minecraft.js/lib/vector3.js

Minecraft data serialization/deserialization and networking

var Vector2 = require(__dirname + '/vector2.js');

/** @constructor */
var Vector3 = module.exports = function(x, y, z) {
	this.x = x;
	this.y = y;
	this.z = z;
};

Vector3.prototype.toString = function() {
	return "(" + this.x + ", " + this.y + ", " + this.z + ")";
};

Vector3.prototype.add = function(v2) {
	if(typeof v2 == 'number') {
		v2 = new Vector3(v2, v2, v2);
	}
    return new Vector3(
		this.x + v2.x,
		this.y + v2.y,
		this.z + v2.z
	);
};

Vector3.prototype.subtract = function(v2) {
	if(typeof v2 == 'number') {
		v2 = new Vector3(v2, v2, v2);
	}
    return new Vector3(
		this.x - v2.x,
		this.y - v2.y,
		this.z - v2.z
	);
};

Vector3.prototype.multiply = function(v2) {
	if(typeof v2 == 'number') {
		v2 = new Vector3(v2, v2, v2);
	}
    return new Vector3(
		this.x * v2.x,
		this.y * v2.y,
		this.z * v2.z
	);
};

Vector3.prototype.divide = function(v2) {
	if(typeof v2 == 'number') {
		v2 = new Vector3(v2, v2, v2);
	}
    return new Vector3(
		this.x / v2.x,
		this.y / v2.y,
		this.z / v2.z
	);
};

Vector3.prototype.floor = function() {
	return new Vector3(
		Math.floor(this.x),
		Math.floor(this.y),
		Math.floor(this.z)
	);
};

Vector3.prototype.ceil = function() {
	return new Vector3(
		Math.ceil(this.x),
		Math.ceil(this.y),
		Math.ceil(this.z)
	);
};

Vector3.prototype.round = function(v2) {
	return new Vector3(
		Math.round(this.x),
		Math.round(this.y),
		Math.round(this.z)
	);
};

Vector3.prototype.angleTo = function(v2) {
	var diff = v2.subtract(this);
	var groundDistance = Math.sqrt(Math.pow(diff.x, 2) + Math.pow(diff.z, 2));
	var yaw = 360 - ((Math.atan2(diff.x, diff.z) * (180 / Math.PI)) % 360),
		pitch = (Math.atan2(groundDistance, diff.y) * (180 / Math.PI) - 90) % 360;
		
    return new Vector2(yaw, pitch);
};

Vector3.prototype.distanceTo = function(v2) {
	var diff = v2.subtract(this);
	var groundDistance = Math.sqrt(Math.pow(diff.x, 2) + Math.pow(diff.z, 2));
	
    return Math.sqrt(Math.pow(groundDistance, 2) + Math.pow(diff.y, 2));
};

Vector3.prototype.groundDistanceTo = function(v2) {
	var diff = v2.subtract(this);
	
	return Math.sqrt(Math.pow(diff.x, 2) + Math.pow(diff.z, 2));
};

Vector3.prototype.getChunk = function(v2) {
	var floor = this.floor();
	
	return new Vector2(
		floor.x >> 4,
		floor.z >> 4
	);
};