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/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file ai_scanner.cpp allows scanning AI scripts */
#include "../stdafx.h"
#include "../debug.h"
#include "../network/network.h"
#include "../core/random_func.hpp"
#include "../script/squirrel_class.hpp"
#include "ai_info.hpp"
#include "ai_scanner.hpp"
#include "../safeguards.h"
AIScannerInfo::AIScannerInfo() :
ScriptScanner(),
info_dummy(nullptr)
{
}
void AIScannerInfo::Initialize()
{
ScriptScanner::Initialize("AIScanner");
ScriptAllocatorScope alloc_scope(this->engine);
/* Create the dummy AI */
free(this->main_script);
this->main_script = stredup("%_dummy");
extern void Script_CreateDummyInfo(HSQUIRRELVM vm, const char *type, const char *dir);
Script_CreateDummyInfo(this->engine->GetVM(), "AI", "ai");
}
void AIScannerInfo::SetDummyAI(class AIInfo *info)
{
this->info_dummy = info;
}
AIScannerInfo::~AIScannerInfo()
{
delete this->info_dummy;
}
void AIScannerInfo::GetScriptName(ScriptInfo *info, char *name, const char *last)
{
seprintf(name, last, "%s", info->GetName());
}
void AIScannerInfo::RegisterAPI(class Squirrel *engine)
{
AIInfo::RegisterAPI(engine);
}
AIInfo *AIScannerInfo::SelectRandomAI() const
{
uint num_random_ais = 0;
for (ScriptInfoList::const_iterator it = this->info_single_list.begin(); it != this->info_single_list.end(); it++) {
AIInfo *i = static_cast<AIInfo *>((*it).second);
if (i->UseAsRandomAI()) num_random_ais++;
}
if (num_random_ais == 0) {
DEBUG(script, 0, "No suitable AI found, loading 'dummy' AI.");
return this->info_dummy;
}
/* Find a random AI */
uint pos;
if (_networking) {
pos = InteractiveRandomRange(num_random_ais);
} else {
pos = RandomRange(num_random_ais);
}
/* Find the Nth item from the array */
ScriptInfoList::const_iterator it = this->info_single_list.begin();
#define GetAIInfo(it) static_cast<AIInfo *>((*it).second)
while (!GetAIInfo(it)->UseAsRandomAI()) it++;
for (; pos > 0; pos--) {
it++;
while (!GetAIInfo(it)->UseAsRandomAI()) it++;
}
return GetAIInfo(it);
#undef GetAIInfo
}
AIInfo *AIScannerInfo::FindInfo(const char *nameParam, int versionParam, bool force_exact_match)
{
if (this->info_list.size() == 0) return nullptr;
if (nameParam == nullptr) return nullptr;
char ai_name[1024];
strecpy(ai_name, nameParam, lastof(ai_name));
strtolower(ai_name);
AIInfo *info = nullptr;
int version = -1;
if (versionParam == -1) {
/* We want to load the latest version of this AI; so find it */
if (this->info_single_list.find(ai_name) != this->info_single_list.end()) return static_cast<AIInfo *>(this->info_single_list[ai_name]);
/* If we didn't find a match AI, maybe the user included a version */
char *e = strrchr(ai_name, '.');
if (e == nullptr) return nullptr;
*e = '\0';
e++;
versionParam = atoi(e);
/* Continue, like we were calling this function with a version. */
}
if (force_exact_match) {
/* Try to find a direct 'name.version' match */
char ai_name_tmp[1024];
seprintf(ai_name_tmp, lastof(ai_name_tmp), "%s.%d", ai_name, versionParam);
strtolower(ai_name_tmp);
if (this->info_list.find(ai_name_tmp) != this->info_list.end()) return static_cast<AIInfo *>(this->info_list[ai_name_tmp]);
}
/* See if there is a compatible AI which goes by that name, with the highest
* version which allows loading the requested version */
ScriptInfoList::iterator it = this->info_list.begin();
for (; it != this->info_list.end(); it++) {
AIInfo *i = static_cast<AIInfo *>((*it).second);
if (strcasecmp(ai_name, i->GetName()) == 0 && i->CanLoadFromVersion(versionParam) && (version == -1 || i->GetVersion() > version)) {
version = (*it).second->GetVersion();
info = i;
}
}
return info;
}
void AIScannerLibrary::Initialize()
{
ScriptScanner::Initialize("AIScanner");
}
void AIScannerLibrary::GetScriptName(ScriptInfo *info, char *name, const char *last)
{
AILibrary *library = static_cast<AILibrary *>(info);
seprintf(name, last, "%s.%s", library->GetCategory(), library->GetInstanceName());
}
void AIScannerLibrary::RegisterAPI(class Squirrel *engine)
{
AILibrary::RegisterAPI(engine);
}
AILibrary *AIScannerLibrary::FindLibrary(const char *library, int version)
{
/* Internally we store libraries as 'library.version' */
char library_name[1024];
seprintf(library_name, lastof(library_name), "%s.%d", library, version);
strtolower(library_name);
/* Check if the library + version exists */
ScriptInfoList::iterator iter = this->info_list.find(library_name);
if (iter == this->info_list.end()) return nullptr;
return static_cast<AILibrary *>((*iter).second);
}
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