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import { System } from '@serpentity/serpentity';
import LimitedVelocityNode from '../nodes/limited_velocity';
/**
* Reduces velocity if it exceeds threshold
*
* @extends {external:Serpentity.System}
* @class ReduceVelocitySystem
* @param {object} config a configuration object to extend.
*/
export default class ReduceVelocitySystem extends System {
constructor(config = {}) {
super();
/**
* The node collection of entities that have external force
*
* @property {external:Serpentity.NodeCollection} limitedVelocityEntities
* @instance
* @memberof ReduceVelocitySystem
*/
this.limitedVelocityEntities = null;
}
/**
* Initializes system when added. Requests limited velocity nodes
*
* @function added
* @memberof ReduceVelocitySystem
* @instance
* @param {external:Serpentity.Engine} engine the serpentity engine to
* which we are getting added
*/
added(engine) {
this.limitedVelocityEntities = engine.getNodes(LimitedVelocityNode);
}
/**
* Clears system resources when removed.
*
* @function removed
* @instance
* @memberof ReduceVelocitySystem
*/
removed() {
this.limitedVelocityEntities = null;
}
/**
* Runs on every update of the loop. Checks current velocity and adjusts if necessary
*
* @function update
* @instance
* @param {Number} currentFrameDuration the duration of the current
* frame
* @memberof ReduceVelocitySystem
*/
update(currentFrameDuration) {
for (const limitedVelocityEntity of this.limitedVelocityEntities) {
console.log(limitedVelocityEntity.body.body.velocity, limitedVelocityEntity.maxVelocity.maxVelocity);
}
}
}
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