*  160   21974   1.1.x

 *  161   22567

 *  162   22713

 *  163   22767

 *  164   23290

 *  165   23304

 *  166   23415

 *  167   23504

 *  168   23637

 *  169   23816

 *  170   23826

 *  171   23835

 *  172   23947

 *  173   23967   1.2.0-RC1

 *  174   23973   1.2.x

 *  175   24136

 *  176   24446

 *  177   24619

 *  178   24789

 *  179   24810

 *  180   24998   1.3.x

 *  181   25012

 *  182   25296

 *  183   25363

 */

extern const uint16 SAVEGAME_VERSION = 184; ///< Current savegame version of OpenTTD.

SavegameType _savegame_type; ///< type of savegame we are loading

uint32 _ttdp_version;     ///< version of TTDP savegame (if applicable)

uint16 _sl_version;       ///< the major savegame version identifier

byte   _sl_minor_version; ///< the minor savegame version, DO NOT USE!

char _savegame_format[8]; ///< how to compress savegames

bool _do_autosave;        ///< are we doing an autosave at the moment?

/** What are we currently doing? */

enum SaveLoadAction {

	SLA_LOAD,        ///< loading

	SLA_SAVE,        ///< saving

	SLA_PTRS,        ///< fixing pointers

	SLA_NULL,        ///< null all pointers (on loading error)

	SLA_LOAD_CHECK,  ///< partial loading into #_load_check_data

};

enum NeedLength {

	NL_NONE = 0,       ///< not working in NeedLength mode

	NL_WANTLENGTH = 1, ///< writing length and data

	NL_CALCLENGTH = 2, ///< need to calculate the length