gummibattle.js

const blessed = require('blessed');

const STATUS = {
  pending: "PENDING"
};

class Character {
  tick() {
    if (Math.random*2 > 1) {
      this.fight();
    } else {
      this.move();
    }
  }
}

class Gummi extends Character {
  constructor(x, y) {
    this.type = 'gummi';
    this.x = x;
    this.y = y;
  }

  fight() {

  }
}
class Ogre extends Character {
  constructor(x, y) {
    this.type = 'ogre';
    this.x = x;
    this.y = y;
  }
}

class Battle {
  constructor() {
    this.status = STATUS.pending;
  }

  draw() {
    var screen = blessed.screen({
      smartCSR: true
    });
    screen.title = 'Gummi Bear vs Ogres';

    var map = blessed.box({
      top: 'center',
      left: 'center',
      width: '99%',
      height: '99%',
      content: 'The battle begins...',
      border: {
        type: 'line'
      },
      style: {
        fg: 'white',
        bg: 'blue',
        border: {
          fg: 'white'
        }
      }
    });
    screen.append(map);
    screen.render();
  }

  createMap(rows, cols) {
    let map = [];
    for (var i = 0; i < rows; i++) {
      map.push(new Array(cols));
    }
    this.map = map;
    return map;
  }

  fillMap() {
    this.map[0] = this.map[0].map(col => new Ogre());

    let lastrow = this.map.length - 1;
    this.map[lastrow] = this.map[lastrow].map(col => new Gummi());
    
    return this.map;
  }

  earthQuake() {
    // shake things up, move characters randomly around
  }

  tick() {
    if (Math.random()*15 < 1) {
      this.earthQuake();
    }
    
    // Move characters around
    // Since we don't have concurrency, switch between which army moves first
    this.map.forEach();
  }
}

module.exports = Battle;

package.json

{
  "name": "gummibattle",
  "version": "0.0.1",
  "description": "",
  "main": "src/index.js",
  "scripts": {
    "test": "tape {src,test}/*.js | tap-dot || true",
    "watch": "nodemon --watch src/ --watch test/ --exec 'npm run test'"
  },
  "author": "Pål Ruud",
  "license": "MIT",
  "devDependencies": {
    "nodemon": "^1.9.2",
    "tap-dot": "^1.0.5",
    "tape": "^4.5.1"
  },
  "dependencies": {
    "blessed": "^0.1.81"
  }
}

test.js

var test = require('tape');

test('battle', (t) => {
  var Battle = require('../src/');

  var battle = new Battle();

  t.equal(battle.status, 'PENDING', 'Battle starts in pending status');

  var battleGround = battle.createMap(2,2);
  t.equals(battleGround.length, 2, 'Can init map');
  t.equals(battleGround[0].length, 2, 'Can init map');

  battle.fillMap();
  t.equals(battle.map[0][0].type, 'ogre', 'fill first row with ogre');

  t.end();
})