Setup like this
void SetupIndexes()
{
using namespace indexes;
//Client
GetAllClasses = 8;
//Engine
GetScreenSize = 5;
GetPlayerInfo = 8;
GetLocalPlayer = 12;
ClientCmd = 108;
SetViewAngles = 19;
GetViewAngles = 18;
WorldToScreenMatrix = 37;
//ClientEntList
GetClientEntity = 3;
GetHighestEntityIndex = 8;
GetClientEntityFromHandle = 7;
//Surface
SetDrawColor = 15;
DrawFilledRect = 16;
DrawOutlinedRect = 18;
DrawLine = 19;
SCreateFont = 71;
SetFontGlyphSet = 72;
DrawSetTextFont = 23;
DrawSetTextColor = 25;
DrawSetTextPos = 26;
DrawPrintText = 28;
//ModelInfo
GetStudioModel = 29;
}