Build a Simple Python Airplane Shooter with Pygame – Step‑by‑Step Tutorial

Overview

This guide demonstrates how to build a minimal airplane‑shooting game with Python and the Pygame library, illustrating window creation, sprite handling, user input, collision detection, and sound effects.

Environment

Python 3.6+

Windows/Linux

Installation

pip install pygame

Creating the Game Window

import os
import time
import pygame

SCREEN_WIDTH = 500
SCREEN_HEIGHT = 250
IMG_PATH = os.path.join(os.getcwd(), "img")

def main():
    pygame.display.init()
    screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
    pygame.display.set_caption("python小demo 飞机大战")
    pygame.display.set_icon(pygame.image.load(os.path.join(IMG_PATH, "icon.jpg")))
    background = pygame.image.load(os.path.join(IMG_PATH, "test_bj.png"))
    while True:
        screen.blit(background, (0, 0))
        pygame.display.update()
        time.sleep(0.02)

if __name__ == "__main__":
    main()

Moving the Hero Plane

class HeroPlane(object):
    def __init__(self):
        self.image = pygame.image.load(os.path.join(IMG_PATH, "hero_show_1.png"))
        self.rect = self.image.get_rect()
        self.rect.x = 0
        self.rect.y = int(SCREEN_HEIGHT - self.rect.height) / 2
        self.is_running = True

    def move_level(self, level):
        # keep within screen bounds
        if 0 <= level <= SCREEN_WIDTH - self.rect.width:
            self.rect.x = level
        elif level < 0:
            self.rect.x = 0
        else:
            self.rect.x = SCREEN_WIDTH - self.rect.width

    def move_vertical(self, vertical):
        if 0 <= vertical <= SCREEN_HEIGHT - self.rect.height:
            self.rect.y = vertical
        elif vertical < 0:
            self.rect.y = 0
        else:
            self.rect.y = SCREEN_HEIGHT - self.rect.height

Event Handling and User Control

def event_check():
    global MOUSE_MOVE, KEYDOWN
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == pygame.MOUSEBUTTONDOWN:
            MOUSE_MOVE = True
        elif event.type == pygame.MOUSEBUTTONUP:
            MOUSE_MOVE = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                KEYDOWN = 1
            elif event.key == pygame.K_UP:
                KEYDOWN = 2
            elif event.key == pygame.K_DOWN:
                KEYDOWN = 3
            elif event.key == pygame.K_RIGHT:
                KEYDOWN = 4
        elif event.type == pygame.KEYUP:
            KEYDOWN = 0

    if MOUSE_MOVE:
        x, y = pygame.mouse.get_pos()
        hero.move_level(x)
        hero.move_vertical(y)

    if KEYDOWN:
        if KEYDOWN == 1:
            hero.move_level(hero.rect.x - 5)
        elif KEYDOWN == 2:
            hero.move_vertical(hero.rect.y - 5)
        elif KEYDOWN == 3:
            hero.move_vertical(hero.rect.y + 5)
        else:
            hero.move_level(hero.rect.x + 5)

Collision Detection

def check_crash():
    is_crash = pygame.sprite.collide_rect(hero, enemy)
    if is_crash:
        screen.blit(pygame.image.load(os.path.join(IMG_PATH, "ex_2.png")), (hero.rect.x, hero.rect.y))
        screen.blit(pygame.image.load(os.path.join(IMG_PATH, "ex_2.png")), (enemy.rect.x, enemy.rect.y))
        pygame.mixer.Sound(os.path.join(MUSIC_PATH, "enemy1_down.wav")).play()
        game_over = pygame.font.Font(None, 100)
        game_over = game_over.render("game over", True, (220, 20, 60))
        screen.blit(game_over, (int(SCREEN_WIDTH/2 - game_over.get_width()/2), int(SCREEN_HEIGHT/2)))

Audio Playback

pygame.mixer.init()
pygame.mixer.music.load(os.path.join(MUSIC_PATH, "game_music.ogg"))
pygame.mixer.music.play(loops=-1)

Full Example

The complete source combines window initialization, hero and enemy sprites, event handling, collision detection, and background music into a functional airplane‑shooting game.