Shooting Game - Day 1

from pygame import *

# Background music
mixer.init()
mixer.music.load('space.ogg')
mixer.music.play()

# Load images
img_back = "galaxy.jpg" #game background
img_hero = "rocket.png" #hero

# Create a window
win_width = 700
win_height = 500
window = display.set_mode((win_width, win_height))
display.set_caption("Space shooter")
background = transform.scale(image.load(img_back), (win_width, win_height))

# GameSprite class - inheriting from class Sprite
class GameSprite(sprite.Sprite):
    def __init__(self, player_image, player_x, player_y, size_x, size_y, player_speed):
        # Call for the class (Sprite) constructor:
        sprite.Sprite.__init__(self)

        # Every sprite must store the image property
        self.image = transform.scale(image.load(player_image), (size_x, size_y))
        self.speed = player_speed

        # Every sprite must have the rect property – the rectangle it is fitted in
        self.rect = self.image.get_rect()
        self.rect.x = player_x
        self.rect.y = player_y

    # Puts the character in the window
    def reset(self):
        window.blit(self.image, (self.rect.x, self.rect.y))

# Player class - inherits from GameSprite
class Player(GameSprite):
    # Function to control the sprite with arrow keys - only LEFT and RIGHT needed
    def update(self):
        keys = key.get_pressed()
        if keys[K_LEFT] and self.rect.x > 5:
            self.rect.x -= self.speed
        if keys[K_RIGHT] and self.rect.x < win_width - 80:
            self.rect.x += self.speed

    # Function to "shoot" (use the player position to create a bullet there)
    def fire(self):
        pass

# Create sprites
ship = Player(img_hero, 5, win_height - 100, 80, 100, 10)

# The "game is over" variable
# As soon as it becomes True, all sprites stop working in the main loop
finish = False

# Main game loop
# The game is reset by the window close button
run = True

while run:
    # "Close" button press event
    for e in event.get():
        if e.type == QUIT:
            run = False

    if not finish:
        # Update the background
        window.blit(background,(0,0))

        # Start sprite movements
        ship.update()

        # Update them in a new location in each loop iteration
        ship.reset()

        display.update()

    # The loop is executed each 0.05 sec
    time.delay(50)