3 files changed, 51 insertions, 10 deletions

diff --git a/src/Bindings/LuaState.cpp b/src/Bindings/LuaState.cpp
index 00e62fcf6..bfee1d037 100644
--- a/src/Bindings/LuaState.cpp
+++ b/src/Bindings/LuaState.cpp
@@ -914,6 +914,40 @@ bool cLuaState::CheckParamString(int a_StartParam, int a_EndParam)
 
 
 
+bool cLuaState::CheckParamFunction(int a_StartParam, int a_EndParam)
+{
+	ASSERT(IsValid());
+	
+	if (a_EndParam < 0)
+	{
+		a_EndParam = a_StartParam;
+	}
+	
+	for (int i = a_StartParam; i <= a_EndParam; i++)
+	{
+		if (lua_isfunction(m_LuaState, i))
+		{
+			continue;
+		}
+		// Not the correct parameter
+		lua_Debug entry;
+		VERIFY(lua_getstack(m_LuaState, 0,   &entry));
+		VERIFY(lua_getinfo (m_LuaState, "n", &entry));
+		AString ErrMsg = Printf("Error in function '%s' parameter #%d. Function expected, got %s",
+			(entry.name != NULL) ? entry.name : "?", i, GetTypeText(i).c_str()
+		);
+		LogStackTrace();
+		return false;
+	}  // for i - Param
+	
+	// All params checked ok
+	return true;
+}
+
+
+
+
+
 bool cLuaState::CheckParamEnd(int a_Param)
 {
 	tolua_Error tolua_err;
diff --git a/src/Bindings/LuaState.h b/src/Bindings/LuaState.h
index 414e5e4b2..f8b67f5cd 100644
--- a/src/Bindings/LuaState.h
+++ b/src/Bindings/LuaState.h
@@ -815,6 +815,9 @@ public:
 	/// Returns true if the specified parameters on the stack are strings; also logs warning if not
 	bool CheckParamString(int a_StartParam, int a_EndParam = -1);
 	
+	/// Returns true if the specified parameters on the stack are functions; also logs warning if not
+	bool CheckParamFunction(int a_StartParam, int a_EndParam = -1);
+	
 	/// Returns true if the specified parameter on the stack is nil (indicating an end-of-parameters)
 	bool CheckParamEnd(int a_Param);
 	
diff --git a/src/Bindings/ManualBindings.cpp b/src/Bindings/ManualBindings.cpp
index 3ebe7b294..2206dd371 100644
--- a/src/Bindings/ManualBindings.cpp
+++ b/src/Bindings/ManualBindings.cpp
@@ -986,11 +986,10 @@ static int tolua_cWorld_QueueTask(lua_State * tolua_S)
 
 
 class cLuaScheduledWorldTask :
-	public cWorld::cScheduledTask
+	public cWorld::cTask
 {
 public:
-	cLuaScheduledWorldTask(cPluginLua & a_Plugin, int a_FnRef, int a_Ticks) :
-		cScheduledTask(a_Ticks),
+	cLuaScheduledWorldTask(cPluginLua & a_Plugin, int a_FnRef) :
 		m_Plugin(a_Plugin),
 		m_FnRef(a_FnRef)
 	{
@@ -1025,14 +1024,19 @@ static int tolua_cWorld_ScheduleTask(lua_State * tolua_S)
 	}
 
 	// Retrieve the args:
-	cWorld * self = (cWorld *)tolua_tousertype(tolua_S, 1, 0);
-	if (self == NULL)
+	cLuaState L(tolua_S);
+	if (
+		!L.CheckParamUserType(1, "cWorld") ||
+		!L.CheckParamNumber  (2) ||
+		!L.CheckParamFunction(3)
+	)
 	{
-		return lua_do_error(tolua_S, "Error in function call '#funcname#': Not called on an object instance");
+		return 0;
 	}
-	if (!lua_isfunction(tolua_S, 2))
+	cWorld * World = (cWorld *)tolua_tousertype(tolua_S, 1, NULL);
+	if (World == NULL)
 	{
-		return lua_do_error(tolua_S, "Error in function call '#funcname#': Expected a function for parameter #1");
+		return lua_do_error(tolua_S, "Error in function call '#funcname#': Not called on an object instance");
 	}
 
 	// Create a reference to the function:
@@ -1042,9 +1046,9 @@ static int tolua_cWorld_ScheduleTask(lua_State * tolua_S)
 		return lua_do_error(tolua_S, "Error in function call '#funcname#': Could not get function reference of parameter #1");
 	}
 	
-	int Ticks = (int) tolua_tonumber (tolua_S, 3, 0);
+	int DelayTicks = (int)tolua_tonumber(tolua_S, 2, 0);
 
-	self->ScheduleTask(new cLuaScheduledWorldTask(*Plugin, FnRef, Ticks));
+	World->ScheduleTask(DelayTicks, new cLuaScheduledWorldTask(*Plugin, FnRef));
 	return 0;
 }