ABM2/Engine/Settings.cpp

   1 // CmdLineParser.cpp: implementation of the CSettingsParser class.\r
   2 //\r
   3 //////////////////////////////////////////////////////////////////////\r
   4 \r
   5 #include "engine.h"\r
   6 #include "Settings.h"\r
   7 \r
   8 //////////////////////////////////////////////////////////////////////\r
   9 // Construction/Destruction\r
  10 //////////////////////////////////////////////////////////////////////\r
  11 \r
  12 CSettingsManager::CSettingsManager()\r
  13 {\r
  14         settingMap.clear();\r
  15         CreateStandardSettings();\r
  16 }\r
  17 \r
  18 CSettingsManager::~CSettingsManager()\r
  19 {\r
  20         DestroyStandardSettings();\r
  21 }\r
  22 \r
  23 void CSettingsManager::RegisterVariable(std::string &name, CMMPointer<BaseDator> &var)\r
  24 {\r
  25         settingMap[name]=var;\r
  26 }\r
  27 \r
  28 void CSettingsManager::SetVariable(std::string &name, std::string &value, int bias)\r
  29 {\r
  30         if(!settingMap[name])return; //setting doesn't exist\r
  31         if(settingMap[name]->hasMultipleValues())\r
  32         {\r
  33                 std::list<std::string> valueList;\r
  34                 valueList.clear();\r
  35 \r
  36                 //check for semicolon-seperated values\r
  37                 if(value.find(';')!=-1)\r
  38                 {\r
  39                         //split the string into semicolor-seperated chunks\r
  40                         int first=0, last;\r
  41                         while((last=value.find(';',first))!=-1)\r
  42                         {\r
  43                                 valueList.push_back(value.substr(first,last-first));\r
  44                                 first=last+1;\r
  45                         }\r
  46                         valueList.push_back(value.substr(first));\r
  47                 }else{\r
  48                         valueList.push_back(value);\r
  49                 }\r
  50 \r
  51                 for(std::list<std::string>::iterator it=valueList.begin(); it!=valueList.end(); it++)\r
  52                 {\r
  53                         if(bias>0)\r
  54                         {\r
  55                                 (*settingMap[name])+=(*it);\r
  56                         }else if(bias<0)\r
  57                         {\r
  58                                 (*settingMap[name])-=(*it);\r
  59                         }else{\r
  60                                 (*settingMap[name])=(*it);\r
  61                         }\r
  62                 }\r
  63         }else{\r
  64                 //just assign the value\r
  65                 (*settingMap[name])=value;\r
  66         }\r
  67 }\r
  68 \r
  69 void CSettingsManager::ParseSetting(std::string str)\r
  70 {\r
  71         int bias=0; std::string name, value;\r
  72         //test for bias\r
  73         if((str[0]=='+')||(str[0]=='-'))\r
  74         {\r
  75                 bias=((str[0]=='+')*2)-1; //+ maps to 1*2-1=1, - maps to 0*2-1=-1\r
  76                 str=str.substr(1); //remove the first character from the string\r
  77         }\r
  78         //test for '='\r
  79         int eqPos=str.find('=');\r
  80         if(eqPos!=-1)\r
  81         {\r
  82                 //there's an = sign in there\r
  83                 //so split either side of it\r
  84                 name=str.substr(0,eqPos);\r
  85                 value=str.substr(eqPos+1);\r
  86         }else{\r
  87                 //there's no equal sign\r
  88                 //we use the bias to construct a boolean value\r
  89                 //so that flags can be +flag (mapping to flag=1) or -flag (mapping to flag=0)\r
  90                 name=str;\r
  91                 char szBuf[5];\r
  92                 sprintf_s(szBuf,5,"%i",(bias+1)/2);\r
  93                 value=szBuf;\r
  94         }\r
  95         //set the variable\r
  96         SetVariable(name,value,bias);\r
  97 }\r
  98 \r
  99 void CSettingsManager::ParseFile(std::string filename)\r
 100 {\r
 101         std::ifstream in(filename.c_str());\r
 102         if(!in.is_open())return; //couldn't open\r
 103         while(!in.eof())\r
 104         {\r
 105                 char szBuf[1024];\r
 106                 in.getline(szBuf,1024);\r
 107                 ParseSetting(szBuf);\r
 108         }\r
 109 }\r
 110 \r
 111 #define SETTING(type, target, var, name) target=new Dator<type>(var); RegisterVariable(std::string(name),CMMPointer<BaseDator>(target));\r
 112 #define LIST(type, target, var, name) target=new ListDator<type>(var); RegisterVariable(std::string(name),CMMPointer<BaseDator>(target));\r
 113 \r
 114 void CSettingsManager::CreateStandardSettings()\r
 115 {\r
 116         SETTING(int,    CVideoUpdate::screenWidth,              CVideoUpdate::scrWidth,         "screenX"       );\r
 117         SETTING(int,    CVideoUpdate::screenHeight,             CVideoUpdate::scrHeight,        "screenY"       );\r
 118         SETTING(int,    CVideoUpdate::screenBPP,                CVideoUpdate::scrBPP,           "screenBPP"     );\r
 119 }\r
 120 \r
 121 void CSettingsManager::DestroyStandardSettings()\r
 122 {\r
 123         CVideoUpdate::screenWidth       = 0;\r
 124         CVideoUpdate::screenHeight      = 0;\r
 125         CVideoUpdate::screenBPP         = 0;\r
 126 \r
 127 }\r