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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 game_info.cpp Implementation of GameInfo */
#include "../stdafx.h"
#include "../script/squirrel_class.hpp"
#include "game_info.hpp"
#include "game_scanner.hpp"
#include "../debug.h"
#include <set>
#include "../safeguards.h"
/**
* Check if the API version provided by the Game is supported.
* @param api_version The API version as provided by the Game.
*/
static bool CheckAPIVersion(const char *api_version)
{
static const std::set<std::string> versions = { "1.2", "1.3", "1.4", "1.5", "1.6", "1.7", "1.8", "1.9", "1.10", "1.11", "1.12" };
return versions.find(api_version) != versions.end();
}
#if defined(_WIN32)
#undef GetClassName
#endif /* _WIN32 */
template <> const char *GetClassName<GameInfo, ST_GS>() { return "GSInfo"; }
/* static */ void GameInfo::RegisterAPI(Squirrel *engine)
{
/* Create the GSInfo class, and add the RegisterGS function */
DefSQClass<GameInfo, ST_GS> SQGSInfo("GSInfo");
SQGSInfo.PreRegister(engine);
SQGSInfo.AddConstructor<void (GameInfo::*)(), 1>(engine, "x");
SQGSInfo.DefSQAdvancedMethod(engine, &GameInfo::AddSetting, "AddSetting");
SQGSInfo.DefSQAdvancedMethod(engine, &GameInfo::AddLabels, "AddLabels");
SQGSInfo.DefSQConst(engine, SCRIPTCONFIG_NONE, "CONFIG_NONE");
SQGSInfo.DefSQConst(engine, SCRIPTCONFIG_RANDOM, "CONFIG_RANDOM");
SQGSInfo.DefSQConst(engine, SCRIPTCONFIG_BOOLEAN, "CONFIG_BOOLEAN");
SQGSInfo.DefSQConst(engine, SCRIPTCONFIG_INGAME, "CONFIG_INGAME");
SQGSInfo.DefSQConst(engine, SCRIPTCONFIG_DEVELOPER, "CONFIG_DEVELOPER");
SQGSInfo.PostRegister(engine);
engine->AddMethod("RegisterGS", &GameInfo::Constructor, 2, "tx");
}
/* static */ SQInteger GameInfo::Constructor(HSQUIRRELVM vm)
{
/* Get the GameInfo */
SQUserPointer instance = nullptr;
if (SQ_FAILED(sq_getinstanceup(vm, 2, &instance, 0)) || instance == nullptr) return sq_throwerror(vm, "Pass an instance of a child class of GameInfo to RegisterGame");
GameInfo *info = (GameInfo *)instance;
SQInteger res = ScriptInfo::Constructor(vm, info);
if (res != 0) return res;
if (info->engine->MethodExists(*info->SQ_instance, "MinVersionToLoad")) {
if (!info->engine->CallIntegerMethod(*info->SQ_instance, "MinVersionToLoad", &info->min_loadable_version, MAX_GET_OPS)) return SQ_ERROR;
} else {
info->min_loadable_version = info->GetVersion();
}
/* When there is an IsSelectable function, call it. */
if (info->engine->MethodExists(*info->SQ_instance, "IsDeveloperOnly")) {
if (!info->engine->CallBoolMethod(*info->SQ_instance, "IsDeveloperOnly", &info->is_developer_only, MAX_GET_OPS)) return SQ_ERROR;
} else {
info->is_developer_only = false;
}
/* Try to get the API version the AI is written for. */
if (!info->CheckMethod("GetAPIVersion")) return SQ_ERROR;
if (!info->engine->CallStringMethodStrdup(*info->SQ_instance, "GetAPIVersion", &info->api_version, MAX_GET_OPS)) return SQ_ERROR;
if (!CheckAPIVersion(info->api_version)) {
DEBUG(script, 1, "Loading info.nut from (%s.%d): GetAPIVersion returned invalid version", info->GetName(), info->GetVersion());
return SQ_ERROR;
}
/* Remove the link to the real instance, else it might get deleted by RegisterGame() */
sq_setinstanceup(vm, 2, nullptr);
/* Register the Game to the base system */
info->GetScanner()->RegisterScript(info);
return 0;
}
GameInfo::GameInfo() :
min_loadable_version(0),
is_developer_only(false),
api_version(nullptr)
{
}
GameInfo::~GameInfo()
{
free(this->api_version);
}
bool GameInfo::CanLoadFromVersion(int version) const
{
if (version == -1) return true;
return version >= this->min_loadable_version && version <= this->GetVersion();
}
GameLibrary::~GameLibrary()
{
free(this->category);
}
/* static */ void GameLibrary::RegisterAPI(Squirrel *engine)
{
/* Create the GameLibrary class, and add the RegisterLibrary function */
engine->AddClassBegin("GSLibrary");
engine->AddClassEnd();
engine->AddMethod("RegisterLibrary", &GameLibrary::Constructor, 2, "tx");
}
/* static */ SQInteger GameLibrary::Constructor(HSQUIRRELVM vm)
{
/* Create a new library */
GameLibrary *library = new GameLibrary();
SQInteger res = ScriptInfo::Constructor(vm, library);
if (res != 0) {
delete library;
return res;
}
/* Cache the category */
if (!library->CheckMethod("GetCategory") || !library->engine->CallStringMethodStrdup(*library->SQ_instance, "GetCategory", &library->category, MAX_GET_OPS)) {
delete library;
return SQ_ERROR;
}
/* Register the Library to the base system */
library->GetScanner()->RegisterScript(library);
return 0;
}
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