jumpstorm/engine/entities/Entity.ts

43 lines
1.1 KiB
TypeScript

import { EntityNames, Player } from ".";
import type { Component } from "../components";
export abstract class Entity {
public id: string;
public components: Map<string, Component>;
public name: string;
constructor(name: string, id: string = crypto.randomUUID()) {
this.name = name;
this.id = id;
this.components = new Map();
}
public addComponent(component: Component) {
this.components.set(component.name, component);
}
public getComponent<T extends Component>(name: string): T {
if (!this.hasComponent(name)) {
throw new Error("Entity does not have component " + name);
}
return this.components.get(name) as T;
}
public getComponents(): Component[] {
return Array.from(this.components.values());
}
public hasComponent(name: string): boolean {
return this.components.has(name);
}
static from(entityName: string, args: any): Entity {
switch (entityName) {
case EntityNames.Player:
return new Player(args.playerId);
default:
throw new Error(".from() Entity type not implemented: " + entityName);
}
}
}