User Messages

This is just a dump of some stuff for now, needs a complete revamp later.

1. define FFADE_IN 0x0001 // Just here so we don't pass 0 into the function
2. define FFADE_OUT 0x0002 // Fade out (not in)
3. define FFADE_MODULATE 0x0004 // Modulate (don't blend)
4. define FFADE_STAYOUT 0x0008 // ignores the duration, stays faded out until new ScreenFade message received
5. define FFADE_PURGE 0x0010 // Purges all other fades, replacing them with this one

 User Messages:  Name                              Index  Size 
                 Geiger                            0      1    
                 Train                             1      1    
                 HudText                           2      -1   
                 SayText                           3      -1   
                 SayText2                          4      -1   
                 TextMsg                           5      -1   
                 HudMsg                            6      -1   
                 ResetHUD                          7      1    
                 GameTitle                         8      0    
                 ItemPickup                        9      -1   
                 ShowMenu                          10     -1   
                 Shake                             11     13   
                 Fade                              12     10   
                 VGUIMenu                          13     -1   
                 CloseCaption                      14     7    
                 SendAudio                         15     -1   
                 RawAudio                          16     -1   
                 VoiceMask                         17     17   
                 RequestState                      18     0    
                 BarTime                           19     -1   
                 Damage                            20     -1   
                 RadioText                         21     -1   
                 HintText                          22     -1   
                 ReloadEffect                      23     2    
                 PlayerAnimEvent                   24     -1   
                 AmmoDenied                        25     2    
                 UpdateRadar                       26     -1   
                 KillCam                           27     -1   
 28 user messages in total