Codecademy Challenge Project: Find Your Hat

main.js

/* 

I included a lot of extraneous functions in an effort to modularize things and make it easier to handle
future improvements. For example, every win/loss condition has its own function, which makes it easier to 
change & edit them.

*/

const prompt = require("prompt-sync")({ sigint: true });

const hat = "^";
const hole = "O";
const fieldCharacter = "░";
const pathCharacter = "*";
const fieldSymbols = [fieldCharacter, hole];

class Field {
  constructor(field) {
    this.field = field;
    this.fieldHeight = field.length - 1;
    this.fieldWidth = field[0].length - 1;
    this.playerX = 0;
    this.playerY = 0;
    this.hatLocation = [2, 1]; // generate a random spot to put hat
  }

  print() { // print the current field
    for (let row of this.field) {
      console.log(row.join(' '));
    }
  }

  start() {
    this.prepField(); 
    this.move();
  }

  prepField() { // adds the character and the hat to the field
    this.field[0][0] = pathCharacter;
    this.field[this.hatLocation[0]][this.hatLocation[1]] = hat;
  }

  move() {
    this.print();
    let direction = prompt('Where to next? ').toLowerCase()
    switch (direction) {
      case 'w':
        this.playerY -= 1;
        break;
      case 's':
        this.playerY += 1;
        break;
      case 'a':
        this.playerX -= 1;
        break;
      case 'd':
        this.playerX += 1;
        break;
    }
    this.testWinLoss();
  }

  updateField() { // needs to update all player locations to the path symbol
    this.field[this.playerY][this.playerX] = pathCharacter;
  }

  testWinLoss() { // test for win/loss conditions and react accordingly
    if (this.playerY === this.hatLocation[0] && this.playerX === this.hatLocation[1]) { // checks if player is on the hat
      this.winGame();
    } else if (this.playerY > this.fieldHeight || this.playerY < 0) { // checks vertical position
      this.wentOutsideField();
    } else if (this.playerX > this.fieldWidth || this.playerX < 0) { // checks horizontal position
      this.wentOutsideField();
    } else if (this.field[this.playerY][this.playerX] === hole) { // checks if player is on (inside of) a hole
      this.fellInHole();
    } else {
      this.updateField();
      this.move();
    }
  }

  winGame() { // helper to win the game
    console.log('You found your hat!');
    process.exit();
  }

  fellInHole() { // helper when you fall in the hole
    console.log('You fell in a hole and died!');
    process.exit();
  }

  wentOutsideField() { // helper when you go out of a field
    console.log('You moved outside the field, got lost, and died!');
    process.exit();
  }

  static generateField(height, width) {
    let field = [];

    // generate rows randomly, push to field
    for (let r = 0; r < height; r++) {
      let currentRow = [];
      for (let i = 0; i < width; i++) {
        currentRow.push(
            fieldSymbols[Math.floor(Math.random() * fieldSymbols.length)]
          );
      }
      field.push(currentRow);
    }

    return field; // return the field as an array
  }
}

const MyField = new Field(Field.generateField(5, 5));
MyField.start();