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Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients [message #487615 is a reply to message #487614]

Fri, 16 May 2014 07:48

Jerad2142
Messages: 3805
Registered: July 2006
Location: USA

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General (3 Stars)

danpaul88 wrote on Fri, 16 May 2014 07:56

Jerad Gray wrote on Fri, 16 May 2014 14:53

danpaul88 wrote on Sun, 04 May 2014 10:02

All GameObjects have a guarunteed lifecycle whereby they transition from Created -> Destroyed, usually via Killed unless removed from the level by a script or other event. Scripts attached to that object are free to make the assumption that they can clean up resources once Killed or Destroyed are called. Subsequently causing that GameObject to be alive again and triggering Damaged events or another Killed / Destroyed event in this case would cause that script to be in an invalid state and could result in a crash.

I don't think this statement is quite right, unless the lifecycle does not have to wait for all scripts with a Created function to complete; because, I have encountered plenty of times (both in 3.4.4 and 4.1) that Created fired after Destroyed, I've got a few tricks that prevent destroyed from continuing if created of a script hasn't been completed yet as I've had crashing issues in the past due to uninitialized objects and variables Sad

I don't see how that could happen unless you're destroying objects in the initial Created cycle for all game objects, which is inadvisable and rather inefficient (why create objects if you're just going to destroy them instantly on game start?). If you can provide a reproduction case for that we will look into adding a fix in the code to ensure Created is always called before Destroyed (even if we end up doing something like if (!created) {Created();} Destroyed();)

Last time I ran into it was caused by changing the player character on spawn, but that is one of the rare occurrences where I had complete control and could have found a way around it besides just making a flag external to the script to check.

In the wild, I've seen it caused by things ranging from a separate timer doing clean up, to something a player does (for example once I saw a player die while at a PT (due to lag or a lockup which ever the case was they were still in the PT after their char died) and just as the player's character spawned they bought a character from the PT, the destroy flag on the scripts attached to the spawn character were called before the create due to the character being 'destroyed' and replaced with a new character.

Mind you, this is only a problem if your storing an array index, or a pointer in your script (playerId for efficiency, or a pointer to a list being the most common occurance).

Normally I just protect against it now by attaching a dummy script as the final step of create and then checking for the attached script on any classes that I've found can be called before create (Custom, Damaged, Killed, and Destroyed are the ones that come to mind) on any sensitive scripts (in all of ECW I've done this less than 50 times, and that's a good 4.27MB of code.

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[Message index]

		Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Wed, 31 July 2013 17:00
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Omar007 on Thu, 01 August 2013 03:02
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Thu, 01 August 2013 05:04
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Omar007 on Thu, 01 August 2013 05:35
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Thu, 01 August 2013 07:04
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Omar007 on Thu, 01 August 2013 08:24
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Thu, 01 August 2013 09:24
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: jonwil on Thu, 01 August 2013 18:32
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Fri, 02 August 2013 00:17
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Fri, 02 August 2013 00:30
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Fri, 02 August 2013 00:42
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Fri, 02 August 2013 02:04
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Fri, 02 August 2013 02:27
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Omar007 on Fri, 02 August 2013 05:02
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: EvilWhiteDragon on Sat, 03 August 2013 01:00
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Gen_Blacky on Thu, 21 November 2013 15:05
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: BAGUETTE on Thu, 21 November 2013 15:21
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sat, 03 May 2014 13:38
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Sat, 03 May 2014 16:46
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sat, 03 May 2014 17:46
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Sat, 03 May 2014 17:56
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sat, 03 May 2014 18:02
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Sun, 04 May 2014 02:25
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 10:34
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Neijwiert on Sun, 04 May 2014 06:30
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Sun, 04 May 2014 09:02
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 10:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Wed, 07 May 2014 13:08
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 14:37
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Jerad2142 on Fri, 16 May 2014 06:53
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Fri, 16 May 2014 06:56
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Jerad2142 on Fri, 16 May 2014 07:48
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Fri, 16 May 2014 08:01
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Jerad2142 on Fri, 16 May 2014 08:15
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: reborn on Sun, 04 May 2014 09:06
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Sun, 04 May 2014 11:03
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 11:32
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Sun, 04 May 2014 12:44
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 12:55
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Sun, 04 May 2014 13:01
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 13:10
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Sun, 04 May 2014 13:15
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 13:24
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 04 May 2014 14:26
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Mon, 05 May 2014 03:43
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Mon, 05 May 2014 09:44
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Mon, 05 May 2014 05:13
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: bussardnr on Tue, 06 May 2014 21:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Wed, 07 May 2014 11:10
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Wed, 07 May 2014 12:50
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Wed, 07 May 2014 12:57
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Thu, 15 May 2014 09:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Fri, 16 May 2014 08:24
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: zunnie on Wed, 28 May 2014 15:11
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Thu, 29 May 2014 01:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Thu, 29 May 2014 18:32
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Mauler on Thu, 29 May 2014 21:18
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Thu, 29 May 2014 22:25
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: roszek on Thu, 29 May 2014 22:34
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Thu, 29 May 2014 22:41
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: zunnie on Thu, 29 May 2014 05:41
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Jerad2142 on Thu, 29 May 2014 17:37
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: zunnie on Thu, 29 May 2014 17:58
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: roszek on Thu, 29 May 2014 21:10
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Thu, 29 May 2014 21:45
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Fri, 30 May 2014 01:42
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: jonwil on Fri, 30 May 2014 04:59
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: reborn on Fri, 27 June 2014 04:07
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: zunnie on Sun, 22 June 2014 10:11
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: bmruze on Thu, 26 June 2014 08:13
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: jonwil on Fri, 27 June 2014 16:40
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Thu, 26 June 2014 08:52
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Fri, 27 June 2014 17:37
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Sat, 28 June 2014 01:01
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: EvilWhiteDragon on Sat, 28 June 2014 08:45
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Xpert on Sat, 28 June 2014 15:29
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: EvilWhiteDragon on Sun, 29 June 2014 01:57
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Xpert on Mon, 30 June 2014 07:31
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: EvilWhiteDragon on Mon, 30 June 2014 09:13
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: StealthEye on Sat, 28 June 2014 12:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Sun, 29 June 2014 15:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: BillieJoe67 on Mon, 30 June 2014 06:09
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Xpert on Mon, 30 June 2014 12:37
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: StealthEye on Mon, 30 June 2014 14:58
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Mon, 30 June 2014 15:05
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: StealthEye on Mon, 30 June 2014 15:37
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: zunnie on Mon, 30 June 2014 15:44
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: jonwil on Mon, 30 June 2014 18:41
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Mon, 30 June 2014 19:12
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: EvilWhiteDragon on Mon, 30 June 2014 23:14
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Tue, 01 July 2014 01:14
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: jonwil on Tue, 01 July 2014 01:43
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 05:46
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Tue, 01 July 2014 01:53
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Tue, 01 July 2014 06:03
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 07:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Tue, 01 July 2014 07:29
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 07:31
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Tue, 01 July 2014 08:49
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 09:31
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Tue, 01 July 2014 09:55
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 10:10
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Xpert on Tue, 01 July 2014 10:26
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 10:33
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Tue, 01 July 2014 10:28
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Xpert on Tue, 01 July 2014 10:43
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 10:52
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Tue, 01 July 2014 11:25
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Tue, 01 July 2014 11:06
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Tue, 01 July 2014 11:16
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 11:20
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: iRANian on Tue, 01 July 2014 11:27
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: StealthEye on Tue, 01 July 2014 13:19
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 01 July 2014 13:53
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Ethenal on Tue, 01 July 2014 13:51
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: jonwil on Tue, 01 July 2014 16:17
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: danpaul88 on Wed, 02 July 2014 02:47
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Jerad2142 on Wed, 02 July 2014 07:28
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Wed, 02 July 2014 08:34
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: Whitedragon on Tue, 15 July 2014 02:13
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: dblaney1 on Tue, 15 July 2014 15:26
		Re: Syncing or changing BuildingGameObj 'IsDetroyed' state for clients By: zunnie on Tue, 15 July 2014 02:34

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