123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320 |
- /*
- Minetest
- Copyright (C) 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 "voxel.h"
- #include "map.h"
- #include "gettime.h"
- #include "nodedef.h"
- #include "util/directiontables.h"
- #include "util/timetaker.h"
- #include <cstring> // memcpy, memset
- /*
- Debug stuff
- */
- u64 addarea_time = 0;
- u64 emerge_time = 0;
- u64 emerge_load_time = 0;
- u64 clearflag_time = 0;
- VoxelManipulator::~VoxelManipulator()
- {
- clear();
- }
- void VoxelManipulator::clear()
- {
- // Reset area to volume=0
- m_area = VoxelArea();
- delete[] m_data;
- m_data = nullptr;
- delete[] m_flags;
- m_flags = nullptr;
- }
- void VoxelManipulator::print(std::ostream &o, const NodeDefManager *ndef,
- VoxelPrintMode mode)
- {
- const v3s16 &em = m_area.getExtent();
- v3s16 of = m_area.MinEdge;
- o<<"size: "<<em.X<<"x"<<em.Y<<"x"<<em.Z
- <<" offset: ("<<of.X<<","<<of.Y<<","<<of.Z<<")"<<std::endl;
- for(s32 y=m_area.MaxEdge.Y; y>=m_area.MinEdge.Y; y--)
- {
- if(em.X >= 3 && em.Y >= 3)
- {
- if (y==m_area.MinEdge.Y+2) o<<"^ ";
- else if(y==m_area.MinEdge.Y+1) o<<"| ";
- else if(y==m_area.MinEdge.Y+0) o<<"y x-> ";
- else o<<" ";
- }
- for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
- {
- for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
- {
- u8 f = m_flags[m_area.index(x,y,z)];
- char c;
- if(f & VOXELFLAG_NO_DATA)
- c = 'N';
- else
- {
- c = 'X';
- MapNode n = m_data[m_area.index(x,y,z)];
- content_t m = n.getContent();
- u8 pr = n.param2;
- if(mode == VOXELPRINT_MATERIAL)
- {
- if(m <= 9)
- c = m + '0';
- }
- else if(mode == VOXELPRINT_WATERPRESSURE)
- {
- if(ndef->get(m).isLiquid())
- {
- c = 'w';
- if(pr <= 9)
- c = pr + '0';
- }
- else if(m == CONTENT_AIR)
- {
- c = ' ';
- }
- else
- {
- c = '#';
- }
- }
- else if(mode == VOXELPRINT_LIGHT_DAY)
- {
- if(ndef->get(m).light_source != 0)
- c = 'S';
- else if(!ndef->get(m).light_propagates)
- c = 'X';
- else
- {
- u8 light = n.getLight(LIGHTBANK_DAY, ndef);
- if(light < 10)
- c = '0' + light;
- else
- c = 'a' + (light-10);
- }
- }
- }
- o<<c;
- }
- o<<' ';
- }
- o<<std::endl;
- }
- }
- void VoxelManipulator::addArea(const VoxelArea &area)
- {
- // Cancel if requested area has zero volume
- if (area.hasEmptyExtent())
- return;
- // Cancel if m_area already contains the requested area
- if(m_area.contains(area))
- return;
- TimeTaker timer("addArea", &addarea_time);
- // Calculate new area
- VoxelArea new_area;
- // New area is the requested area if m_area has zero volume
- if(m_area.hasEmptyExtent())
- {
- new_area = area;
- }
- // Else add requested area to m_area
- else
- {
- new_area = m_area;
- new_area.addArea(area);
- }
- s32 new_size = new_area.getVolume();
- /*dstream<<"adding area ";
- area.print(dstream);
- dstream<<", old area ";
- m_area.print(dstream);
- dstream<<", new area ";
- new_area.print(dstream);
- dstream<<", new_size="<<new_size;
- dstream<<std::endl;*/
- // Allocate new data and clear flags
- MapNode *new_data = new MapNode[new_size];
- assert(new_data);
- u8 *new_flags = new u8[new_size];
- assert(new_flags);
- memset(new_flags, VOXELFLAG_NO_DATA, new_size);
- // Copy old data
- s32 old_x_width = m_area.MaxEdge.X - m_area.MinEdge.X + 1;
- for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
- for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
- {
- unsigned int old_index = m_area.index(m_area.MinEdge.X,y,z);
- unsigned int new_index = new_area.index(m_area.MinEdge.X,y,z);
- memcpy(&new_data[new_index], &m_data[old_index],
- old_x_width * sizeof(MapNode));
- memcpy(&new_flags[new_index], &m_flags[old_index],
- old_x_width * sizeof(u8));
- }
- // Replace area, data and flags
- m_area = new_area;
- MapNode *old_data = m_data;
- u8 *old_flags = m_flags;
- /*dstream<<"old_data="<<(int)old_data<<", new_data="<<(int)new_data
- <<", old_flags="<<(int)m_flags<<", new_flags="<<(int)new_flags<<std::endl;*/
- m_data = new_data;
- m_flags = new_flags;
- delete[] old_data;
- delete[] old_flags;
- //dstream<<"addArea done"<<std::endl;
- }
- void VoxelManipulator::copyFrom(MapNode *src, const VoxelArea& src_area,
- v3s16 from_pos, v3s16 to_pos, const v3s16 &size)
- {
- /* The reason for this optimised code is that we're a member function
- * and the data type/layout of m_data is know to us: it's stored as
- * [z*h*w + y*h + x]. Therefore we can take the calls to m_area index
- * (which performs the preceding mapping/indexing of m_data) out of the
- * inner loop and calculate the next index as we're iterating to gain
- * performance.
- *
- * src_step and dest_step is the amount required to be added to our index
- * every time y increments. Because the destination area may be larger
- * than the source area we need one additional variable (otherwise we could
- * just continue adding dest_step as is done for the source data): dest_mod.
- * dest_mod is the difference in size between a "row" in the source data
- * and a "row" in the destination data (I am using the term row loosely
- * and for illustrative purposes). E.g.
- *
- * src <-------------------->|'''''' dest mod ''''''''
- * dest <--------------------------------------------->
- *
- * dest_mod (it's essentially a modulus) is added to the destination index
- * after every full iteration of the y span.
- *
- * This method falls under the category "linear array and incrementing
- * index".
- */
- s32 src_step = src_area.getExtent().X;
- s32 dest_step = m_area.getExtent().X;
- s32 dest_mod = m_area.index(to_pos.X, to_pos.Y, to_pos.Z + 1)
- - m_area.index(to_pos.X, to_pos.Y, to_pos.Z)
- - dest_step * size.Y;
- s32 i_src = src_area.index(from_pos.X, from_pos.Y, from_pos.Z);
- s32 i_local = m_area.index(to_pos.X, to_pos.Y, to_pos.Z);
- for (s16 z = 0; z < size.Z; z++) {
- for (s16 y = 0; y < size.Y; y++) {
- memcpy(&m_data[i_local], &src[i_src], size.X * sizeof(*m_data));
- memset(&m_flags[i_local], 0, size.X);
- i_src += src_step;
- i_local += dest_step;
- }
- i_local += dest_mod;
- }
- }
- void VoxelManipulator::copyTo(MapNode *dst, const VoxelArea& dst_area,
- v3s16 dst_pos, v3s16 from_pos, const v3s16 &size)
- {
- for(s16 z=0; z<size.Z; z++)
- for(s16 y=0; y<size.Y; y++)
- {
- s32 i_dst = dst_area.index(dst_pos.X, dst_pos.Y+y, dst_pos.Z+z);
- s32 i_local = m_area.index(from_pos.X, from_pos.Y+y, from_pos.Z+z);
- for (s16 x = 0; x < size.X; x++) {
- if (m_data[i_local].getContent() != CONTENT_IGNORE)
- dst[i_dst] = m_data[i_local];
- i_dst++;
- i_local++;
- }
- }
- }
- /*
- Algorithms
- -----------------------------------------------------
- */
- void VoxelManipulator::clearFlag(u8 flags)
- {
- // 0-1ms on moderate area
- TimeTaker timer("clearFlag", &clearflag_time);
- //v3s16 s = m_area.getExtent();
- /*dstream<<"clearFlag clearing area of size "
- <<""<<s.X<<"x"<<s.Y<<"x"<<s.Z<<""
- <<std::endl;*/
- //s32 count = 0;
- /*for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
- for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
- for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
- {
- u8 f = m_flags[m_area.index(x,y,z)];
- m_flags[m_area.index(x,y,z)] &= ~flags;
- if(m_flags[m_area.index(x,y,z)] != f)
- count++;
- }*/
- s32 volume = m_area.getVolume();
- for(s32 i=0; i<volume; i++)
- {
- m_flags[i] &= ~flags;
- }
- /*s32 volume = m_area.getVolume();
- for(s32 i=0; i<volume; i++)
- {
- u8 f = m_flags[i];
- m_flags[i] &= ~flags;
- if(m_flags[i] != f)
- count++;
- }
- dstream<<"clearFlag changed "<<count<<" flags out of "
- <<volume<<" nodes"<<std::endl;*/
- }
- const MapNode VoxelManipulator::ContentIgnoreNode = MapNode(CONTENT_IGNORE);
- //END
|