rot-js/addons/level.js

A roguelike toolkit in JavaScript

class Level {
	constructor() {
		// FIXME data structure for storing entities
		this._beings = {};

		// FIXME map data
		this._size = new XY(80, 25);
		this._map = {};

		this._empty = new Entity({ch:".", fg:"#888", bg:null});
	}

	getSize() { return this._size; }

	setEntity(entity, xy) {
		// FIXME remove from old position, draw
		if (entity.getLevel() == this) {
			let oldXY = entity.getXY();
			delete this._beings[oldXY];
			if (Game.level == this) { Game.draw(oldXY); }
		}

		entity.setPosition(xy, this); // propagate position data to the entity itself

		// FIXME set new position, draw
		this._beings[xy] = entity;
		if (Game.level == this) { 
			Game.draw(xy); 
			Game.textBuffer.write("An entity moves to " + xy + ".");
		}
	}

	getEntityAt(xy) {
		return this._beings[xy] || this._map[xy] || this._empty;
	}

	getBeings() {
		// FIXME list of all beings
		return this._beings;
	}
}