snake game

const { MessageEmbed } = require("discord.js");
const { MessageActionRow, MessageButton } = require('discord-buttons');
const data = new Set();

const width = 15;
const height = 10;
const apple = { x: 0, y: 0 };
const food = { x: 0, y: 0}
const gameBoard = [];

class SnakeGame {
  constructor(options) {
    this.score = 0;
    this.inGame = false;
    this.snakeLength = 1;
    this.snake = [{ x: 0, y: 0 }];
    this.options = options;
    if (data.has(this.options.message.author.id)) return;
	  data.add(this.options.message.author.id);
    for (let y = 0; y < height; y++) {
      for (let x = 0; x < width; x++) {
        gameBoard[y * width + x] = ":black_large_square:";
      }
    }
  }

  gameBoardToString() {
    let str = '';
    for (let y = 0; y < height; y++) {
      for (let x = 0; x < width; x++) {
        if (x == apple.x && y == apple.y) {
          str += ":small_blue_diamond:";
          continue;
        }
        if (x == food.x && y == food.y) {
          str += ":small_orange_diamond:";
          continue;
        }
        let flag = true;
        for (let s = 0; s < this.snake.length; s++) {
          if (x == this.snake[s].x && y == this.snake[s].y) {
            str += ":green_circle:";
            flag = false;
          }
        }
        if (flag) {
          str += gameBoard[y * width + x];
        }
      }
      str += '\n';
    }
    return str;
  }

  isLocInSnake(pos) {
    return this.snake.find((sPos) => sPos.x == pos.x && sPos.y == pos.y);
  }

  newappleLoc() {
    let newapplePos = {
      x: 0,
      y: 0,
    };
    do {
      newapplePos = {
        x: parseInt(Math.random() * width),
        y: parseInt(Math.random() * height),
      };
    } while (this.isLocInSnake(newapplePos));
    apple.x = newapplePos.x;
    apple.y = newapplePos.y;
  }

  newfoodLoc() {
    let newfoodPos = {
      x: 0,
      y: 0,
    };
    do {
      newfoodPos = {
        x: parseInt(Math.random() * width),
        y: parseInt(Math.random() * height),
      };
    } while (this.isLocInSnake(newfoodPos));
    food.x = newfoodPos.x;
    food.y = newfoodPos.y;
  }

  step(msg){
    if (apple.x == this.snake[0].x && apple.y == this.snake[0].y) {
      this.score += 1;
      this.snakeLength++;
      this.newappleLoc();
    }
    if (food.x == this.snake[0].x && food.y == this.snake[0].y) {
      this.score += 2;
      this.snakeLength += 2;
      this.newfoodLoc();
    }
  	const updateEmbed = new MessageEmbed()
  	  .setColor("BLUE")
  	  .setTitle("Snake Game")
  	  .setFooter("® RDDigital")
  	  .addField('Score:', this.score, true)
  	  .setDescription(this.gameBoardToString())
  	  .setTimestamp(Date.now());
  	let disbtn1 = new MessageButton().setStyle('grey').setLabel('\u200b').setID('disablebtn1').setDisabled();
  	let disbtn2 = new MessageButton().setStyle('grey').setLabel('\u200b').setID('disablebtn2').setDisabled();

  	let btnUP = new MessageButton().setStyle('blurple').setEmoji('⬆️').setID('btnUP')
  	let btnDOWN = new MessageButton().setStyle('blurple').setEmoji('⬇️').setID('btnDOWN')
  	let btnRIGHT = new MessageButton().setStyle('blurple').setEmoji('➡️').setID('btnRIGHT')
  	let btnLEFT = new MessageButton().setStyle('blurple').setEmoji('⬅️').setID('btnLEFT')
  	let rowbtnA = new MessageActionRow().addComponents([disbtn1, btnUP, disbtn2])
  	let rowbtnB = new MessageActionRow().addComponents([btnLEFT, btnDOWN, btnRIGHT])
  	let btnRow = [rowbtnA, rowbtnB]

  	msg.edit({
  	  embed: updateEmbed,
  	  components: btnRow
  	})
  }

  gameOver(m){
    this.inGame = false
    const gameoverembed = new MessageEmbed()
      .setColor("RED")
      .setTitle("GameOver")
      .setFooter("® RDDigital")
      .setDescription(`Your Score: ${this.score}`)
      .setTimestamp(Date.now());
    let disbtn1 = new MessageButton().setStyle('grey').setLabel('\u200b').setID('disablebtn1').setDisabled();
    let disbtn2 = new MessageButton().setStyle('grey').setLabel('\u200b').setID('disablebtn2').setDisabled();

    let btnUP = new MessageButton().setStyle('blurple').setEmoji('⬆️').setID('btnUP').setDisabled()
    let btnDOWN = new MessageButton().setStyle('blurple').setEmoji('⬇️').setID('btnDOWN').setDisabled()
    let btnRIGHT = new MessageButton().setStyle('blurple').setEmoji('➡️').setID('btnRIGHT').setDisabled()
    let btnLEFT = new MessageButton().setStyle('blurple').setEmoji('⬅️').setID('btnLEFT').setDisabled()
    let rowbtnA = new MessageActionRow().addComponents([disbtn1, btnUP, disbtn2])
    let rowbtnB = new MessageActionRow().addComponents([btnLEFT, btnDOWN, btnRIGHT])
    let btnRow = [rowbtnA, rowbtnB]

    m.edit({
      embed: gameoverembed,
      components: btnRow
    })
  }

  newGame(){
    if (this.inGame) {
      return;
    }
  	this.inGame = true;
  	this.score = 0;
  	this.snakeLength = 1;
  	this.snake = [{ x: 5, y: 5 }];
  	this.newappleLoc();
  	this.newfoodLoc();
  	const embed = new MessageEmbed()
  		.setColor("BLUE")
  	  .setTitle("Snake Game")
  	  .setFooter("® RDDigital")
  	  .addField('Score:', this.score, true)
  		.setDescription(this.gameBoardToString())
  	  .setTimestamp(Date.now());
    let disbtn1 = new MessageButton().setStyle('grey').setLabel('\u200b').setID('disablebtn1').setDisabled();
    let disbtn2 = new MessageButton().setStyle('grey').setLabel('\u200b').setID('disablebtn2').setDisabled();

    let btnUP = new MessageButton().setStyle('blurple').setEmoji('⬆️').setID('btnUP')
    let btnDOWN = new MessageButton().setStyle('blurple').setEmoji('⬇️').setID('btnDOWN')
    let btnRIGHT = new MessageButton().setStyle('blurple').setEmoji('➡️').setID('btnRIGHT')
    let btnLEFT = new MessageButton().setStyle('blurple').setEmoji('⬅️').setID('btnLEFT')
    let rowbtnA = new MessageActionRow().addComponents([disbtn1, btnUP, disbtn2])
    let rowbtnB = new MessageActionRow().addComponents([btnLEFT, btnDOWN, btnRIGHT])
    let btnRow = [rowbtnA, rowbtnB]

    this.options.message.channel.send({ embed }).then(async (m) => {
      m.edit({
        embed: embed,
        components: btnRow
      })
      const filter = (buttons) => buttons.clicker.id === this.options.message.author.id
      const collector = m.createButtonCollector(filter, {});

      collector.on("collect", (button) => {
        button.reply.defer();
        const snakeHead = this.snake[0];
        const nextPos = {
          x: snakeHead.x,
          y: snakeHead.y,
        };
        if (button.id === "btnRIGHT") {
          let nextX = snakeHead.x + 1;
          if (nextX >= width) {
            nextX = 0;
          }
          nextPos.x = nextX;
        } else if (button.id === "btnUP") {
          let nextY = snakeHead.y - 1;
          if (nextY < 0) {
            nextY = height - 1;
          }
          nextPos.y = nextY;
        } else if (button.id === "btnDOWN") {
          let nextY = snakeHead.y + 1;
          if (nextY >= height) {
            nextY = 0;
          }
          nextPos.y = nextY;
        } else if (button.id === "btnLEFT") {
          let nextX = snakeHead.x - 1;
          if (nextX < 0) {
            nextX = width - 1;
          }
          nextPos.x = nextX;
        }


        if (this.isLocInSnake(nextPos)) {
          this.gameOver(m);
          collector.stop();
          data.delete(this.options.message.author.id);
        } else {
          this.snake.unshift(nextPos);
          if (this.snake.length > this.snakeLength) {
            this.snake.pop();
          }
          this.step(m);
        }
      })
    })
  }
}

module.exports = SnakeGame;