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Diffstat (limited to 'src/util/pointedthing.cpp')
-rw-r--r-- | src/util/pointedthing.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/util/pointedthing.cpp b/src/util/pointedthing.cpp new file mode 100644 index 000000000..d1be2d6b6 --- /dev/null +++ b/src/util/pointedthing.cpp @@ -0,0 +1,125 @@ +/* +Minetest-c55 +Copyright (C) 2010-2012 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 <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); +} + |