transparency.h

Go to the documentation of this file.
00001 /* $Id$ */
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 TRANSPARENCY_H
00013 #define TRANSPARENCY_H
00014 
00015 #include "gfx_func.h"
00016 
00022 enum TransparencyOption {
00023   TO_SIGNS = 0,  
00024   TO_TREES,      
00025   TO_HOUSES,     
00026   TO_INDUSTRIES, 
00027   TO_BUILDINGS,  
00028   TO_BRIDGES,    
00029   TO_STRUCTURES, 
00030   TO_CATENARY,   
00031   TO_LOADING,    
00032   TO_END,
00033 };
00034 
00035 typedef uint TransparencyOptionBits; 
00036 extern TransparencyOptionBits _transparency_opt;
00037 extern TransparencyOptionBits _transparency_lock;
00038 extern TransparencyOptionBits _invisibility_opt;
00039 
00046 static inline bool IsTransparencySet(TransparencyOption to)
00047 {
00048   return (HasBit(_transparency_opt, to) && _game_mode != GM_MENU);
00049 }
00050 
00057 static inline bool IsInvisibilitySet(TransparencyOption to)
00058 {
00059   return (HasBit(_transparency_opt & _invisibility_opt, to) && _game_mode != GM_MENU);
00060 }
00061 
00067 static inline void ToggleTransparency(TransparencyOption to)
00068 {
00069   ToggleBit(_transparency_opt, to);
00070 }
00071 
00077 static inline void ToggleInvisibility(TransparencyOption to)
00078 {
00079   ToggleBit(_invisibility_opt, to);
00080 }
00081 
00089 static inline void ToggleInvisibilityWithTransparency(TransparencyOption to)
00090 {
00091   if (IsInvisibilitySet(to)) {
00092     ClrBit(_invisibility_opt, to);
00093     ClrBit(_transparency_opt, to);
00094   } else {
00095     SetBit(_invisibility_opt, to);
00096     SetBit(_transparency_opt, to);
00097   }
00098 }
00099 
00105 static inline void ToggleTransparencyLock(TransparencyOption to)
00106 {
00107   ToggleBit(_transparency_lock, to);
00108 }
00109 
00111 static inline void ResetRestoreAllTransparency()
00112 {
00113   /* if none of the non-locked options are set */
00114   if ((_transparency_opt & ~_transparency_lock) == 0) {
00115     /* set all non-locked options */
00116     _transparency_opt |= GB(~_transparency_lock, 0, TO_END);
00117   } else {
00118     /* clear all non-locked options */
00119     _transparency_opt &= _transparency_lock;
00120   }
00121 
00122   MarkWholeScreenDirty();
00123 }
00124 
00125 #endif /* TRANSPARENCY_H */

Generated on Sat Dec 26 20:06:07 2009 for OpenTTD by  doxygen 1.5.6