OpenTTD: src/highscore.cpp Source File

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highscore.cpp
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1 /* $Id: highscore.cpp 26482 2014-04-23 20:13:33Z rubidium $ */
2
3 /*
4 * This file is part of OpenTTD.
5 * 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.
6 * 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.
7 * 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/>.
8 */
9
12 #include "stdafx.h"
13 #include "highscore.h"
14 #include "company_base.h"
15 #include "company_func.h"
16 #include "cheat_func.h"
17 #include "string_func.h"
18 #include "strings_func.h"
19 #include "table/strings.h"
20 #include "core/sort_func.hpp"
21 #include "debug.h"
22
23 #include "safeguards.h"
24
25 HighScore _highscore_table[SP_HIGHSCORE_END][5];
26 char *_highscore_file;
27
28 static const StringID _endgame_perf_titles[] = {
29 STR_HIGHSCORE_PERFORMANCE_TITLE_BUSINESSMAN,
30 STR_HIGHSCORE_PERFORMANCE_TITLE_BUSINESSMAN,
31 STR_HIGHSCORE_PERFORMANCE_TITLE_BUSINESSMAN,
32 STR_HIGHSCORE_PERFORMANCE_TITLE_BUSINESSMAN,
33 STR_HIGHSCORE_PERFORMANCE_TITLE_BUSINESSMAN,
34 STR_HIGHSCORE_PERFORMANCE_TITLE_ENTREPRENEUR,
35 STR_HIGHSCORE_PERFORMANCE_TITLE_ENTREPRENEUR,
36 STR_HIGHSCORE_PERFORMANCE_TITLE_INDUSTRIALIST,
37 STR_HIGHSCORE_PERFORMANCE_TITLE_INDUSTRIALIST,
38 STR_HIGHSCORE_PERFORMANCE_TITLE_CAPITALIST,
39 STR_HIGHSCORE_PERFORMANCE_TITLE_CAPITALIST,
40 STR_HIGHSCORE_PERFORMANCE_TITLE_MAGNATE,
41 STR_HIGHSCORE_PERFORMANCE_TITLE_MAGNATE,
42 STR_HIGHSCORE_PERFORMANCE_TITLE_MOGUL,
43 STR_HIGHSCORE_PERFORMANCE_TITLE_MOGUL,
44 STR_HIGHSCORE_PERFORMANCE_TITLE_TYCOON_OF_THE_CENTURY
45 };
46
47 StringID EndGameGetPerformanceTitleFromValue(uint value)
48 {
49 value = minu(value / 64, lengthof(_endgame_perf_titles) - 1);
50
51 return _endgame_perf_titles[value];
52 }
53
55 int8 SaveHighScoreValue(const Company *c)
56 {
57 HighScore *hs = _highscore_table[SP_CUSTOM];
58 uint i;
59 uint16 score = c->old_economy[0].performance_history;
60
61 /* Exclude cheaters from the honour of being in the highscore table */
62 if (CheatHasBeenUsed()) return -1;
63
64 for (i = 0; i < lengthof(_highscore_table[0]); i++) {
65 /* You are in the TOP5. Move all values one down and save us there */
66 if (hs[i].score <= score) {
67 /* move all elements one down starting from the replaced one */
68 memmove(&hs[i + 1], &hs[i], sizeof(HighScore) * (lengthof(_highscore_table[0]) - i - 1));
69 SetDParam(0, c->index);
70 SetDParam(1, c->index);
71 GetString(hs[i].company, STR_HIGHSCORE_NAME, lastof(hs[i].company)); // get manager/company name string
72 hs[i].score = score;
73 hs[i].title = EndGameGetPerformanceTitleFromValue(score);
74 return i;
75 }
76 }
77
78 return -1; // too bad; we did not make it into the top5
79 }
80
82 static int CDECL HighScoreSorter(const Company * const *a, const Company * const *b)
83 {
84 return (*b)->old_economy[0].performance_history - (*a)->old_economy[0].performance_history;
85 }
86
91 int8 SaveHighScoreValueNetwork()
92 {
93 const Company *c;
94 const Company *cl[MAX_COMPANIES];
95 uint count = 0;
96 int8 company = -1;
97
98 /* Sort all active companies with the highest score first */
99 FOR_ALL_COMPANIES(c) cl[count++] = c;
100
101 QSortT(cl, count, &HighScoreSorter);
102
103 {
104 uint i;
105
106 memset(_highscore_table[SP_MULTIPLAYER], 0, sizeof(_highscore_table[SP_MULTIPLAYER]));
107
108 /* Copy over Top5 companies */
109 for (i = 0; i < lengthof(_highscore_table[SP_MULTIPLAYER]) && i < count; i++) {
110 HighScore *hs = &_highscore_table[SP_MULTIPLAYER][i];
111
112 SetDParam(0, cl[i]->index);
113 SetDParam(1, cl[i]->index);
114 GetString(hs->company, STR_HIGHSCORE_NAME, lastof(hs->company)); // get manager/company name string
115 hs->score = cl[i]->old_economy[0].performance_history;
116 hs->title = EndGameGetPerformanceTitleFromValue(hs->score);
117
118 /* get the ranking of the local company */
119 if (cl[i]->index == _local_company) company = i;
120 }
121 }
122
123 /* Add top5 companies to highscore table */
124 return company;
125 }
126
128 void SaveToHighScore()
129 {
130 FILE *fp = fopen(_highscore_file, "wb");
131
132 if (fp != NULL) {
133 uint i;
134 HighScore *hs;
135
136 for (i = 0; i < SP_SAVED_HIGHSCORE_END; i++) {
137 for (hs = _highscore_table[i]; hs != endof(_highscore_table[i]); hs++) {
138 /* First character is a command character, so strlen will fail on that */
139 byte length = min(sizeof(hs->company), StrEmpty(hs->company) ? 0 : (int)strlen(&hs->company[1]) + 1);
140
141 if (fwrite(&length, sizeof(length), 1, fp) != 1 || // write away string length
142 fwrite(hs->company, length, 1, fp) > 1 || // Yes... could be 0 bytes too
143 fwrite(&hs->score, sizeof(hs->score), 1, fp) != 1 ||
144 fwrite(" ", 2, 1, fp) != 1) { // XXX - placeholder for hs->title, not saved anymore; compatibility
145 DEBUG(misc, 1, "Could not save highscore.");
146 i = SP_SAVED_HIGHSCORE_END;
147 break;
148 }
149 }
150 }
151 fclose(fp);
152 }
153 }
154
156 void LoadFromHighScore()
157 {
158 FILE *fp = fopen(_highscore_file, "rb");
159
160 memset(_highscore_table, 0, sizeof(_highscore_table));
161
162 if (fp != NULL) {
163 uint i;
164 HighScore *hs;
165
166 for (i = 0; i < SP_SAVED_HIGHSCORE_END; i++) {
167 for (hs = _highscore_table[i]; hs != endof(_highscore_table[i]); hs++) {
168 byte length;
169 if (fread(&length, sizeof(length), 1, fp) != 1 ||
170 fread(hs->company, min<int>(lengthof(hs->company), length), 1, fp) > 1 || // Yes... could be 0 bytes too
171 fread(&hs->score, sizeof(hs->score), 1, fp) != 1 ||
172 fseek(fp, 2, SEEK_CUR) == -1) { // XXX - placeholder for hs->title, not saved anymore; compatibility
173 DEBUG(misc, 1, "Highscore corrupted");
174 i = SP_SAVED_HIGHSCORE_END;
175 break;
176 }
177 str_validate(hs->company, lastof(hs->company), SVS_NONE);
178 hs->title = EndGameGetPerformanceTitleFromValue(hs->score);
179 }
180 }
181 fclose(fp);
182 }
183 }