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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 script_controller.cpp Implementation of ScriptControler. */
#include "../../stdafx.h"
#include "../../string_func.h"
#include "../../script/squirrel.hpp"
#include "../../rev.h"
#include "script_controller.hpp"
#include "script_error.hpp"
#include "../script_fatalerror.hpp"
#include "../script_info.hpp"
#include "../script_instance.hpp"
#include "script_log.hpp"
#include "../../ai/ai_gui.hpp"
#include "../../settings_type.h"
#include "../../network/network.h"
#include "../../safeguards.h"
/* 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, nullptr);
}
/* static */ void ScriptController::Break(const char* message)
{
if (_network_dedicated || !_settings_client.gui.ai_developer_tools) return;
ScriptObject::GetActiveInstance()->Pause();
char log_message[1024];
seprintf(log_message, lastof(log_message), "Break: %s", message);
ScriptLog::Log(ScriptLog::LOG_SQ_ERROR, log_message);
/* Inform script developer that their script has been paused and
* needs manual action to continue. */
ShowAIDebugWindow(ScriptObject::GetRootCompany());
if ((_pause_mode & PM_PAUSED_NORMAL) == PM_UNPAUSED) {
ScriptObject::DoCommand(0, PM_PAUSED_NORMAL, 1, CMD_PAUSE);
}
}
/* 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 (const auto &item : this->loaded_library) {
free(item.second);
free(item.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();
ScriptInfo *lib = ScriptObject::GetActiveInstance()->FindLibrary(library, version);
if (lib == nullptr) {
char error[1024];
seprintf(error, lastof(error), "couldn't find library '%s' with version %d", library, version);
throw sq_throwerror(vm, error);
}
/* Internally we store libraries as 'library.version' */
char library_name[1024];
seprintf(library_name, lastof(library_name), "%s.%d", library, version);
strtolower(library_name);
/* Get the current table/class we belong to */
HSQOBJECT parent;
sq_getstackobj(vm, 1, &parent);
char fake_class[1024];
LoadedLibraryList::iterator it = controller->loaded_library.find(library_name);
if (it != controller->loaded_library.end()) {
strecpy(fake_class, (*it).second, lastof(fake_class));
} else {
int next_number = ++controller->loaded_library_count;
/* Create a new fake internal name */
seprintf(fake_class, lastof(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, fake_class, -1);
sq_newclass(vm, SQFalse);
/* Load the library */
if (!engine->LoadScript(vm, lib->GetMainScript(), false)) {
char error[1024];
seprintf(error, lastof(error), "there was a compile error when importing '%s' version %d", library, version);
throw sq_throwerror(vm, error);
}
/* Create the fake class */
sq_newslot(vm, -3, SQFalse);
sq_pop(vm, 1);
controller->loaded_library[stredup(library_name)] = stredup(fake_class);
}
/* Find the real class inside the fake class (like 'sets.Vector') */
sq_pushroottable(vm);
sq_pushstring(vm, fake_class, -1);
if (SQ_FAILED(sq_get(vm, -2))) {
throw sq_throwerror(vm, "internal error assigning library class");
}
sq_pushstring(vm, lib->GetInstanceName(), -1);
if (SQ_FAILED(sq_get(vm, -2))) {
char error[1024];
seprintf(error, lastof(error), "unable to find class '%s' in the library '%s' version %d", lib->GetInstanceName(), library, version);
throw sq_throwerror(vm, 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, 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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