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(svn r16502) -Fix [FS#2935]: when an AI was suspended while in a function called (indirectly) via call/acall/pcall OpenTTD crashed. Fix this by disallowing AIs to be suspended while called via call/acall/pcall.

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IMPORTANT FOR AI WRITERS: AIs can no longer call any DoCommand functions (change anything, build vehicles, etc.) in a function called (indirectly) via call/acall/pcall. Where possible, please rewrite your code so it doesn't use call/acall/pcall
This commit is contained in:
yexo
2009-06-01 22:00:47 +00:00
parent 85824cf261
commit 62a698df32
6 changed files with 24 additions and 1 deletions
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8
src/ai/api/ai_object.cpp
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@@ -2,6 +2,11 @@
/** @file ai_object.cpp Implementation of AIObject. */
#include "../../stdafx.h"
#include <squirrel.h>
#include "../../script/squirrel.hpp"
#include "../../company_base.h"
#include "ai_log.hpp"
#include "table/strings.h"
#include "../ai.hpp"
@@ -158,7 +163,8 @@ void AIObject::SetAllowDoCommand(bool allow)
bool AIObject::GetAllowDoCommand()
{
return GetStorage()->allow_do_command;
Squirrel *squirrel = Company::Get(_current_company)->ai_instance->engine;
return GetStorage()->allow_do_command && squirrel->CanSuspend();
}
void *&AIObject::GetEventPointer()