mirror of https://github.com/minetest/minetest.git
126 lines
2.8 KiB
C++
126 lines
2.8 KiB
C++
/*
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Minetest-c55
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Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "pointedthing.h"
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#include "serialize.h"
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#include <sstream>
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PointedThing::PointedThing():
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type(POINTEDTHING_NOTHING),
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node_undersurface(0,0,0),
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node_abovesurface(0,0,0),
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object_id(-1)
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{}
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std::string PointedThing::dump() const
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{
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std::ostringstream os(std::ios::binary);
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if(type == POINTEDTHING_NOTHING)
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{
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os<<"[nothing]";
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}
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else if(type == POINTEDTHING_NODE)
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{
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const v3s16 &u = node_undersurface;
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const v3s16 &a = node_abovesurface;
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os<<"[node under="<<u.X<<","<<u.Y<<","<<u.Z
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<< " above="<<a.X<<","<<a.Y<<","<<a.Z<<"]";
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}
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else if(type == POINTEDTHING_OBJECT)
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{
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os<<"[object "<<object_id<<"]";
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}
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else
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{
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os<<"[unknown PointedThing]";
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}
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return os.str();
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}
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void PointedThing::serialize(std::ostream &os) const
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{
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writeU8(os, 0); // version
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writeU8(os, (u8)type);
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if(type == POINTEDTHING_NOTHING)
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{
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// nothing
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}
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else if(type == POINTEDTHING_NODE)
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{
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writeV3S16(os, node_undersurface);
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writeV3S16(os, node_abovesurface);
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}
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else if(type == POINTEDTHING_OBJECT)
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{
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writeS16(os, object_id);
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}
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}
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void PointedThing::deSerialize(std::istream &is)
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{
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int version = readU8(is);
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if(version != 0) throw SerializationError(
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"unsupported PointedThing version");
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type = (PointedThingType) readU8(is);
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if(type == POINTEDTHING_NOTHING)
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{
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// nothing
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}
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else if(type == POINTEDTHING_NODE)
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{
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node_undersurface = readV3S16(is);
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node_abovesurface = readV3S16(is);
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}
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else if(type == POINTEDTHING_OBJECT)
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{
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object_id = readS16(is);
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}
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else
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{
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throw SerializationError(
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"unsupported PointedThingType");
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}
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}
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bool PointedThing::operator==(const PointedThing &pt2) const
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{
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if(type != pt2.type)
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return false;
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if(type == POINTEDTHING_NODE)
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{
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if(node_undersurface != pt2.node_undersurface)
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return false;
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if(node_abovesurface != pt2.node_abovesurface)
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return false;
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}
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else if(type == POINTEDTHING_OBJECT)
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{
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if(object_id != pt2.object_id)
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return false;
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}
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return true;
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}
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bool PointedThing::operator!=(const PointedThing &pt2) const
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{
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return !(*this == pt2);
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}
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