// SPDX-License-Identifier: GPL-3.0

pragma solidity ^0.8.30;

contract DeployWithCreate2 {
    address public owner;

    constructor(address _owner){
        owner = _owner;
    }
}

contract Create2Factory {
    event Deploy(address addr);

    function deploy(uint _salt) external {
        DeployWithCreate2 _contract = new DeployWithCreate2{
            salt: bytes32(_salt)
        }(msg.sender);
        emit Deploy(address(_contract));
    }

    function getAddress(bytes memory bytecode, uint _salt) public view returns(address){
        bytes32 hash = keccak256(
            abi.encodePacked(
                // 新地址 = hash("0xFF",创建者地址, salt, initcode)
                // address(this): 调用 CREATE2 的当前合约（创建合约）地址。
                // keccak256(bytecode): 新合约的初始字节码（合约的Creation Code和构造函数的参数）。
                bytes1(0xff), address(this), _salt, keccak256(bytecode)
            )
        );
        return address(uint160(uint(hash)));
    }

    // 获取字节码的方法
    // 将当前合约中的指定方法与EOA账号打包生成字节码
    function getBytecode(address _owner) public  pure returns(bytes memory){
        // 生成的字节码
        bytes memory bytecode = type(DeployWithCreate2).creationCode;
        return abi.encodePacked(bytecode, abi.encode(_owner));
    }
}

通过salt去控制合约方法的字节码，可以提前预知