games/devtest/mods/basenodes/textures/default_gravel.png

/*
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);
}
ofs	hex dump	ascii
0000	89 50 4e 47 0d 0a 1a 0a 00 00 00 0d 49 48 44 52 00 00 00 10 00 00 00 10 02 03 00 00 00 62 9d 17	.PNG........IHDR.............b..
0020	f2 00 00 00 0c 50 4c 54 45 48 41 36 2d 29 24 89 7d 70 56 4f 48 eb cd ca 56 00 00 00 5a 49 44 41	.....PLTEHA6-)$.}pVOH...V...ZIDA
0040	54 78 01 63 10 3b 97 df ce 70 a7 50 74 3e 83 dc 7d c7 ff 0c 3a 81 f7 f7 33 98 ee ea 9f ca b0 5e	Tx.c.;...p.Pt>..}...:...3......^
0060	5b fc 27 43 4e cf 59 33 06 1b 17 e6 42 06 be fc c2 00 86 da 4c b3 22 86 73 8c 29 7d 0c ce b2 96	[.'CN.Y3....B.......L.".s.)}....
0080	c5 0c 31 ca 26 57 18 4c 2c 1d 36 31 ec d4 dc 57 cf 30 b1 a7 f1 38 00 83 ed 1c 23 bd 64 5e cc 00	..1.&W.L,.61...W.0...8....#.d^..
00a0	00 00 00 49 45 4e 44 ae 42 60 82	...IEND.B`.