So I'm making a callout plugin, whenever there is a route enable already or blips which were not removed my plugin decides to crash LSPDFR, so I'm wondering how can I remove the routes that are already enabled or how I can prevent it from crashing.

 

OnCalloutAccepted();

// It gets to here and then crashes before it can log the Enabled route.

police.GetAttachedBlip().EnableRoute(System.Drawing.Color.Red); 
Game.LogTrivial("Enabled route");

And yes the variable police and the blip does exist.

" police = new Vehicle("police", spawnpoint.Around(10f));"

" CalloutUtils.addBlip(police, System.Drawing.Color.Blue);"

 

RagePluginHook.log:

[01/03/2018 13:01:54.823] LSPD First Response: ==============================
[01/03/2018 13:01:54.823] LSPD First Response: UNHANDLED EXCEPTION DURING GAME FIBER TICK
[01/03/2018 13:01:54.823] LSPD First Response: ------------------------------
[01/03/2018 13:01:54.823] LSPD First Response: Origin: Game fiber "CalloutManager".
[01/03/2018 13:01:54.823] LSPD First Response: ------------------------------
[01/03/2018 13:01:54.824] LSPD First Response: Exception type: System.NullReferenceException
[01/03/2018 13:01:54.824] LSPD First Response: Exception message: Object reference not set to an instance of an object.
[01/03/2018 13:01:54.824] LSPD First Response: ------------------------------
[01/03/2018 13:01:54.824] LSPD First Response: Inner exceptions:
[01/03/2018 13:01:54.825] LSPD First Response: ------------------------------
[01/03/2018 13:01:54.825] LSPD First Response: Stack trace:
[01/03/2018 13:01:54.826] LSPD First Response: at BCallouts.Callouts.PursuitAssistance.OnCalloutAccepted()
[01/03/2018 13:01:54.826] at ?????????????????????????????????????????.?????????????????????????????????????????() in E:\GTA V\LSPD First Response\LSPD First Response\Mod\Callouts\CalloutManager.cs:line 338
[01/03/2018 13:01:54.826] at ?????????????????????????????????????????.?????????????????????????????????????????() in E:\GTA V\LSPD First Response\LSPD First Response\Mod\Callouts\CalloutManager.cs:line 173
[01/03/2018 13:01:54.826] at Rage.GameFiber.Main()
[01/03/2018 13:01:54.826] LSPD First Response: ==============================

 

For some reason entity.GetAttachedBlip() returns null ref. You should store your blip in a variable: Blip policeBlip = new Blip(police); and refer in your code to that variable.

Thanks.

Also before using a Blip or Entity, always check if it is non-null and exists. There's a shorthand way to check this in RPH, just type if(blipVariableName) or if(entityVariableName).