import pygame import sys import random import math # 初始化pygame pygame.init() # 游戏常量 SCREEN_WIDTH = 800 SCREEN_HEIGHT = 600 FPS = 60 # 颜色定义 WHITE = (255, 255, 255) BLACK = (0, 0, 0) RED = (255, 0, 0) GREEN = (0, 255, 0) BLUE = (0, 100, 255) YELLOW = (255, 255, 0) class Player: def __init__(self, x, y): self.x = x self.y = y self.width = 40 self.height = 30 self.speed = 5 self.health = 100 self.max_health = 100 def draw(self, screen): # 绘制玩家飞船（三角形） points = [ (self.x, self.y - self.height // 2), # 顶部 (self.x - self.width // 2, self.y + self.height // 2), # 左下 (self.x + self.width // 2, self.y + self.height // 2) # 右下 ] pygame.draw.polygon(screen, BLUE, points) # 绘制血条 bar_width = 50 bar_height = 5 pygame.draw.rect(screen, RED, (self.x - bar_width // 2, self.y - 25, bar_width, bar_height)) health_width = int(bar_width * (self.health / self.max_health)) pygame.draw.rect(screen, GREEN, (self.x - bar_width // 2, self.y - 25, health_width, bar_height)) def move(self, dx, dy): self.x = max(self.width // 2, min(SCREEN_WIDTH - self.width // 2, self.x + dx)) self.y = max(self.height // 2, min(SCREEN_HEIGHT - self.height // 2, self.y + dy)) def get_rect(self): return pygame.Rect(self.x - self.width // 2, self.y - self.height // 2, self.width, self.height) class Bullet: def __init__(self, x, y, angle=0): self.x = x self.y = y self.radius = 3 self.speed = 8 self.angle = angle self.dx = math.sin(math.radians(angle)) * self.speed self.dy = -math.cos(math.radians(angle)) * self.speed def update(self): self.x += self.dx self.y += self.dy def draw(self, screen): pygame.draw.circle( screen, YELLOW, (int(self.x), int(self.y)), self.radius) def is_off_screen(self): return (self.x < 0 or self.x > SCREEN_WIDTH or self.y < 0 or self.y > SCREEN_HEIGHT) class Enemy: def __init__(self): self.radius = 20 # 从屏幕上方随机位置生成 self.x = random.randint(self.radius, SCREEN_WIDTH - self.radius) self.y = -self.radius self.speed = random.uniform(1, 3) self.health = 20 def update(self): self.y += self.speed def draw(self, screen): pygame.draw.circle( screen, RED, (int(self.x), int(self.y)), self.radius) # 绘制敌人血条 if self.health < 20: bar_width = 40 bar_height = 4 pygame.draw.rect(screen, RED, (self.x - bar_width // 2, self.y - 30, bar_width, bar_height)) health_width = int(bar_width * (self.health / 20)) pygame.draw.rect(screen, GREEN, (self.x - bar_width // 2, self.y - 30, health_width, bar_height)) def is_off_screen(self): return self.y > SCREEN_HEIGHT + self.radius def get_rect(self): return pygame.Rect(self.x - self.radius, self.y - self.radius, self.radius * 2, self.radius * 2) class Game: def __init__(self): self.screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT)) pygame.display.set_caption("2D 射击游戏") self.clock = pygame.time.Clock() self.font = pygame.font.Font(None, 36) self.small_font = pygame.font.Font(None, 24) # 游戏对象 self.player = Player(SCREEN_WIDTH // 2, SCREEN_HEIGHT - 50) self.bullets = [] self.enemies = [] # 游戏状态 self.score = 0 self.game_over = False self.enemy_spawn_timer = 0 self.shoot_cooldown = 0 def handle_events(self): for event in pygame.event.get(): if event.type == pygame.QUIT: return False elif event.type == pygame.KEYDOWN: if event.key == pygame.K_SPACE and not self.game_over: self.shoot() elif event.key == pygame.K_r and self.game_over: self.restart_game() return True def shoot(self): if self.shoot_cooldown <= 0: # 从玩家位置发射子弹 bullet = Bullet(self.player.x, self.player.y - self.player.height // 2) self.bullets.append(bullet) self.shoot_cooldown = 10 # 射击冷却时间 def update(self): if self.game_over: return # 处理按键输入 keys = pygame.key.get_pressed() dx, dy = 0, 0 if keys[pygame.K_LEFT] or keys[pygame.K_a]: dx = -self.player.speed if keys[pygame.K_RIGHT] or keys[pygame.K_d]: dx = self.player.speed if keys[pygame.K_UP] or keys[pygame.K_w]: dy = -self.player.speed if keys[pygame.K_DOWN] or keys[pygame.K_s]: dy = self.player.speed self.player.move(dx, dy) # 更新射击冷却 if self.shoot_cooldown > 0: self.shoot_cooldown -= 1 # 生成敌人 self.enemy_spawn_timer += 1 if self.enemy_spawn_timer >= 60: # 每秒生成一个敌人 self.enemies.append(Enemy()) self.enemy_spawn_timer = 0 # 更新子弹 for bullet in self.bullets[:]: bullet.update() if bullet.is_off_screen(): self.bullets.remove(bullet) # 更新敌人 for enemy in self.enemies[:]: enemy.update() if enemy.is_off_screen(): self.enemies.remove(enemy) # 碰撞检测 - 子弹击中敌人 for bullet in self.bullets[:]: for enemy in self.enemies[:]: if self.check_collision(bullet, enemy): if bullet in self.bullets: self.bullets.remove(bullet) enemy.health -= 10 if enemy.health <= 0: self.enemies.remove(enemy) self.score += 10 # 碰撞检测 - 玩家与敌人 player_rect = self.player.get_rect() for enemy in self.enemies[:]: if player_rect.colliderect(enemy.get_rect()): self.player.health -= 1 if enemy in self.enemies: self.enemies.remove(enemy) if self.player.health <= 0: self.game_over = True def check_collision(self, bullet, enemy): distance = math.sqrt((bullet.x - enemy.x) ** 2 + (bullet.y - enemy.y) ** 2) return distance < bullet.radius + enemy.radius def draw(self): self.screen.fill(BLACK) # 绘制游戏对象 self.player.draw(self.screen) for bullet in self.bullets: bullet.draw(self.screen) for enemy in self.enemies: enemy.draw(self.screen) # 绘制UI score_text = self.font.render(f"分数: {self.score}", True, WHITE) self.screen.blit(score_text, (10, 10)) # 绘制操作说明 if not self.game_over: controls_text = self.small_font.render( "WASD/方向键移动，空格键射击", True, WHITE) self.screen.blit(controls_text, (SCREEN_WIDTH // 2 - controls_text.get_width() // 2, 10)) # 游戏结束画面 if self.game_over: game_over_text = self.font.render("游戏结束!", True, RED) score_text = self.font.render(f"最终分数: {self.score}", True, WHITE) restart_text = self.font.render("按 R 重新开始", True, WHITE) self.screen.blit(game_over_text, (SCREEN_WIDTH // 2 - game_over_text.get_width() // 2, SCREEN_HEIGHT // 2 - 60)) self.screen.blit(score_text, (SCREEN_WIDTH // 2 - score_text.get_width() // 2, SCREEN_HEIGHT // 2)) self.screen.blit(restart_text, (SCREEN_WIDTH // 2 - restart_text.get_width() // 2, SCREEN_HEIGHT // 2 + 60)) pygame.display.flip() def restart_game(self): self.player = Player(SCREEN_WIDTH // 2, SCREEN_HEIGHT - 50) self.bullets = [] self.enemies = [] self.score = 0 self.game_over = False self.enemy_spawn_timer = 0 self.shoot_cooldown = 0 def run(self): running = True while running: running = self.handle_events() self.update() self.draw() self.clock.tick(FPS) pygame.quit() sys.exit() if __name__ == "__main__": game = Game() game.run()