import pygame import math import random # --- 初始化 --- pygame.init() WIDTH, HEIGHT = 800, 600 screen = pygame.display.set_mode((WIDTH, HEIGHT)) pygame.display.set_caption("纯Pygame 3D枪战 - Raycasting FPS") clock = pygame.time.Clock() # 颜色 SKY_COLOR = (50, 50, 80) FLOOR_COLOR = (40, 40, 40) WALL_COLOR_DARK = (100, 100, 100) WALL_COLOR_LIGHT = (150, 150, 150) CROSSHAIR_COLOR = (255, 255, 255) UI_COLOR = (255, 255, 255) FONT = pygame.font.SysFont("consolas", 30) BIG_FONT = pygame.font.SysFont("consolas", 60) # 地图 (1是墙, 0是空地) MAP = [ [1,1,1,1,1,1,1,1,1,1], [1,0,0,0,0,0,0,0,0,1], [1,0,1,1,0,1,0,1,0,1], [1,0,1,0,0,0,0,1,0,1], [1,0,0,0,1,0,1,0,0,1], [1,0,1,0,1,0,1,0,1,1], [1,0,1,0,0,0,0,0,0,1], [1,0,0,0,1,1,0,1,0,1], [1,0,0,0,0,0,0,0,0,1], [1,1,1,1,1,1,1,1,1,1], ] MAP_W, MAP_H = len(MAP[0]), len(MAP) # --- 3D 核心类 --- class Player: def __init__(self): self.x = 1.5 self.y = 1.5 self.angle = 0.0 # 弧度 self.speed = 0.08 self.rot_speed = 0.05 self.hp = 100 self.cooldown = 0 def move(self): keys = pygame.key.get_pressed() dx, dy = 0, 0 if keys[pygame.K_w]: dx += math.cos(self.angle) * self.speed dy += math.sin(self.angle) * self.speed if keys[pygame.K_s]: dx -= math.cos(self.angle) * self.speed dy -= math.sin(self.angle) * self.speed if keys[pygame.K_a]: dx += math.cos(self.angle - math.pi/2) * self.speed dy += math.sin(self.angle - math.pi/2) * self.speed if keys[pygame.K_d]: dx += math.cos(self.angle + math.pi/2) * self.speed dy += math.sin(self.angle + math.pi/2) * self.speed # 简单的墙壁碰撞 if MAP[int(self.y)][int(self.x + dx)] == 0: self.x += dx if MAP[int(self.y + dy)][int(self.x)] == 0: self.y += dy # 旋转 if keys[pygame.K_LEFT]: self.angle -= self.rot_speed if keys[pygame.K_RIGHT]: self.angle += self.rot_speed if self.cooldown > 0: self.cooldown -= 1 class Enemy: def __init__(self, x, y): self.x = x self.y = y self.alive = True self.speed = 0.03 def update(self, player_x, player_y): if not self.alive: return dx = player_x - self.x dy = player_y - self.y dist = math.hypot(dx, dy) if dist > 1.0: nx = self.x + (dx / dist) * self.speed ny = self.y + (dy / dist) * self.speed if MAP[int(ny)][int(nx)] == 0: self.x = nx self.y = ny return dist # --- 渲染与主逻辑 --- def main(): player = Player() enemies = [Enemy(3.5, 3.5), Enemy(7.5, 7.5), Enemy(2.5, 8.5)] game_over = False score = 0 running = True while running: clock.tick(60) for event in pygame.event.get(): if event.type == pygame.QUIT: running = False if event.type == pygame.KEYDOWN and game_over: if event.key == pygame.K_r: main(); return if not game_over: player.move() # 射击检测 (鼠标左键) if pygame.mouse.get_pressed()[0] and player.cooldown <= 0: player.cooldown = 15 # 向前发射一条射线 hit_enemy = False for e in enemies: if not e.alive: continue dx = e.x - player.x dy = e.y - player.y dist = math.hypot(dx, dy) angle_to_enemy = math.atan2(dy, dx) diff = (angle_to_enemy - player.angle + math.pi) % (2*math.pi) - math.pi # 如果角度差很小，且距离不远，判定击中 if abs(diff) < 0.2 and dist < 8: e.alive = False score += 100 hit_enemy = True break # 敌人攻击 for e in enemies: dist = e.update(player.x, player.y) if e.alive and dist < 1.2: player.hp -= 1 if player.hp <= 0: game_over = True # --- 3D 渲染 (Raycasting) --- # 1. 画天空和地板 screen.fill(SKY_COLOR, (0, 0, WIDTH, HEIGHT // 2)) screen.fill(FLOOR_COLOR, (0, HEIGHT // 2, WIDTH, HEIGHT // 2)) # 2. 画墙 FOV = math.pi / 3 # 60度视野 num_rays = WIDTH z_buffer = [] # 记录每列的深度，用于遮挡敌人 for i in range(num_rays): ray_angle = player.angle - FOV / 2 + (i / num_rays) * FOV sin_a = math.sin(ray_angle) cos_a = math.cos(ray_angle) dist = 0 hit_wall = False while not hit_wall and dist < 20: dist += 0.05 test_x = int(player.x + cos_a * dist) test_y = int(player.y + sin_a * dist) if test_x < 0 or test_x >= MAP_W or test_y < 0 or test_y >= MAP_H: hit_wall = True dist = 20 elif MAP[test_y][test_x] == 1: hit_wall = True # 修复鱼眼效应 corr_dist = dist * math.cos(ray_angle - player.angle) z_buffer.append(corr_dist) # 计算墙的高度和颜色 wall_height = int(HEIGHT / corr_dist) shade = max(50, min(255, int(255 / corr_dist))) color = (shade, shade, shade) top = (HEIGHT - wall_height) // 2 bottom = top + wall_height pygame.draw.line(screen, color, (i, top), (i, bottom)) # 3. 画敌人 (从远到近排序) visible_enemies = [] for e in enemies: if not e.alive: continue dx = e.x - player.x dy = e.y - player.y dist = math.hypot(dx, dy) angle_to_enemy = math.atan2(dy, dx) diff = (angle_to_enemy - player.angle + math.pi) % (2*math.pi) - math.pi if abs(diff) < FOV / 2: screen_x = int((0.5 + diff / FOV) * WIDTH) size = int(HEIGHT / dist) visible_enemies.append((dist, screen_x, size, e)) visible_enemies.sort(reverse=True) # 远处的先画 for dist, screen_x, size, e in visible_enemies: half_size = size // 2 top = (HEIGHT - size) // 2 bottom = top + size left = screen_x - half_size right = screen_x + half_size # 简单的深度遮挡 if 0 <= screen_x < WIDTH and z_buffer[screen_x] > dist: pygame.draw.rect(screen, (200, 50, 50), (left, top, size, size)) # 画个眼睛 eye_size = max(2, size // 5) pygame.draw.circle(screen, (255,255,255), (screen_x - eye_size, top + size//3), eye_size) pygame.draw.circle(screen, (255,255,255), (screen_x + eye_size, top + size//3), eye_size) # UI cross_len = 10 pygame.draw.line(screen, CROSSHAIR_COLOR, (WIDTH//2 - cross_len, HEIGHT//2), (WIDTH//2 + cross_len, HEIGHT//2), 2) pygame.draw.line(screen, CROSSHAIR_COLOR, (WIDTH//2, HEIGHT//2 - cross_len), (WIDTH//2, HEIGHT//2 + cross_len), 2) hp_txt = FONT.render(f"HP: {max(0, player.hp)}", True, UI_COLOR) score_txt = FONT.render(f"SCORE: {score}", True, UI_COLOR) screen.blit(hp_txt, (10, 10)) screen.blit(score_txt, (WIDTH - 180, 10)) if game_over: over_txt = BIG_FONT.render("YOU DIED", True, (255, 50, 50)) rect = over_txt.get_rect(center=(WIDTH//2, HEIGHT//2 - 30)) screen.blit(over_txt, rect) restart_txt = FONT.render("Press R to Restart", True, UI_COLOR) r_rect = restart_txt.get_rect(center=(WIDTH//2, HEIGHT//2 + 30)) screen.blit(restart_txt, r_rect) pygame.display.flip() pygame.quit() if __name__ == "__main__": main()