Help with OnEntityDeath errors

Ok this is my code

Code:

using UnityEngine;
using System.Collections.Generic;namespace Oxide.Plugins
{
    [Info("Custom Airstrike", "JTC", 0.1)]
    [Description("Custom Airstrike.")]    class CustomAirstrike : RustPlugin
    {           int chktmr = 0;
     
        void OnEntityDeath(BaseCombatEntity entity, HitInfo info)
            {
            if (entity == null || info?.Initiator == null) return;
         
            var victim = entity.ToPlayer();
            var attacker = info.Initiator.ToPlayer();
         
            if (victim.displayName == "Bandit") {
            chktmr = chktmr + 1;
            }
            if (chktmr == 3) {
            ConsoleSystem.Run(ConsoleSystem.Option.Server, "airstrike strike " + attacker.displayName);
            PrintToChat("Airstrike called to " + attacker.displayName");
            chktmr = 0;
         
            }
        }    }
}

It compiles fine and works just like I want it to, BUT it keeps going berserk in console with:

Code:

at Oxide.Plugins.CustomAirstrike.OnEntityDeath (.BaseCombatEntity entity, .HitInfo info) [0x00000] in <filename unknown>:0
  at Oxide.Plugins.CustomAirstrike.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00000] in <filename unknown>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00000] in <filename unknown>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x00000] in <filename unknown>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00000] in <filename unknown>:0

Can anyone please tell me what's wrong?

 

Ah I missed one line.

Code:

Failed to call hook 'OnEntityDeath' on plugin 'CustomAirstrike v0.1.0' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.CustomAirstrike.OnEntityDeath (.BaseCombatEntity entity, .HitInfo info) [0x00000] in <filename unknown>:0
  at Oxide.Plugins.CustomAirstrike.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00000] in <filename unknown>:0
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00000] in <filename unknown>:0
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x00000] in <filename unknown>:0
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00000] in <filename unknown>:0 

 

And how would I do that?
[DOUBLEPOST=1519232523][/DOUBLEPOST](I'm as new to this as they come)

 

Add checks like:
if (!(info.Initiator is BasePlayer)) return;
if (!(entity is BasePlayer)) return;
Or add single one like
if (!(info.Initiator is BasePlayer) || !(entity is BasePlayer))
return;

 

Ok thank you very much.

But what would I use for if (!(info.Initiator is BasePlayer)) return; in case of NPC such as Scientists? And does entity.ToPlayer(); work in case of NPC or is there another command?
[DOUBLEPOST=1519301753][/DOUBLEPOST]Would this work?

Code:

           if (!(entity is BasePlayer)) return;
           if (entity.name.Contains("bear"))
            return;
            if (entity.name.Contains("boar"))
            return;
            if (entity.name.Contains("chicken"))
            return;
            if (entity.name.Contains("horse"))
            return;
            if (entity.name.Contains("stag"))
            return;
            if (entity.name.Contains("wolf"))
            return;
            if (entity.name.Contains("zombie"))
            return;