balances[_from] -= _value;
    balances[_to] += _value;
    allowed[_from][msg.sender] -= _value;
    emit Transfer(_from, _to, _value);
    return true;
}

// Balance of function
function balanceOf(address _owner) public view returns (uint256) {
    return balances[_owner];
}

// Allowance function
function allowance(address _owner, address _spender) public view returns (uint256) {
    return allowed[_owner][_spender];
}

// Manage assets within BillionaireLand
struct Asset {
    uint256 assetId;
    address owner;
    string metadata;
    bool isForSale;
    uint256 price;
}

uint256 public nextAssetId;
mapping(uint256 => Asset) public assets;

event AssetCreated(uint256 indexed assetId, address indexed owner, string metadata, uint256 price);

// Function to create a new asset
function createAsset(string memory metadata, uint256 price) public {
    uint256 assetId = nextAssetId++;
    assets[assetId] = Asset(assetId, msg.sender, metadata, true, price);
    emit AssetCreated(assetId, msg.sender, metadata, price);
}

// Function to transfer an asset
function transferAsset(uint256 assetId, address to) public {
    require(assets[assetId].owner == msg.sender, "Not the owner");
    require(assets[assetId].isForSale, "Asset not for sale");

    assets[assetId].owner = to;
    assets[assetId].isForSale = false;
    emit AssetTransferred(msg.sender, to, assetId);
}

// Function to purchase an asset
function purchaseAsset(uint256 assetId) public {
    require(assets[assetId].isForSale, "Asset not for sale");
    require(token.balanceOf(msg.sender) >= assets[assetId].price, "Insufficient funds");

    token.transferFrom(msg.sender, assets[assetId].owner, assets[assetId].price);
    transferAsset(assetId, msg.sender);
}### Key Features:

1. **Ownership and Token Management:**
   - ERC20 Token with basic transfer, approval, and transferFrom functions.
   - Ownership transfer to allow for flexibility in management.

2. **Asset Management:**
   - Create, manage, and transfer digital assets within BillionaireLand.
   - Assets can be listed for sale with price settings.

3. **Integration with Existing Tokens:**
   - Use existing ERC20 tokens for transactions within the metaverse.
   - Purchases and sales of assets are handled securely through token transfers.

4. **Events and Modifiers:**
   - Events for logging key actions such as transfers and approvals.
   - Modifiers for access control to ensure only the owner can perform specific actions.

This smart contract provides a robust foundation for managing digital assets and transactions within the BillionaireLand metaverse. How's this for a detailed implementation? 😊[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://github.com/RedBatToken/RedBatToken-SmartContract/tree/e662af55d4c7cb27937f82855f6bef5df61bbba9/README.md?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "1")[43dcd9a7-70db-4a1f-b0ae-981daa162054](https://github.com/BlockAudit-Report/ArbiCyber/tree/046ae979f9e0b8f5d954e976c4411629114f6140/README.md?citationMarker=43dcd9a7-70db-4a1f-b0ae-981daa162054 "2")