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i-asimkhan/ZombieFactory.sol

Created August 1, 2022 19:25
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  1. i-asimkhan created this gist Aug 1, 2022.
    41 changes: 41 additions & 0 deletions ZombieFactory.sol
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    pragma solidity >=0.5.0 <0.6.0;

    contract ZombieFactory {

    event NewZombie(uint zombieId, string name, uint dna);

    uint dnaDigits = 16;
    uint dnaModulus = 10 ** dnaDigits;

    struct Zombie {
    string name;
    uint dna;
    }

    Zombie[] public zombies;

    mapping (uint => address) public zombieToOwner;
    mapping (address => uint) ownerZombieCount;

    function _createZombie(string memory _name, uint _dna) private {
    uint id = zombies.push(Zombie(_name, _dna)) - 1;
    zombieToOwner[id] = msg.sender;
    ownerZombieCount[msg.sender]++;
    emit NewZombie(id, _name, _dna);
    }

    function _generateRandomDna(string memory _str) private view returns (uint) {
    uint rand = uint(keccak256(abi.encodePacked(_str)));
    return rand % dnaModulus;
    }

    function createRandomZombie(string memory _name) public {
    require(ownerZombieCount[msg.sender] == 0);
    uint randDna = _generateRandomDna(_name);
    _createZombie(_name, randDna);
    }

    }

    contract ZombieFeeding is ZombieFactory {}