37 lines
1.1 KiB
TypeScript
37 lines
1.1 KiB
TypeScript
import {
|
|
ComponentNames,
|
|
Velocity,
|
|
FacingDirection as FacingDirectionComponent,
|
|
} from "../components";
|
|
import { Game } from "../Game";
|
|
import type { Entity } from "../entities";
|
|
import { System, SystemNames } from "./";
|
|
|
|
export class FacingDirection extends System {
|
|
constructor() {
|
|
super(SystemNames.FacingDirection);
|
|
}
|
|
|
|
public update(_dt: number, game: Game) {
|
|
game.componentEntities
|
|
.get(ComponentNames.FacingDirection)
|
|
?.forEach((entityId) => {
|
|
const entity = game.entities.get(entityId);
|
|
if (!entity.hasComponent(ComponentNames.Velocity)) {
|
|
return;
|
|
}
|
|
|
|
const velocity = entity.getComponent<Velocity>(ComponentNames.Velocity);
|
|
const facingDirection = entity.getComponent<FacingDirectionComponent>(
|
|
ComponentNames.FacingDirection
|
|
);
|
|
|
|
if (velocity.dCartesian.dx > 0) {
|
|
entity.addComponent(facingDirection.facingRightSprite);
|
|
} else if (velocity.dCartesian.dx < 0) {
|
|
entity.addComponent(facingDirection.facingLeftSprite);
|
|
}
|
|
});
|
|
}
|
|
}
|