Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import { uuid } from "@jga/generators";
import { Command, CommandManager, CommandResultInterface, WorldInterface, SystemInterface } from "@jga/patterns";
import { GameMap, PositionInterface } from "../maps/index";
import { Scheduler } from "./scheduler";
import { Loop } from "./loop";
import { Entity, EntityFactoryInterface, Player } from "./entities";
import { isPositionComponent, ComponentName } from "./components";
export class World implements WorldInterface {
protected entities: Map<string, Entity>;
protected systems: Set<SystemInterface>;
private player!: Player;
private readonly scheduler: Scheduler;
private readonly map: GameMap;
private readonly loop: Loop;
private readonly commandManager: CommandManager;
private readonly entityFactory: EntityFactoryInterface;
// eslint-disable-next-line max-params
public constructor(
scheduler: Scheduler,
map: GameMap,
commandManager: CommandManager,
factory: EntityFactoryInterface,
) {
// eslint-disable-next-line compat/compat
this.entities = new Map<string, Entity>();
// eslint-disable-next-line compat/compat
this.systems = new Set<SystemInterface>();
this.scheduler = scheduler;
this.map = map;
this.loop = new Loop(this.scheduler);
this.commandManager = commandManager;
this.entityFactory = factory;
}
public addEntity(entity: Entity, repeatable = false): Map<string, Entity> {
this.scheduler.add(entity, repeatable);
return this.entities.set(entity.getId(), entity);
}
public removeEntity(entity: Entity): Map<string, Entity> {
if (this.entities.has(entity.getId())) {
this.scheduler.remove(entity);
this.entities.delete(entity.getId());
}
return this.entities;
}
public createEntity(): Entity {
const entity = new Entity(this.generateId());
this.addEntity(entity);
return entity;
}
public getEntities(): Map<string, Entity> {
return this.entities;
}
public createPlayer(): Player {
this.player = new Player(this.generateId());
this.addEntityAtRandomPosition(this.player, true);
return this.getPlayer();
}
public getSystems(): Set<SystemInterface> {
return this.systems;
}
public registerSystems(systems: SystemInterface[]): void {
this.systems.clear();
for (const system of systems) this.systems.add(system);
}
public getPlayer(): Player {
return this.player;
}
public getMap(): GameMap {
return this.map;
}
public execute(command: Command): CommandResultInterface {
return this.commandManager.execute(command);
}
public process(): void {
return this.systems.forEach((system): void => {
system.run(this);
});
}
public run(system: SystemInterface): void {
system.run(this);
}
public addEntityAtRandomPosition(entity: Entity, repeatable = false): Map<string, Entity> {
if (entity.hasComponent(ComponentName.POSITION)) {
const component = entity.getComponent(ComponentName.POSITION);
if (isPositionComponent(component)) {
component.setPosition(this.getRandomFloorPosition());
}
this.addEntity(entity, repeatable);
}
return this.entities;
}
public lock(): Loop {
return this.loop.lock();
}
public unlock(): Loop {
return this.loop.unlock();
}
public async mainLoop(): Promise<Loop> {
return this.loop.start();
}
public getRandomFloorPosition(): PositionInterface {
let x: number;
let y: number;
// eslint-disable-next-line no-loops/no-loops
do {
x = random(0, this.map.getWidth() - 1);
y = random(0, this.map.getHeight() - 1);
} while (!this.isEmptyFloor({ x, y }));
return this.hasTargetAtPosition({ x, y }) ? { x, y } : this.getRandomFloorPosition();
}
public isEmptyFloor(position: PositionInterface): boolean {
return !this.isNotEmptyFloor(position);
}
private isNotEmptyFloor(position: PositionInterface): boolean {
return this.map.getTile(position) !== null && !this.map.getTile(position).isWalkable;
}
public getEntityFactory(): EntityFactoryInterface {
return this.entityFactory;
}
protected generateId(): string {
let id: string;
// eslint-disable-next-line no-loops/no-loops
do {
id = uuid();
} while (this.entities.has(id));
return id;
}
private hasTargetAtPosition(position: PositionInterface): boolean {
// eslint-disable-next-line compat/compat
const targets: Entity[] = Array.from(this.entities.values()).filter((entity) => {
const component = entity.getComponent(ComponentName.POSITION);
return isPositionComponent(component) ? position === component.getPosition() : false;
});
return targets.length === 0;
}
}
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