+++ /dev/null
-#include "glk.h"
-
-/* model.c: Model program for Glk API, version 0.5.
- Designed by Andrew Plotkin <erkyrath@eblong.com>
- http://www.eblong.com/zarf/glk/index.html
- This program is in the public domain.
-*/
-
-/* This is a simple model of a text adventure which uses the Glk API.
- It shows how to input a line of text, display results, maintain a
- status window, write to a transcript file, and so on. */
-
-/* This is the cleanest possible form of a Glk program. It includes only
- "glk.h", and doesn't call any functions outside Glk at all. We even
- define our own str_eq() and str_len(), rather than relying on the
- standard libraries. */
-
-/* We also define our own TRUE and FALSE and NULL. */
-#ifndef TRUE
-#define TRUE 1
-#endif
-#ifndef FALSE
-#define FALSE 0
-#endif
-#ifndef NULL
-#define NULL 0
-#endif
-
-/* The story, status, and quote windows. */
-static winid_t mainwin = NULL;
-static winid_t statuswin = NULL;
-static winid_t quotewin = NULL;
-
-/* A file reference for the transcript file. */
-static frefid_t scriptref = NULL;
-/* A stream for the transcript file, when it's open. */
-static strid_t scriptstr = NULL;
-
-/* Your location. This determines what appears in the status line. */
-static int current_room;
-
-/* A flag indicating whether you should look around. */
-static int need_look;
-
-/* Forward declarations */
-void glk_main(void);
-
-static void draw_statuswin(void);
-static int yes_or_no(void);
-
-static int str_eq(char *s1, char *s2);
-static int str_len(char *s1);
-
-static void verb_help(void);
-static void verb_jump(void);
-static void verb_yada(void);
-static void verb_quote(void);
-static void verb_move(void);
-static void verb_quit(void);
-static void verb_script(void);
-static void verb_unscript(void);
-static void verb_save(void);
-static void verb_restore(void);
-static void verb_alert(void);
-static void verb_notice(void);
-
-/* The glk_main() function is called by the Glk system; it's the main entry
- point for your program. */
-void glk_main(void)
-{
- /* Open the main window. */
- mainwin = glk_window_open(0, 0, 0, wintype_TextBuffer, 1);
- if (!mainwin) {
- /* It's possible that the main window failed to open. There's
- nothing we can do without it, so exit. */
- return;
- }
-
- /* Set the current output stream to print to it. */
- glk_set_window(mainwin);
-
- /* Open a second window: a text grid, above the main window, three lines
- high. It is possible that this will fail also, but we accept that. */
- statuswin = glk_window_open(mainwin, winmethod_Above | winmethod_Fixed,
- 3, wintype_TextGrid, 0);
-
- /* The third window, quotewin, isn't opened immediately. We'll do
- that in verb_quote(). */
-
- glk_put_string("Model Glk Program\nAn Interactive Model Glk Program\n");
- glk_put_string("By Andrew Plotkin.\nRelease 7.\n");
- glk_put_string("Type \"help\" for a list of commands.\n");
-
- current_room = 0; /* Set initial location. */
- need_look = TRUE;
-
- while (1) {
- char commandbuf[256];
- char *cx, *cmd;
- int gotline, len;
- event_t ev;
-
- draw_statuswin();
-
- if (need_look) {
- need_look = FALSE;
- glk_put_string("\n");
- glk_set_style(style_Subheader);
- if (current_room == 0)
- glk_put_string("The Room\n");
- else
- glk_put_string("A Different Room\n");
- glk_set_style(style_Normal);
- glk_put_string("You're in a room of some sort.\n");
- }
-
- glk_put_string("\n>");
- /* We request up to 255 characters. The buffer can hold 256, but we
- are going to stick a null character at the end, so we have to
- leave room for that. Note that the Glk library does *not*
- put on that null character. */
- glk_request_line_event(mainwin, commandbuf, 255, 0);
-
- gotline = FALSE;
- while (!gotline) {
-
- /* Grab an event. */
- glk_select(&ev);
-
- switch (ev.type) {
-
- case evtype_LineInput:
- if (ev.win == mainwin) {
- gotline = TRUE;
- /* Really the event can *only* be from mainwin,
- because we never request line input from the
- status window. But we do a paranoia test,
- because commandbuf is only filled if the line
- event comes from the mainwin request. If the
- line event comes from anywhere else, we ignore
- it. */
- }
- break;
-
- case evtype_Arrange:
- /* Windows have changed size, so we have to redraw the
- status window. */
- draw_statuswin();
- break;
- }
- }
-
- /* commandbuf now contains a line of input from the main window.
- You would now run your parser and do something with it. */
-
- /* First, if there's a blockquote window open, let's close it.
- This ensures that quotes remain visible for exactly one
- command. */
- if (quotewin) {
- glk_window_close(quotewin, NULL);
- quotewin = 0;
- }
-
- /* The line we have received in commandbuf is not null-terminated.
- We handle that first. */
- len = ev.val1; /* Will be between 0 and 255, inclusive. */
- commandbuf[len] = '\0';
-
- /* Then squash to lower-case. */
- for (cx = commandbuf; *cx; cx++) {
- *cx = glk_char_to_lower(*cx);
- }
-
- /* Then trim whitespace before and after. */
-
- for (cx = commandbuf; *cx == ' '; cx++) { };
-
- cmd = cx;
-
- for (cx = commandbuf+len-1; cx >= cmd && *cx == ' '; cx--) { };
- *(cx+1) = '\0';
-
- /* cmd now points to a nice null-terminated string. We'll do the
- simplest possible parsing. */
- if (str_eq(cmd, "")) {
- glk_put_string("Excuse me?\n");
- }
- else if (str_eq(cmd, "help")) {
- verb_help();
- }
- else if (str_eq(cmd, "move")) {
- verb_move();
- }
- else if (str_eq(cmd, "jump")) {
- verb_jump();
- }
- else if (str_eq(cmd, "yada")) {
- verb_yada();
- }
- else if (str_eq(cmd, "quote")) {
- verb_quote();
- }
- else if (str_eq(cmd, "quit")) {
- verb_quit();
- }
- else if (str_eq(cmd, "save")) {
- verb_save();
- }
- else if (str_eq(cmd, "restore")) {
- verb_restore();
- }
- else if (str_eq(cmd, "script")) {
- verb_script();
- }
- else if (str_eq(cmd, "unscript")) {
- verb_unscript();
- }
- else if (str_eq(cmd, "alert")) {
- verb_alert();
- }
- else if (str_eq(cmd, "notice")) {
- verb_notice();
- }
- else {
- glk_put_string("I don't understand the command \"");
- glk_put_string(cmd);
- glk_put_string("\".\n");
- }
- }
-}
-
-static void draw_statuswin(void)
-{
- char *roomname;
- glui32 width, height;
-
- if (!statuswin) {
- /* It is possible that the window was not successfully
- created. If that's the case, don't try to draw it. */
- return;
- }
-
- if (current_room == 0)
- roomname = "The Room";
- else
- roomname = "A Different Room";
-
- glk_set_window(statuswin);
- glk_window_clear(statuswin);
-
- glk_window_get_size(statuswin, &width, &height);
-
- /* Print the room name, centered. */
- glk_window_move_cursor(statuswin, (width - str_len(roomname)) / 2, 1);
- glk_put_string(roomname);
-
- /* Draw a decorative compass rose in the upper right. */
- glk_window_move_cursor(statuswin, width - 3, 0);
- glk_put_string("\\|/");
- glk_window_move_cursor(statuswin, width - 3, 1);
- glk_put_string("-*-");
- glk_window_move_cursor(statuswin, width - 3, 2);
- glk_put_string("/|\\");
-
- glk_set_window(mainwin);
-}
-
-static int yes_or_no(void)
-{
- char commandbuf[256];
- char *cx;
- int gotline, len;
- event_t ev;
-
- draw_statuswin();
-
- /* This loop is identical to the main command loop in glk_main(). */
-
- while (1) {
- glk_request_line_event(mainwin, commandbuf, 255, 0);
-
- gotline = FALSE;
- while (!gotline) {
-
- glk_select(&ev);
-
- switch (ev.type) {
- case evtype_LineInput:
- if (ev.win == mainwin) {
- gotline = TRUE;
- }
- break;
-
- case evtype_Arrange:
- draw_statuswin();
- break;
- }
- }
-
- len = ev.val1;
- commandbuf[len] = '\0';
- for (cx = commandbuf; *cx == ' '; cx++) { };
-
- if (*cx == 'y' || *cx == 'Y')
- return TRUE;
- if (*cx == 'n' || *cx == 'N')
- return FALSE;
-
- glk_put_string("Please enter \"yes\" or \"no\": ");
- }
-
-}
-
-static void verb_help(void)
-{
- glk_put_string("This model only understands the following commands:\n");
- glk_put_string("HELP: Display this list.\n");
- glk_put_string("JUMP: A verb which just prints some text.\n");
- glk_put_string("YADA: A verb which prints a very long stream of text.\n");
- glk_put_string("MOVE: A verb which prints some text, and also changes the status line display.\n");
- glk_put_string("QUOTE: A verb which displays a block quote in a temporary third window.\n");
- glk_put_string("SCRIPT: Turn on transcripting, so that output will be echoed to a text file.\n");
- glk_put_string("UNSCRIPT: Turn off transcripting.\n");
- glk_put_string("SAVE: Write fake data to a save file.\n");
- glk_put_string("RESTORE: Read it back in.\n");
- glk_put_string("ALERT: Print a frightful message.\n");
- glk_put_string("NOTICE: Print an interesting message.\n");
- glk_put_string("QUIT: Quit and exit.\n");
-}
-
-static void verb_jump(void)
-{
- glk_put_string("You jump on the fruit, spotlessly.\n");
-}
-
-static void verb_yada(void)
-{
- /* This is a goofy (and overly ornate) way to print a long paragraph.
- It just shows off line wrapping in the Glk implementation. */
- #define NUMWORDS (13)
- static char *wordcaplist[NUMWORDS] = {
- "Ga", "Bo", "Wa", "Mu", "Bi", "Fo", "Za", "Mo", "Ra", "Po",
- "Ha", "Ni", "Na"
- };
- static char *wordlist[NUMWORDS] = {
- "figgle", "wob", "shim", "fleb", "moobosh", "fonk", "wabble",
- "gazoon", "ting", "floo", "zonk", "loof", "lob",
- };
- static int wcount1 = 0;
- static int wcount2 = 0;
- static int wstep = 1;
- static int jx = 0;
- int ix;
- int first = TRUE;
-
- for (ix=0; ix<85; ix++) {
- if (ix > 0) {
- glk_put_string(" ");
- }
-
- if (first) {
- glk_put_string(wordcaplist[(ix / 17) % NUMWORDS]);
- first = FALSE;
- }
-
- glk_put_string(wordlist[jx]);
- jx = (jx + wstep) % NUMWORDS;
- wcount1++;
- if (wcount1 >= NUMWORDS) {
- wcount1 = 0;
- wstep++;
- wcount2++;
- if (wcount2 >= NUMWORDS-2) {
- wcount2 = 0;
- wstep = 1;
- }
- }
-
- if ((ix % 17) == 16) {
- glk_put_string(".");
- first = TRUE;
- }
- }
-
- glk_put_char('\n');
-}
-
-static void verb_quote(void)
-{
- glk_put_string("Someone quotes some poetry.\n");
-
- /* Open a third window, or clear it if it's already open. Actually,
- since quotewin is closed right after line input, we know it
- can't be open. But better safe, etc. */
- if (!quotewin) {
- /* A five-line window above the main window, fixed size. */
- quotewin = glk_window_open(mainwin, winmethod_Above | winmethod_Fixed,
- 5, wintype_TextBuffer, 0);
- if (!quotewin) {
- /* It's possible the quotewin couldn't be opened. In that
- case, just give up. */
- return;
- }
- }
- else {
- glk_window_clear(quotewin);
- }
-
- /* Print some quote. */
- glk_set_window(quotewin);
- glk_set_style(style_BlockQuote);
- glk_put_string("Tomorrow probably never rose ");
- glk_put_string("or set\n Or went out and bought cheese, or anything like that\n"
- "And anyway, what light through yonder quote box breaks\n"
- "Handle to my hand?\n");
- glk_put_string(" -- Fred\n");
-
- glk_set_window(mainwin);
-}
-
-static void verb_move(void)
-{
- current_room = (current_room+1) % 2;
- need_look = TRUE;
-
- glk_put_string("You ");
- glk_set_style(style_Emphasized);
- glk_put_string("walk");
- glk_set_style(style_Normal);
- glk_put_string(" for a while.\n");
-}
-
-static void verb_quit(void)
-{
- glk_put_string("Are you sure you want to quit? ");
- if (yes_or_no()) {
- glk_put_string("Thanks for playing.\n");
- glk_exit();
- /* glk_exit() actually stops the process; it does not return. */
- }
-}
-
-static void verb_script(void)
-{
- if (scriptstr) {
- glk_put_string("Scripting is already on.\n");
- return;
- }
-
- /* If we've turned on scripting before, use the same file reference;
- otherwise, prompt the player for a file. */
- if (!scriptref) {
- scriptref = glk_fileref_create_by_prompt(
- fileusage_Transcript | fileusage_TextMode,
- filemode_WriteAppend, 0);
- if (!scriptref) {
- glk_put_string("Unable to place script file.\n");
- return;
- }
- }
-
- /* Open the file. */
- scriptstr = glk_stream_open_file(scriptref, filemode_WriteAppend, 0);
- if (!scriptstr) {
- glk_put_string("Unable to write to script file.\n");
- return;
- }
- glk_put_string("Scripting on.\n");
- glk_window_set_echo_stream(mainwin, scriptstr);
- glk_put_string_stream(scriptstr,
- "This is the beginning of a transcript.\n");
-}
-
-static void verb_unscript(void)
-{
- if (!scriptstr) {
- glk_put_string("Scripting is already off.\n");
- return;
- }
-
- /* Close the file. */
- glk_put_string_stream(scriptstr,
- "This is the end of a transcript.\n\n");
- glk_stream_close(scriptstr, NULL);
- glk_put_string("Scripting off.\n");
- scriptstr = NULL;
-}
-
-static void verb_save(void)
-{
- int ix;
- frefid_t saveref;
- strid_t savestr;
-
- saveref = glk_fileref_create_by_prompt(
- fileusage_SavedGame | fileusage_BinaryMode,
- filemode_Write, 0);
- if (!saveref) {
- glk_put_string("Unable to place save file.\n");
- return;
- }
-
- savestr = glk_stream_open_file(saveref, filemode_Write, 0);
- if (!savestr) {
- glk_put_string("Unable to write to save file.\n");
- glk_fileref_destroy(saveref);
- return;
- }
-
- glk_fileref_destroy(saveref); /* We're done with the file ref now. */
-
- /* Write some binary data. */
- for (ix=0; ix<256; ix++) {
- glk_put_char_stream(savestr, (unsigned char)ix);
- }
-
- glk_stream_close(savestr, NULL);
-
- glk_put_string("Game saved.\n");
-}
-
-static void verb_restore(void)
-{
- int ix;
- int err;
- glui32 ch;
- frefid_t saveref;
- strid_t savestr;
-
- saveref = glk_fileref_create_by_prompt(
- fileusage_SavedGame | fileusage_BinaryMode,
- filemode_Read, 0);
- if (!saveref) {
- glk_put_string("Unable to find save file.\n");
- return;
- }
-
- savestr = glk_stream_open_file(saveref, filemode_Read, 0);
- if (!savestr) {
- glk_put_string("Unable to read from save file.\n");
- glk_fileref_destroy(saveref);
- return;
- }
-
- glk_fileref_destroy(saveref); /* We're done with the file ref now. */
-
- /* Read some binary data. */
- err = FALSE;
-
- for (ix=0; ix<256; ix++) {
- ch = glk_get_char_stream(savestr);
- if (ch == (glui32)(-1)) {
- glk_put_string("Unexpected end of file.\n");
- err = TRUE;
- break;
- }
- if (ch != (glui32)ix) {
- glk_put_string("This does not appear to be a valid saved game.\n");
- err = TRUE;
- break;
- }
- }
-
- glk_stream_close(savestr, NULL);
-
- if (err) {
- glk_put_string("Failed.\n");
- return;
- }
-
- glk_put_string("Game restored.\n");
-}
-
-void verb_alert()
-{
- glk_set_style(style_Alert);
- glk_put_string("O noes!\n");
- glk_set_style(style_Normal);
-}
-
-void verb_notice()
-{
- glk_set_style(style_Note);
- glk_put_string("The answer... is 42!\n");
- glk_set_style(style_Normal);
-}
-
-
-/* simple string length test */
-static int str_len(char *s1)
-{
- int len;
- for (len = 0; *s1; s1++)
- len++;
- return len;
-}
-
-/* simple string comparison test */
-static int str_eq(char *s1, char *s2)
-{
- for (; *s1 && *s2; s1++, s2++) {
- if (*s1 != *s2)
- return FALSE;
- }
-
- if (*s1 || *s2)
- return FALSE;
- else
- return TRUE;
-}
-
projects / rodin / chimara.git / blobdiff