git.r.bdr.sh - rbdr/sumo/blob - lib/systems/reduce

 import { System } from '@serpentity/serpentity';

3 import LimitedVelocityNode from '../nodes/limited_velocity';

5 /**

6 * Reduces velocity if it exceeds threshold

7 *

8 * @extends {external:Serpentity.System}

9 * @class ReduceVelocitySystem

10 * @param {object} config a configuration object to extend.

11 */

12 export default class ReduceVelocitySystem extends System {

14 constructor(config = {}) {

16 super();

18 /**

19 * The node collection of entities that have external force

20 *

21 * @property {external:Serpentity.NodeCollection} limitedVelocityEntities

22 * @instance

23 * @memberof ReduceVelocitySystem

24 */

     this.limitedVelocityEntities = null;

26 }

28 /**

29 * Initializes system when added. Requests limited velocity nodes

30 *

31 * @function added

32 * @memberof ReduceVelocitySystem

33 * @instance

34 * @param {external:Serpentity.Engine} engine the serpentity engine to

35 * which we are getting added

36 */

37 added(engine) {

     this.limitedVelocityEntities = engine.getNodes(LimitedVelocityNode);

40 }

42 /**

43 * Clears system resources when removed.

44 *

45 * @function removed

46 * @instance

47 * @memberof ReduceVelocitySystem

48 */

49 removed() {

     this.limitedVelocityEntities = null;

52 }

54 /**

55 * Runs on every update of the loop. Checks current velocity and adjusts if necessary

56 *

57 * @function update

58 * @instance

59 * @param {Number} currentFrameDuration the duration of the current

60 * frame

61 * @memberof ReduceVelocitySystem

62 */

63 update(currentFrameDuration) {

     for (const limitedVelocityEntity of this.limitedVelocityEntities) {

       console.log(limitedVelocityEntity.body.body.velocity, limitedVelocityEntity.maxVelocity.maxVelocity);

67 }

68 }

69 }