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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(const v3s16 &under, const v3s16 &above,
const v3s16 &real_under, const v3f &point, const v3s16 &normal,
u16 box_id, f32 distSq) :
type(POINTEDTHING_NODE),
node_undersurface(under), node_abovesurface(above),
node_real_undersurface(real_under), intersection_point(point),
intersection_normal(normal), box_id(box_id), distanceSq(distSq)
{
}
PointedThing::PointedThing(s16 id, const v3f &point, const v3s16 &normal, f32 distSq) :
type(POINTEDTHING_OBJECT), object_id(id), intersection_point(point),
intersection_normal(normal), distanceSq(distSq)
{
}
std::string PointedThing::dump() const
{
std::ostringstream os(std::ios::binary);
switch (type) {
case POINTEDTHING_NOTHING:
os << "[nothing]";
break;
case 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 << "]";
} break;
case POINTEDTHING_OBJECT:
os << "[object " << object_id << "]";
break;
default:
os << "[unknown PointedThing]";
}
return os.str();
}
void PointedThing::serialize(std::ostream &os) const
{
writeU8(os, 0); // version
writeU8(os, (u8)type);
switch (type) {
case POINTEDTHING_NOTHING:
break;
case POINTEDTHING_NODE:
writeV3S16(os, node_undersurface);
writeV3S16(os, node_abovesurface);
break;
case POINTEDTHING_OBJECT:
writeS16(os, object_id);
break;
}
}
void PointedThing::deSerialize(std::istream &is)
{
int version = readU8(is);
if (version != 0)
throw SerializationError("unsupported PointedThing version");
type = (PointedThingType)readU8(is);
switch (type) {
case POINTEDTHING_NOTHING:
break;
case POINTEDTHING_NODE:
node_undersurface = readV3S16(is);
node_abovesurface = readV3S16(is);
break;
case POINTEDTHING_OBJECT:
object_id = readS16(is);
break;
default:
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) ||
(node_abovesurface != pt2.node_abovesurface) ||
(node_real_undersurface != pt2.node_real_undersurface))
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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