + thing_width) or (x+car_width > thing_startx and x+car_width < thing_startx + thing_width):
                crash()
            
        pygame.display.update()
        clock.tick(60)

intro_screen()