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snakeGame.py
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import pygame
import random
import os
# initializing music
pygame.mixer.init()
# creating colors
white = (255, 255, 255)
red = (255, 0, 0)
green = (0, 200, 0)
yellow = (155, 255, 155)
black = (0, 0, 0)
pygame.init()
# creating game window
screen_width = 900
screen_height = 600
gameWindow = pygame.display.set_mode((screen_width, screen_height))
# for background image
bgimg = pygame.image.load("back.jpg")
bgimg = pygame.transform.scale(
bgimg, (screen_width, screen_height)).convert_alpha()
pygame.display.set_caption("SnakeWithMahesh")
pygame.display.update()
# for showing score on screen
font = pygame.font.SysFont('constantia', 55)
def text_screen(text, color, x, y):
screen_text = font.render(text, True, color)
gameWindow.blit(screen_text, [x, y])
# for ploting snake
def plot_snake(gameWindow, color, snk_list, snake_size):
for x, y in snk_list:
pygame.draw.rect(gameWindow, color, [x, y, snake_size, snake_size])
# for clock in pygame
clock = pygame.time.Clock()
# welcome screen
def welcome():
exit_game = False
while not exit_game:
# gameWindow.fill((250,150,230))
img = pygame.image.load("welcome.jpg")
img = pygame.transform.scale(
img, (screen_width, screen_height)).convert_alpha()
gameWindow.blit(img, (0, 0))
text_screen("Welcome to Snakes!", black, 250, 10)
text_screen("Press Space!", black, 300, 290)
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit_game = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_SPACE:
gameLoop()
pygame.display.update()
clock.tick(60)
pygame.quit()
quit()
# game loop
def gameLoop():
pygame.mixer.music.load("back.mp3")
pygame.mixer.music.play()
# game specific variable
exit_game = False
game_over = False
snake_x = 150
snake_y = 150
snake_size = 10
init_velocity = 2
velocity_x = 0
velocity_y = 0
snk_list = []
snk_length = 1
food_x = random.randint(20, screen_width/2)
food_y = random.randint(20, screen_height/2)
fps = 60
score = 0
if not os.path.exists("hiscore.txt"):
with open("hiscore.txt", "w") as f:
f.write("0")
with open("hiscore.txt", "r") as f:
hiscore = f.read()
while not exit_game:
if game_over:
# gameWindow.fill(white)
img = pygame.image.load("gameOver.jpg")
img = pygame.transform.scale(
img, (screen_width, screen_height)).convert_alpha()
gameWindow.blit(img, (0, 0))
text_screen("Score : " + str(score), red, 350, 10)
text_screen("Press Enter to continue", green, 190, 320)
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit_game = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_RETURN:
welcome()
else:
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit_game = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_RIGHT:
velocity_x = init_velocity
velocity_y = 0
if event.key == pygame.K_LEFT:
velocity_x = -init_velocity
velocity_y = 0
if event.key == pygame.K_UP:
velocity_y = -init_velocity
velocity_x = 0
if event.key == pygame.K_DOWN:
velocity_y = init_velocity
velocity_x = 0
snake_x += velocity_x
snake_y += velocity_y
if abs(snake_x - food_x) < 10 and abs(snake_y - food_y) < 10:
score += 10
# print("Score :",score*10)
food_x = random.randint(20, screen_width/2)
food_y = random.randint(20, screen_height/2)
snk_length += 3
if score > int(hiscore):
hiscore = score
with open("hiscore.txt", "w") as f:
f.write(str(hiscore))
gameWindow.fill(white)
gameWindow.blit(bgimg, (0, 0))
# showing score
text_screen("Score : " + str(score) +
" High Score :" + str(hiscore), yellow, 5, 5)
head = []
head.append(snake_x)
head.append(snake_y)
snk_list.append(head)
if len(snk_list) > snk_length:
del snk_list[0]
if head in snk_list[:-1]:
game_over = True
pygame.mixer.music.load("gameover.mp3")
pygame.mixer.music.play()
if snake_x < 0 or snake_x > screen_width or snake_y < 0 or snake_y > screen_height:
game_over = True
pygame.mixer.music.load("gameover.mp3")
pygame.mixer.music.play()
# print("game over")
plot_snake(gameWindow, black, snk_list, snake_size)
pygame.draw.rect(gameWindow, red, [
food_x, food_y, snake_size, snake_size])
pygame.display.update()
clock.tick(fps)
pygame.quit()
quit()
welcome()
gameLoop()