+typedef enum {
+ GO_TERMINATE,
+ GO_MOVE,
+ GO_TOP,
+ GO_CLEAROBJ,
+ GO_CHECKHINT,
+ GO_WORD2,
+ GO_UNKNOWN,
+ GO_DWARFWAKE,
+} phase_codes_t;
+
+/* Use fixed-lwength types to make the save format moore portable */
+typedef int32_t vocab_t; // index into a vocabulary array */
+typedef int32_t verb_t; // index into an actions array */
+typedef int32_t obj_t; // index into the object array */
+typedef int32_t loc_t; // index into the locations array */
+typedef int32_t turn_t; // turn counter or threshold */
+typedef int32_t bool32_t; // turn counter or threshold */
+
+struct game_t {
+ int32_t lcg_x;
+ int32_t abbnum; // How often to print int descriptions
+ score_t bonus; // What kind of finishing bonus we are getting
+ loc_t chloc; // pirate chest location
+ loc_t chloc2; // pirate chest alternate location
+ turn_t clock1; // # turns from finding last treasure to close
+ turn_t clock2; // # turns from warning till blinding flash
+ bool32_t clshnt; // has player read the clue in the endgame?
+ bool32_t closed; // whether we're all the way closed
+ bool32_t closng; // whether it's closing time yet
+ bool32_t lmwarn; // has player been warned about lamp going dim?
+ bool32_t novice; // asked for instructions at start-up?
+ bool32_t panic; // has player found out he's trapped?
+ bool32_t wzdark; // whether the loc he's leaving was dark
+ bool32_t blooded; // has player drunk of dragon's blood?
+ int32_t conds; // min value for cond[loc] if loc has any hints
+ int32_t detail; // level of detail in descriptions
+
+ /* dflag controls the level of activation of dwarves:
+ * 0 No dwarf stuff yet (wait until reaches Hall Of Mists)
+ * 1 Reached Hall Of Mists, but hasn't met first dwarf
+ * 2 Met 1t dwarf, others start moving, no knives thrown yet
+ * 3 A knife has been thrown (first set always misses) 3+
+ * Dwarves are mad (increases their accuracy) */
+ int32_t dflag;
+
+ int32_t dkill; // dwarves killed
+ int32_t dtotal; // total dwarves (including pirate) in loc
+ int32_t foobar; // progress in saying "FEE FIE FOE FOO".
+ int32_t holdng; // number of objects being carried
+ int32_t igo; // # uses of "go" instead of a direction
+ int32_t iwest; // # times he's said "west" instead of "w"
+ loc_t knfloc; // knife location; LOC_NOWERE if none, -1 after caveat
+ turn_t limit; // lifetime of lamp
+ loc_t loc; // where player is now
+ loc_t newloc; // where player is going
+ turn_t numdie; // number of times killed so far
+ loc_t oldloc; // where player was
+ loc_t oldlc2; // where player was two moves ago
+ obj_t oldobj; // last object player handled
+ int32_t saved; // point penalty for saves
+ int32_t tally; // count of treasures gained
+ int32_t thresh; // current threshold for endgame scoring tier
+ bool32_t seenbigwords; // have we red the graffiti in the Giant's Room?
+ turn_t trnluz; // # points lost so far due to turns used
+ turn_t turns; // counts commands given (ignores yes/no)
+ char zzword[TOKLEN + 1]; // randomly generated magic word from bird
+ struct {
+ int32_t abbrev; // has location been seen?
+ int32_t atloc; // head of object linked list per location
+ } locs[NLOCATIONS + 1];
+ struct {
+ int32_t seen; // true if dwarf has seen him
+ loc_t loc; // location of dwarves, initially hard-wired in
+ loc_t oldloc; // prior loc of each dwarf, initially garbage
+ } dwarves[NDWARVES + 1];
+ struct {
+#ifdef FOUNDBOOL
+ bool32_t found; // has the location of this object been found?
+#endif
+ loc_t fixed; // fixed location of object (if not IS_FREE)
+ int32_t prop; // object state */
+ loc_t place; // location of object
+ } objects[NOBJECTS + 1];
+ struct {
+ bool32_t used; // hints[i].used = true iff hint i has been used.
+ int32_t lc; // hints[i].lc = show int at LOC with cond bit i
+ } hints[NHINTS];
+ obj_t link[NOBJECTS * 2 + 1]; // object-list links
+};
+
+/*
+ * Game application settings - settings, but not state of the game, per se.
+ * This data is not saved in a saved game.
+ */
+struct settings_t {
+ FILE *logfp;
+ bool oldstyle;
+ bool prompt;
+ char **argv;
+ int argc;
+ int optind;
+ FILE *scriptfp;
+ int debug;
+};
+
+typedef struct {
+ char raw[LINESIZE];
+ vocab_t id;
+ word_type_t type;
+} command_word_t;
+
+typedef enum {
+ EMPTY,
+ RAW,
+ TOKENIZED,
+ GIVEN,
+ PREPROCESSED,
+ PROCESSING,
+ EXECUTED
+} command_state_t;
+
+typedef struct {
+ enum speechpart part;
+ command_word_t word[2];
+ verb_t verb;
+ obj_t obj;
+ command_state_t state;
+} command_t;
+
+/*
+ * Bump on save format change.
+ *
+ * Note: Verify that the tests run clean before bumping this, then rebuild the
+ * check files afterwards. Otherwise you will get a spurious failure due to the
+ * old version having been generated into a check file.
+ */
+#define SAVE_VERSION 31
+
+/*
+ * Goes at start of file so saves can be identified by file(1) and the like.
+ */
+#define ADVENT_MAGIC "open-adventure\n"
+
+/*
+ * If you change the first three members, the resume function may not properly
+ * reject saves from older versions. Later members can change, but bump the
+ * version when you do that.
+ */
+struct save_t {
+ char magic[sizeof(ADVENT_MAGIC)];
+ int32_t version;
+ int32_t canary;
+ struct game_t game;
+};
+
+extern struct game_t game;
+extern struct save_t save;
+extern struct settings_t settings;
+
+extern char *myreadline(const char *);
+extern bool get_command_input(command_t *);
+extern void clear_command(command_t *);
+extern void speak(const char *, ...);
+extern void sspeak(int msg, ...);
+extern void pspeak(vocab_t, enum speaktype, bool, int, ...);
+extern void rspeak(vocab_t, ...);
+extern void echo_input(FILE *, const char *, const char *);
+extern bool silent_yes_or_no(void);
+extern bool yes_or_no(const char *, const char *, const char *);
+extern void juggle(obj_t);
+extern void move(obj_t, loc_t);
+extern void put(obj_t, loc_t, int);
+extern void carry(obj_t, loc_t);
+extern void drop(obj_t, loc_t);
+extern int atdwrf(loc_t);
+extern int setbit(int);
+extern bool tstbit(int, int);
+extern void set_seed(int32_t);
+extern int32_t randrange(int32_t);
+extern int score(enum termination);
+extern void terminate(enum termination) __attribute__((noreturn));
+extern int savefile(FILE *);
+#if defined ADVENT_AUTOSAVE
+extern void autosave(void);
+#endif
+extern int suspend(void);
+extern int resume(void);
+extern int restore(FILE *);
+extern int initialise(void);
+extern phase_codes_t action(command_t);
+extern void state_change(obj_t, int);
+extern bool is_valid(struct game_t);
+extern void bug(enum bugtype, const char *) __attribute__((__noreturn__));
+
+/* represent an empty command word */
+static const command_word_t empty_command_word = {
+ .raw = "",
+ .id = WORD_EMPTY,
+ .type = NO_WORD_TYPE,
+};