$nbt = new CompoundTag( "", [
                "Pos" => new ListTag(
                "Pos", [
                    new DoubleTag("", $player->x),
                    new DoubleTag("", $player->y+$player->getEyeHeight()),
                    new DoubleTag("", $player->z)
                ]),
                "Motion" => new ListTag("Motion", [
                        new DoubleTag("", -\sin ($player->yaw / 180 * M_PI) *\cos ($player->pitch / 180 * M_PI)),
                        new DoubleTag ("", -\sin ($player->pitch / 180 * M_PI)),
                        new DoubleTag("",\cos ($player->yaw / 180 * M_PI) *\cos ( $player->pitch / 180 * M_PI))
                ] ),
                "Rotation" => new ListTag("Rotation", [
                        new FloatTag("", $player->yaw),
                        new FloatTag("", $player->pitch)
                ] )
        ] );


        $f = 3.0;
         $snowball = Entity::createEntity("Snowball", $player->getlevel(), $nbt);
        $snowball->setMotion($snowball->getMotion()->multiply($f));
        $snowball->spawnToAll();