walkbehind globals

Description

Variables
char *	AGS3::Globals::_walkBehindExists = nullptr
int *	AGS3::Globals::_walkBehindStartY = nullptr
int *	AGS3::Globals::_walkBehindEndY = nullptr
int8	AGS3::Globals::_noWalkBehindsAtAll = 0
int	AGS3::Globals::_walkBehindLeft [MAX_WALK_BEHINDS]
int	AGS3::Globals::_walkBehindTop [MAX_WALK_BEHINDS]
int	AGS3::Globals::_walkBehindRight [MAX_WALK_BEHINDS]
int	AGS3::Globals::_walkBehindBottom [MAX_WALK_BEHINDS]
AGS::Engine::IDriverDependantBitmap *	AGS3::Globals::_walkBehindBitmap [MAX_WALK_BEHINDS]
int	AGS3::Globals::_walkBehindsCachedForBgNum = -1
int	AGS3::Globals::_walk_behind_baselines_changed = 0
Rect	AGS3::Globals::_walkBehindAABB [MAX_WALK_BEHINDS]
std::vector< WalkBehindColumn >	AGS3::Globals::_walkBehindCols