src/nodetimer.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "nodetimer.h"
  21 #include "utility.h"
  22 #include "log.h"
  23
  24 /*
  25         NodeTimer
  26 */
  27
  28 void NodeTimer::serialize(std::ostream &os) const
  29 {
  30         writeF1000(os, duration);
  31         writeF1000(os, elapsed);
  32 }
  33
  34 void NodeTimer::deSerialize(std::istream &is)
  35 {
  36         duration = readF1000(is);
  37         elapsed = readF1000(is);
  38 }
  39
  40 /*
  41         NodeTimerList
  42 */
  43
  44 void NodeTimerList::serialize(std::ostream &os) const
  45 {
  46         /*
  47                 Version 0 is a placeholder for "nothing to see here; go away."
  48         */
  49
  50         if(m_data.size() == 0){
  51                 writeU8(os, 0); // version
  52                 return;
  53         }
  54
  55         writeU8(os, 1); // version
  56         writeU16(os, m_data.size());
  57
  58         for(std::map<v3s16, NodeTimer>::const_iterator
  59                         i = m_data.begin();
  60                         i != m_data.end(); i++){
  61                 v3s16 p = i->first;
  62                 NodeTimer t = i->second;
  63
  64                 u16 p16 = p.Z*MAP_BLOCKSIZE*MAP_BLOCKSIZE + p.Y*MAP_BLOCKSIZE + p.X;
  65                 writeU16(os, p16);
  66                 t.serialize(os);
  67         }
  68 }
  69
  70 void NodeTimerList::deSerialize(std::istream &is)
  71 {
  72         m_data.clear();
  73
  74         u8 version = readU8(is);
  75         if(version == 0)
  76                 return;
  77         if(version != 1)
  78                 throw SerializationError("unsupported NodeTimerList version");
  79
  80         u16 count = readU16(is);
  81
  82         for(u16 i=0; i<count; i++)
  83         {
  84                 u16 p16 = readU16(is);
  85
  86                 v3s16 p(0,0,0);
  87                 p.Z += p16 / MAP_BLOCKSIZE / MAP_BLOCKSIZE;
  88                 p16 -= p.Z * MAP_BLOCKSIZE * MAP_BLOCKSIZE;
  89                 p.Y += p16 / MAP_BLOCKSIZE;
  90                 p16 -= p.Y * MAP_BLOCKSIZE;
  91                 p.X += p16;
  92
  93                 NodeTimer t;
  94                 t.deSerialize(is);
  95
  96                 if(t.duration <= 0)
  97                 {
  98                         infostream<<"WARNING: NodeTimerList::deSerialize(): "
  99                                         <<"invalid data at position"
 100                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
 101                                         <<std::endl;
 102                         continue;
 103                 }
 104
 105                 if(m_data.find(p) != m_data.end())
 106                 {
 107                         infostream<<"WARNING: NodeTimerList::deSerialize(): "
 108                                         <<"already set data at position"
 109                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<"): Ignoring."
 110                                         <<std::endl;
 111                         continue;
 112                 }
 113
 114                 m_data.insert(std::make_pair(p, t));
 115         }
 116 }
 117
 118 std::map<v3s16, f32> NodeTimerList::step(float dtime)
 119 {
 120         std::map<v3s16, f32> elapsed_timers;
 121         // Increment timers
 122         for(std::map<v3s16, NodeTimer>::iterator
 123                         i = m_data.begin();
 124                         i != m_data.end(); i++){
 125                 v3s16 p = i->first;
 126                 NodeTimer t = i->second;
 127                 t.elapsed += dtime;
 128                 if(t.elapsed >= t.duration)
 129                         elapsed_timers.insert(std::make_pair(p, t.elapsed));
 130                 else
 131                         i->second = t;
 132         }
 133         // Delete elapsed timers
 134         for(std::map<v3s16, f32>::const_iterator
 135                         i = elapsed_timers.begin();
 136                         i != elapsed_timers.end(); i++){
 137                 v3s16 p = i->first;
 138                 m_data.erase(p);
 139         }
 140         return elapsed_timers;
 141 }