Speed for each player

Hi! i'm trying to make a plugin that makes a player fly in the direction they looking. also they can speed up and slow down by pressing blocks (Red stone and Coal blocks), and I'm using a int for that. The problem is that once player clicks on a block, it changes the speed for all the players, and not only for him. so is there a way to do that? PLZ help
p.s this is the code -

Code:

package me.RoBaMe;

import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.block.Action;
import org.bukkit.event.player.PlayerInteractEvent;
import org.bukkit.event.player.PlayerMoveEvent;
import org.bukkit.inventory.ItemStack;

public class MCM implements Listener {
   
    public MCM (MainClass plugin) {
        plugin.getServer().getPluginManager().registerEvents(this, plugin);   
    }
    int VS = 0 ;
    @EventHandler
   
    public void MCE(PlayerMoveEvent e) {
       
        Player p = (Player)e.getPlayer();
        if(e.getFrom().getBlockY() != e.getTo().getBlockY()-1){
            if(p.getLocation().subtract(0, 1, 0).getBlock().getType() == Material.AIR){
                p.setVelocity(p.getLocation().getDirection().multiply(VS));
                public void SU(PlayerInteractEvent u){
                    Player pl =(Player) u.getPlayer();
                    ItemStack[] power = {new ItemStack(Material.SULPHUR)};
                     if(pl.getInventory().getItemInHand().getType() == Material.REDSTONE_BLOCK){
                            if(u.getAction() == Action.RIGHT_CLICK_AIR || u.getAction() == Action.RIGHT_CLICK_BLOCK){
                                if(VS<3){
                                VS = VS + 1;
                                pl.getInventory().addItem(power);
                                }
                               
                        }
                     }
                     else if(pl.getInventory().getItemInHand().getType() == Material.COAL_BLOCK){
                            if(u.getAction() == Action.RIGHT_CLICK_AIR || u.getAction() == Action.RIGHT_CLICK_BLOCK){
                                if(VS>0){
                                VS = VS - 1;
                                pl.getInventory().removeItem(power);;
                                }
                }
            }
                }
                   
               

            }
        }
    }
   
}

                       

 

@RoBaMe You could either:

1. Store the player's UUID and their speed in a map.
2. Store it in a config file.

I suggest storing it in a map because it's easier than having to create a config save defaults and all that. But, if you want it saved even after the server is shutting down, I'd suggest a config file instead.

 

You can use configs without saving them in a file. I found out that when forgot to use my saveConf() method. They will reset after reload.

@RoBaMe
I suggest you putting Actions in PlayerInteractEvent.