amberjs 1.17.0

// 元宇宙渲染引擎核心实现

use std::sync::{Arc, RwLock};
use std::collections::{HashMap};
use std::time::Instant;

pub use super::{
    Camera, Light, Material, RenderMode, RenderStats, SceneObject, Transform, XRPlatform,
};
/// 元宇宙引擎配置
#[derive(Debug, Clone)]
pub struct MetaverseConfig {
    /// 渲染模式
    pub render_mode: RenderMode,
    /// 目标帧率
    pub target_fps: u32,
    /// 分辨率 (宽, 高)
    pub resolution: (u32, u32),
    /// 启用多用户
    pub enable_multiuser: bool,
    /// 最大用户数
    pub max_users: u32,
    /// 启用空间音频
    pub enable_spatial_audio: bool,
    /// 启用全息显示
    pub enable_holographic_display: bool,
    /// XR 平台
    pub xr_platform: XRPlatform,
}
impl Default for MetaverseConfig {
    fn default() -> Self {
        Self {
            render_mode: RenderMode::Rasterization,
            target_fps: 90,
            resolution: (1920, 1080),
            enable_multiuser: false,
            max_users: 10,
            enable_spatial_audio: true,
            enable_holographic_display: false,
            xr_platform: XRPlatform::WebXR,
        }
    }
}
/// 元宇宙渲染引擎
pub struct MetaverseEngine {
    /// 配置
    config: MetaverseConfig,
    /// 场景物体
    objects: HashMap<String, SceneObject>,
    /// 光源
    lights: Vec<Light>,
    /// 相机
    camera: Camera,
    /// 渲染统计
    stats: RenderStats,
    /// 是否正在渲染
    rendering: bool,
    /// 上一帧时间
    last_frame_time: Option<Instant>,
    /// 全息引擎引用
    holographic_engine: Option<Arc<RwLock<()>>>,
}
impl MetaverseEngine {
    /// 创建新的元宇宙引擎
    pub fn new(config: MetaverseConfig) -> Result<Self, MetaverseError> {
        Ok(Self {
            config,
            objects: HashMap::new(),
            lights: vec![Light::default()],
            camera: Camera::default(),
            stats: RenderStats::default(),
            rendering: false,
            last_frame_time: None,
            holographic_engine: None,
        })
    }
    /// 获取配置
    pub fn config(&self) -> &MetaverseConfig {
        &self.config
    }
    /// 是否正在渲染
    pub fn is_rendering(&self) -> bool {
        self.rendering
    }
    /// 开始渲染
    pub fn start_rendering(&mut self) -> Result<(), MetaverseError> {
        self.rendering = true;
        self.last_frame_time = Some(Instant::now());
        Ok(())
    }
    /// 停止渲染
    pub fn stop_rendering(&mut self) {
        self.rendering = false;
    }
    /// 渲染一帧
    pub fn render_frame(&self) -> Result<RenderStats, MetaverseError> {
        let start: _ = Instant::now();
        // 模拟渲染工作
        let mut stats = RenderStats::default();
        // 计算三角形数量
        stats.triangles = self.objects.len() as u64 * 1000;
        stats.draw_calls = self.objects.len() as u64;
        // 计算帧时间
        let elapsed: _ = start.elapsed();
        stats.frame_time_ms = elapsed.as_secs_f64() * 1000.0;
        stats.fps = 1000.0 / stats.frame_time_ms.max(0.001);
        stats.latency_ms = elapsed.as_secs_f64() * 1000.0;
        Ok(stats)
    }
    /// 添加场景物体
    pub fn add_object(&mut self, object: SceneObject) {
        self.objects.insert(object.name().to_string(), object);
    }
    /// 移除场景物体
    pub fn remove_object(&mut self, name: &str) -> Option<SceneObject> {
        self.objects.remove(name)
    }
    /// 获取场景物体
    pub fn get_object(&self, name: &str) -> Option<&SceneObject> {
        self.objects.get(name)
    }
    /// 添加光源
    pub fn add_light(&mut self, light: Light) {
        self.lights.push(light);
    }
    /// 设置相机
    pub fn set_camera(&mut self, camera: Camera) {
        self.camera = camera;
    }
    /// 获取相机
    pub fn camera(&self) -> &Camera {
        &self.camera
    }
    /// 获取渲染统计
    pub fn stats(&self) -> &RenderStats {
        &self.stats
    }
    /// 集成全息引擎
    pub fn integrate_holographic<T>(&self, _holographic: &T) -> Result<(), MetaverseError> {
        // 全息引擎集成
        Ok(())
    }
    /// 获取物体数量
    pub fn object_count(&self) -> usize {
        self.objects.len()
    }
}
/// 元宇宙引擎错误
#[derive(Debug, Clone)]
pub enum MetaverseError {
    /// 初始化失败
    InitializationFailed(String),
    /// 渲染失败
    RenderFailed(String),
    /// 资源加载失败
    ResourceLoadFailed(String),
    /// 网络错误
    NetworkError(String),
}
impl std::fmt::Display for MetaverseError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::InitializationFailed(msg) => write!(f, "初始化失败: {}", msg),
            Self::RenderFailed(msg) => write!(f, "渲染失败: {}", msg),
            Self::ResourceLoadFailed(msg) => write!(f, "资源加载失败: {}", msg),
            Self::NetworkError(msg) => write!(f, "网络错误: {}", msg),
        }
    }
}
impl std::error::Error for MetaverseError {}