Initial commit

common/ecs/world.ts

@@ -0,0 +1,34 @@
+import type { Entity } from "./entity.ts";
+import type { System } from "./system.ts";
+
+export class World {
+	entities = new Set<Entity>();
+	systems = new Set<System>();
+	tags = new Map<string, Entity[]>();
+
+	add_entity(entity: Entity) {
+		this.entities.add(entity);
+	}
+
+	add_system(system: System) {
+		this.systems.add(system);
+	}
+
+	add_tag(tag: string, entities: Entity[]) {
+		this.tags.set(tag, entities);
+	}
+
+	get_tag(tag: string) {
+		return this.tags.get(tag);
+	}
+
+	update(delta: number) {
+		for (const system of this.systems) {
+			system.update(this, delta);
+		}
+	}
+
+	get_entities() {
+		return this.entities;
+	}
+}