The following predefined macros are available in your scripts:

Name Description

DEBUG	Defined if the game is being compiled in debug mode, not defined otherwise
STRICT	Defined if "Enforce Object Based Scripting" is ticked, not defined otherwise
STRICT_STRINGS	Defined if "Enforce new-style strings" is ticked, not defined otherwise
LRPRECEDENCE	Defined if "Left-to-right operator precedence" is ticked, not defined otherwise
AGS_NEW_STRINGS	Defined if AGS 2.71 or later (with new-String support), not defined otherwise
AGS_SUPPORTS_IFVER	Defined if AGS 2.72 or later (with #ifver support), not defined otherwise
AGS_MAX_INV_ITEMS	The maximum number of inventory items
AGS_MAX_CONTROLS_PER_GUI	The maximum number of controls on a GUI
AGS_MAX_OBJECTS	The maximum objects per room
AGS_MAX_HOTSPOTS	The maximum hotspots per room
AGS_MAX_REGIONS	The maximum regions per room

You can check for whether a macro is defined or not by using the #ifdef and #ifndef keywords:

#ifndef STRICT
  // only compile the MoveCharacter command if not using object-based scripting
  MoveCharacter(EGO, 30, 40);
#endif
#ifdef DEBUG
  // only display this when the game is compiled in debug mode
  Display("Debugging information");
#endif

#ifndef AGS_NEW_STRINGS
#error This script requires at least AGS 2.71
#endif

The other constants (AGS_MAX_*) are useful if you are writing some script code that you want to be portable to different versions of AGS, and to pick up the limits from the user's AGS version. For example, if you wanted to store some extra information on all the inventory items, you could do:

int invWeights[AGS_MAX_INV_ITEMS];