main.py

import pygame
import time
import random
import math



#to initialize the pygame module
pygame.init()

# To start the screen at 600X800 resolution.
screen = pygame.display.set_mode((800, 600))

#background Image
background = pygame.image.load('evening_1.jpg').convert()

#Title and Icon
pygame.display.set_caption("Corona Strike 0.0.1")
icon = pygame.image.load('Code_Maniac.jpg')
pygame.display.set_icon(icon)

running = True
pygame.mixer.music.load('background.wav')
pygame.mixer.music.play(-1)

# Game Over
over_font = pygame.font.Font('freesansbold.ttf', 64)

# score functions
score = 0
font = pygame.font.Font('DoubleFeature20.ttf', 48)
textX = 10
textY = 10

#To make 	it full screen - 
#pygame.display.toggle_fullscreen()

#Player - Protogonist
playerImg = pygame.image.load('spaceship48X48.png')
playerX = 400
playerY = 500
coor_player = (playerX, playerY)
player_movX = 0
player_movY = 0

#Bullet - kill la kill
bulletImg = pygame.image.load('bullet_1.png')
bulletX = 0
bulletY = 0
bullet_movY = 5
bullet_state = 'ready'

#level 1 corona-virus
corona_1_Img = pygame.image.load('corona_1.png')
corona_1X = random.randint(100, 600)
corona_1Y = random.randint(50, 150)
corona_movX = 1
corona_movY = 48

def my_score():
	textX = 10
	textY = 10 
	blit_score = font.render("SCORE : " + str(score), True, (255, 255, 255))
	screen.blit(blit_score, (textX, textY))


def game_over_text():
    over_text = over_font.render("GAME OVER", True, (255, 255, 255))
    screen.blit(over_text, (200, 250))


def player(x, y):	
	screen.blit(playerImg, (x, y))


def fire_bullet(x, y):
	global bullet_state # bullet is currently fired. and you can see it	
	if bullet_state == 'fired':
		screen.blit(bulletImg, (x + 10, y - 15))


def corona_1(corona_1X, corona_1Y):	
	screen.blit(corona_1_Img, (corona_1X, corona_1Y))


def isCollision(enemyX, enemyY, bulletX, bulletY):
	distance = math.hypot(enemyX - bulletX, enemyY - bulletY)
	if distance < 27:
		return True
	return False


#main game-loop
while running:

	# Background color
	screen.fill((0,0,0))
	# Background Image
	screen.blit(background, (0, 0))
	

	player(playerX, playerY)
	corona_1(corona_1X, corona_1Y)
	#sleep(5)
	my_score()

	for event in pygame.event.get():
		if event.type == pygame.QUIT:
			running = False
	# if keystroke is pressed check its left or right
		if event.type == pygame.KEYDOWN:
			if event.key == pygame.K_RIGHT:
				player_movX = 2
				print("right")
			elif event.key == pygame.K_LEFT:
				player_movX = -2
				print("left")
			elif event.key == pygame.K_UP:
				player_movY = -2
				print("Up")
			elif event.key == pygame.K_DOWN:
				player_movY = 2
				print("Down")
			elif event.key == pygame.K_SPACE:
	  			print("Shoot.")
	  			if bullet_state == 'ready':
	  				bullet_sound = pygame.mixer.Sound('laser.wav')
	  				bullet_sound.play()
	  				bullet_state = 'fired'
	  				bulletX = playerX
	  				bulletY = playerY
	  				fire_bullet(bulletX, bulletY)
			elif event.key == pygame.K_ESCAPE:
	  			print("Escape key.")
			else:
				pass
		if event.type == pygame.KEYUP:
			if event.key == pygame.K_SPACE:
				print("space released")
			elif event.key == pygame.K_ESCAPE:
				running = False
				print("Existing the Game.")
			elif event.key == pygame.K_RIGHT:
				player_movX = 0
				print("right")
			elif event.key == pygame.K_LEFT:
				player_movX = 0 
				print("left")
			elif event.key == pygame.K_UP:
				player_movY = 0
				print("Up")
			elif event.key == pygame.K_DOWN:
				player_movY = 0
				print("Down")
			

	# Boundary conditions : don't leave the screen player

		#for player
	if playerX <= 0:
		playerX = 0		
	elif playerX >= 752:
		playerX = 752
	if playerY <= 0:
		playerY = 0		
	elif playerY >= 552:
		playerY = 552
	playerX += player_movX
	playerY += player_movY

		#for Bullet
	if bullet_state == 'fired':
		fire_bullet(bulletX, bulletY)
		bulletY -= bullet_movY
	if bulletY <= 0:
		bullet_state = 'ready'
	
		# collision
	if isCollision(corona_1X, corona_1Y, bulletX, bulletY):
		explosion_sound = pygame.mixer.Sound('explosion.wav')
		explosion_sound.play()
		bullet_state = 'ready'
		bulletY = 800
		score += 1
		corona_1X = random.randint(100, 600)
		corona_1Y = random.randint(50, 150)
		print(score)

	if isCollision(corona_1X, corona_1Y, playerX, playerY):
		running = False

		#for corona_1
	if corona_1X <= 0:
		corona_1X = 0
		corona_movX = -corona_movX
		corona_1Y += corona_movY	
	elif corona_1X >= 752:
		corona_1X = 752
		corona_movX = -corona_movX
		corona_1Y += corona_movY
	if corona_1Y <= 0:
		corona_1Y = 0		
	elif corona_1Y >= 552:
		corona_1Y = 552
	corona_1X += corona_movX
	if running == False:
		game_over_text()
	pygame.display.update()
	
time.sleep(0.5)