Set `g_iSkillLevel` in `CCustomGameModeRules::RefreshSkillData()`

[andbass]

First of all great mod! Its one of my favorite ways to replay Half-Life.
As a disclaimer, I haven't really worked with the Half-Life SDK before so I could be wrong here.

There's this global int defined in globals.cpp:

DLL_GLOBAL int			g_iSkillLevel;

It's used to alter the behavior of NPCs in a few places, ex from hgrunt.cpp:2254:

if ( g_iSkillLevel == SKILL_HARD && HasConditions( bits_COND_CAN_RANGE_ATTACK2 ) && OccupySlot( bits_SLOTS_HGRUNT_GRENADE ) )
{
   ....
}

In the base CGameRules::RefreshSkillData(), this global gets updated:

	iSkill = (int)CVAR_GET_FLOAT("skill");
	g_iSkillLevel = iSkill;

But for custom gamemodes, CCustomGameModeRules::RefreshSkillData() only seems to alter gSkillData and not g_iSkillLevel as well which seems like a bug. Apologies if I missed something since again I'm pretty new to the SDK.

I haven't tried updating g_iSkillLevel in CCustomGameModeRules::RefreshSkillData() but I'll post an update once I figure out how to build the DLLs with any results. Thanks again for your work on this mod! And maybe see you on Knockout sometime (if I ever stop lurking and start posting...)

[suXinjke]

Chances are I didn't notice this global variable when I implemented this function, before I'd change the variable I'd try to set skill 1 and check that NPC specific behavior indeed matches skill 1 and not the difficulty gameplay mod config specifies.

Thank you for noticing, I want to mention it's not necessary to test/recompile yourself because even if you do and make pull requests - I'm ain't gonna make new moddb release immediately because the issue is not critical and I don't like to reupload 150MB with small fixes.