import { Jump, Forces, Acceleration, ComponentNames, Velocity, Mass, } from "../components"; import { KeyConstants, PhysicsConstants } from "../config"; import type { Entity } from "../entities"; import { Action } from "../interfaces"; import { System, SystemNames } from "./"; export class Input extends System { private keys: Set; private actionTimeStamps: Map; constructor() { super(SystemNames.Input); this.keys = new Set(); this.actionTimeStamps = new Map(); } public keyPressed(key: string) { this.keys.add(key); } public keyReleased(key: string) { this.keys.delete(key); } private hasSomeKey(keys: string[]): boolean { return keys.some((key) => this.keys.has(key)); } public update( dt: number, entityMap: Map, componentEntities: Map> ) { componentEntities.get(ComponentNames.Control)?.forEach((entityId) => { const entity = entityMap.get(entityId); if (!entity.hasComponent(ComponentNames.Velocity)) { return; } const velocity = entity.getComponent(ComponentNames.Velocity); if (this.hasSomeKey(KeyConstants.ActionKeys.get(Action.MOVE_RIGHT))) { velocity.dCartesian.dx = PhysicsConstants.PLAYER_MOVE_VEL; } else if ( this.hasSomeKey(KeyConstants.ActionKeys.get(Action.MOVE_LEFT)) ) { velocity.dCartesian.dx = -PhysicsConstants.PLAYER_MOVE_VEL; } else { velocity.dCartesian.dx = 0; } }); componentEntities.get(ComponentNames.Jump)?.forEach((entityId) => { const entity = entityMap.get(entityId); const jump = entity.getComponent(ComponentNames.Jump); const velocity = entity.getComponent(ComponentNames.Velocity); if (this.hasSomeKey(KeyConstants.ActionKeys.get(Action.JUMP))) { if (jump.canJump) { this.actionTimeStamps.set(Action.JUMP, performance.now()); velocity.dCartesian.dy = PhysicsConstants.PLAYER_JUMP_INITIAL_VEL; jump.canJump = false; } if ( performance.now() - this.actionTimeStamps.get(Action.JUMP) < PhysicsConstants.MAX_JUMP_TIME_MS ) { const mass = entity.getComponent(ComponentNames.Mass).mass; entity.getComponent(ComponentNames.Forces)?.forces.push({ fCartesian: { fy: mass * PhysicsConstants.PLAYER_JUMP_ACC }, }); } } }); } }