# highscore.cpp

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    00001 /* $Id: highscore.cpp 15299 2009-01-31 20:16:06Z smatz $ */
    00002
    00005 #include "highscore.h"
    00006 #include "settings_type.h"
    00007 #include "company_base.h"
    00008 #include "company_func.h"
    00009 #include "cheat_func.h"
    00010 #include "string_func.h"
    00011 #include "strings_func.h"
    00012 #include "table/strings.h"
    00013 #include "core/sort_func.hpp"
    00014 #include "variables.h"
    00015 #include "debug.h"
    00016
    00017 HighScore _highscore_table[5][5]; // 4 difficulty-settings (+ network); top 5
    00018
    00019 static const StringID _endgame_perf_titles[] = {
    00020   STR_0213_BUSINESSMAN,
    00021   STR_0213_BUSINESSMAN,
    00022   STR_0213_BUSINESSMAN,
    00023   STR_0213_BUSINESSMAN,
    00024   STR_0213_BUSINESSMAN,
    00025   STR_0214_ENTREPRENEUR,
    00026   STR_0214_ENTREPRENEUR,
    00027   STR_0215_INDUSTRIALIST,
    00028   STR_0215_INDUSTRIALIST,
    00029   STR_0216_CAPITALIST,
    00030   STR_0216_CAPITALIST,
    00031   STR_0217_MAGNATE,
    00032   STR_0217_MAGNATE,
    00033   STR_0218_MOGUL,
    00034   STR_0218_MOGUL,
    00035   STR_0219_TYCOON_OF_THE_CENTURY
    00036 };
    00037
    00038 StringID EndGameGetPerformanceTitleFromValue(uint value)
    00039 {
    00040   value = minu(value / 64, lengthof(_endgame_perf_titles) - 1);
    00041
    00042   return _endgame_perf_titles[value];
    00043 }
    00044
    00046 int8 SaveHighScoreValue(const Company *c)
    00047 {
    00048   HighScore *hs = _highscore_table[_settings_game.difficulty.diff_level];
    00049   uint i;
    00050   uint16 score = c->old_economy[0].performance_history;
    00051
    00052   /* Exclude cheaters from the honour of being in the highscore table */
    00053   if (CheatHasBeenUsed()) return -1;
    00054
    00055   for (i = 0; i < lengthof(_highscore_table[0]); i++) {
    00056     /* You are in the TOP5. Move all values one down and save us there */
    00057     if (hs[i].score <= score) {
    00058       /* move all elements one down starting from the replaced one */
    00059       memmove(&hs[i + 1], &hs[i], sizeof(HighScore) * (lengthof(_highscore_table[0]) - i - 1));
    00060       SetDParam(0, c->index);
    00061       SetDParam(1, c->index);
    00062       GetString(hs[i].company, STR_HIGHSCORE_NAME, lastof(hs[i].company)); // get manager/company name string
    00063       hs[i].score = score;
    00064       hs[i].title = EndGameGetPerformanceTitleFromValue(score);
    00065       return i;
    00066     }
    00067   }
    00068
    00069   return -1; // too bad; we did not make it into the top5
    00070 }
    00071
    00073 static int CDECL HighScoreSorter(const Company * const *a, const Company * const *b)
    00074 {
    00075   return (*b)->old_economy[0].performance_history - (*a)->old_economy[0].performance_history;
    00076 }
    00077
    00078 /* Save the highscores in a network game when it has ended */
    00079 #define LAST_HS_ITEM lengthof(_highscore_table) - 1
    00080 int8 SaveHighScoreValueNetwork()
    00081 {
    00082   const Company *c;
    00083   const Company *cl[MAX_COMPANIES];
    00084   uint count = 0;
    00085   int8 company = -1;
    00086
    00087   /* Sort all active companies with the highest score first */
    00088   FOR_ALL_COMPANIES(c) cl[count++] = c;
    00089
    00090   QSortT(cl, count, &HighScoreSorter);
    00091
    00092   {
    00093     uint i;
    00094
    00095     memset(_highscore_table[LAST_HS_ITEM], 0, sizeof(_highscore_table[0]));
    00096
    00097     /* Copy over Top5 companies */
    00098     for (i = 0; i < lengthof(_highscore_table[LAST_HS_ITEM]) && i < count; i++) {
    00099       HighScore *hs = &_highscore_table[LAST_HS_ITEM][i];
    00100
    00101       SetDParam(0, cl[i]->index);
    00102       SetDParam(1, cl[i]->index);
    00103       GetString(hs->company, STR_HIGHSCORE_NAME, lastof(hs->company)); // get manager/company name string
    00104       hs->score = cl[i]->old_economy[0].performance_history;
    00105       hs->title = EndGameGetPerformanceTitleFromValue(hs->score);
    00106
    00107       /* get the ranking of the local company */
    00108       if (cl[i]->index == _local_company) company = i;
    00109     }
    00110   }
    00111
    00112   /* Add top5 companys to highscore table */
    00113   return company;
    00114 }
    00115
    00117 void SaveToHighScore()
    00118 {
    00119   FILE *fp = fopen(_highscore_file, "wb");
    00120
    00121   if (fp != NULL) {
    00122     uint i;
    00123     HighScore *hs;
    00124
    00125     for (i = 0; i < LAST_HS_ITEM; i++) { // don't save network highscores
    00126       for (hs = _highscore_table[i]; hs != endof(_highscore_table[i]); hs++) {
    00127         /* First character is a command character, so strlen will fail on that */
    00128         byte length = min(sizeof(hs->company), StrEmpty(hs->company) ? 0 : (int)strlen(&hs->company[1]) + 1);
    00129
    00130         if (fwrite(&length, sizeof(length), 1, fp)       != 1 || // write away string length
    00131             fwrite(hs->company, length, 1, fp)           >  1 || // Yes... could be 0 bytes too
    00132             fwrite(&hs->score, sizeof(hs->score), 1, fp) != 1 ||
    00133             fwrite("  ", 2, 1, fp)                       != 1) { // XXX - placeholder for hs->title, not saved anymore; compatibility
    00134           DEBUG(misc, 1, "Could not save highscore.");
    00135           i = LAST_HS_ITEM;
    00136           break;
    00137         }
    00138       }
    00139     }
    00140     fclose(fp);
    00141   }
    00142 }
    00143
    00145 void LoadFromHighScore()
    00146 {
    00147   FILE *fp = fopen(_highscore_file, "rb");
    00148
    00149   memset(_highscore_table, 0, sizeof(_highscore_table));
    00150
    00151   if (fp != NULL) {
    00152     uint i;
    00153     HighScore *hs;
    00154
    00155     for (i = 0; i < LAST_HS_ITEM; i++) { // don't load network highscores
    00156       for (hs = _highscore_table[i]; hs != endof(_highscore_table[i]); hs++) {
    00157         byte length;
    00158         if (fread(&length, sizeof(length), 1, fp)       !=  1 ||
    00159             fread(hs->company, length, 1, fp)           >   1 || // Yes... could be 0 bytes too
    00160             fread(&hs->score, sizeof(hs->score), 1, fp) !=  1 ||
    00161             fseek(fp, 2, SEEK_CUR)                      == -1) { // XXX - placeholder for hs->title, not saved anymore; compatibility
    00162           DEBUG(misc, 1, "Highscore corrupted");
    00163           i = LAST_HS_ITEM;
    00164           break;
    00165         }
    00166         *lastof(hs->company) = '\0';
    00167         hs->title = EndGameGetPerformanceTitleFromValue(hs->score);
    00168       }
    00169     }
    00170     fclose(fp);
    00171   }
    00172 }