forked from Mirrorlandia_minetest/minetest
3f8261830e
* Improved getPointedThing() The new algorithm checks every node exactly once. Now the point and normal vector of the collision is also returned in the PointedThing (currently they are not used outside of the function). Now the CNodeDefManager keeps the union of all possible nodeboxes, so the raycast won't miss any nodes. Also if there are only small nodeboxes, getPointedThing() is exceptionally fast. Also adds unit test for VoxelLineIterator. * Cleanup, code move This commit moves getPointedThing() and Client::getSelectedActiveObject() to ClientEnvironment. The map nodes now can decide which neighbors they are connecting to (MapNode::getNeighbors()).
118 lines
2.9 KiB
C++
118 lines
2.9 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():
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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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node_real_undersurface(0,0,0),
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intersection_point(0,0,0),
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intersection_normal(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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os<<"[nothing]";
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} else if (type == POINTEDTHING_NODE) {
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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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} else if (type == POINTEDTHING_OBJECT) {
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os<<"[object "<<object_id<<"]";
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} else {
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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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writeS16(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 = (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 = readS16(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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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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