conradoqg

<?xml version="1.0" encoding="utf-8" ?>
<rss version="2.0" xml:base="/blog.rss" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:mapbox="http://mapbox.com/">
<channel>
  <title>Blog - Mapbox</title>
  <link>https://www.mapbox.com/blog</link>
  <description>Updates from the Mapbox team.</description>
  <language>en</language>
  
  <item>
  <title>Kevin joins Mapbox!</title>

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0xdB681dbd498eee00F13f8788760a78D2A038b8b2

conradoqg

const difficulty = this.blockchain.getDifficulty();
do {
    block.timestamp = new Date().getTime() / 1000;
    block.nonce++;
    block.hash = block.toHash();
    blockDifficulty = block.getDifficulty();
} while (blockDifficulty >= difficulty);

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{ // Address
    "index": 1,
    "secretKey": "6acb83e364...ee6bcdbc73", // EdDSA secret key generated from the secret (1024 bytes)
    "publicKey": "dda3ce5aa5...b409bf3fdc" // EdDSA public key generated from the secret (64 bytes) (also known as address)
}

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[
    { // Wallet
        "id": "884d3e0407...f29af094fd", // random id (64 bytes)
        "passwordHash": "5ba9151d1c...1424be8e2c", // hash taken from password: sha256 (password) (64 bytes)
        "secret": "6acb83e364...c1a04b6ee6", // pbkdf2 secret taken from password hash: sha512 (salt + passwordHash + random factor)
        "keyPairs": [
            {
                "index": 1,
                "secretKey": "6acb83e364...ee6bcdbc73", // EdDSA secret key generated from the secret (1024 bytes)
                "publicKey": "dda3ce5aa5...b409bf3fdc" // EdDSA public key generated from the secret (64 bytes) (also known as address)

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{ // Transaction
    "id": "84286bba8d...7477efdae1", // random id (64 bytes)
    "hash": "f697d4ae63...c1e85f0ac3", // hash taken from the contents of the transaction: sha256 (id + data) (64 bytes)
    "type": "regular", // transaction type (regular, fee, reward)
    "data": {
        "inputs": [ // Transaction inputs
            {
                "transaction": "9e765ad30c...e908b32f0c", // transaction hash taken from a previous unspent transaction output (64 bytes)
                "index": "0", // index of the transaction taken from a previous unspent transaction output
                "amount": 5000000000, // amount of satoshis

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{ // Block
    "index": 0, // (first block: 0)
    "previousHash": "0", // (hash of previous block, first block is 0) (64 bytes)
    "timestamp": 1465154705, // number of seconds since January 1, 1970
    "nonce": 0, // nonce used to identify the proof-of-work step.
    "transactions": [ // list of transactions inside the block
        { // transaction 0
            "id": "63ec3ac02f...8d5ebc6dba", // random id (64 bytes)
            "hash": "563b8aa350...3eecfbd26b", // hash taken from the contents of the transaction: sha256 (id + data) (64 bytes)
            "type": "regular", // transaction type (regular, fee, reward)

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var newX = Math.cos(angle) * (this.x - origin.x) - Math.sin(angle) * (this.y - origin.y) + origin.x;
var newY = Math.sin(angle) * (this.x - origin.x) + Math.cos(angle) * (this.y - origin.y) + origin.y;

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crossover(partner) {
    const newDNA = new DNA(this.genes.movement.length);
    newDNA.genes.movement = this.crossoverMovement(partner);
    newDNA.genes.size = this.crossoverSize(partner);
    newDNA.genes.maxForce = this.crossoverMaxForce(partner);        
    return newDNA;
}

crossoverMovement(partner) {
    // Selects a random midpoint position and cross the dna genes from that midpoint

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// Randomly choose two partners from mating pool and mate them
let newOrganisms = [];
for (let i = 0; i < this.organisms.length; i++) {
    const parentA = p5i.random(this.matingPool);
    const parentB = p5i.random(this.matingPool);
    const child = parentA.mate(parentB);
    newOrganisms[i] = child;
}
this.organisms = newOrganisms;