Update inventory arrays to be vectors. Add class for inventory. Change some structs that use inventories to classes to provide constructors, destructors, etc. Note that with this update all file operations should still be compatible with previous files.

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@971 3b4a5df2-a311-0410-b5c6-a8a6f20db521

Tactical/World Items.h

@@ -15,7 +15,8 @@
 //Kaiden: This constant is to flag items that an enemy drops when they die.
 #define	WORLD_ITEM_DROPPED_FROM_ENEMY								0x0800
 
-typedef struct
+//typedef struct
+struct WORLDITEM
 {
 	BOOLEAN				fExists;
 	INT16					sGridNo;
@@ -33,7 +34,7 @@ typedef struct
 	//This check is only performed the first time a map is loaded.  Later, it is entirely skipped.
 	UINT8					ubNonExistChance;  
 
-} WORLDITEM;
+}; // WORLDITEM;
 
 extern WORLDITEM		*gWorldItems;
 extern UINT32				guiNumWorldItems;