《盗梦空间》与嵌套NFT：多层梦境作为递归铭文的元数据架构

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

/// @title 递归梦境NFT（RecursiveDreamNFT）
/// @notice 实现多层嵌套的元数据引用，模拟《盗梦空间》的梦境堆栈
contract RecursiveDreamNFT {
    // 梦境层级的深度映射
    struct DreamLayer {
        uint256 depth;           // 层级深度（0=现实, 1-4=梦境）
        address parentToken;     // 父层梦境合约地址
        uint256 parentTokenId;   // 父层梦境Token ID
        string metadataURI;      // 本层元数据URI
        bytes32 dreamHash;       // 梦境数据的哈希验证
        uint256 timestampKick;   // 唤醒时间戳（Kick机制）
        bool isLimbo;            // 是否已进入混沌域（Limbo）
    }

    // Token ID => 梦境层
    mapping(uint256 => DreamLayer) public dreamLayers;
    // 用户的图腾验证映射
    mapping(address => bytes32) public totemHashes;
    
    uint256 public nextTokenId = 1;
    uint256 public constant MAX_DEPTH = 4; // 最多4层嵌套

    event DreamCreated(uint256 tokenId, uint256 depth, address indexed creator);
    event KickTriggered(uint256 tokenId, uint256 indexed layer);

    /// @notice 创建新的梦境嵌套NFT
    /// @param parentToken 父层合约（0地址表示最外层）
    /// @param parentTokenId 父层Token ID
    /// @param metadataURI 元数据URI（可递归引用其他铭文）
    /// @param dreamHash 梦境数据的哈希指纹
    function createDreamLayer(
        address parentToken,
        uint256 parentTokenId,
        string calldata metadataURI,
        bytes32 dreamHash
    ) external returns (uint256) {
        uint256 newDepth = 0;
        
        // 如果有父层，递增深度
        if (parentToken != address(0)) {
            DreamLayer storage parent = dreamLayers[parentTokenId];
            require(parent.depth < MAX_DEPTH, "DreamLayer: 深度已达极限，即将进入Limbo");
            newDepth = parent.depth + 1;
        }

        uint256 tokenId = nextTokenId++;
        dreamLayers[tokenId] = DreamLayer({
            depth: newDepth,
            parentToken: parentToken,
            parentTokenId: parentTokenId,
            metadataURI: metadataURI,
            dreamHash: dreamHash,
            timestampKick: block.timestamp + 1 hours, // 默认1小时后唤醒
            isLimbo: newDepth == MAX_DEPTH
        });

        emit DreamCreated(tokenId, newDepth, msg.sender);
        return tokenId;
    }

    /// @notice 触发Kick唤醒机制，销毁当前层并返回父层
    /// @param tokenId 需要唤醒的Token ID
    function triggerKick(uint256 tokenId) external {
        DreamLayer storage layer = dreamLayers[tokenId];
        require(!layer.isLimbo, "Limbo: 需要图腾验证才能唤醒");
        require(block.timestamp >= layer.timestampKick, "Kick: 时间膨胀未完成");

        emit KickTriggered(tokenId, layer.depth);
        delete dreamLayers[tokenId];
    }

    /// @notice 设置用户的图腾验证哈希
    function setTotem(bytes32 _totemHash) external {
        totemHashes[msg.sender] = _totemHash;
    }

    /// @notice 验证图腾以确认是否在现实中
    function verifyTotem(bytes32 _candidateHash) external view returns (bool) {
        return totemHashes[msg.sender] == _candidateHash;
    }
}

"""
递归铭文解析器（Recursive Inscription Parser）
模拟《盗梦空间》中多层梦境的数据遍历机制
"""

import hashlib
import json
from typing import Optional, Dict, List

class DreamLayer:
    """
    梦境层的数据结构，对应Ordinals递归铭文中的一层
    """
    def __init__(
        self,
        layer_id: str,
        depth: int,
        parent_layer_id: Optional[str],
        metadata_uri: str,
        timestamp: int
    ):
        self.layer_id = layer_id
        self.depth = depth
        self.parent_layer_id = parent_layer_id
        self.metadata_uri = metadata_uri
        self.timestamp = timestamp
        self.children: List['DreamLayer'] = []
        self._metadata: Optional[Dict] = None

    def add_child(self, child: 'DreamLayer'):
        """添加子层梦境（递归引用）"""
        self.children.append(child)

    def resolve_metadata(self) -> Dict:
        """
        递归解析本层及所有子层的元数据
        对应柯布团队的"梦境架构图"
        """
        if self._metadata:
            return self._metadata

        # 解析本层元数据（模拟递归铭文的 /content/ 引用）
        base_metadata = {
            "layer_id": self.layer_id,
            "depth": self.depth,
            "timestamp": self.timestamp,
            "time_dilation": 20 ** self.depth,  # 时间膨胀系数
            "content_hash": hashlib.sha256(
                self.metadata_uri.encode()
            ).hexdigest()
        }

        # 递归解析子层（嵌套铭文）
        if self.children:
            base_metadata["sub_layers"] = [
                child.resolve_metadata() for child in self.children
            ]

        self._metadata = base_metadata
        return self._metadata

    def calculate_kick_chain(self) -> List[str]:
        """
        计算Kick唤醒链
        从最深层开始，逐层返回现实
        """
        kick_chain = []
        current = self
        while current:
            kick_chain.append(current.layer_id)
            # 通过父层ID递归查找（模拟跨链铭文引用）
            if current.parent_layer_id:
                current = DreamLayer.registry.get(current.parent_layer_id)
            else:
                current = None
        return kick_chain  # 从最深到最浅

    # 全局注册表，模拟Ordinals的铭文索引
    registry: Dict[str, 'DreamLayer'] = {}

class RecursiveInscriptionEngine:
    """
    递归铭文引擎，管理多层嵌套的铭文数据
    """
    def __init__(self):
        self.layers: Dict[str, DreamLayer] = {}
        self.root_layer: Optional[DreamLayer] = None

    def inscribe_layer(self, layer: DreamLayer):
        """铭刻（注册）一个新的梦境层"""
        DreamLayer.registry[layer.layer_id] = layer
        self.layers[layer.layer_id] = layer
        
        if layer.parent_layer_id is None:
            self.root_layer = layer
        else:
            parent = self.layers.get(layer.parent_layer_id)
            if parent:
                parent.add_child(layer)

    def validate_dream_stack(self) -> bool:
        """
        验证整个梦境堆栈的完整性
        检查每一层的哈希是否与父层引用一致
        """
        if not self.root_layer:
            return False

        def _validate(layer: DreamLayer, expected_hash: Optional[str] = None) -> bool:
            # 计算本层数据的哈希
            current_hash = hashlib.sha256(
                json.dumps(layer.resolve_metadata(), sort_keys=True).encode()
            ).hexdigest()
            
            # 如果父层指定了期望哈希，验证一致性
            if expected_hash and current_hash != expected_hash:
                return False

            # 递归验证子层
            for child in layer.children:
                if not _validate(child, current_hash):
                    return False
            return True

        return _validate(self.root_layer)

    def simulate_kick(self, layer_id: str) -> List[str]:
        """
        模拟Kick唤醒：从指定层开始，逐层唤醒
        返回唤醒路径
        """
        layer = self.layers.get(layer_id)
        if not layer:
            return []
        return layer.calculate_kick_chain()


# 实战：构建一个三层梦境NFT架构
if __name__ == "__main__":
    engine = RecursiveInscriptionEngine()

    # 第一层：城市追逐（ratio 1:20）
    layer_1 = DreamLayer(
        layer_id="inscription_001",
        depth=0,
        parent_layer_id=None,
        metadata_uri="/content/inscription_000",  # 现实层
        timestamp=1700000000
    )

    # 第二层：酒店走廊（ratio 1:20ˆ2 = 1:400）
    layer_2 = DreamLayer(
        layer_id="inscription_002",
        depth=1,
        parent_layer_id="inscription_001",
        metadata_uri="/content/inscription_001/metadata",
        timestamp=1700000100
    )

    # 第三层：雪地堡垒（ratio 1:20ˆ3 = 1:8000）
    layer_3 = DreamLayer(
        layer_id="inscription_003",
        depth=2,
        parent_layer_id="inscription_002",
        metadata_uri="/content/inscription_002/sub_layers",
        timestamp=1700000200
    )

    # 铭刻所有层
    engine.inscribe_layer(layer_1)
    engine.inscribe_layer(layer_2)
    engine.inscribe_layer(layer_3)

    # 验证梦境堆栈
    is_valid = engine.validate_dream_stack()
    print(f"梦境堆栈完整性验证: {'通过' if is_valid else '失败'}")

    # 模拟Kick唤醒（从第三层开始）
    kick_path = engine.simulate_kick("inscription_003")
    print(f"Kick唤醒路径: {' -> '.join(kick_path)}")

    # 输出元数据架构
    metadata = layer_1.resolve_metadata()
    print(f"时间膨胀系数: 1:{20 ** 0} - 1:{20 ** 2} - 1:{20 ** 3}")
    print(f"元数据层级: {len(metadata.get('sub_layers', []))} 层嵌套")

/**
 * 递归铭文可视化引擎（Recursive Inscription Visualizer）
 * 使用Three.js渲染多层梦境NFT的嵌套结构
 * 对应《盗梦空间》中诺兰的分屏叙事手法
 */

class DreamVisualizer {
    constructor(containerId) {
        this.container = document.getElementById(containerId);
        this.scene = new THREE.Scene();
        this.camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
        this.renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
        this.renderer.setSize(window.innerWidth, window.innerHeight);
        this.container.appendChild(this.renderer.domElement);

        // 梦境层级颜色映射
        this.layerColors = {
            0: 0x44aa88, // 现实层 - 青绿色
            1: 0x88aadd, // 第一层 - 蓝色
            2: 0xdd88aa, // 第二层 - 紫色
            3: 0xaa88dd, // 第三层 - 靛色
            4: 0xff6644  // Limbo - 红色
        };

        this.inscriptions = [];
        this.camera.position.z = 15;
    }

    /**
     * 递归渲染铭文层
     * 每一层都是一个旋转的环面，嵌套在父层内部
     * 对应《盗梦空间》的"梦境拓扑"结构
     */
    renderInscriptionLayer(inscriptionData, depth = 0, parentPosition = { x: 0, y: 0, z: 0 }) {
        if (depth > 4) return; // 最多4层，防止Limbo

        const color = this.layerColors[depth] || 0xffffff;
        const scale = 1 - depth * 0.2; // 越深越小
        const geometry = new THREE.TorusGeometry(scale * 2, scale * 0.1, 16, 32);
        const material = new THREE.MeshPhongMaterial({
            color: color,
            emissive: color,
            emissiveIntensity: 0.3,
            transparent: true,
            opacity: 1 - depth * 0.15
        });

        const torus = new THREE.Mesh(geometry, material);
        torus.position.set(
            parentPosition.x + (depth * 0.5),
            parentPosition.y + (depth * 0.3),
            parentPosition.z - (depth * 0.4)
        );
        torus.userData = {
            layerId: inscriptionData.layer_id,
            depth: depth,
            metadata: inscriptionData
        };

        this.scene.add(torus);
        this.inscriptions.push(torus);

        // 递归渲染子层（嵌套铭文）
        if (inscriptionData.sub_layers) {
            inscriptionData.sub_layers.forEach((subLayer, index) => {
                const offset = {
                    x: parentPosition.x + (index - 1) * 1.5,
                    y: parentPosition.y - 0.5,
                    z: parentPosition.z - 0.3
                };
                this.renderInscriptionLayer(subLayer, depth + 1, offset);
            });
        }
    }

    /**
     * 模拟Kick唤醒动画
     * 触发时，目标层及所有子层会逐渐消失
     * 对应电影中"音乐响起，逐层唤醒"的场景
     */
    triggerKickAnimation(layerId) {
        const targetIndex = this.inscriptions.findIndex(
            t => t.userData?.layerId === layerId
        );
        if (targetIndex === -1) return;

        const animateKick = () => {
            // 从目标层开始，逐层淡出
            for (let i = targetIndex; i < this.inscriptions.length; i++) {
                const layer = this.inscriptions[i];
                if (layer.userData.depth >= this.inscriptions[targetIndex].userData.depth) {
                    layer.material.opacity -= 0.02;
                    layer.scale.x *= 0.99;
                    layer.scale.y *= 0.99;
                    layer.scale.z *= 0.99;

                    if (layer.material.opacity > 0) {
                        requestAnimationFrame(animateKick);
                    } else {
                        this.scene.remove(layer);
                    }
                }
            }
        };
        animateKick();
    }

    /**
     * 动画循环：所有铭文层持续旋转
     * 模拟梦境中"时间膨胀"的视觉感受
     */
    animate() {
        requestAnimationFrame(() => this.animate());

        const time = Date.now() * 0.001;
        this.inscriptions.forEach((torus, index) => {
            // 不同层旋转速度不同，模拟时间膨胀
            const speed = 1 / (torus.userData.depth + 1);
            torus.rotation.x += 0.01 * speed;
            torus.rotation.y += 0.02 * speed;
            // 轻微浮动动画
            torus.position.y += Math.sin(time + index) * 0.001;
        });

        this.renderer.render(this.scene, this.camera);
    }

    /**
     * 加载递归铭文数据并渲染
     * @param {Object} recursiveInscriptionData 
     */
    load(recursiveInscriptionData) {
        this.renderInscriptionLayer(recursiveInscriptionData, 0, { x: 0, y: 0, z: 0 });
        this.animate();
    }
}

// 使用示例：加载一个三层递归铭文
const visualizer = new DreamVisualizer('dream-container');

const inceptionData = {
    layer_id: "inscription_001",
    depth: 0,
    metadata_uri: "/content/genesis",
    sub_layers: [
        {
            layer_id: "inscription_002",
            depth: 1,
            metadata_uri: "/content/inscription_001/dream_1",
            sub_layers: [
                {
                    layer_id: "inscription_003",
                    depth: 2,
                    metadata_uri: "/content/inscription_002/dream_2",
                    sub_layers: [
                        {
                            layer_id: "inscription_004",
                            depth: 3,
                            metadata_uri: "/content/inscription_003/limbo"
                        }
                    ]
                }
            ]
        }
    ]
};

visualizer.load(inceptionData);

// 5秒后模拟Kick唤醒（从第三层开始）
setTimeout(() => {
    visualizer.triggerKickAnimation("inscription_003");
    console.log("Kick触发：第三层梦境开始唤醒");
}, 5000);