Hidden class save tweaking

SourcePawn Compiler 1.5.0-manual
Copyright (c) 1997-2006, ITB CompuPhase, (C)2004-2008 AlliedModders, LLC

hidden.sp(101) : error 017: undefined symbol "RemoveHiddenVision"
hidden.sp(152) : error 017: undefined symbol "IsArenaMap"
hidden.sp(183) : error 017: undefined symbol "CanPlay"
hidden.sp(244) : error 017: undefined symbol "HiddenUnstick"
hidden.sp(256) : error 017: undefined symbol "HiddenUnstick"
hidden.sp(293) : error 017: undefined symbol "GiveHiddenVision"
hidden.sp(298) : error 017: undefined symbol "GiveHiddenVision"
hidden.sp(304) : error 017: undefined symbol "GiveHiddenVision"
hidden.sp(320) : error 017: undefined symbol "GiveHiddenVision"
hidden.sp(329) : error 017: undefined symbol "IsClientPlaying"
hidden.sp(356) : error 017: undefined symbol "DisableCps"
hidden.sp(424) : error 017: undefined symbol "RemoveHiddenPowers"
hidden.sp(450) : error 017: undefined symbol "CanPlay"
hidden.sp(457) : error 017: undefined symbol "HiddenUnstick"
hidden.sp(474) : error 017: undefined symbol "HiddenSpecial"
hidden.sp(479) : error 017: undefined symbol "HiddenBoo"
hidden.sp(506) : error 017: undefined symbol "ResetHidden"
hidden.sp(514) : error 017: undefined symbol "Dissolve"
hidden.sp(518) : error 017: undefined symbol "GiveHiddenPowers"
hidden.sp(522) : error 017: undefined symbol "ShowHiddenHP"
hidden.sp(571) : error 017: undefined symbol "CanPlay"
hidden.sp(571) : warning 209: function "NewGame" should return a value
hidden.sp(573) : warning 209: function "NewGame" should return a value
hidden.sp(576) : error 017: undefined symbol "SelectHidden"
hidden.sp(577) : warning 209: function "NewGame" should return a value
hidden.sp(580) : error 017: undefined symbol "IsClientPlaying"
hidden.sp(609) : error 029: invalid expression, assumed zero
hidden.sp(614) : warning 217: loose indentation
hidden.sp(620) : warning 217: loose indentation
hidden.sp(623) : warning 217: loose indentation
hidden.sp(623) : error 029: invalid expression, assumed zero
hidden.sp(623) : error 004: function "OnMapStart" is not implemented

Compilation aborted.
26 Errors.
Fix compiler errors
Fix self-attack SelectHidden bug