+++ /dev/null
-require("neon");
-
-/*
-Serpentity is a simple entity framework inspired by Ash.
-
-Usage:
-
- require('serpentity');
-
-## Instantiating an engine
-
- var engine = Serpentity();
-
-Add entities or systems:
-
- engine.addEntity(entityFactory());
- engine.addSystem(new GameSystem());
-
-Update all systems:
-
- engine.update(dt);
-
-Remove entities or systems:
-
- engine.removeEntity(entityReference);
- engine.removeSystem(systemReference);
-
-## Creating Entities
-
-Entities are the basic object of Serpentity, and they do nothing.
-
- var entity = new Serpentity.Entity();
-
-All the behavior is added through components
-
-## Creating Components
-
-Components define data that we can add to an entity. This data will
-eventually be consumed by "Systems"
-
- Class("PositionComponent").inherits(Serpentity.Component)({
- prototype : {
- x : 0,
- y : 0
- }
- });
-
-You can add components to entities by using the add method:
-
- entity.add(new PositionComponent());
-
-
-Systems can refer to entities by requesting nodes.
-
-## Working with Nodes
-
-Nodes are sets of components that you define, so your system can require
-entities that always follow the API defined in the node.
-
- Class("MovementNode").inherits(Serpentity.Node)({
- types : {
- position : PositionComponent,
- motion : MotionComponent
- }
- });
-
-You can then request an array of all the nodes representing entities
-that comply with that API
-
- engine.getNodes(MovementNode);
-
-## Creating Systems
-
-Systems are called on every update, and they use components through nodes.
-
- Class("TestSystem").inherits(Serpentity.System)({
- prototype : {
- added : function added(engine){
- this.nodeList = engine.getNodes(MovementNode);
- },
- removed : function removed(engine){
- this.nodeList = undefined;
- }
- update : function update(dt){
- this.nodeList.forEach(function (node) {
- console.log("Current position is: " + node.position.x + "," + node.position.y);
- });
- }
- }
- });
-
-## That's it
-
-Just run `engine.update(dt)` in your game loop :D
-
-*/
-Class("Serpentity")({
- prototype : {
- systems : null,
- nodeCollections : null,
- entities : null,
-
- init : function init(config) {
- var property;
-
- config = config || {};
-
- this.systems = [];
- this.entities = [];
- this.nodeCollections = {};
-
- for (property in config) {
- if (config.hasOwnProperty(property)) {
- this[property] = config[property];
- }
- }
- },
-
- /*
- * Adds a system to the engine, so its update method will be called
- * with the others. Triggers added hook.
- *
- * returns true if added succesfully, false if already added
- */
- addSystem : function addSystem(system) {
- if (this.systems.indexOf(system) >= 0) {
- return false;
- }
- this.systems.push(system);
- system.added(this);
- return true;
- },
-
- /*
- * Removes a system from the engine, so its update method will no
- * longer will be called. Triggers the removed hook.
- *
- * returns true if removed succesfully, false if already added
- */
- removeSystem : function removeSystem(system) {
- var position;
-
- position = this.systems.indexOf(system);
- if (position >= 0) {
- this.systems[position].removed(this);
- this.systems.splice(position, 1);
- return true;
- }
-
- return false;
- },
-
- /*
- * Adds an entity to the engine, adds to existing node collections
- *
- * returns true if added, false if already there
- */
- addEntity : function addEntity(entity) {
- var property;
-
- if (this.entities.indexOf(entity) >= 0) {
- return false;
- }
- this.entities.push(entity);
-
- for (property in this.nodeCollections) {
- if (this.nodeCollections.hasOwnProperty(property)) {
- this.nodeCollections[property].add(entity);
- }
- }
- return true;
- },
-
- /*
- * Removes entity from system, removing from all node collections
- *
- * returns true if removed, false if not present
- */
- removeEntity : function removeEntity(entity) {
- var position;
-
- position = this.entities.indexOf(entity);
- if (position >= 0) {
- for (property in this.nodeCollections) {
- if (this.nodeCollections.hasOwnProperty(property)) {
- this.nodeCollections[property].remove(entity);
- }
- }
-
- this.entities.splice(position, 1);
- return true;
- }
-
- return false;
- },
-
- /*
- * Given a Node Class, retrieves a list of all the nodes for each
- * applicable entity.
- */
- getNodes : function getNodes(nodeType) {
- var nodeCollection;
-
- if (this.nodeCollections.hasOwnProperty(nodeType)) {
- return this.nodeCollections[nodeType].nodes;
- }
-
- nodeCollection = new Serpentity.NodeCollection({
- type : nodeType,
- });
- this.nodeCollections[nodeType] = nodeCollection;
-
- this.entities.forEach(function (entity) {
- nodeCollection.add(entity);
- });
-
- return nodeCollection.nodes;
- },
-
- /*
- * Calls update for every loaded system.
- */
- update : function update(dt) {
- this.systems.forEach(function (system) {
- system.update(dt);
- });
- }
- }
-});
-
-require("./component.js");
-require("./entity.js");
-require("./node.js");
-require("./node_collection.js");
-require("./system.js");
git.r.bdr.sh / rbdr / serpentity / blobdiff