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/* $Id$ */
/*
* 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 script_controller.cpp Implementation of AIControler. */
#include "../../stdafx.h"
#include "../../string_func.h"
#include "../../script/squirrel.hpp"
#include "../../rev.h"
#include "script_controller.hpp"
#include "../script_fatalerror.hpp"
#include "../script_info.hpp"
#include "../script_instance.hpp"
#include "../script_suspend.hpp"
#include "script_log.hpp"
/* static */ void ScriptController::SetCommandDelay(int ticks)
{
if (ticks <= 0) return;
ScriptObject::SetDoCommandDelay(ticks);
}
/* static */ void ScriptController::Sleep(int ticks)
{
if (!ScriptObject::CanSuspend()) {
throw Script_FatalError("You are not allowed to call Sleep in your constructor, Save(), Load(), and any valuator.");
}
if (ticks <= 0) {
ScriptLog::Warning("Sleep() value should be > 0. Assuming value 1.");
ticks = 1;
}
throw Script_Suspend(ticks, NULL);
}
/* static */ void ScriptController::Print(bool error_msg, const char *message)
{
ScriptLog::Log(error_msg ? ScriptLog::LOG_SQ_ERROR : ScriptLog::LOG_SQ_INFO, message);
}
ScriptController::ScriptController(CompanyID company) :
ticks(0),
loaded_library_count(0)
{
ScriptObject::SetCompany(company);
}
ScriptController::~ScriptController()
{
for (LoadedLibraryList::iterator iter = this->loaded_library.begin(); iter != this->loaded_library.end(); iter++) {
free((*iter).second);
free((*iter).first);
}
this->loaded_library.clear();
}
/* static */ uint ScriptController::GetTick()
{
return ScriptObject::GetActiveInstance()->GetController()->ticks;
}
/* static */ int ScriptController::GetOpsTillSuspend()
{
return ScriptObject::GetActiveInstance()->GetOpsTillSuspend();
}
/* static */ int ScriptController::GetSetting(const char *name)
{
return ScriptObject::GetActiveInstance()->GetSetting(name);
}
/* static */ uint ScriptController::GetVersion()
{
return _openttd_newgrf_version;
}
/* static */ HSQOBJECT ScriptController::Import(const char *library, const char *class_name, int version)
{
ScriptController *controller = ScriptObject::GetActiveInstance()->GetController();
Squirrel *engine = ScriptObject::GetActiveInstance()->engine;
HSQUIRRELVM vm = engine->GetVM();
/* Internally we store libraries as 'library.version' */
char library_name[1024];
snprintf(library_name, sizeof(library_name), "%s.%d", library, version);
strtolower(library_name);
ScriptInfo *lib = ScriptObject::GetActiveInstance()->FindLibrary(library, version);
if (lib == NULL) {
char error[1024];
snprintf(error, sizeof(error), "couldn't find library '%s' with version %d", library, version);
throw sq_throwerror(vm, OTTD2SQ(error));
}
/* Get the current table/class we belong to */
HSQOBJECT parent;
sq_getstackobj(vm, 1, &parent);
char fake_class[1024];
LoadedLibraryList::iterator iter = controller->loaded_library.find(library_name);
if (iter != controller->loaded_library.end()) {
ttd_strlcpy(fake_class, (*iter).second, sizeof(fake_class));
} else {
int next_number = ++controller->loaded_library_count;
/* Create a new fake internal name */
snprintf(fake_class, sizeof(fake_class), "_internalNA%d", next_number);
/* Load the library in a 'fake' namespace, so we can link it to the name the user requested */
sq_pushroottable(vm);
sq_pushstring(vm, OTTD2SQ(fake_class), -1);
sq_newclass(vm, SQFalse);
/* Load the library */
if (!engine->LoadScript(vm, lib->GetMainScript(), false)) {
char error[1024];
snprintf(error, sizeof(error), "there was a compile error when importing '%s' version %d", library, version);
throw sq_throwerror(vm, OTTD2SQ(error));
}
/* Create the fake class */
sq_newslot(vm, -3, SQFalse);
sq_pop(vm, 1);
controller->loaded_library[strdup(library_name)] = strdup(fake_class);
}
/* Find the real class inside the fake class (like 'sets.Vector') */
sq_pushroottable(vm);
sq_pushstring(vm, OTTD2SQ(fake_class), -1);
if (SQ_FAILED(sq_get(vm, -2))) {
throw sq_throwerror(vm, _SC("internal error assigning library class"));
}
sq_pushstring(vm, OTTD2SQ(lib->GetInstanceName()), -1);
if (SQ_FAILED(sq_get(vm, -2))) {
char error[1024];
snprintf(error, sizeof(error), "unable to find class '%s' in the library '%s' version %d", lib->GetInstanceName(), library, version);
throw sq_throwerror(vm, OTTD2SQ(error));
}
HSQOBJECT obj;
sq_getstackobj(vm, -1, &obj);
sq_pop(vm, 3);
if (StrEmpty(class_name)) return obj;
/* Now link the name the user wanted to our 'fake' class */
sq_pushobject(vm, parent);
sq_pushstring(vm, OTTD2SQ(class_name), -1);
sq_pushobject(vm, obj);
sq_newclass(vm, SQTrue);
sq_newslot(vm, -3, SQFalse);
sq_pop(vm, 1);
return obj;
}
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