src/quicktune.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2013 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 Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser 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 "quicktune.h"
  21 #include <jmutex.h>
  22 #include <jmutexautolock.h>
  23 #include "util/string.h"
  24
  25 std::string QuicktuneValue::getString()
  26 {
  27         switch(type){
  28         case QVT_NONE:
  29                 return "(none)";
  30         case QVT_FLOAT:
  31                 return ftos(value_QVT_FLOAT.current);
  32         }
  33         return "<invalid type>";
  34 }
  35 void QuicktuneValue::relativeAdd(float amount)
  36 {
  37         switch(type){
  38         case QVT_NONE:
  39                 break;
  40         case QVT_FLOAT:
  41                 value_QVT_FLOAT.current += amount * (value_QVT_FLOAT.max - value_QVT_FLOAT.min);
  42                 if(value_QVT_FLOAT.current > value_QVT_FLOAT.max)
  43                         value_QVT_FLOAT.current = value_QVT_FLOAT.max;
  44                 if(value_QVT_FLOAT.current < value_QVT_FLOAT.min)
  45                         value_QVT_FLOAT.current = value_QVT_FLOAT.min;
  46                 break;
  47         }
  48 }
  49
  50 static std::map<std::string, QuicktuneValue> g_values;
  51 static std::vector<std::string> g_names;
  52 JMutex *g_mutex = NULL;
  53
  54 static void makeMutex()
  55 {
  56         if(!g_mutex){
  57                 g_mutex = new JMutex();
  58                 g_mutex->Init();
  59         }
  60 }
  61
  62 std::vector<std::string> getQuicktuneNames()
  63 {
  64         return g_names;
  65 }
  66
  67 QuicktuneValue getQuicktuneValue(const std::string &name)
  68 {
  69         makeMutex();
  70         JMutexAutoLock lock(*g_mutex);
  71         std::map<std::string, QuicktuneValue>::iterator i = g_values.find(name);
  72         if(i == g_values.end()){
  73                 QuicktuneValue val;
  74                 val.type = QVT_NONE;
  75                 return val;
  76         }
  77         return i->second;
  78 }
  79
  80 void setQuicktuneValue(const std::string &name, const QuicktuneValue &val)
  81 {
  82         makeMutex();
  83         JMutexAutoLock lock(*g_mutex);
  84         g_values[name] = val;
  85         g_values[name].modified = true;
  86 }
  87
  88 void updateQuicktuneValue(const std::string &name, QuicktuneValue &val)
  89 {
  90         makeMutex();
  91         JMutexAutoLock lock(*g_mutex);
  92         std::map<std::string, QuicktuneValue>::iterator i = g_values.find(name);
  93         if(i == g_values.end()){
  94                 g_values[name] = val;
  95                 g_names.push_back(name);
  96                 return;
  97         }
  98         QuicktuneValue &ref = i->second;
  99         if(ref.modified)
 100                 val = ref;
 101         else{
 102                 ref = val;
 103                 ref.modified = false;
 104         }
 105 }
 106