/**
 * System takes care of updating all the entities (based on their component data)
 * @param apiSystem R3.API.System
 * @constructor
 */
R3.System = function(
    apiSystem
) {

    if (R3.Utils.UndefinedOrNull(apiSystem)) {
        apiSystem = {};
    }

	R3.API.System.call(
		this,
		apiSystem.id,
		apiSystem.name,
		apiSystem.systemType,
		apiSystem.parentEntity
	);

    this.started = false;

    this.paused = false;

    var linkedObjects = {};

    if (apiSystem.systemType === R3.System.SYSTEM_TYPE_INPUT) {
        linkedObjects.mouseControls     = [R3.Controls.Mouse];
        linkedObjects.keyboardControls  = [R3.Controls.Keyboard];
        linkedObjects.touchControls     = [R3.Controls.Touch];
        linkedObjects.editorControls    = [R3.Controls.D3.Editor];
    }

    if (apiSystem.systemType === R3.System.SYSTEM_TYPE_AUDIO) {
        linkedObjects.audioComponents   = [R3.D3.Audio];
    }

    R3.Component.call(
        this,
        linkedObjects
    );

};

R3.System.prototype = Object.create(R3.Component.prototype);
R3.System.prototype.constructor = R3.System;

R3.System.SYSTEM_TYPE_NONE			    = 0x0;
R3.System.SYSTEM_TYPE_RENDER           = 0x1;
R3.System.SYSTEM_TYPE_ANIMATION        = 0x2;
R3.System.SYSTEM_TYPE_INPUT            = 0x4;
R3.System.SYSTEM_TYPE_STORAGE		    = 0x8;
R3.System.SYSTEM_TYPE_GUI			    = 0x10;
R3.System.SYSTEM_TYPE_PHYSICS		    = 0x20;
R3.System.SYSTEM_TYPE_LINKING		    = 0x40;
R3.System.SYSTEM_TYPE_CUSTOM		    = 0x80;
R3.System.SYSTEM_TYPE_VISUALIZATION    = 0x100;
R3.System.SYSTEM_TYPE_PARTICLE         = 0x200;
R3.System.SYSTEM_TYPE_AUDIO            = 0x400;
R3.System.SYSTEM_TYPE_SOCKET           = 0x800;
R3.System.SYSTEM_TYPE_ALL              = 0xFFFF;

R3.System.prototype.createInstance = function() {
    this.instance = true;
    R3.Component.prototype.createInstance.call(this);
};

/**
 * @callback
 * @override
 */
R3.System.prototype.start = function() {
    this.started = true;
//    console.log('starting ' + this.name);
};

/**
 * @callback
 * @override
 */
R3.System.prototype.stop = function() {
    this.started = false;
//    console.log('stopping ' + this.name);
};

/**
 * Converts runtime vector to API Vector
 * @returns {R3.API.System}
 */
R3.System.prototype.toApiObject = function() {
    return new R3.API.System(
        this.id,
        this.name,
        this.systemType,
        R3.Utils.IdOrNull(this.parentEntity)
    );
};

R3.System.prototype.restart = function() {
    console.log('restarting system : ' + this.name);
	this.stop();
	this.start();
};