wally-dice/web/stores/game/new.ts

/* Import modules. */
import {
    ripemd160,
    sha256,
} from '@nexajs/crypto'

import { binToHex } from '@nexajs/utils'

/* Initialize stores. */
import { useProfileStore } from '@/stores/profile'

/**
 * Request a New Game
 *
 * Calls game engine, with player parameters, to receive a new game id.
 */
export default async function () {
    /* Set Nexa Games endpoint. */
    const ENDPOINT = 'https://nexa.games'

    const Profile = useProfileStore()

    /* Set RPC method. */
    const method = 'POST'

    /* Validate requested payout. */
    if (this.payout === null) {
        throw new Error('Request a payout value to continue.')
    }

    /* Validate (player) position. */
    if (this.position === null) {
        throw new Error('Select a player position to continue.')
    }

    /* Validate player seed. */
    if (this.seed === null) {
        throw new Error('Set a player-defined seed to continue.')
    }

    /* Set payout for house participants (as a percentage %). */
    // NOTE: All participant shares must total 100.
    // NOTE: At least 1 participant is required.
    const house = [{
        // NEXA.games: 0.5% is automatically subtracted from the house edge
        //             value shown above to cover game engine & blockchain fees.
        // 'PUT_A_VALID_NEXA_ADDRESS_HERE': 40, // Gamemaker -- TEMP FOR DEV
        // 'PUT_A_VALID_NEXA_ADDRESS_HERE': 40, // Bankers -- TEMP FOR DEV
        // 'PUT_A_VALID_NEXA_ADDRESS_HERE': 20, // Promoter -- TEMP FOR DEV
    }]

    /* Create RPC body. */
    const body = {
        gameid: this.gameid,
        playerid: Profile.playerid,
        payout: this.payout,
        seed: this.seed,
        position: this.position,
        rtp: this.rtp,
        house,
    }

    /* Request game play. */
    const response = await $fetch(ENDPOINT + '/v1/play', {
        method,
        body,
    }).catch(err => console.error(err))
    console.info('Gameplay details:', response)

    /* Set play id. */
    this.setPlayid(response?.playid)

    /* Set (play) address. */
    this.setAddress(response?.address)

    /* Build authorization value. */
    const authValue = `${this.playid}:${this.rtp}:${this.payout}:${this.position}:${this.seed}`
    // console.log('AUTH VALUE', authValue)

    /* Double-hash authorization value. */
    this.setAuthHash(binToHex(ripemd160(sha256(authValue), 'binary')))
    // console.log('AUTH HASH', this.authHash)
}