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what is the mistake here?


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The essence of this code, when any player appears at coordinates 120 x 20 at z and at any height, he will be teleported 2 blocks back at x and z coordinates and will write a message that other players cannot see in any way

import com.mojang.authlib.GameProfile;
import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.util.math.BlockPos;
import net.minecraft.util.math.vector.Vector3d;
import net.minecraft.util.text.StringTextComponent;
//import net.minecraft.util.text.TranslationTextComponent;
import net.minecraft.world.World;

public class ClassName extends PlayerEntity{
    public ClassName(World p_i241920_1_, BlockPos p_i241920_2_, float p_i241920_3_, GameProfile p_i241920_4_) {
        super(p_i241920_1_, p_i241920_2_, p_i241920_3_, p_i241920_4_);
        Vector3d no_escape = new Vector3d(120.000, position().y, 20.000);
        Vector3d PlPos = position();
            if(PlPos.x == no_escape.x && PlPos.z==no_escape.z) {
            teleportTo(no_escape.x-2, no_escape.y-0, no_escape.z-2);
            sendMessage(new StringTextComponent("No way!"), getUUID());


    public boolean isSpectator() {
        return false;

    public boolean isCreative() {
        return false;


Edited by NastyStuffy
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1 minute ago, NastyStuffy said:

Using this event, you can turn off teleportation


1 minute ago, NastyStuffy said:

prohibit being on the territory or on the block?

use the TickEvent.Player for this,
you need to set the motion of the player to 0 if the block in his walking direction is the block he shouldn't enter

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