mirror of https://github.com/minetest/minetest.git
139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
/*
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Minetest
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Copyright (C) 2010-2013 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 "exceptions.h"
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#include <sstream>
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PointedThing::PointedThing(const v3s16 &under, const v3s16 &above,
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const v3s16 &real_under, const v3f &point, const v3f &normal,
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u16 box_id, f32 distSq, PointabilityType pointab):
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type(POINTEDTHING_NODE),
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node_undersurface(under),
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node_abovesurface(above),
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node_real_undersurface(real_under),
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intersection_point(point),
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intersection_normal(normal),
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box_id(box_id),
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distanceSq(distSq),
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pointability(pointab)
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{}
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PointedThing::PointedThing(u16 id, const v3f &point, const v3f &normal,
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const v3f &raw_normal, f32 distSq, PointabilityType pointab) :
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type(POINTEDTHING_OBJECT),
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object_id(id),
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intersection_point(point),
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intersection_normal(normal),
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raw_intersection_normal(raw_normal),
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distanceSq(distSq),
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pointability(pointab)
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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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switch (type) {
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case POINTEDTHING_NOTHING:
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os << "[nothing]";
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break;
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case 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 << " above="
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<< a.X << "," << a.Y << "," << a.Z << "]";
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}
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break;
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case POINTEDTHING_OBJECT:
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os << "[object " << object_id << "]";
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break;
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default:
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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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switch (type) {
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case POINTEDTHING_NOTHING:
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break;
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case POINTEDTHING_NODE:
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writeV3S16(os, node_undersurface);
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writeV3S16(os, node_abovesurface);
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break;
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case POINTEDTHING_OBJECT:
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writeU16(os, object_id);
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break;
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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 = static_cast<PointedThingType>(readU8(is));
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switch (type) {
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case POINTEDTHING_NOTHING:
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break;
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case POINTEDTHING_NODE:
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node_undersurface = readV3S16(is);
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node_abovesurface = readV3S16(is);
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break;
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case POINTEDTHING_OBJECT:
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object_id = readU16(is);
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break;
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default:
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throw SerializationError("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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{
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return false;
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}
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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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|| (node_abovesurface != pt2.node_abovesurface)
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|| (node_real_undersurface != pt2.node_real_undersurface)
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|| (pointability != pt2.pointability))
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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 || pointability != pt2.pointability)
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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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