web3.js example
// Here's how we would access our contract:
var abi = /* abi generated by the compiler */
var ZombieFactoryContract = web3.eth.contract(abi)
var contractAddress = /* our contract address on Ethereum after deploying */
var ZombieFactory = ZombieFactoryContract.at(contractAddress)
// `ZombieFactory` has access to our contract's public functions and events
// some sort of event listener to take the text input:
$("#ourButton").click(function(e) {
var name = $("#nameInput").val()
// Call our contract's `createRandomZombie` function:
ZombieFactory.createRandomZombie(name)
})
// Listen for the `NewZombie` event, and update the UI
var event = ZombieFactory.NewZombie(function(error, result) {
if (error) return
generateZombie(result.zombieId, result.name, result.dna)
})
// take the Zombie dna, and update our image
function generateZombie(id, name, dna) {
let dnaStr = String(dna)
// pad DNA with leading zeroes if it's less than 16 characters
while (dnaStr.length < 16)
dnaStr = "0" + dnaStr
let zombieDetails = {
// first 2 digits make up the head. We have 7 possible heads, so % 7
// to get a number 0 - 6, then add 1 to make it 1 - 7. Then we have 7
// image files named "head1.png" through "head7.png" we load based on
// this number:
headChoice: dnaStr.substring(0, 2) % 7 + 1,
// 2nd 2 digits make up the eyes, 11 variations:
eyeChoice: dnaStr.substring(2, 4) % 11 + 1,
// 6 variations of shirts:
shirtChoice: dnaStr.substring(4, 6) % 6 + 1,
// last 6 digits control color. Updated using CSS filter: hue-rotate
// which has 360 degrees:
skinColorChoice: parseInt(dnaStr.substring(6, 8) / 100 * 360),
eyeColorChoice: parseInt(dnaStr.substring(8, 10) / 100 * 360),
clothesColorChoice: parseInt(dnaStr.substring(10, 12) / 100 * 360),
zombieName: name,
zombieDescription: "A Level 1 CryptoZombie",
}
return zombieDetails
}