src/triphistory.h

   1 /** @file triphistory.h */
   2
   3 #ifndef TRIPHISTORY_H
   4 #define TRIPHISTORY_H
   5
   6 #include <deque>
   7 #include "window_gui.h"
   8 #include "strings_type.h"
   9 #include "economy_type.h"
  10 #include "date_type.h"
  11
  12 // entries to save
  13 #define TRIP_LENGTH 10
  14
  15 static inline int TripHistoryRound( float x )
  16 {
  17         return int( x > 0.0 ? x + 0.5 : x - 0.5 );
  18 }
  19
  20 struct TripHistoryEntry {
  21         Money profit; // Saved
  22         Date date; // Saved
  23         int32 profit_change; // Calculated
  24         Date TBT; // Calculated
  25         int32 TBT_change; // Calculated
  26
  27         TripHistoryEntry( ) : profit( 0 ), date( 0 ), profit_change( 0 ), TBT( 0 ), TBT_change( 0 ) { };
  28 };
  29
  30 /** Structure to hold data for each vehicle */
  31 struct TripHistory {
  32         // a lot of saveload stuff for std::deque. So...
  33         TripHistoryEntry t[ TRIP_LENGTH ];
  34
  35         Money total_profit;
  36         int32 avg_daylength;
  37         int32 total_change;
  38         Money profit_per_day;
  39
  40         TripHistory( ) :
  41                 total_profit( 0 ),
  42                 avg_daylength( 0 ),
  43                 total_change( 0 ),
  44                 profit_per_day( 0 ) { }
  45
  46         void NewRound();
  47
  48         void AddValue( Money mvalue, Date dvalue );
  49
  50
  51         /**
  52          * Init info for GUI
  53          *
  54          * @return size_t number of valid rows
  55          */
  56         size_t UpdateCalculated( );
  57
  58         int32 FindPercentChange( Money v1, Money v2 ) {
  59                 float temp;
  60
  61                 if ( v1 > v2 ) {
  62                         temp = v1 - v2;
  63                         return TripHistoryRound( ( float ) temp * 100 / ( float ) v1 );
  64                 }
  65
  66                 if ( v2 > v1 ) {
  67                         temp = v1 - v2;
  68                         return TripHistoryRound( ( float ) temp * 100 / ( float ) v2 );
  69                 }
  70
  71                 return 0;
  72         }
  73 };
  74
  75 #endif /* TRIPHISTORY_H */