package org.bukkit.util;

import org.bukkit.configuration.serialization.SerializableAs;

import java.util.Map;

/**
 * A vector with a hash function that floors the X, Y, Z components, a la
 * BlockVector in WorldEdit. BlockVectors can be used in hash sets and
 * hash maps. Be aware that BlockVectors are mutable, but it is important
 * that BlockVectors are never changed once put into a hash set or hash map.
 */
@SerializableAs("BlockVector")
public class BlockVector extends Vector
{

	/**
	 * Construct the vector with all components as 0.
	 */
	public BlockVector()
	{
		this.x = 0;
		this.y = 0;
		this.z = 0;
	}

	/**
	 * Construct the vector with another vector.
	 *
	 * @param vec The other vector.
	 */
	public BlockVector(Vector vec)
	{
		this.x = vec.getX();
		this.y = vec.getY();
		this.z = vec.getZ();
	}

	/**
	 * Construct the vector with provided integer components.
	 *
	 * @param x X component
	 * @param y Y component
	 * @param z Z component
	 */
	public BlockVector(int x, int y, int z)
	{
		this.x = x;
		this.y = y;
		this.z = z;
	}

	/**
	 * Construct the vector with provided double components.
	 *
	 * @param x X component
	 * @param y Y component
	 * @param z Z component
	 */
	public BlockVector(double x, double y, double z)
	{
		this.x = x;
		this.y = y;
		this.z = z;
	}

	/**
	 * Construct the vector with provided float components.
	 *
	 * @param x X component
	 * @param y Y component
	 * @param z Z component
	 */
	public BlockVector(float x, float y, float z)
	{
		this.x = x;
		this.y = y;
		this.z = z;
	}

	/**
	 * Checks if another object is equivalent.
	 *
	 * @param obj The other object
	 * @return whether the other object is equivalent
	 */
	@Override
	public boolean equals(Object obj)
	{
		if(!(obj instanceof BlockVector))
		{
			return false;
		}
		BlockVector other = (BlockVector) obj;

		return (int) other.getX() == (int) this.x && (int) other.getY() == (int) this.y && (int) other.getZ() == (int) this.z;

	}

	/**
	 * Returns a hash code for this vector.
	 *
	 * @return hash code
	 */
	@Override
	public int hashCode()
	{
		return (Integer.valueOf((int) x).hashCode() >> 13) ^ (Integer.valueOf((int) y).hashCode() >> 7) ^ Integer.valueOf((int) z).hashCode();
	}

	/**
	 * Get a new block vector.
	 *
	 * @return vector
	 */
	@Override
	public BlockVector clone()
	{
		return (BlockVector) super.clone();
	}

	public static BlockVector deserialize(Map<String, Object> args)
	{
		double x = 0;
		double y = 0;
		double z = 0;

		if(args.containsKey("x"))
		{
			x = (Double) args.get("x");
		}
		if(args.containsKey("y"))
		{
			y = (Double) args.get("y");
		}
		if(args.containsKey("z"))
		{
			z = (Double) args.get("z");
		}

		return new BlockVector(x, y, z);
	}
}