how do i make a player not able to move, even in spectator?

You can change a player's speed using Attributes.MOVEMENT_SPEED either directly or using a MobEffect like MobEffects.MOVEMENT_SLOWDOWN

A different way is to look at WebBlock (cobwebs).

There are probably other ways you can do it.

 

I don't think any of these affect spectator mode players? They have noPhysics set to true.

 

A probably glitchy way would be to do something in PlayerTickEvent that remembers where you want them and teleports them back to that location if they move.

Edited August 23, 20223 yr by warjort

4 minutes ago, warjort said:

A probably glitchy way would be to do something in PlayerTickEvent that remembers where you want them and teleports them back to that location if they move.

i tried this:

 

@SubscribeEvent
	public static void playerRespawn(PlayerRespawnEvent event) {
		Player player = event.getPlayer();
		player.getAttribute(Attributes.MAX_HEALTH).setBaseValue(playerhealth - 2);
		
		if (playerhealth == 2) {
			((ServerPlayer) player).setGameMode(GameType.SPECTATOR);
			Vec3 playerPos = player.position();
			teleportPlayer (player, playerPos);
		}
	}

	static void teleportPlayer(Player player, Vec3 position) {
		while (playerhealth == 0) {
			player.setpos(position);
			}
	}

but it just crashed me...without crashing me. basically nothing worked anymore from what i know, because i was stuck in spectator and commands didn't work anymore

while (playerhealth == 0) {
			player.setpos(position);
			}

You know what an infinite loop is?

an infinite loop is a loop that keeps looping until that condition is met, right?

Do you think player.setPos() ever changes the playerHeath value?

This is also not the correct way to teleport an entity anyway.

I also don't see what setting a player's position to its current position achieves, beyond redundant work?

And just doing it at respawn isn't going to affect the player after that.

Pretty sure you can just use a mixin on PlayerEntity and override the "isImmobile" method

Mixin is the last thing you should use, it's in no way recommend and officially not supported on this Forum.

In general it's better to create a PR to Forge to add a Hook or a Event for this that to use Mixin.