5 files changed, 46 insertions, 4 deletions
diff --git a/src/script/api/script_controller.cpp b/src/script/api/script_controller.cpp
index 163335f3d..bc6d060fd 100644
--- a/src/script/api/script_controller.cpp
+++ b/src/script/api/script_controller.cpp
@@ -20,6 +20,7 @@
 #include "../../ai/ai_instance.hpp"
 #include "../../ai/ai_config.hpp"
 #include "../../ai/ai.hpp"
+#include "../script_fatalerror.hpp"
 #include "script_log.hpp"
 
 /* static */ void ScriptController::SetCommandDelay(int ticks)
@@ -31,7 +32,7 @@
 /* static */ void ScriptController::Sleep(int ticks)
 {
 	if (!ScriptObject::CanSuspend()) {
-		throw AI_FatalError("You are not allowed to call Sleep in your constructor, Save(), Load(), and any valuator.");
+		throw Script_FatalError("You are not allowed to call Sleep in your constructor, Save(), Load(), and any valuator.");
 	}
 
 	if (ticks <= 0) {
diff --git a/src/script/api/script_execmode.cpp b/src/script/api/script_execmode.cpp
index 23f4c683d..e0481b25b 100644
--- a/src/script/api/script_execmode.cpp
+++ b/src/script/api/script_execmode.cpp
@@ -14,6 +14,7 @@
 #include "../../company_base.h"
 #include "../../company_func.h"
 #include "../../ai/ai_instance.hpp"
+#include "../script_fatalerror.hpp"
 
 bool ScriptExecMode::ModeProc()
 {
@@ -34,7 +35,7 @@ ScriptExecMode::~ScriptExecMode()
 	if (this->GetDoCommandModeInstance() != this) {
 		/* Ignore this error if the AI already died. */
 		if (!ScriptObject::GetActiveInstance()->IsDead()) {
-			throw AI_FatalError("ScriptExecMode object was removed while it was not the latest AI*Mode object created.");
+			throw Script_FatalError("ScriptExecMode object was removed while it was not the latest AI*Mode object created.");
 		}
 	}
 	this->SetDoCommandMode(this->last_mode, this->last_instance);
diff --git a/src/script/api/script_object.cpp b/src/script/api/script_object.cpp
index 0be85a745..cb01d3ee3 100644
--- a/src/script/api/script_object.cpp
+++ b/src/script/api/script_object.cpp
@@ -17,6 +17,7 @@
 
 #include "../script_storage.hpp"
 #include "../../ai/ai_instance.hpp"
+#include "../script_fatalerror.hpp"
 #include "script_error.hpp"
 
 /**
@@ -226,7 +227,7 @@ ScriptObject::ActiveInstance::~ActiveInstance()
 /* static */ bool ScriptObject::DoCommand(TileIndex tile, uint32 p1, uint32 p2, uint cmd, const char *text, AISuspendCallbackProc *callback)
 {
 	if (!ScriptObject::CanSuspend()) {
-		throw AI_FatalError("You are not allowed to execute any DoCommand (even indirect) in your constructor, Save(), Load(), and any valuator.");
+		throw Script_FatalError("You are not allowed to execute any DoCommand (even indirect) in your constructor, Save(), Load(), and any valuator.");
 	}
 
 	/* Set the default callback to return a true/false result of the DoCommand */
diff --git a/src/script/api/script_testmode.cpp b/src/script/api/script_testmode.cpp
index 87b4aea57..184a8795c 100644
--- a/src/script/api/script_testmode.cpp
+++ b/src/script/api/script_testmode.cpp
@@ -14,6 +14,7 @@
 #include "../../company_base.h"
 #include "../../company_func.h"
 #include "../../ai/ai_instance.hpp"
+#include "../script_fatalerror.hpp"
 
 bool ScriptTestMode::ModeProc()
 {
@@ -34,7 +35,7 @@ ScriptTestMode::~ScriptTestMode()
 	if (this->GetDoCommandModeInstance() != this) {
 		/* Ignore this error if the AI already died. */
 		if (!ScriptObject::GetActiveInstance()->IsDead()) {
-			throw AI_FatalError("AITestmode object was removed while it was not the latest AI*Mode object created.");
+			throw Script_FatalError("AITestmode object was removed while it was not the latest AI*Mode object created.");
 		}
 	}
 	this->SetDoCommandMode(this->last_mode, this->last_instance);
diff --git a/src/script/script_fatalerror.hpp b/src/script/script_fatalerror.hpp
new file mode 100644
index 000000000..fc7e05402
--- /dev/null
+++ b/src/script/script_fatalerror.hpp
@@ -0,0 +1,38 @@
+/* $Id$ */
+
+/*
+ * 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_fatalerror.hpp The definition of Script_FatalError. */
+
+#ifndef SCRIPT_FATALERROR_HPP
+#define SCRIPT_FATALERROR_HPP
+
+/**
+ * A throw-class that is given when the script made a fatal error.
+ */
+class Script_FatalError {
+public:
+	/**
+	 * Creates a "fatal error" exception.
+	 * @param msg The message describing the cause of the fatal error.
+	 */
+	Script_FatalError(const char *msg) :
+		msg(msg)
+	{}
+
+	/**
+	 * The error message associated with the fatal error.
+	 * @return The error message.
+	 */
+	const char *GetErrorMessage() { return msg; }
+
+private:
+	const char *msg; ///< The error message.
+};
+
+#endif /* SCRIPT_FATALERROR_HPP */