Pixel Crushers Forum

Posted: **Wed Feb 02, 2022 11:39 am**

Hi again! I've added a "Message Events" component to a quest object. I've configured as follows:

Required Sender: <None>
Required Target: <None>
Message: Quest State Changed
Parameter: my_quest_id
On Message (Message Args): Quest Object.OnMessage(MessageArgs messageArgs)

I have some code in a public method, "OnMessage", on the Quest Object, that does a switch on messageArgs.values[1], looking for QuestState.Active and QuestState.Successful. The code basically shows or hides the quest object on a minimap.

When I accept the quest, however, I get an exception - well, 7 exceptions all "stack overflow":

Code: Select all

Message System exception sending 'Quest State Changed'/'find_rexxars_family' to Rexxars Family (PixelCrushers.Wrappers.MessageEvents): The requested operation caused a stack overflow.
UnityEngine.Debug:LogError (object)
PixelCrushers.MessageSystem:SendMessageWithTarget (object,object,string,string,object[]) (at Assets/Plugins/Pixel Crushers/Common/Scripts/Message System/MessageSystem.cs:358)
PixelCrushers.MessageSystem:SendMessage (object,string,PixelCrushers.StringField,object[]) (at Assets/Plugins/Pixel Crushers/Common/Scripts/Message System/MessageSystem.cs:454)
PixelCrushers.QuestMachine.QuestMachineMessages:QuestStateChanged (object,PixelCrushers.StringField,PixelCrushers.QuestMachine.QuestState) (at Assets/Plugins/Pixel Crushers/Quest Machine/Scripts/Utility/QuestMachineMessages.cs:160)
PixelCrushers.QuestMachine.Quest:SetState (PixelCrushers.QuestMachine.QuestState,bool) (at Assets/Plugins/Pixel Crushers/Quest Machine/Scripts/Quest/Quest.cs:879)
PixelCrushers.QuestMachine.Quest:OnDestroy () (at Assets/Plugins/Pixel Crushers/Quest Machine/Scripts/Quest/Quest.cs:626)

If I disable the Message Events component, I don't get the exceptions thrown.

Any ideas?

Posted: **Wed Feb 02, 2022 11:54 am**

Dammit! Totally my fault (again!). Instead of selecting "Quest Object.OnMessage" in the event handler, I'd selected "MessageEvents.OnMessage"! No wonder it caused a stack overflow, it was calling itself!

Posted: **Wed Feb 02, 2022 12:00 pm**

Can I also just add, the Messaging System in Quest Machine is just absolutely brilliant. It is making the process of integrating quest behaviours an absolute breeze, and all without a line of code! I am loving Quest Machine, especially when I use it right!

Posted: **Wed Feb 02, 2022 12:11 pm**

Thanks! Glad you like it.

Pixel Crushers Forum

Stack Overflow when using Message Events component

Stack Overflow when using Message Events component

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Re: Stack Overflow when using Message Events component

Re: Stack Overflow when using Message Events component