Index

Chapter 12: Putting It Together

We're close to being done with our random Zombie generator! Let's create a public function that ties everything together.
We're going to create a public function that takes an input, the zombie's name, and uses the name to create a zombie with random DNA.

Put it to the test

1. Create a public function named createRandomZombie. It will take one parameter named _name (a string). (Note: Declare this function public just as you declared previous functions private)

2. The first line of the function should run the _generateRandomDna function on _name, and store it in a uint named randDna.

3. The second line should run the _createZombie function and pass it _name and randDna.

4. The solution should be 4 lines of code (including the closing } of the function).

pragma solidity ^0.4.25;

contract ZombieFactory {

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

    struct Zombie {
        string name;
        uint dna;
    }

    Zombie[] public zombies;

    function _createZombie(string _name, uint _dna) private {
        zombies.push(Zombie(_name, _dna));
    }

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

    function createRandomZombie(string _name) public {
        uint randDna = _generateRandomDna(_name);
        _createZombie(_name, randDna);

    }

}