map.js

const Dungeon = require('random-dungeon-generator')
const rn = require('random-number');

const Enemy = require('./enemies');

const settings = {
  width: 28,
  height: 24,
  minRoomSize: 2,
  maxRoomSize: 6
}

const heightGen = rn.generator({min: 0, max: settings.height - 1, integer: true});
const widthGen = rn.generator({min:0, max: settings.width - 1, integer: true});
const itemGen = rn.generator({min: 8, max:  12, integer: true})

var level = 1;

module.exports = class {

  static getLevel() {
    return level;
  }

  static setLevel(lvl){
    level = lvl
  }

  static generateDungeon() {
    var dungeon = normaliseDungeon(Dungeon.NewDungeon(settings));
    return populateDungeon(dungeon)
  }

  static parseDungeon(dungeon, client){
    console.log("Parsing")
    var dungeonMessages = [];
    var dungeonMessage = "";
    var count = 0;

    const subway = client.emojis.find(emoji => emoji.name === "subway")

    dungeon.forEach(row => {
      row.forEach(cell => {
        switch (cell) {
          case 9:
            dungeonMessage += "🏃";
            break;
          case 3:
            dungeonMessage += "🍎";
            break;
          case 2:
            dungeonMessage += subway;
            break;
          case 1:
            dungeonMessage += "⬛";
            break;
          case 0:
            dungeonMessage += "🔳";
            break;
          default:
            if (cell instanceof Enemy)
              dungeonMessage += cell.emoji;
        }
      });
      if (count == 3) {
        dungeonMessages.push(dungeonMessage);
        dungeonMessage = "";
        count = 0;
      }
      else {
        count++;
        dungeonMessage += "\n";
      }
    });
    console.log("Finished Parsing")
    return dungeonMessages;
  }
}


// turn all room numbers into 0s
function normaliseDungeon(dungeon){
  console.log("Normalising")
  for (y = 0; y < dungeon.length; ++y) {
    for (x = 0; x < dungeon[y].length; ++x) {
      switch (dungeon[y][x]) {
        case 1:
          break;
        default:
          dungeon[y][x] = 0;
          break;
      }
    }
  }
  console.log("Finished Normalising")
  return dungeon
}

function populateDungeon(dungeon){
  console.log("Populating")
  var numberOfPointBoosts = itemGen()
  var numberOfEnemies = itemGen() + 1
  // Subway
  dungeon = runUntilPopulate(dungeon, 2);
  for (var i = 0; i < numberOfPointBoosts; ++i){
    dungeon = runUntilPopulate(dungeon, 3);
  }
  for (var i = 0; i < numberOfEnemies; ++i){
    dungeon = runUntilPopulate(dungeon, new Enemy(1 + (level-1)/5));
  }

  // Player
  dungeon = runUntilPopulate(dungeon, 9);


  console.log("Finished Populating");
  return dungeon;
}
function runUntilPopulate(dungeon, value){
  while (true){
    var y = heightGen();
    var x = widthGen();
    if (dungeon[y][x] === 0){
      dungeon[y][x] = value;
      return dungeon
    }
  }
}