Snippet: Discord Emoji Race Prefix Command

Discord Emoji Race Prefix Command

Jacob Lee — jacoblee

Prefix command that starts an emoji race! Emojis will randomly move in the embed message until they reach the finish line. For best results, set your service timeout to 30000ms.

const lib = require('lib')({token: process.env.STDLIB_SECRET_TOKEN});

const totalRoadLength = context.params.event.content.split(' ')[1] || 10;
const EMOJIS = [
  `🚗`,
  `🚃`,
  `🏎️`,
  `🚙`,
  `🚓`,
];

let currentPositions = EMOJIS.reduce((positions, emoji) => {
  positions[emoji] = 0;
  return positions;
}, {});

let embedGenerator = (iteration) => {
  let roadCharacter = '⬛';
  let description = EMOJIS.map((emoji) => {
    if (iteration > 0) {
      currentPositions[emoji] += Math.round(Math.random());
    }
    let hasFinished = currentPositions[emoji] >= totalRoadLength;
    let road = [
      roadCharacter.repeat(Math.min(currentPositions[emoji], totalRoadLength)),
      emoji,
      !hasFinished ? roadCharacter.repeat(totalRoadLength - 1 - currentPositions[emoji]) + '🏁' : '',
      roadCharacter
    ].join('');
    return road;
  }).concat([
    'Start your engines!'
  ]).join('\n');
  return {
    title: `Race`,
    description: description,
    color: 0xadacac,
  };
};

let sleep = async (ms) => {
  return new Promise((resolve) => {
    setTimeout(resolve, ms);
  });
};

if (context.params.event.content.startsWith('!race')) {
  let racemessage = await lib.discord.channels['@0.0.6'].messages.create({
    channel_id: context.params.event.channel_id,
    content: `<@!${context.params.event.author.id}>`,
    embed: embedGenerator(0),
  });
  
  for (let i = 0; i < 25; i++) {
    await lib.discord.channels['@0.0.6'].messages.update({
      channel_id: context.params.event.channel_id,
      message_id: racemessage.id,
      content: `<@!${context.params.event.author.id}>`,
      embed: embedGenerator(i + 1),
    });
    let currentLeaders = Object.keys(currentPositions).reduce((currentLeaders, emoji) => {
      if (!currentLeaders.length || currentPositions[emoji] > currentPositions[currentLeaders]) {
        return [emoji];
      } else if (currentPositions[emoji] === currentPositions[currentLeaders[0]]) {
        currentLeaders.push(emoji);
        return currentLeaders
      } else {
        return currentLeaders;
      }
    }, []);
    if (currentPositions[currentLeaders[0]] >= totalRoadLength) {
      return lib.discord.channels['@0.1.2'].messages.create({
        channel_id: `${context.params.event.channel_id}`,
        content: `The race is over! Here's who won: ${currentLeaders.join(', ')}!`
      });
    }
    await sleep(1000); // Avoid rate limit
  }
}