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InvalidCastException at OnExplosiveThrownError
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Posted 5 years ago
Last updated 5 years ago
#1

Hi Ty

Failed to call hook 'OnExplosiveThrown' on plugin 'RaidTracker v1.2.3' (InvalidCastException: Null object cannot be converted to a value type.)
at System.Convert.ChangeType (System.Object value, System.Type conversionType, System.IFormatProvider provider) [0x00029] in <fb001e01371b4adca20013e0ac763896>:0
at System.Convert.ChangeType (System.Object value, System.Type conversionType) [0x0000c] in <fb001e01371b4adca20013e0ac763896>:0
at Oxide.Core.Plugins.Plugin.Call[T] (System.String hook, System.Object[] args) [0x00008] in <ec05e0208c9149bba43236ca58fea105>:0
at Oxide.Plugins.RaidTracker.OnExplosiveThrown (BasePlayer player, BaseEntity entity) [0x00047] in <d46a15497d504758bcba9e50432b8492>:0
at Oxide.Plugins.RaidTracker.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x004c7] in <d46a15497d504758bcba9e50432b8492>:0
at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in <80b90e8213db44b29ec2d4111764172c>:0
at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in <ec05e0208c9149bba43236ca58fea105>:0
at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in <ec05e0208c9149bba43236ca58fea105>:0
Posted 5 years ago
Last updated 5 years ago
#2

looks like EventManager is not loaded properly, or that Oxide is having a hard time finding it. I will simply the check for it to prevent the error

and to @Wulf

if (Convert.ToBoolean(EventManager?.Call("isPlaying", player)))​

should prevent any type of null reference exception from being thrown, even though this should never fail:

if (EventManager != null && EventManager.IsLoaded && EventManager.Call<bool>("isPlaying", player))​


I remember we had a discussion about EventManager vs EventManager != null being able to throw an exception at times. even though the exception here is being thrown at .Call<bool> trying to cast null as a boolean type. I am not sure how EventManager could make the call AND return null. so maybe this will help you pinpoint the cause? I am just using EventManager as an example as well... I dont believe there is any issue with the plugin itself

Posted 5 years ago
#3
nivex

looks like EventManager is not loaded properly, or that Oxide is having a hard time finding it

If you haven't already, I'd use a check for null and IsLoaded() if calling other plugins.
Posted 5 years ago
Last updated 5 years ago
#4

sure, I will add that before it... as shown in the second snippet of code

so it would be:

if (EventManager != null && EventManager.IsLoaded && Convert.ToBoolean(EventManager?.Call("isPlaying", player)))​

convert to boolean is helpful because it will parse null and return false. removing the need to use success is bool and (bool)success as the return
Posted 5 years ago
#5

You could do this as well:

EventManager.Call<bool>("isPlaying", player)​

You're already null checking, so no need for the ? in there.

Posted 5 years ago
#6

aye, that is what I was using and it still threw an exception. so it's why I've rewrote it as that