EffectKnockback.java

package com.forgeessentials.worldborder.effect;

import net.minecraft.entity.player.EntityPlayerMP;

import com.forgeessentials.commons.selections.WarpPoint;
import com.forgeessentials.util.WorldUtil;
import com.forgeessentials.util.events.PlayerMoveEvent;
import com.forgeessentials.worldborder.WorldBorder;
import com.forgeessentials.worldborder.WorldBorderEffect;

public class EffectKnockback extends WorldBorderEffect
{

    @Override
    public void playerMove(WorldBorder border, PlayerMoveEvent event)
    {
        EntityPlayerMP player = (EntityPlayerMP) event.entityPlayer;
        if (event.before.getDimension() != event.after.getDimension())
        {
            // Cancel event if player was teleported
            event.setCanceled(true);
            return;
        }

        double dx = event.after.getX() - border.getCenter().getX();
        double dz = event.after.getZ() - border.getCenter().getZ();
        double len = Math.sqrt(dx * dx + dz * dz);

        WarpPoint p = new WarpPoint(event.after);
        p.setX(p.getX() - dx / len);
        p.setZ(p.getZ() - dz / len);
        if (!WorldUtil.isFree(p.getWorld(), p.getBlockX(), p.getBlockY(), p.getBlockZ(), 2))
            p.setY(WorldUtil.placeInWorld(p.getWorld(), p.getBlockX(), p.getBlockY(), p.getBlockZ()));

        if (player.ridingEntity != null)
            player.ridingEntity.setLocationAndAngles(p.getX(), p.getY(), p.getZ(), player.ridingEntity.rotationYaw, player.ridingEntity.rotationPitch);
        player.playerNetServerHandler.setPlayerLocation(p.getX(), p.getY(), p.getZ(), player.rotationYaw, player.rotationPitch);
    }
    
}