Read offset from gamedata instead of hardcoded.

cstrike/addons/sourcemod/gamedata/zombiereloaded.txt

@@ -1,3 +1,17 @@
 "Games"
 {
+    "cstrike"
+    {
+        "Offsets"
+        {
+            // CCSPlayer::m_LastHitGroup
+            // CCSPlayer::OnTakeDamage_Alive(CTakeDamageInfo const&)+122     mov     ecx, [ebp+this]
+            // CCSPlayer::OnTakeDamage_Alive(CTakeDamageInfo const&)+125     mov     edx, [ecx+4444]
+            // CCSPlayer::OnTakeDamage_Alive(CTakeDamageInfo const&)+12B     mov     dword ptr [esp+4], offset aHitgroup ; "hitgroup"
+            "m_LastHitGroup"
+            {
+                "linux" "4444"
+            }
+        }
+    }
 }