jscoord/src/CoordChunk.js

A simple Map coordinate system for NodeJS and potentially the browser.

const JSCoord = require("./JSCoord")
class CoordChunk {
	/**
   * Create a new Coordinate Chunk.
   * @param {Number} maxLength
  */
	constructor (maxLength = Infinity) {
		this.limit = maxLength
		this.sets = []
	}
	/**
   * Add a Set to the Chunk.
   * @param {Number[]|JSCoord} coords
   */
	addSet (coords) {
		if (
			(this.sets.findIndex(t => t.x == coords.x && t.y == coords.y && t.z == coords.z) > -1) ||
      (this.limit < this.sets.length + 1)
		) {
			throw new Error("Invaild coordinates or maximum Chunk size reached.")
		} else {
			if (coords instanceof JSCoord) {
				this.sets.push(coords)
			} else {
				this.sets.push(new JSCoord(coords))
			}
			return this
		}
	}
	/**
   * Get a Set from the Chunk.
   * @param {Number[]} coords Index or coordinate set of target.
   * @returns {JSCoord}
   */
	getSet (coords) {
		let item = (typeof coords == "number") ? this.sets[coords] : this.sets.find(t => t.x == coords[0] && t.y == coords[1] && t.z == coords[2])
		if (item) {
			return item
		} else {
			throw new Error("Set not found in Chunk.")
		}
	}
	/**
   * Delete a Set from the Chunk.
   * @param {Number[]|JSCoord} coords
   * @returns {JSCoord}
   */
	delSet (coords) {
		var index
		if (coords instanceof JSCoord) {
			index = this.sets.findIndex(t =>
				t.x == coords.x &&
          t.y == coords.y &&
          t.z == coords.z
			)
		} else {
			index = this.sets.findIndex(t =>
				t.x == coords[0] &&
          t.y == coords[1] &&
          t.z == coords[2]
			)
		}
		if (index > -1) {
			this.sets.splice(index, 1)
			return this
		} else {
			throw new Error("Set not found in Chunk.")
		}
	}
}

module.exports = CoordChunk