Freezing & Alignment of player

Hello fellows !

First of all, i'm French, so i'm sorry for my poor english !

Second, it's also my first 'work' on Java, so my post will certainly be a bit... hard to follow !

But i will try my best, and again, sorry


So ! I'm working on this plugin, wich allow admins to 'manage' people during event, by freezing a list of players, teleporting them, ... mass give, ...

But i'm a bit stucked with 2 things !

1*/ I'd like to teleport every player from a list in front of the admin who enter a specific command and align them ! But i don't really understand the vector & location stuff in MC !

Just like that:


So I tried to write a small code, and thanks to someone on the IRC (I think it was 'TomyLobo' ), i can tp every player of my list in front of the player, but at the same spot !

Here is the snippet:

Code:

// adminLoc is a Direction wich contain the admin location
// target is a Player entity in my for wich contain the actual player in the loop
Vector inFront = adminLoc.toVector().add(adminLoc.getDirection().multiply(5));
target.teleport(inFront.toLocation(player.getWorld()));

I tried different things, but I can't align every player correctly !

2*/ I need to be able to 'froze' players in the list but still alowing them to move the view, and i found out how, by doing this:

Code:

    public void onPlayerMove(PlayerMoveEvent event) {
        Player player = event.getPlayer();
        Location fromLoc = event.getFrom();
        Location toLoc = event.getTo();
        if (plugin.checkPlayer(player) && plugin.freezed) {
            player.setFallDistance(0);
            if (toLoc.getX() != fromLoc.getX() || toLoc.getY() != fromLoc.getY() || toLoc.getZ() != fromLoc.getZ()) {
                toLoc.setX(fromLoc.getX());
                toLoc.setY(fromLoc.getY());
                toLoc.setZ(fromLoc.getZ());
                player.sendMessage("[CrowdControl] Don't move !");
                event.setCancelled(true);
                player.teleport(toLoc);
            }
        }
    }

But theyre is a small flaw in this... if I freeze a player while he's jumping, or falling, he's view keep alternate between the fromLoc to the toLoc (it's normal, he's falling...) and the message is spammed.

So I'm looking for a way to "land" the player, but since I'm quit bad with the Location thing, i need help for that part too !

Thanks in advance for your awesome help, I already had been superbly supported on IRC, and I thanks every single people who helped me until now

And again, sorry for my poor english !