src/script/api/script_execmode.cpp

   1 /*
   2  * This file is part of OpenTTD.
   3  * 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.
   4  * 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.
   5  * 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/>.
   6  */
   7
   8 /** @file script_execmode.cpp Implementation of ScriptExecMode. */
   9
  10 #include "../../stdafx.h"
  11 #include "script_execmode.hpp"
  12 #include "../script_instance.hpp"
  13 #include "../script_fatalerror.hpp"
  14
  15 #include "../../safeguards.h"
  16
  17 bool ScriptExecMode::ModeProc()
  18 {
  19         /* In execution mode we only return 'true', telling the DoCommand it
  20          *  should continue with the real execution of the command. */
  21         return true;
  22 }
  23
  24 ScriptExecMode::ScriptExecMode()
  25 {
  26         this->last_mode     = this->GetDoCommandMode();
  27         this->last_instance = this->GetDoCommandModeInstance();
  28         this->SetDoCommandMode(&ScriptExecMode::ModeProc, this);
  29 }
  30
  31 void ScriptExecMode::FinalRelease()
  32 {
  33         if (this->GetDoCommandModeInstance() != this) {
  34                 /* Ignore this error if the script is not alive. */
  35                 if (ScriptObject::GetActiveInstance()->IsAlive()) {
  36                         throw Script_FatalError("ScriptExecMode object was removed while it was not the latest *Mode object created.");
  37                 }
  38         }
  39 }
  40
  41 ScriptExecMode::~ScriptExecMode()
  42 {
  43         this->SetDoCommandMode(this->last_mode, this->last_instance);
  44 }