963 lines
21 KiB
C++
963 lines
21 KiB
C++
/*
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Minetest-c55
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Copyright (C) 2010 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 General Public License as published by
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the Free Software Foundation; either version 2 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 General Public License for more details.
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You should have received a copy of the GNU 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 "voxel.h"
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#include "map.h"
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// For TimeTaker
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#include "utility.h"
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#include "gettime.h"
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/*
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Debug stuff
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*/
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u32 addarea_time = 0;
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u32 emerge_time = 0;
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u32 emerge_load_time = 0;
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u32 clearflag_time = 0;
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//u32 getwaterpressure_time = 0;
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//u32 spreadwaterpressure_time = 0;
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u32 updateareawaterpressure_time = 0;
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u32 flowwater_pre_time = 0;
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VoxelManipulator::VoxelManipulator():
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m_data(NULL),
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m_flags(NULL)
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{
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m_disable_water_climb = false;
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}
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VoxelManipulator::~VoxelManipulator()
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{
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clear();
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if(m_data)
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delete[] m_data;
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if(m_flags)
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delete[] m_flags;
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}
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void VoxelManipulator::clear()
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{
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// Reset area to volume=0
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m_area = VoxelArea();
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if(m_data)
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delete[] m_data;
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m_data = NULL;
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if(m_flags)
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delete[] m_flags;
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m_flags = NULL;
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}
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void VoxelManipulator::print(std::ostream &o, VoxelPrintMode mode)
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{
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v3s16 em = m_area.getExtent();
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v3s16 of = m_area.MinEdge;
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o<<"size: "<<em.X<<"x"<<em.Y<<"x"<<em.Z
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<<" offset: ("<<of.X<<","<<of.Y<<","<<of.Z<<")"<<std::endl;
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for(s32 y=m_area.MaxEdge.Y; y>=m_area.MinEdge.Y; y--)
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{
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if(em.X >= 3 && em.Y >= 3)
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{
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if (y==m_area.MinEdge.Y+2) o<<"^ ";
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else if(y==m_area.MinEdge.Y+1) o<<"| ";
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else if(y==m_area.MinEdge.Y+0) o<<"y x-> ";
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else o<<" ";
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}
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for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
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{
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for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
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{
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u8 f = m_flags[m_area.index(x,y,z)];
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char c;
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if(f & VOXELFLAG_NOT_LOADED)
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c = 'N';
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else if(f & VOXELFLAG_INEXISTENT)
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c = 'I';
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else
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{
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c = 'X';
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u8 m = m_data[m_area.index(x,y,z)].d;
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u8 pr = m_data[m_area.index(x,y,z)].pressure;
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if(mode == VOXELPRINT_MATERIAL)
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{
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if(m <= 9)
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c = m + '0';
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}
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else if(mode == VOXELPRINT_WATERPRESSURE)
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{
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if(m == CONTENT_WATER)
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{
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c = 'w';
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if(pr <= 9)
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c = pr + '0';
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}
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else if(liquid_replaces_content(m))
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{
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c = ' ';
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}
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else
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{
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c = '#';
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}
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}
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}
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o<<c;
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}
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o<<' ';
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}
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o<<std::endl;
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}
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}
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void VoxelManipulator::addArea(VoxelArea area)
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{
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// Cancel if requested area has zero volume
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if(area.getExtent() == v3s16(0,0,0))
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return;
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// Cancel if m_area already contains the requested area
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if(m_area.contains(area))
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return;
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TimeTaker timer("addArea", &addarea_time);
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// Calculate new area
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VoxelArea new_area;
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// New area is the requested area if m_area has zero volume
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if(m_area.getExtent() == v3s16(0,0,0))
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{
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new_area = area;
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}
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// Else add requested area to m_area
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else
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{
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new_area = m_area;
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new_area.addArea(area);
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}
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s32 new_size = new_area.getVolume();
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/*dstream<<"adding area ";
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area.print(dstream);
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dstream<<", old area ";
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m_area.print(dstream);
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dstream<<", new area ";
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new_area.print(dstream);
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dstream<<", new_size="<<new_size;
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dstream<<std::endl;*/
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// Allocate and clear new data
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MapNode *new_data = new MapNode[new_size];
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u8 *new_flags = new u8[new_size];
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for(s32 i=0; i<new_size; i++)
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{
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new_flags[i] = VOXELFLAG_NOT_LOADED;
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}
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// Copy old data
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for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
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for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
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for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
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{
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// If loaded, copy data and flags
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if((m_flags[m_area.index(x,y,z)] & VOXELFLAG_NOT_LOADED) == false)
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{
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new_data[new_area.index(x,y,z)] = m_data[m_area.index(x,y,z)];
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new_flags[new_area.index(x,y,z)] = m_flags[m_area.index(x,y,z)];
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}
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}
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// Replace area, data and flags
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m_area = new_area;
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MapNode *old_data = m_data;
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u8 *old_flags = m_flags;
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/*dstream<<"old_data="<<(int)old_data<<", new_data="<<(int)new_data
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<<", old_flags="<<(int)m_flags<<", new_flags="<<(int)new_flags<<std::endl;*/
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m_data = new_data;
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m_flags = new_flags;
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if(old_data)
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delete[] old_data;
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if(old_flags)
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delete[] old_flags;
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//dstream<<"addArea done"<<std::endl;
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}
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void VoxelManipulator::copyFrom(MapNode *src, VoxelArea src_area,
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v3s16 from_pos, v3s16 to_pos, v3s16 size)
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{
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for(s16 z=0; z<size.Z; z++)
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for(s16 y=0; y<size.Y; y++)
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{
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s32 i_src = src_area.index(from_pos.X, from_pos.Y+y, from_pos.Z+z);
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s32 i_local = m_area.index(to_pos.X, to_pos.Y+y, to_pos.Z+z);
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memcpy(&m_data[i_local], &src[i_src], size.X*sizeof(MapNode));
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memset(&m_flags[i_local], 0, size.X);
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}
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}
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void VoxelManipulator::interpolate(VoxelArea area)
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{
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VoxelArea emerge_area = area;
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emerge_area.MinEdge -= v3s16(1,1,1);
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emerge_area.MaxEdge += v3s16(1,1,1);
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emerge(emerge_area);
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SharedBuffer<u8> buf(area.getVolume());
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for(s32 z=area.MinEdge.Z; z<=area.MaxEdge.Z; z++)
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for(s32 y=area.MinEdge.Y; y<=area.MaxEdge.Y; y++)
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for(s32 x=area.MinEdge.X; x<=area.MaxEdge.X; x++)
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{
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v3s16 p(x,y,z);
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v3s16 dirs[] = {
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v3s16(1,1,0),
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v3s16(1,0,1),
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v3s16(1,-1,0),
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v3s16(1,0,-1),
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v3s16(-1,1,0),
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v3s16(-1,0,1),
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v3s16(-1,-1,0),
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v3s16(-1,0,-1),
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};
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//const v3s16 *dirs = g_26dirs;
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s16 total = 0;
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s16 airness = 0;
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u8 m = CONTENT_IGNORE;
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for(s16 i=0; i<8; i++)
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//for(s16 i=0; i<26; i++)
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{
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v3s16 p2 = p + dirs[i];
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u8 f = m_flags[m_area.index(p2)];
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assert(!(f & VOXELFLAG_NOT_LOADED));
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if(f & VOXELFLAG_INEXISTENT)
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continue;
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MapNode &n = m_data[m_area.index(p2)];
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airness += (n.d == CONTENT_AIR) ? 1 : -1;
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total++;
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if(m == CONTENT_IGNORE && n.d != CONTENT_AIR)
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m = n.d;
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}
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// 1 if air, 0 if not
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buf[area.index(p)] = airness > -total/2 ? CONTENT_AIR : m;
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//buf[area.index(p)] = airness > -total ? CONTENT_AIR : m;
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//buf[area.index(p)] = airness >= -7 ? CONTENT_AIR : m;
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}
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for(s32 z=area.MinEdge.Z; z<=area.MaxEdge.Z; z++)
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for(s32 y=area.MinEdge.Y; y<=area.MaxEdge.Y; y++)
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for(s32 x=area.MinEdge.X; x<=area.MaxEdge.X; x++)
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{
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v3s16 p(x,y,z);
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m_data[m_area.index(p)].d = buf[area.index(p)];
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}
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}
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void VoxelManipulator::clearFlag(u8 flags)
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{
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// 0-1ms on moderate area
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TimeTaker timer("clearFlag", &clearflag_time);
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v3s16 s = m_area.getExtent();
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/*dstream<<"clearFlag clearing area of size "
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<<""<<s.X<<"x"<<s.Y<<"x"<<s.Z<<""
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<<std::endl;*/
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//s32 count = 0;
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/*for(s32 z=m_area.MinEdge.Z; z<=m_area.MaxEdge.Z; z++)
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for(s32 y=m_area.MinEdge.Y; y<=m_area.MaxEdge.Y; y++)
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for(s32 x=m_area.MinEdge.X; x<=m_area.MaxEdge.X; x++)
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{
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u8 f = m_flags[m_area.index(x,y,z)];
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m_flags[m_area.index(x,y,z)] &= ~flags;
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if(m_flags[m_area.index(x,y,z)] != f)
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count++;
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}*/
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s32 volume = m_area.getVolume();
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for(s32 i=0; i<volume; i++)
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{
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m_flags[i] &= ~flags;
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}
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/*s32 volume = m_area.getVolume();
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for(s32 i=0; i<volume; i++)
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{
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u8 f = m_flags[i];
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m_flags[i] &= ~flags;
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if(m_flags[i] != f)
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count++;
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}
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dstream<<"clearFlag changed "<<count<<" flags out of "
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<<volume<<" nodes"<<std::endl;*/
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}
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int VoxelManipulator::getWaterPressure(v3s16 p, s16 &highest_y, int recur_count)
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{
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m_flags[m_area.index(p)] |= VOXELFLAG_CHECKED2;
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if(p.Y > highest_y)
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highest_y = p.Y;
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/*if(recur_count > 1000)
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throw ProcessingLimitException
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("getWaterPressure recur_count limit reached");*/
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if(recur_count > 10000)
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return -1;
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recur_count++;
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v3s16 dirs[6] = {
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v3s16(0,1,0), // top
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v3s16(0,0,1), // back
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v3s16(0,0,-1), // front
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v3s16(1,0,0), // right
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v3s16(-1,0,0), // left
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v3s16(0,-1,0), // bottom
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};
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// Load neighboring nodes
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emerge(VoxelArea(p - v3s16(1,1,1), p + v3s16(1,1,1)), 1);
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s32 i;
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for(i=0; i<6; i++)
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{
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v3s16 p2 = p + dirs[i];
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u8 f = m_flags[m_area.index(p2)];
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// Ignore inexistent or checked nodes
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if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED2))
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continue;
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MapNode &n = m_data[m_area.index(p2)];
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// Ignore non-liquid nodes
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if(content_liquid(n.d) == false)
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continue;
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int pr;
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// If at ocean surface
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if(n.pressure == 1 && n.d == CONTENT_OCEAN)
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//if(n.pressure == 1) // Causes glitches but is fast
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{
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pr = 1;
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}
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// Otherwise recurse more
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else
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{
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pr = getWaterPressure(p2, highest_y, recur_count);
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if(pr == -1)
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continue;
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}
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// If block is at top, pressure here is one higher
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if(i == 0)
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{
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if(pr < 255)
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pr++;
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}
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// If block is at bottom, pressure here is one lower
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else if(i == 5)
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{
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if(pr > 1)
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pr--;
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}
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// Node is on the pressure route
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m_flags[m_area.index(p)] |= VOXELFLAG_CHECKED4;
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// Got pressure
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return pr;
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}
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// Nothing useful found
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return -1;
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}
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void VoxelManipulator::spreadWaterPressure(v3s16 p, int pr,
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VoxelArea request_area,
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core::map<v3s16, u8> &active_nodes,
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int recur_count)
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{
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//if(recur_count > 10000)
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/*throw ProcessingLimitException
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("spreadWaterPressure recur_count limit reached");*/
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if(recur_count > 10)
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return;
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recur_count++;
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/*dstream<<"spreadWaterPressure: p=("
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<<p.X<<","<<p.Y<<","<<p.Z<<")"
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<<", oldpr="<<(int)m_data[m_area.index(p)].pressure
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<<", pr="<<pr
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<<", recur_count="<<recur_count
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<<", request_area=";
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request_area.print(dstream);
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dstream<<std::endl;*/
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m_flags[m_area.index(p)] |= VOXELFLAG_CHECKED3;
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m_data[m_area.index(p)].pressure = pr;
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v3s16 dirs[6] = {
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v3s16(0,1,0), // top
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v3s16(-1,0,0), // left
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v3s16(1,0,0), // right
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v3s16(0,0,-1), // front
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v3s16(0,0,1), // back
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v3s16(0,-1,0), // bottom
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};
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// Load neighboring nodes
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emerge(VoxelArea(p - v3s16(1,1,1), p + v3s16(1,1,1)), 2);
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s32 i;
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for(i=0; i<6; i++)
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{
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v3s16 p2 = p + dirs[i];
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u8 f = m_flags[m_area.index(p2)];
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// Ignore inexistent and checked nodes
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if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED3))
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continue;
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MapNode &n = m_data[m_area.index(p2)];
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/*
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If material is air:
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add to active_nodes if there is flow-causing pressure.
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NOTE: Do not remove anything from there. We cannot know
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here if some other neighbor of it causes flow.
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*/
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if(liquid_replaces_content(n.d))
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{
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bool pressure_causes_flow = false;
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// If empty block is at top
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if(i == 0)
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{
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if(m_disable_water_climb)
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continue;
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//if(pr >= PRESERVE_WATER_VOLUME ? 3 : 2)
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if(pr >= 3)
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pressure_causes_flow = true;
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}
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// If block is at bottom
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else if(i == 5)
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{
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pressure_causes_flow = true;
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}
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// If block is at side
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else
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{
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//if(pr >= PRESERVE_WATER_VOLUME ? 2 : 1)
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if(pr >= 2)
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pressure_causes_flow = true;
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}
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if(pressure_causes_flow)
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{
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active_nodes[p2] = 1;
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}
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continue;
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}
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// Ignore non-liquid nodes
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if(content_liquid(n.d) == false)
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continue;
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int pr2 = pr;
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// If block is at top, pressure there is lower
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if(i == 0)
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{
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if(pr2 > 0)
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pr2--;
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}
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// If block is at bottom, pressure there is higher
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else if(i == 5)
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{
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if(pr2 < 255)
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pr2++;
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}
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|
|
/*if(m_disable_water_climb)
|
|
{
|
|
if(pr2 > 3)
|
|
pr2 = 3;
|
|
}*/
|
|
|
|
// Ignore if correct pressure is already set and is not on
|
|
// request_area.
|
|
// Thus, request_area can be used for updating as much
|
|
// pressure info in some area as possible to possibly
|
|
// make some calls to getWaterPressure unnecessary.
|
|
if(n.pressure == pr2 && request_area.contains(p2) == false)
|
|
continue;
|
|
|
|
spreadWaterPressure(p2, pr2, request_area, active_nodes, recur_count);
|
|
}
|
|
}
|
|
|
|
void VoxelManipulator::updateAreaWaterPressure(VoxelArea a,
|
|
core::map<v3s16, u8> &active_nodes,
|
|
bool checked3_is_clear)
|
|
{
|
|
TimeTaker timer("updateAreaWaterPressure", &updateareawaterpressure_time);
|
|
|
|
emerge(a, 3);
|
|
|
|
bool checked2_clear = false;
|
|
|
|
if(checked3_is_clear == false)
|
|
{
|
|
//clearFlag(VOXELFLAG_CHECKED3);
|
|
|
|
clearFlag(VOXELFLAG_CHECKED3 | VOXELFLAG_CHECKED2);
|
|
checked2_clear = true;
|
|
}
|
|
|
|
|
|
for(s32 z=a.MinEdge.Z; z<=a.MaxEdge.Z; z++)
|
|
for(s32 y=a.MinEdge.Y; y<=a.MaxEdge.Y; y++)
|
|
for(s32 x=a.MinEdge.X; x<=a.MaxEdge.X; x++)
|
|
{
|
|
v3s16 p(x,y,z);
|
|
|
|
u8 f = m_flags[m_area.index(p)];
|
|
// Ignore inexistent or checked nodes
|
|
if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED3))
|
|
continue;
|
|
MapNode &n = m_data[m_area.index(p)];
|
|
// Ignore non-liquid nodes
|
|
if(content_liquid(n.d) == false)
|
|
continue;
|
|
|
|
if(checked2_clear == false)
|
|
{
|
|
clearFlag(VOXELFLAG_CHECKED2);
|
|
checked2_clear = true;
|
|
}
|
|
|
|
checked2_clear = false;
|
|
|
|
s16 highest_y = -32768;
|
|
int recur_count = 0;
|
|
int pr = -1;
|
|
|
|
try
|
|
{
|
|
// 0-1ms @ recur_count <= 100
|
|
//TimeTaker timer("getWaterPressure", g_irrlicht);
|
|
pr = getWaterPressure(p, highest_y, recur_count);
|
|
}
|
|
catch(ProcessingLimitException &e)
|
|
{
|
|
//dstream<<"getWaterPressure ProcessingLimitException"<<std::endl;
|
|
}
|
|
|
|
if(pr == -1)
|
|
{
|
|
assert(highest_y != -32768);
|
|
|
|
pr = highest_y - p.Y + 1;
|
|
if(pr > 255)
|
|
pr = 255;
|
|
|
|
/*dstream<<"WARNING: Pressure at ("
|
|
<<p.X<<","<<p.Y<<","<<p.Z<<")"
|
|
<<" = "<<pr
|
|
//<<" and highest_y == -32768"
|
|
<<std::endl;
|
|
assert(highest_y != -32768);
|
|
continue;*/
|
|
}
|
|
|
|
try
|
|
{
|
|
// 0ms
|
|
//TimeTaker timer("spreadWaterPressure", g_irrlicht);
|
|
spreadWaterPressure(p, pr, a, active_nodes, 0);
|
|
}
|
|
catch(ProcessingLimitException &e)
|
|
{
|
|
//dstream<<"getWaterPressure ProcessingLimitException"<<std::endl;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool VoxelManipulator::flowWater(v3s16 removed_pos,
|
|
core::map<v3s16, u8> &active_nodes,
|
|
int recursion_depth, bool debugprint,
|
|
u32 stoptime)
|
|
{
|
|
v3s16 dirs[6] = {
|
|
v3s16(0,1,0), // top
|
|
v3s16(0,0,-1), // front
|
|
v3s16(0,0,1), // back
|
|
v3s16(-1,0,0), // left
|
|
v3s16(1,0,0), // right
|
|
v3s16(0,-1,0), // bottom
|
|
};
|
|
|
|
recursion_depth++;
|
|
|
|
v3s16 p;
|
|
bool from_ocean = false;
|
|
|
|
// Randomize horizontal order
|
|
static s32 cs = 0;
|
|
if(cs < 3)
|
|
cs++;
|
|
else
|
|
cs = 0;
|
|
s16 s1 = (cs & 1) ? 1 : -1;
|
|
s16 s2 = (cs & 2) ? 1 : -1;
|
|
//dstream<<"s1="<<s1<<", s2="<<s2<<std::endl;
|
|
|
|
{
|
|
TimeTaker timer1("flowWater pre", &flowwater_pre_time);
|
|
|
|
// Load neighboring nodes
|
|
emerge(VoxelArea(removed_pos - v3s16(1,1,1), removed_pos + v3s16(1,1,1)), 4);
|
|
|
|
// Ignore incorrect removed_pos
|
|
{
|
|
u8 f = m_flags[m_area.index(removed_pos)];
|
|
// Ignore inexistent or checked node
|
|
if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED))
|
|
return false;
|
|
MapNode &n = m_data[m_area.index(removed_pos)];
|
|
// Ignore nodes to which the water can't go
|
|
if(liquid_replaces_content(n.d) == false)
|
|
return false;
|
|
}
|
|
|
|
s32 i;
|
|
for(i=0; i<6; i++)
|
|
{
|
|
// Don't raise water from bottom
|
|
if(m_disable_water_climb && i == 5)
|
|
continue;
|
|
|
|
p = removed_pos + v3s16(s1*dirs[i].X, dirs[i].Y, s2*dirs[i].Z);
|
|
|
|
u8 f = m_flags[m_area.index(p)];
|
|
// Inexistent or checked nodes can't move
|
|
if(f & (VOXELFLAG_INEXISTENT | VOXELFLAG_CHECKED))
|
|
continue;
|
|
MapNode &n = m_data[m_area.index(p)];
|
|
// Only liquid nodes can move
|
|
if(content_liquid(n.d) == false)
|
|
continue;
|
|
// If block is at top, select it always
|
|
if(i == 0)
|
|
{
|
|
break;
|
|
}
|
|
// If block is at bottom, select it if it has enough pressure
|
|
if(i == 5)
|
|
{
|
|
//if(n.pressure >= PRESERVE_WATER_VOLUME ? 3 : 2)
|
|
if(n.pressure >= 3)
|
|
break;
|
|
continue;
|
|
}
|
|
// Else block is at some side. Select it if it has enough pressure
|
|
//if(n.pressure >= PRESERVE_WATER_VOLUME ? 2 : 1)
|
|
if(n.pressure >= 2)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
// If there is nothing to move, return
|
|
if(i==6)
|
|
return false;
|
|
|
|
/*
|
|
Move water and bubble
|
|
*/
|
|
|
|
u8 m = m_data[m_area.index(p)].d;
|
|
u8 f = m_flags[m_area.index(p)];
|
|
|
|
if(m == CONTENT_OCEAN)
|
|
from_ocean = true;
|
|
|
|
// Move air bubble if not taking water from ocean
|
|
if(from_ocean == false)
|
|
{
|
|
m_data[m_area.index(p)].d = m_data[m_area.index(removed_pos)].d;
|
|
m_flags[m_area.index(p)] = m_flags[m_area.index(removed_pos)];
|
|
}
|
|
|
|
/*
|
|
This has to be done to copy the brightness of a light source
|
|
correctly. Otherwise unspreadLight will fuck up when water
|
|
has replaced a light source.
|
|
*/
|
|
u8 light = m_data[m_area.index(removed_pos)].getLightBanksWithSource();
|
|
|
|
m_data[m_area.index(removed_pos)].d = m;
|
|
m_flags[m_area.index(removed_pos)] = f;
|
|
|
|
m_data[m_area.index(removed_pos)].setLightBanks(light);
|
|
|
|
// Mark removed_pos checked
|
|
m_flags[m_area.index(removed_pos)] |= VOXELFLAG_CHECKED;
|
|
|
|
// If block was dropped from surface, increase pressure
|
|
if(i == 0 && m_data[m_area.index(removed_pos)].pressure == 1)
|
|
{
|
|
m_data[m_area.index(removed_pos)].pressure = 2;
|
|
}
|
|
|
|
/*
|
|
NOTE: This does not work as-is
|
|
if(m == CONTENT_OCEAN)
|
|
{
|
|
// If block was raised to surface, increase pressure of
|
|
// source node
|
|
if(i == 5 && m_data[m_area.index(p)].pressure == 1)
|
|
{
|
|
m_data[m_area.index(p)].pressure = 2;
|
|
}
|
|
}*/
|
|
|
|
/*if(debugprint)
|
|
{
|
|
dstream<<"VoxelManipulator::flowWater(): Moved bubble:"<<std::endl;
|
|
print(dstream, VOXELPRINT_WATERPRESSURE);
|
|
}*/
|
|
|
|
// Update pressure
|
|
VoxelArea a;
|
|
a.addPoint(p - v3s16(1,1,1));
|
|
a.addPoint(p + v3s16(1,1,1));
|
|
a.addPoint(removed_pos - v3s16(1,1,1));
|
|
a.addPoint(removed_pos + v3s16(1,1,1));
|
|
updateAreaWaterPressure(a, active_nodes);
|
|
|
|
/*if(debugprint)
|
|
{
|
|
dstream<<"VoxelManipulator::flowWater(): Pressure updated:"<<std::endl;
|
|
print(dstream, VOXELPRINT_WATERPRESSURE);
|
|
//std::cin.get();
|
|
}*/
|
|
|
|
if(debugprint)
|
|
{
|
|
dstream<<"VoxelManipulator::flowWater(): step done:"<<std::endl;
|
|
print(dstream, VOXELPRINT_WATERPRESSURE);
|
|
//std::cin.get();
|
|
}
|
|
|
|
}//timer1
|
|
|
|
//if(PRESERVE_WATER_VOLUME)
|
|
if(from_ocean == false)
|
|
{
|
|
// Flow water to the newly created empty position
|
|
/*flowWater(p, active_nodes, recursion_depth,
|
|
debugprint, counter, counterlimit);*/
|
|
flowWater(p, active_nodes, recursion_depth,
|
|
debugprint, stoptime);
|
|
}
|
|
|
|
if(stoptime != 0)
|
|
{
|
|
u32 timenow = getTimeMs();
|
|
if(timenow >= stoptime ||
|
|
(stoptime < 0x80000000 && timenow > 0x80000000))
|
|
{
|
|
dstream<<"flowWater: stoptime reached"<<std::endl;
|
|
throw ProcessingLimitException("flowWater stoptime reached");
|
|
}
|
|
}
|
|
|
|
find_again:
|
|
|
|
// Try flowing water to empty positions around removed_pos.
|
|
// They are checked in reverse order compared to the previous loop.
|
|
for(s32 i=5; i>=0; i--)
|
|
{
|
|
// Don't try to flow to top
|
|
if(m_disable_water_climb && i == 0)
|
|
continue;
|
|
|
|
//v3s16 p = removed_pos + dirs[i];
|
|
p = removed_pos + v3s16(s1*dirs[i].X, dirs[i].Y, s2*dirs[i].Z);
|
|
|
|
u8 f = m_flags[m_area.index(p)];
|
|
// Water can't move to inexistent nodes
|
|
if(f & VOXELFLAG_INEXISTENT)
|
|
continue;
|
|
MapNode &n = m_data[m_area.index(p)];
|
|
// Water can only move to air
|
|
if(liquid_replaces_content(n.d) == false)
|
|
continue;
|
|
|
|
// Flow water to node
|
|
bool moved =
|
|
flowWater(p, active_nodes, recursion_depth,
|
|
debugprint, stoptime);
|
|
/*flowWater(p, active_nodes, recursion_depth,
|
|
debugprint, counter, counterlimit);*/
|
|
|
|
if(moved)
|
|
{
|
|
// Search again from all neighbors
|
|
goto find_again;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void VoxelManipulator::flowWater(
|
|
core::map<v3s16, u8> &active_nodes,
|
|
int recursion_depth, bool debugprint,
|
|
u32 timelimit)
|
|
{
|
|
addarea_time = 0;
|
|
emerge_time = 0;
|
|
emerge_load_time = 0;
|
|
clearflag_time = 0;
|
|
updateareawaterpressure_time = 0;
|
|
flowwater_pre_time = 0;
|
|
|
|
if(active_nodes.size() == 0)
|
|
{
|
|
dstream<<"flowWater: no active nodes"<<std::endl;
|
|
return;
|
|
}
|
|
|
|
//TimeTaker timer1("flowWater (active_nodes)", g_irrlicht);
|
|
|
|
//dstream<<"active_nodes.size() = "<<active_nodes.size()<<std::endl;
|
|
|
|
|
|
u32 stoptime = 0;
|
|
stoptime = getTimeMs() + timelimit;
|
|
|
|
// Count of handled active nodes
|
|
u32 handled_count = 0;
|
|
|
|
try
|
|
{
|
|
|
|
/*
|
|
Take random one at first
|
|
|
|
This is randomized only at the first time so that all
|
|
subsequent nodes will be taken at roughly the same position
|
|
*/
|
|
s32 k = 0;
|
|
if(active_nodes.size() != 0)
|
|
k = (s32)rand() % (s32)active_nodes.size();
|
|
|
|
// Flow water to active nodes
|
|
for(;;)
|
|
//for(s32 h=0; h<1; h++)
|
|
{
|
|
if(active_nodes.size() == 0)
|
|
break;
|
|
|
|
handled_count++;
|
|
|
|
// Clear check flags
|
|
clearFlag(VOXELFLAG_CHECKED);
|
|
|
|
//dstream<<"Selecting a new active_node"<<std::endl;
|
|
|
|
#if 0
|
|
// Take first one
|
|
core::map<v3s16, u8>::Node
|
|
*n = active_nodes.getIterator().getNode();
|
|
#endif
|
|
|
|
#if 1
|
|
|
|
core::map<v3s16, u8>::Iterator
|
|
i = active_nodes.getIterator().getNode();
|
|
for(s32 j=0; j<k; j++)
|
|
{
|
|
i++;
|
|
}
|
|
core::map<v3s16, u8>::Node *n = i.getNode();
|
|
|
|
// Decrement index if less than 0.
|
|
// This keeps us in existing indices always.
|
|
if(k > 0)
|
|
k--;
|
|
#endif
|
|
|
|
v3s16 p = n->getKey();
|
|
active_nodes.remove(p);
|
|
flowWater(p, active_nodes, recursion_depth,
|
|
debugprint, stoptime);
|
|
}
|
|
|
|
}
|
|
catch(ProcessingLimitException &e)
|
|
{
|
|
//dstream<<"getWaterPressure ProcessingLimitException"<<std::endl;
|
|
}
|
|
|
|
/*v3s16 e = m_area.getExtent();
|
|
s32 v = m_area.getVolume();
|
|
dstream<<"flowWater (active): "
|
|
<<"area ended up as "
|
|
<<e.X<<"x"<<e.Y<<"x"<<e.Z<<" = "<<v
|
|
<<", handled a_node count: "<<handled_count
|
|
<<", active_nodes.size() = "<<active_nodes.size()
|
|
<<std::endl;
|
|
dstream<<"addarea_time: "<<addarea_time
|
|
<<", emerge_time: "<<emerge_time
|
|
<<", emerge_load_time: "<<emerge_load_time
|
|
<<", clearflag_time: "<<clearflag_time
|
|
<<", flowwater_pre_time: "<<flowwater_pre_time
|
|
<<", updateareawaterpressure_time: "<<updateareawaterpressure_time
|
|
<<std::endl;*/
|
|
}
|
|
|
|
|
|
//END
|