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import pygame
import random
import math
# Initialize Pygame
pygame.init()
# Screen setup
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("Space Invaders")
# Clock for FPS control
clock = pygame.time.Clock()
# Player
player_width = 40
player_height = 30
player_x = screen_width // 2 - player_width // 2
player_y = screen_height - player_height - 10
player_speed = 5
# Bullet
bullet_width = 5
bullet_height = 15
bullet_speed = 7
bullet_x = 0
bullet_y = player_y
bullet_active = False
# Enemy
enemy_width = 40
enemy_height = 30
enemy_x = random.randint(0, screen_width - enemy_width)
enemy_y = 50
enemy_speed = 3
# Score
score = 0
font = pygame.font.Font(None, 36)
def draw_player(x, y):
pygame.draw.rect(screen, (0, 255, 0), (x, y, player_width, player_height))
def draw_bullet(x, y):
pygame.draw.rect(screen, (255, 255, 0), (x, y, bullet_width, bullet_height))
def draw_enemy(x, y):
pygame.draw.rect(screen, (255, 0, 0), (x, y, enemy_width, enemy_height))
def show_score():
score_text = font.render(f"Score: {score}", True, (255, 255, 255))
screen.blit(score_text, (10, 10))
def is_collision(ex, ey, bx, by):
distance = math.hypot(ex + enemy_width//2 - bx, ey + enemy_height//2 - by)
return distance < 27
# Game loop
running = True
while running:
screen.fill((0, 0, 0)) # Black background
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
# Key states
keys = pygame.key.get_pressed()
if keys[pygame.K_LEFT]:
player_x -= player_speed
if keys[pygame.K_RIGHT]:
player_x += player_speed
if keys[pygame.K_SPACE] and not bullet_active:
bullet_x = player_x + player_width // 2 - bullet_width // 2
bullet_y = player_y
bullet_active = True
# Keep player within bounds
player_x = max(0, min(player_x, screen_width - player_width))
# Bullet movement
if bullet_active:
bullet_y -= bullet_speed
draw_bullet(bullet_x, bullet_y)
if bullet_y < 0:
bullet_active = False
# Enemy movement
enemy_x += enemy_speed
if enemy_x <= 0 or enemy_x >= screen_width - enemy_width:
enemy_speed *= -1
enemy_y += 40
draw_enemy(enemy_x, enemy_y)
# Collision detection
if bullet_active and is_collision(enemy_x, enemy_y, bullet_x, bullet_y):
score += 1
bullet_active = False
enemy_x = random.randint(0, screen_width - enemy_width)
enemy_y = 50
draw_player(player_x, player_y)
show_score()
pygame.display.flip()
clock.tick(60)
pygame.quit()
