jumpstorm/engine/systems/Input.ts

88 lines
2.4 KiB
TypeScript

import {
Jump,
Forces,
ComponentNames,
Velocity,
Mass,
Control,
} from "../components";
import { Game } from "../Game";
import { KeyConstants, PhysicsConstants } from "../config";
import { Action } from "../interfaces";
import { System, SystemNames } from ".";
export class Input extends System {
private keys: Set<string>;
private actionTimeStamps: Map<Action, number>;
constructor() {
super(SystemNames.Input);
this.keys = new Set<string>();
this.actionTimeStamps = new Map<Action, number>();
}
public keyPressed(key: string) {
this.keys.add(key);
}
public keyReleased(key: string) {
this.keys.delete(key);
}
private hasSomeKey(keys?: string[]): boolean {
if (keys) {
return keys.some((key) => this.keys.has(key));
}
return false;
}
public update(_dt: number, game: Game) {
game.forEachEntityWithComponent(ComponentNames.Control, (entity) => {
const controlComponent = entity.getComponent<Control>(
ComponentNames.Control,
);
if (this.hasSomeKey(KeyConstants.ActionKeys.get(Action.MOVE_RIGHT))) {
controlComponent.controlVelocityComponent.velocity.dCartesian.dx +=
PhysicsConstants.PLAYER_MOVE_VEL;
}
if (this.hasSomeKey(KeyConstants.ActionKeys.get(Action.MOVE_LEFT))) {
controlComponent.controlVelocityComponent.velocity.dCartesian.dx +=
-PhysicsConstants.PLAYER_MOVE_VEL;
}
if (entity.hasComponent(ComponentNames.Jump)) {
const velocity = entity.getComponent<Velocity>(
ComponentNames.Velocity,
).velocity;
const jump = entity.getComponent<Jump>(ComponentNames.Jump);
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) || 0) <
PhysicsConstants.MAX_JUMP_TIME_MS
) {
const mass = entity.getComponent<Mass>(ComponentNames.Mass).mass;
entity.getComponent<Forces>(ComponentNames.Forces)?.forces.push({
fCartesian: {
fy: mass * PhysicsConstants.PLAYER_JUMP_ACC,
fx: 0,
},
torque: 0,
});
}
}
}
});
}
}