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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "pointedthing.h"
#include "serialize.h"
#include "../exceptions.h"
#include <sstream>
PointedThing::PointedThing():
type(POINTEDTHING_NOTHING),
node_undersurface(0,0,0),
node_abovesurface(0,0,0),
object_id(-1)
{}
std::string PointedThing::dump() const
{
std::ostringstream os(std::ios::binary);
if(type == POINTEDTHING_NOTHING)
{
os<<"[nothing]";
}
else if(type == POINTEDTHING_NODE)
{
const v3s16 &u = node_undersurface;
const v3s16 &a = node_abovesurface;
os<<"[node under="<<u.X<<","<<u.Y<<","<<u.Z
<< " above="<<a.X<<","<<a.Y<<","<<a.Z<<"]";
}
else if(type == POINTEDTHING_OBJECT)
{
os<<"[object "<<object_id<<"]";
}
else
{
os<<"[unknown PointedThing]";
}
return os.str();
}
void PointedThing::serialize(std::ostream &os) const
{
writeU8(os, 0); // version
writeU8(os, (u8)type);
if(type == POINTEDTHING_NOTHING)
{
// nothing
}
else if(type == POINTEDTHING_NODE)
{
writeV3S16(os, node_undersurface);
writeV3S16(os, node_abovesurface);
}
else if(type == POINTEDTHING_OBJECT)
{
writeS16(os, object_id);
}
}
void PointedThing::deSerialize(std::istream &is)
{
int version = readU8(is);
if(version != 0) throw SerializationError(
"unsupported PointedThing version");
type = (PointedThingType) readU8(is);
if(type == POINTEDTHING_NOTHING)
{
// nothing
}
else if(type == POINTEDTHING_NODE)
{
node_undersurface = readV3S16(is);
node_abovesurface = readV3S16(is);
}
else if(type == POINTEDTHING_OBJECT)
{
object_id = readS16(is);
}
else
{
throw SerializationError(
"unsupported PointedThingType");
}
}
bool PointedThing::operator==(const PointedThing &pt2) const
{
if(type != pt2.type)
return false;
if(type == POINTEDTHING_NODE)
{
if(node_undersurface != pt2.node_undersurface)
return false;
if(node_abovesurface != pt2.node_abovesurface)
return false;
}
else if(type == POINTEDTHING_OBJECT)
{
if(object_id != pt2.object_id)
return false;
}
return true;
}
bool PointedThing::operator!=(const PointedThing &pt2) const
{
return !(*this == pt2);
}
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