Bacon.js component playground

test2.js

var Bacon = require("./vendor/Bacon.min.js");

var GameObject = function() {
  this.bus           = new Bacon.Bus();
  this.eventStreams  = [];
  this.eventHandlers = [];
  this.data = {};
}

GameObject.prototype.registerEventType = function(eventType) {
  this.eventStreams[eventType] = this.bus.filter(function(e) { 
    return e.eventType === eventType; 
  }).map(function(e) {
    return e.data;
  });
  return this.eventStreams[eventType];
}

GameObject.prototype.getEventStream = function(eventType) {
  return this.eventStreams[eventType];
}

GameObject.prototype.registerHandler = function(eventType, handler) {
  return this.getEventStream(eventType).map(handler, this.data);
}




var shieldProcessor = function(objectData, damageEventData) {
  damageEventData.electromagnetic = Math.floor(objectData.shieldStrength * damageEventData.electromagnetic / 100);
  return damageEventData;
}

var armorProcessor = function(objectData, damageEventData) {
  damageEventData.kinetic = Math.floor(objectData.armorStrength * damageEventData.kinetic / 100);
  return damageEventData;
}

var damageProcessor = function(objectData, damageEventData) {
  objectData.hull -= damageEventData.kinetic + damageEventData.electromagnetic;
  return objectData;
};


var applyDamageToObject = function(gobj, kinetic, electromagnetic) {
  var e = {
    eventType: "damage",
    data: {
      kinetic: kinetic,
      electromagnetic: electromagnetic 
    }
  };

  // Send the damage event onto the objects event bus
  gobj.bus.push(e);
};


var myObject = new GameObject();
myObject.data = {
  hull: 100,
  armorStrength: 25,
  shieldStrength: 25
}

myObject.registerEventType("damage")
            .map(shieldProcessor, myObject.data)
            .map(armorProcessor,  myObject.data)
            .map(damageProcessor, myObject.data)
            .onValue(function(v) {
              // Need to do this to make this stream not lazy
            });

console.log("Game Object State: ", myObject.data);
console.log("Apply Damage!");
applyDamageToObject(myObject, 50, 50);
console.log("Game Object State: ", myObject.data);