Space Shooter Game Using Python with Source Code
Overview:
A space shooter game typically involves controlling a spaceship to navigate through space while shooting down enemy ships and avoiding obstacles. It often includes elements such as power-ups, different enemy types, and increasingly challenging levels.
Tools and Libraries:
- Python: The programming language itself.
- Pygame: A popular Python library for creating games, providing functionality for handling graphics, sound, and user input
Key Components:
- Player Ship: The main character controlled by the player, usually equipped with weapons to shoot down enemies.
- Enemies: Various types of enemy ships or obstacles that the player must avoid or destroy.
- Background: Space-themed background graphics to create the illusion of flying through space.
- Score and Health: Tracking the player’s score, health, and other game statistics.
- Sound Effects and Music: Adding audio effects for actions like shooting, explosions, and background music to enhance the gaming experience.
- Level Design: Creating different levels with increasing difficulty, possibly including boss fights and unique challenges.
Steps to Create a Simple Space Shooter Game:
- Set up the Environment: Install Python and Pygame on your system.
- Create the Game Window: Initialize Pygame and set up the main game window.
- Load Assets: Load images/sprites for the player, enemies, background, and other game elements.
- Player Control: Implement code to allow the player to control the spaceship using keyboard inputs.
- Enemy Behavior: Define how enemies move, spawn, and interact with the player.
- Collision Detection: Check for collisions between the player’s ship, enemy ships, and other objects.
- Game Loop: Create a loop that updates the game state, handles user input, and renders graphics.
- Scoring and Health: Implement mechanisms to track the player’s score and health, updating them based on gameplay.
- Game Over: Determine conditions for the game to end, such as when the player’s health reaches zero, and display a game over screen.
- Polish and Testing: Fine-tune the game mechanics, graphics, and sound effects. Test the game thoroughly to ensure smooth gameplay.
Additional Features to Consider:
- Power-ups: Add items that grant the player temporary advantages, such as increased firepower or shields.
- Multiple Levels: Create multiple levels with different backgrounds, enemy types, and challenges.
- Upgrade System: Allow players to upgrade their ship’s weapons, speed, and health between levels.
- High Scores: Implement a high-score system to encourage replayability and competition among players.
- Special Effects: Enhance the game with visual effects like explosions, particle effects, and screen shakes
Resources for Learning :
- Official Pygame Documentation: Provides detailed documentation and examples for using Pygame.
- Online Tutorials: Numerous tutorials are available online that walk you through the process of creating a space shooter game step by step.
- Community Forums: Websites like Stack Overflow and the Pygame community forum are excellent places to ask questions and seek help from experienced developers.
Source Code:
Your download is starting now...
from __future__ import division
import pygame
import random
from os import path
## assets folder
img_dir = path.join(path.dirname(__file__), 'assets')
sound_folder = path.join(path.dirname(__file__), 'sounds')
###############################
## to be placed in "constant.py" later
WIDTH = 480
HEIGHT = 600
FPS = 60
POWERUP_TIME = 5000
BAR_LENGTH = 100
BAR_HEIGHT = 10
# Define Colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
YELLOW = (255, 255, 0)
###############################
###############################
## to placed in "__init__.py" later
## initialize pygame and create window
pygame.init()
pygame.mixer.init() ## For sound
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Space Shooter")
clock = pygame.time.Clock() ## For syncing the FPS
###############################
font_name = pygame.font.match_font('arial')
def main_menu():
global screen
menu_song = pygame.mixer.music.load(path.join(sound_folder, "menu.ogg"))
pygame.mixer.music.play(-1)
title = pygame.image.load(path.join(img_dir, "main.png")).convert()
title = pygame.transform.scale(title, (WIDTH, HEIGHT), screen)
screen.blit(title, (0,0))
pygame.display.update()
while True:
ev = pygame.event.poll()
if ev.type == pygame.KEYDOWN:
if ev.key == pygame.K_RETURN:
break
elif ev.key == pygame.K_q:
pygame.quit()
quit()
elif ev.type == pygame.QUIT:
pygame.quit()
quit()
else:
draw_text(screen, "Press [ENTER] To Begin", 30, WIDTH/2, HEIGHT/2)
draw_text(screen, "or [Q] To Quit", 30, WIDTH/2, (HEIGHT/2)+40)
pygame.display.update()
#pygame.mixer.music.stop()
ready = pygame.mixer.Sound(path.join(sound_folder,'getready.ogg'))
ready.play()
screen.fill(BLACK)
draw_text(screen, "GET READY!", 40, WIDTH/2, HEIGHT/2)
pygame.display.update()
def draw_text(surf, text, size, x, y):
## selecting a cross platform font to display the score
font = pygame.font.Font(font_name, size)
text_surface = font.render(text, True, WHITE) ## True denotes the font to be anti-aliased
text_rect = text_surface.get_rect()
text_rect.midtop = (x, y)
surf.blit(text_surface, text_rect)
def draw_shield_bar(surf, x, y, pct):
# if pct < 0:
# pct = 0
pct = max(pct, 0)
## moving them to top
# BAR_LENGTH = 100
# BAR_HEIGHT = 10
fill = (pct / 100) * BAR_LENGTH
outline_rect = pygame.Rect(x, y, BAR_LENGTH, BAR_HEIGHT)
fill_rect = pygame.Rect(x, y, fill, BAR_HEIGHT)
pygame.draw.rect(surf, GREEN, fill_rect)
pygame.draw.rect(surf, WHITE, outline_rect, 2)
def draw_lives(surf, x, y, lives, img):
for i in range(lives):
img_rect= img.get_rect()
img_rect.x = x + 30 * i
img_rect.y = y
surf.blit(img, img_rect)
def newmob():
mob_element = Mob()
all_sprites.add(mob_element)
mobs.add(mob_element)
class Explosion(pygame.sprite.Sprite):
def __init__(self, center, size):
pygame.sprite.Sprite.__init__(self)
self.size = size
self.image = explosion_anim[self.size][0]
self.rect = self.image.get_rect()
self.rect.center = center
self.frame = 0
self.last_update = pygame.time.get_ticks()
self.frame_rate = 75
def update(self):
now = pygame.time.get_ticks()
if now - self.last_update > self.frame_rate:
self.last_update = now
self.frame += 1
if self.frame == len(explosion_anim[self.size]):
self.kill()
else:
center = self.rect.center
self.image = explosion_anim[self.size][self.frame]
self.rect = self.image.get_rect()
self.rect.center = center
class Player(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
## scale the player img down
self.image = pygame.transform.scale(player_img, (50, 38))
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
self.radius = 20
self.rect.centerx = WIDTH / 2
self.rect.bottom = HEIGHT - 10
self.speedx = 0
self.shield = 100
self.shoot_delay = 250
self.last_shot = pygame.time.get_ticks()
self.lives = 3
self.hidden = False
self.hide_timer = pygame.time.get_ticks()
self.power = 1
self.power_timer = pygame.time.get_ticks()
def update(self):
## time out for powerups
if self.power >=2 and pygame.time.get_ticks() - self.power_time > POWERUP_TIME:
self.power -= 1
self.power_time = pygame.time.get_ticks()
## unhide
if self.hidden and pygame.time.get_ticks() - self.hide_timer > 1000:
self.hidden = False
self.rect.centerx = WIDTH / 2
self.rect.bottom = HEIGHT - 30
self.speedx = 0 ## makes the player static in the screen by default.
# then we have to check whether there is an event hanlding being done for the arrow keys being
## pressed
## will give back a list of the keys which happen to be pressed down at that moment
keystate = pygame.key.get_pressed()
if keystate[pygame.K_LEFT]:
self.speedx = -5
elif keystate[pygame.K_RIGHT]:
self.speedx = 5
#Fire weapons by holding spacebar
if keystate[pygame.K_SPACE]:
self.shoot()
## check for the borders at the left and right
if self.rect.right > WIDTH:
self.rect.right = WIDTH
if self.rect.left < 0:
self.rect.left = 0
self.rect.x += self.speedx
def shoot(self):
## to tell the bullet where to spawn
now = pygame.time.get_ticks()
if now - self.last_shot > self.shoot_delay:
self.last_shot = now
if self.power == 1:
bullet = Bullet(self.rect.centerx, self.rect.top)
all_sprites.add(bullet)
bullets.add(bullet)
shooting_sound.play()
if self.power == 2:
bullet1 = Bullet(self.rect.left, self.rect.centery)
bullet2 = Bullet(self.rect.right, self.rect.centery)
all_sprites.add(bullet1)
all_sprites.add(bullet2)
bullets.add(bullet1)
bullets.add(bullet2)
shooting_sound.play()
""" MOAR POWAH """
if self.power >= 3:
bullet1 = Bullet(self.rect.left, self.rect.centery)
bullet2 = Bullet(self.rect.right, self.rect.centery)
missile1 = Missile(self.rect.centerx, self.rect.top) # Missile shoots from center of ship
all_sprites.add(bullet1)
all_sprites.add(bullet2)
all_sprites.add(missile1)
bullets.add(bullet1)
bullets.add(bullet2)
bullets.add(missile1)
shooting_sound.play()
missile_sound.play()
def powerup(self):
self.power += 1
self.power_time = pygame.time.get_ticks()
def hide(self):
self.hidden = True
self.hide_timer = pygame.time.get_ticks()
self.rect.center = (WIDTH / 2, HEIGHT + 200)
# defines the enemies
class Mob(pygame.sprite.Sprite):
def __init__(self):
pygame.sprite.Sprite.__init__(self)
self.image_orig = random.choice(meteor_images)
self.image_orig.set_colorkey(BLACK)
self.image = self.image_orig.copy()
self.rect = self.image.get_rect()
self.radius = int(self.rect.width *.90 / 2)
self.rect.x = random.randrange(0, WIDTH - self.rect.width)
self.rect.y = random.randrange(-150, -100)
self.speedy = random.randrange(5, 20) ## for randomizing the speed of the Mob
## randomize the movements a little more
self.speedx = random.randrange(-3, 3)
## adding rotation to the mob element
self.rotation = 0
self.rotation_speed = random.randrange(-8, 8)
self.last_update = pygame.time.get_ticks() ## time when the rotation has to happen
def rotate(self):
time_now = pygame.time.get_ticks()
if time_now - self.last_update > 50: # in milliseconds
self.last_update = time_now
self.rotation = (self.rotation + self.rotation_speed) % 360
new_image = pygame.transform.rotate(self.image_orig, self.rotation)
old_center = self.rect.center
self.image = new_image
self.rect = self.image.get_rect()
self.rect.center = old_center
def update(self):
self.rotate()
self.rect.x += self.speedx
self.rect.y += self.speedy
## now what if the mob element goes out of the screen
if (self.rect.top > HEIGHT + 10) or (self.rect.left < -25) or (self.rect.right > WIDTH + 20):
self.rect.x = random.randrange(0, WIDTH - self.rect.width)
self.rect.y = random.randrange(-100, -40)
self.speedy = random.randrange(1, 8) ## for randomizing the speed of the Mob
## defines the sprite for Powerups
class Pow(pygame.sprite.Sprite):
def __init__(self, center):
pygame.sprite.Sprite.__init__(self)
self.type = random.choice(['shield', 'gun'])
self.image = powerup_images[self.type]
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
## place the bullet according to the current position of the player
self.rect.center = center
self.speedy = 2
def update(self):
"""should spawn right in front of the player"""
self.rect.y += self.speedy
## kill the sprite after it moves over the top border
if self.rect.top > HEIGHT:
self.kill()
## defines the sprite for bullets
class Bullet(pygame.sprite.Sprite):
def __init__(self, x, y):
pygame.sprite.Sprite.__init__(self)
self.image = bullet_img
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
## place the bullet according to the current position of the player
self.rect.bottom = y
self.rect.centerx = x
self.speedy = -10
def update(self):
"""should spawn right in front of the player"""
self.rect.y += self.speedy
## kill the sprite after it moves over the top border
if self.rect.bottom < 0:
self.kill()
## now we need a way to shoot
## lets bind it to "spacebar".
## adding an event for it in Game loop
## FIRE ZE MISSILES
class Missile(pygame.sprite.Sprite):
def __init__(self, x, y):
pygame.sprite.Sprite.__init__(self)
self.image = missile_img
self.image.set_colorkey(BLACK)
self.rect = self.image.get_rect()
self.rect.bottom = y
self.rect.centerx = x
self.speedy = -10
def update(self):
"""should spawn right in front of the player"""
self.rect.y += self.speedy
if self.rect.bottom < 0:
self.kill()
###################################################
## Load all game images
background = pygame.image.load(path.join(img_dir, 'starfield.png')).convert()
background_rect = background.get_rect()
## ^^ draw this rect first
player_img = pygame.image.load(path.join(img_dir, 'playerShip1_orange.png')).convert()
player_mini_img = pygame.transform.scale(player_img, (25, 19))
player_mini_img.set_colorkey(BLACK)
bullet_img = pygame.image.load(path.join(img_dir, 'laserRed16.png')).convert()
missile_img = pygame.image.load(path.join(img_dir, 'missile.png')).convert_alpha()
# meteor_img = pygame.image.load(path.join(img_dir, 'meteorBrown_med1.png')).convert()
meteor_images = []
meteor_list = [
'meteorBrown_big1.png',
'meteorBrown_big2.png',
'meteorBrown_med1.png',
'meteorBrown_med3.png',
'meteorBrown_small1.png',
'meteorBrown_small2.png',
'meteorBrown_tiny1.png'
]
for image in meteor_list:
meteor_images.append(pygame.image.load(path.join(img_dir, image)).convert())
## meteor explosion
explosion_anim = {}
explosion_anim['lg'] = []
explosion_anim['sm'] = []
explosion_anim['player'] = []
for i in range(9):
filename = 'regularExplosion0{}.png'.format(i)
img = pygame.image.load(path.join(img_dir, filename)).convert()
img.set_colorkey(BLACK)
## resize the explosion
img_lg = pygame.transform.scale(img, (75, 75))
explosion_anim['lg'].append(img_lg)
img_sm = pygame.transform.scale(img, (32, 32))
explosion_anim['sm'].append(img_sm)
## player explosion
filename = 'sonicExplosion0{}.png'.format(i)
img = pygame.image.load(path.join(img_dir, filename)).convert()
img.set_colorkey(BLACK)
explosion_anim['player'].append(img)
## load power ups
powerup_images = {}
powerup_images['shield'] = pygame.image.load(path.join(img_dir, 'shield_gold.png')).convert()
powerup_images['gun'] = pygame.image.load(path.join(img_dir, 'bolt_gold.png')).convert()
###################################################
###################################################
### Load all game sounds
shooting_sound = pygame.mixer.Sound(path.join(sound_folder, 'pew.wav'))
missile_sound = pygame.mixer.Sound(path.join(sound_folder, 'rocket.ogg'))
expl_sounds = []
for sound in ['expl3.wav', 'expl6.wav']:
expl_sounds.append(pygame.mixer.Sound(path.join(sound_folder, sound)))
## main background music
#pygame.mixer.music.load(path.join(sound_folder, 'tgfcoder-FrozenJam-SeamlessLoop.ogg'))
pygame.mixer.music.set_volume(0.2) ## simmered the sound down a little
player_die_sound = pygame.mixer.Sound(path.join(sound_folder, 'rumble1.ogg'))
###################################################
## TODO: make the game music loop over again and again. play(loops=-1) is not working
# Error :
# TypeError: play() takes no keyword arguments
#pygame.mixer.music.play()
#############################
## Game loop
running = True
menu_display = True
while running:
if menu_display:
main_menu()
pygame.time.wait(3000)
#Stop menu music
pygame.mixer.music.stop()
#Play the gameplay music
pygame.mixer.music.load(path.join(sound_folder, 'tgfcoder-FrozenJam-SeamlessLoop.ogg'))
pygame.mixer.music.play(-1) ## makes the gameplay sound in an endless loop
menu_display = False
## group all the sprites together for ease of update
all_sprites = pygame.sprite.Group()
player = Player()
all_sprites.add(player)
## spawn a group of mob
mobs = pygame.sprite.Group()
for i in range(8): ## 8 mobs
# mob_element = Mob()
# all_sprites.add(mob_element)
# mobs.add(mob_element)
newmob()
## group for bullets
bullets = pygame.sprite.Group()
powerups = pygame.sprite.Group()
#### Score board variable
score = 0
#1 Process input/events
clock.tick(FPS) ## will make the loop run at the same speed all the time
for event in pygame.event.get(): # gets all the events which have occured till now and keeps tab of them.
## listening for the the X button at the top
if event.type == pygame.QUIT:
running = False
## Press ESC to exit game
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
running = False
# ## event for shooting the bullets
# elif event.type == pygame.KEYDOWN:
# if event.key == pygame.K_SPACE:
# player.shoot() ## we have to define the shoot() function
#2 Update
all_sprites.update()
## check if a bullet hit a mob
## now we have a group of bullets and a group of mob
hits = pygame.sprite.groupcollide(mobs, bullets, True, True)
## now as we delete the mob element when we hit one with a bullet, we need to respawn them again
## as there will be no mob_elements left out
for hit in hits:
score += 50 - hit.radius ## give different scores for hitting big and small metoers
random.choice(expl_sounds).play()
# m = Mob()
# all_sprites.add(m)
# mobs.add(m)
expl = Explosion(hit.rect.center, 'lg')
all_sprites.add(expl)
if random.random() > 0.9:
pow = Pow(hit.rect.center)
all_sprites.add(pow)
powerups.add(pow)
newmob() ## spawn a new mob
## ^^ the above loop will create the amount of mob objects which were killed spawn again
#########################
## check if the player collides with the mob
hits = pygame.sprite.spritecollide(player, mobs, True, pygame.sprite.collide_circle) ## gives back a list, True makes the mob element disappear
for hit in hits:
player.shield -= hit.radius * 2
expl = Explosion(hit.rect.center, 'sm')
all_sprites.add(expl)
newmob()
if player.shield <= 0:
player_die_sound.play()
death_explosion = Explosion(player.rect.center, 'player')
all_sprites.add(death_explosion)
# running = False ## GAME OVER 3:D
player.hide()
player.lives -= 1
player.shield = 100
## if the player hit a power up
hits = pygame.sprite.spritecollide(player, powerups, True)
for hit in hits:
if hit.type == 'shield':
player.shield += random.randrange(10, 30)
if player.shield >= 100:
player.shield = 100
if hit.type == 'gun':
player.powerup()
## if player died and the explosion has finished, end game
if player.lives == 0 and not death_explosion.alive():
running = False
# menu_display = True
# pygame.display.update()
#3 Draw/render
screen.fill(BLACK)
## draw the stargaze.png image
screen.blit(background, background_rect)
all_sprites.draw(screen)
draw_text(screen, str(score), 18, WIDTH / 2, 10) ## 10px down from the screen
draw_shield_bar(screen, 5, 5, player.shield)
# Draw lives
draw_lives(screen, WIDTH - 100, 5, player.lives, player_mini_img)
## Done after drawing everything to the screen
pygame.display.flip()
pygame.quit()
Output:
More Projects:
projects
Number Guessing Game Using HTML CSS And JavaScript
Build a Quiz Game Using HTML CSS and JavaScript Introduction Hello coders, you might have played various games, but were you aware that you can
October 17, 2024
No Comments
projects
Emoji Catcher Game Using HTML CSS and JavaScript
Emoji Catcher Game Using HTML CSS and JavaScript Introduction Hello Coders, Welcome to another new blog. In this article we’ve made a emoji catcher game.
October 17, 2024
No Comments
projects
Typing Challenge Using HTML CSS and JavaScript with complete source code
Typing Challenge Using HTML CSS and JavaScript Introduction Hello friends, all you developer friends are welcome to our new project. If you are also new
October 17, 2024
No Comments
projects
Breakout Game Using HTML CSS and JavaScript With Source Code
Breakout Game Using HTML CSS and JavaScript With Source Code Introduction Hello friends, welcome to today’s new blog post. All of you are welcome. Today
October 17, 2024
No Comments
projects
Digital and Analog Clock using HTML CSS and JavaScript
Digital and Analog Clock using HTML CSS and JavaScript Introduction : This project is a digital clock and stopwatch system, which allows the user to
October 17, 2024
No Comments
projects
Coffee Shop Website using HTML CSS and JavaScript
Coffee Shop Website using HTML, CSS & JavaScript Introduction : This project is a website for coffee house business. It uses HTML for the structure,
October 17, 2024
No Comments
Get Huge Discounts
More Python Projects
