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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | 3x 3x 3x 7x 6x 4x 4x 4x 4x 2x 1x 1x 1x 4x 4x 4x | import { v1 as uuid } from "uuid";
import { SystemInterface } from "./system";
import { Entity, EntityInterface } from "./entity";
export interface EngineInterface {
getEntities(): Map<string, EntityInterface>;
addEntity(entity: EntityInterface): void;
createEntity(): EntityInterface;
removeEntity(id: string): void;
process(systems: SystemInterface[]): void;
}
export class Engine implements EngineInterface {
protected entities: Map<string, EntityInterface>;
public constructor() {
this.entities = new Map<string, EntityInterface>();
}
public getEntities(): Map<string, EntityInterface> {
return this.entities;
}
public createEntity(): EntityInterface {
const entity = new Entity(this.generateId());
this.addEntity(entity);
return entity;
}
public addEntity(entity: EntityInterface): void {
this.entities.set(entity.getId(), entity);
}
public removeEntity(id: string): void {
if (this.entities.has(id)) {
this.entities.delete(id);
}
}
public process(systems: SystemInterface[]): void {
systems.forEach((system): void => {
system.run();
});
}
protected generateId(): string {
let id: string;
do {
id = uuid();
} while (this.entities.has(id));
return id;
}
}
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