private static Vec3 getPositionEyes(Entity entity){
        Vec3 result;

        /*double d0 = entity.prevPosX + (entity.posX - entity.prevPosX) * (double) (float) 0;
        double d1 = entity.prevPosY + (entity.posY - entity.prevPosY) * (double) (float) 0 + (double) entity.getEyeHeight();
        double d2 = entity.prevPosZ + (entity.posZ - entity.prevPosZ) * (double) (float) 0;
        result = new Vec3(d0, d1, d2);*/

        result = new Vec3(entity.posX, entity.posY + (double) entity.getEyeHeight(), entity.posZ);

        return result;

    }


    @Override
    public void execute(ICommandSender sender, String[] args) throws CommandException {
        // TODO Auto-generated method stub
        System.out.println("Comando pmSet recibido!");
        World world = sender.getEntityWorld();
        if (sender.getCommandSenderEntity()==null){
            System.out.println("NULL!");
        }
        Entity player = sender.getCommandSenderEntity();


        //BlockPos pos = Minecraft.getMinecraft().objectMouseOver.getBlockPos();
        Vec3 vec3 = getPositionEyes(player);
        Vec3 vec31 = player.getLook((float) 0);
        Vec3 vec32 = vec3.addVector(vec31.xCoord * (double) 0, vec31.yCoord * (double) 0, vec31.zCoord * (double) 0);
        MovingObjectPosition mop = player.worldObj.rayTraceBlocks(vec3, vec32, false, false, true);