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import { System } from '@serpentity/serpentity';
import DrawnGrabberNode from '../nodes/drawn_grabber';
/**
* Shows a different graphic during the duration of lock
*
* @extends {external:Serpentity.System}
* @class DrawGrabSystem
* @param {object} config a configuration object to extend.
*/
export default class DrawGrabSystem extends System {
constructor(config = {}) {
super();
/**
* The node collection of grabbers
*
* @property {external:Serpentity.NodeCollection} drawnGrabbers
* @instance
* @memberof DrawGrabSystem
*/
this.drawnGrabbers = null;
}
/**
* Initializes system when added. Requests drawn grabber nodes
*
* @function added
* @memberof DrawGrabSystem
* @instance
* @param {external:Serpentity.Engine} engine the serpentity engine to
* which we are getting added
*/
added(engine) {
this.drawnGrabbers = engine.getNodes(DrawnGrabberNode);
}
/**
* Clears system resources when removed.
*
* @function removed
* @instance
* @memberof DrawGrabSystem
*/
removed() {
this.drawnGrabbers = null;
}
/**
* Runs on every update of the loop. Updates image depending on if
* grab is locked and active
*
* @function update
* @instance
* @param {Number} currentFrameDuration the duration of the current
* frame
* @memberof DrawGrabSystem
*/
update(currentFrameDuration) {
for (const drawnGrabber of this.drawnGrabbers) {
const grab = drawnGrabber.grab;
const container = drawnGrabber.container.container;
if (grab.locked && grab.constraint) {
this._drawGrabFace(container);
continue;
}
if (grab.locked) {
this._drawGrabCooldownFace(container);
continue;
}
this._removeGrabFace(container);
}
}
// Draws the grab face
_drawGrabFace(container) {
const effort = container.getChildByName('effort');
const shadow = container.getChildByName('shadow');
effort.visible = true;
shadow.visible = false;
}
// Draws the grab cooldown face
_drawGrabCooldownFace(container) {
const effort = container.getChildByName('effort');
const shadow = container.getChildByName('shadow');
effort.visible = false;
shadow.visible = true;
}
// Removes the dash face
_removeGrabFace(container) {
const effort = container.getChildByName('effort');
const shadow = container.getChildByName('shadow');
effort.visible = false;
shadow.visible = false;
}
}
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