Mineplex2018-withcommit/Plugins/Mineplex.Game.Clans/src/mineplex/game/clans/items/legendaries/WindBlade.java

package mineplex.game.clans.items.legendaries;

import org.bukkit.Material;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.util.Vector;

public class WindBlade extends LegendaryItem
{
	public static final double FLIGHT_VELOCITY = 0.75d;
	public static final int MAX_FLIGHT_TIME = 80;	// Max flight of 80 ticks
	
	private long _flightTime;	// Time (in ticks) since last touching ground and flying
	
	public WindBlade()
	{
		super("Wind Blade", "Activate flying ability to take flight for 80 ticks before landing!", Material.RECORD_8);	// TODO: Configurable?
		
		_flightTime = 0;
	}
	
	@Override
	public void update(Player wielder)
	{
		Entity entity = (Entity) wielder;
		
		// Check if player is attempting to fly and activate
		if (isHoldingRightClick() && canPropel())
		{
			propelPlayer(wielder);
		}
		
		// Check if player has touched down
		if (entity.isOnGround())
		{
			_flightTime = 0;
		}
	}

	private void propelPlayer(Player player)
	{
		_flightTime++;
		Vector direction = player.getLocation().getDirection().normalize();
		direction.multiply(FLIGHT_VELOCITY);	// Set velocity magnitude
		
		player.setVelocity(direction);
		player.setFallDistance(0f);	// To prevent bug with fall distances killing players inappropriately.
	}
	
	private boolean canPropel()
	{
		return _flightTime <= MAX_FLIGHT_TIME;
	}
}