settings_internal.h

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00001 /* $Id: settings_internal.h 23735 2012-01-03 20:26:05Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD 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.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #ifndef SETTINGS_INTERNAL_H
00013 #define SETTINGS_INTERNAL_H
00014 
00015 #include "saveload/saveload.h"
00016 
00023 enum SettingDescTypeLong {
00024   /* 4 bytes allocated a maximum of 16 types for GenericType */
00025   SDT_BEGIN       = 0,
00026   SDT_NUMX        = 0, 
00027   SDT_BOOLX       = 1, 
00028   SDT_ONEOFMANY   = 2, 
00029   SDT_MANYOFMANY  = 3, 
00030   SDT_INTLIST     = 4, 
00031   SDT_STRING      = 5, 
00032   SDT_END,
00033   /* 10 more possible primitives */
00034 };
00035 typedef SimpleTinyEnumT<SettingDescTypeLong, byte> SettingDescType;
00036 
00037 
00038 enum SettingGuiFlagLong {
00039   /* 1 byte allocated for a maximum of 8 flags
00040    * Flags directing saving/loading of a variable */
00041   SGF_NONE = 0,
00042   SGF_0ISDISABLED  = 1 << 0, 
00043   SGF_NOCOMMA      = 1 << 1, 
00044   SGF_MULTISTRING  = 1 << 2, 
00045   SGF_NETWORK_ONLY = 1 << 3, 
00046   SGF_CURRENCY     = 1 << 4, 
00047   SGF_NO_NETWORK   = 1 << 5, 
00048   SGF_NEWGAME_ONLY = 1 << 6, 
00049   SGF_SCENEDIT_TOO = 1 << 7, 
00050   SGF_PER_COMPANY  = 1 << 8, 
00051 };
00052 DECLARE_ENUM_AS_BIT_SET(SettingGuiFlagLong)
00053 typedef SimpleTinyEnumT<SettingGuiFlagLong, uint16> SettingGuiFlag;
00054 
00055 
00056 typedef bool OnChange(int32 var);           
00057 typedef size_t OnConvert(const char *value); 
00058 
00060 struct SettingDescBase {
00061   const char *name;       
00062   const void *def;        
00063   SettingDescType cmd;    
00064   SettingGuiFlag flags;   
00065   int32 min;              
00066   uint32 max;             
00067   int32 interval;         
00068   const char *many;       
00069   StringID str;           
00070   StringID val_str;       
00071   OnChange *proc;         
00072   OnConvert *proc_cnvt;   
00073 };
00074 
00075 struct SettingDesc {
00076   SettingDescBase desc;   
00077   SaveLoad save;          
00078 };
00079 
00080 /* NOTE: The only difference between SettingDesc and SettingDescGlob is
00081  * that one uses global variables as a source and the other offsets
00082  * in a struct which are bound to a certain variable during runtime.
00083  * The only way to differentiate between these two is to check if an object
00084  * has been passed to the function or not. If not, then it is a global variable
00085  * and save->variable has its address, otherwise save->variable only holds the
00086  * offset in a certain struct */
00087 typedef SettingDesc SettingDescGlobVarList;
00088 
00089 const SettingDesc *GetSettingFromName(const char *name, uint *i);
00090 bool SetSettingValue(uint index, int32 value, bool force_newgame = false);
00091 bool SetSettingValue(uint index, const char *value, bool force_newgame = false);
00092 void SetCompanySetting(uint index, int32 value);
00093 
00094 #endif /* SETTINGS_INTERNAL_H */