Jasper Engine 2D

Overview

Jasper 2D, an object-behavior based game engine that allows game devs to share their custom defined behaviors among other game developers to provide a new social aspect towards gaem development.

How it works

Jasper 2D consists of two main components:

• Objects

  • Objects in Jasper have a logical existence.
  • They do not have any behavior associated with them initially.
  • They can be tagged with a name for reference.
  • In short,

  An Object is a logical entity and can be composed of any number of Behaviors

• Behaviors

  • Behaviors give character to an object.
  • They define an object, how it looks, what it does, how it does it, how it handles events, etc.
  • In short,

  A Mix of Behaviors Define an Object in the game.

Example

var hero = new Jasper.Object("hero");   
hero.addBehavior("moveAround");

Other Components

• Core

  • The Jasper.Core object is the main engine object that takes care of the game loop, all the scenes, layers and objects within it.
  • init() must be called on the core to start off the engine.

  var gameCore = new Jasper.Core({
      canvasHeight: 1200,
      canvasWidth: 1000,
      container: "container"
  }).init();
  

• Scene

  • The Jasper.Scene forms the next level of heirarchy.
  • This splits the game into independent scenes each having its own layers.
  • Only one scene can be run at a time.

  var gameScene = new Jasper.Scene({
      name: "main",
      worldW: 1200,
      worldH: 1000,
  });
  

  gameCore.addScene(gameScene).startScene(gameScene);

• Layer

  • The Jasper.Layer acts a container for all objects that are supposed to be in the same z-level.
  • This is because the order of rendering of layers are in the same order that they have been added to Scene.

  var arenaLayer = new Jasper.Layer({
      name:"arena"
      });
  gameScene.addLayer(arenaLayer);
  

Phew... Now let's make something

Let's get started working with Jasper 2D!!! On to the tutorial !!!

Author : Jude Naveen Raj

Organisation : Delta NITT