# ai_config.cpp

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    00001 /* $Id: ai_config.cpp 18944 2010-01-29 00:03:31Z yexo $ */
    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 #include "../stdafx.h"
    00013 #include "../openttd.h"
    00014 #include "../settings_type.h"
    00015 #include "../core/random_func.hpp"
    00016 #include "ai.hpp"
    00017 #include "ai_config.hpp"
    00018
    00019 void AIConfig::ChangeAI(const char *name, int version, bool force_exact_match, bool is_random_ai)
    00020 {
    00021   free((void *)this->name);
    00022   this->name = (name == NULL) ? NULL : strdup(name);
    00023   this->info = (name == NULL) ? NULL : AI::FindInfo(this->name, version, force_exact_match);
    00024   this->version = (info == NULL) ? -1 : info->GetVersion();
    00025   this->is_random_ai = is_random_ai;
    00026   if (this->config_list != NULL) delete this->config_list;
    00027   this->config_list = (info == NULL) ? NULL : new AIConfigItemList();
    00028   if (this->config_list != NULL) this->config_list->push_back(_start_date_config);
    00029
    00030   /* The special casing for start_date is here to ensure that the
    00031    *  start_date setting won't change even if you chose another AI. */
    00032   int start_date = this->GetSetting("start_date");
    00033
    00034   for (SettingValueList::iterator it = this->settings.begin(); it != this->settings.end(); it++) {
    00035     free((void*)(*it).first);
    00036   }
    00037   this->settings.clear();
    00038
    00039   this->SetSetting("start_date", start_date);
    00040
    00041   if (_game_mode == GM_NORMAL && this->info != NULL) {
    00042     /* If we're in an existing game and the AI is changed, set all settings
    00043      *  for the AI that have the random flag to a random value. */
    00044     for (AIConfigItemList::const_iterator it = this->info->GetConfigList()->begin(); it != this->info->GetConfigList()->end(); it++) {
    00045       if ((*it).flags & AICONFIG_RANDOM) {
    00046         this->SetSetting((*it).name, InteractiveRandomRange((*it).max_value - (*it).min_value) + (*it).min_value);
    00047       }
    00048     }
    00049     this->AddRandomDeviation();
    00050   }
    00051
    00052 }
    00053
    00054 AIConfig::AIConfig(const AIConfig *config)
    00055 {
    00056   this->name = (config->name == NULL) ? NULL : strdup(config->name);
    00057   this->info = config->info;
    00058   this->version = config->version;
    00059   this->config_list = NULL;
    00060   this->is_random_ai = config->is_random_ai;
    00061
    00062   for (SettingValueList::const_iterator it = config->settings.begin(); it != config->settings.end(); it++) {
    00063     this->settings[strdup((*it).first)] = (*it).second;
    00064   }
    00065   this->AddRandomDeviation();
    00066 }
    00067
    00068 AIConfig::~AIConfig()
    00069 {
    00070   free((void *)this->name);
    00071   this->ResetSettings();
    00072   if (this->config_list != NULL) delete this->config_list;
    00073 }
    00074
    00075 AIInfo *AIConfig::GetInfo() const
    00076 {
    00077   return this->info;
    00078 }
    00079
    00080 bool AIConfig::ResetInfo()
    00081 {
    00082   this->info = AI::FindInfo(this->name, -1, false);
    00083   return this->info != NULL;
    00084 }
    00085
    00086 const AIConfigItemList *AIConfig::GetConfigList()
    00087 {
    00088   if (this->info != NULL) return this->info->GetConfigList();
    00089   if (this->config_list == NULL) {
    00090     this->config_list = new AIConfigItemList();
    00091     this->config_list->push_back(_start_date_config);
    00092   }
    00093   return this->config_list;
    00094 }
    00095
    00096 AIConfig *AIConfig::GetConfig(CompanyID company, bool forceNewgameSetting)
    00097 {
    00098   AIConfig **config;
    00099   if (!forceNewgameSetting) {
    00100     config = (_game_mode == GM_MENU) ? &_settings_newgame.ai_config[company] : &_settings_game.ai_config[company];
    00101   } else {
    00102     config = &_settings_newgame.ai_config[company];
    00103   }
    00104   if (*config == NULL) *config = new AIConfig();
    00105   return *config;
    00106 }
    00107
    00108 int AIConfig::GetSetting(const char *name) const
    00109 {
    00110   SettingValueList::const_iterator it = this->settings.find(name);
    00111   /* Return the default value if the setting is not set, or if we are in a not-custom difficult level */
    00112   if (it == this->settings.end() || ((_game_mode == GM_MENU) ? _settings_newgame.difficulty.diff_level : _settings_game.difficulty.diff_level) != 3) {
    00113     if (this->info == NULL) {
    00114       assert(strcmp("start_date", name) == 0);
    00115       switch ((_game_mode == GM_MENU) ? _settings_newgame.difficulty.diff_level : _settings_game.difficulty.diff_level) {
    00116         case 0: return AI::START_NEXT_EASY;
    00117         case 1: return AI::START_NEXT_MEDIUM;
    00118         case 2: return AI::START_NEXT_HARD;
    00119         case 3: return AI::START_NEXT_MEDIUM;
    00120         default: NOT_REACHED();
    00121       }
    00122     }
    00123     return this->info->GetSettingDefaultValue(name);
    00124   }
    00125   return (*it).second;
    00126 }
    00127
    00128 void AIConfig::SetSetting(const char *name, int value)
    00129 {
    00130   /* You can only set ai specific settings if an AI is selected. */
    00131   if (this->info == NULL && strcmp("start_date", name) != 0) return;
    00132
    00133   if (this->info == NULL && strcmp("start_date", name) == 0) {
    00134     value = Clamp(value, AI::START_NEXT_MIN, AI::START_NEXT_MAX);
    00135   } else {
    00136     const AIConfigItem *config_item = this->info->GetConfigItem(name);
    00137     if (config_item == NULL) return;
    00138
    00139     value = Clamp(value, config_item->min_value, config_item->max_value);
    00140   }
    00141
    00142   SettingValueList::iterator it = this->settings.find(name);
    00143   if (it != this->settings.end()) {
    00144     (*it).second = value;
    00145   } else {
    00146     this->settings[strdup(name)] = value;
    00147   }
    00148 }
    00149
    00150 void AIConfig::ResetSettings()
    00151 {
    00152   for (SettingValueList::iterator it = this->settings.begin(); it != this->settings.end(); it++) {
    00153     free((void*)(*it).first);
    00154   }
    00155   this->settings.clear();
    00156 }
    00157
    00158 void AIConfig::AddRandomDeviation()
    00159 {
    00160   for (AIConfigItemList::const_iterator it = this->GetConfigList()->begin(); it != this->GetConfigList()->end(); it++) {
    00161     if ((*it).random_deviation != 0) {
    00162       this->SetSetting((*it).name, InteractiveRandomRange((*it).random_deviation * 2) - (*it).random_deviation + this->GetSetting((*it).name));
    00163     }
    00164   }
    00165 }
    00166
    00167 bool AIConfig::HasAI() const
    00168 {
    00169   return this->info != NULL;
    00170 }
    00171
    00172 bool AIConfig::IsRandomAI() const
    00173 {
    00174   return this->is_random_ai;
    00175 }
    00176
    00177 const char *AIConfig::GetName() const
    00178 {
    00179   return this->name;
    00180 }
    00181
    00182 int AIConfig::GetVersion() const
    00183 {
    00184   return this->version;
    00185 }
    00186
    00187 void AIConfig::StringToSettings(const char *value)
    00188 {
    00189   char *value_copy = strdup(value);
    00190   char *s = value_copy;
    00191
    00192   while (s != NULL) {
    00193     /* Analyze the string ('name=value,name=value\0') */
    00194     char *item_name = s;
    00195     s = strchr(s, '=');
    00196     if (s == NULL) break;
    00197     if (*s == '\0') break;
    00198     *s = '\0';
    00199     s++;
    00200
    00201     char *item_value = s;
    00202     s = strchr(s, ',');
    00203     if (s != NULL) {
    00204       *s = '\0';
    00205       s++;
    00206     }
    00207
    00208     this->SetSetting(item_name, atoi(item_value));
    00209   }
    00210   free(value_copy);
    00211 }
    00212
    00213 void AIConfig::SettingsToString(char *string, size_t size) const
    00214 {
    00215   string[0] = '\0';
    00216   for (SettingValueList::const_iterator it = this->settings.begin(); it != this->settings.end(); it++) {
    00217     char no[10];
    00218     snprintf(no, sizeof(no), "%d", (*it).second);
    00219
    00220     /* Check if the string would fit in the destination */
    00221     size_t needed_size = strlen((*it).first) + 1 + strlen(no) + 1;
    00222     /* If it doesn't fit, skip the next settings */
    00223     if (size <= needed_size) break;
    00224     size -= needed_size;
    00225
    00226     strcat(string, (*it).first);
    00227     strcat(string, "=");
    00228     strcat(string, no);
    00229     strcat(string, ",");
    00230   }
    00231   /* Remove the last ',', but only if at least one setting was saved. */
    00232   size_t len = strlen(string);
    00233   if (len > 0) string[len - 1] = '\0';
    00234 }