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Simplified textfile_sizes() and replaced all get_linemax() calls with it.
[plomrogue] / src / misc.c
index ab9963f9af491bc892cb3dce6fdb92582b2b9bb4..97c9fa69a96d0a2445eb54965c2fa6b5fdab3b47 100644 (file)
 /* misc.c */
 
 #include "misc.h"
-#include <stdio.h> /* for rename() */
+#include <errno.h> /* for errno */
 #include <unistd.h> /* for unlink(), acess() */
-#include <stdlib.h> /* for calloc(), free() */
+#include <stdlib.h> /* for size_t, calloc(), free() */
 #include <string.h> /* for strlen(), strcmp(), memcpy() */
-#include <stdint.h> /* for uint8_t */
-#include "windows.h" /* for suspend_win(), append_win(), reset_pad_offset(),
-                      * resize_active_win(), cycle_active_win(),
-                      * shift_active_win(), struct Win, struct WinMeta
-                      */
-#include "keybindings.h" /* for get_action_key(), save_keybindings(),
-                          * keyswin_move_selection(), keyswin_mod_key()
+#include <stdint.h> /* for uint8_t, uint16_t */
+#include "readwrite.h" /* for try_fopen(), try_fclose(), textfile_sizes(),
+                        * try_fputc(), try_fgetc()
+                        */
+#include "map_objects.h" /* for struct MapObj, get_player(), read_map_objects(),
+                          * write_map_objects()
                           */
-#include "readwrite.h" /* for [read/write]_uint[8/16/32][_bigendian]() */
-#include "map_objects.h" /* for struct Monster, write_map_objects(), */
-#include "map_object_actions.h" /* for is_passable(), move_monster() */
-#include "map.h" /* for map_scroll(),map_center_player(), Map struct,dir enum */
-#include "main.h" /* for World struct */
-#include "yx_uint16.h" /* for yx_uint16 */
-#include "rrand.h" /* for rrand(), rrand_seed() */
-#include "rexit.h" /* for exit_err() */
-
-
-extern void textfile_sizes(FILE * file, uint16_t * linemax_p,
-                           uint16_t * n_lines_p)
+#include "map_object_actions.h" /* for struct MapObjAct */
+#include "ai.h" /* for pretty_dumb_ai() */
+#include "map.h" /* for Map struct, is_passable() */
+#include "main.h" /* for world global */
+#include "yx_uint16.h" /* for yx_uint16 struct */
+#include "rexit.h" /* for exit_err(), exit_trouble() */
+#include "wincontrol.h" /* for init_winconfs(), init_wins(), free_winconfs(),
+                         * sorted_wintoggle_and_activate()
+                         */
+#include "windows.h" /* for suspend_win() */
+#include "command_db.h" /* for is_command_id_shortdsc() */
+
+
+
+extern uint16_t rrand()
+{
+    /* Constants as recommended by POSIX.1-2001 (see man page rand(3)). */
+    world.seed = ((world.seed * 1103515245) + 12345) % 4294967296;
+    return (world.seed >> 16); /* Ignore less random least significant bits. */
+}
+
+
+
+extern void * try_malloc(size_t size, char * f)
+{
+    void * p = malloc(size);
+    exit_trouble(NULL == p, f, "malloc()");
+    return p;
+}
+
+
+
+extern void * try_calloc(size_t size1, size_t size2, char * f)
+{
+    void * p = calloc(size1, size2);
+    exit_trouble(NULL == p, f, "calloc()");
+    return p;
+}
+
+
+
+extern void check_files_xor(char * p1, char * p2)
 {
-    uint16_t n_lines = 0;
-    int c = 0;
-    uint16_t linemax = 0;
-    uint16_t c_count = 0;
-    while (EOF != c)
+    char * msg1 = "A file '";
+    char * msg2 = "' exists, but no file '";
+    char * msg3 = "'. If everything was in order, both or noe would exist. "
+                  "The game won't start until this is corrected.";
+    uint16_t size = strlen(msg1) + strlen(p1) + strlen(msg2) + strlen(p2)
+                    + strlen(msg3);
+    char msg[size];
+    if      (!access(p1, F_OK) && access(p2, F_OK))
     {
-        c_count++;
-        c = getc(file);
-        if ('\n' == c)
-        {
-            if (c_count > linemax)
-            {
-                linemax = c_count + 1;
-            }
-            c_count = 0;
-            if (n_lines_p)
-            {
-                n_lines++;
-            }
-        }
+        sprintf(msg, "%s%s%s%s%s", msg1, p1, msg2, p2, msg3);
+        errno = 0;
+        exit_err(1, msg);
     }
-    fseek(file, 0, SEEK_SET);
-    * linemax_p = linemax;
-    if (n_lines_p)
+    else if (access(p1, F_OK) && !access(p2, F_OK))
     {
-        * n_lines_p = n_lines;
+        sprintf(msg, "%s%s%s%s%s", msg1, p2, msg2, p1, msg3);
+        errno = 0;
+        exit_err(1, msg);
     }
 }
 
 
 
-extern void update_log(struct World * world, char * text)
+extern void check_tempfile(char * path)
+{
+    char * msg1 = "A file '";
+    char * msg2 = "' exists, probably from a corrupted previous file saving "
+                  "process. To avoid corruption of game files, the game won't "
+                  "start until it is removed or renamed.";
+    uint16_t size = strlen(msg1) + strlen(path) + strlen(msg2);
+    char msg[size];
+    sprintf(msg, "%s%s%s", msg1, path, msg2);
+    exit_err(!access(path, F_OK), msg);
+}
+
+
+
+extern void save_interface_conf()
+{
+    save_keybindings("config/keybindings_global", &world.kb_global);
+    save_keybindings("config/keybindings_wingeom", &world.kb_wingeom);
+    save_keybindings("config/keybindings_winkeys", &world.kb_winkeys);
+    save_win_configs();
+}
+
+
+
+extern void load_interface_conf()
+{
+    init_keybindings("config/keybindings_global",  &world.kb_global);
+    init_keybindings("config/keybindings_wingeom", &world.kb_wingeom);
+    init_keybindings("config/keybindings_winkeys", &world.kb_winkeys);
+    init_winconfs();
+    init_wins();
+    sorted_wintoggle_and_activate();
+}
+
+
+
+extern void unload_interface_conf()
 {
-    static char * last_msg;
-    if (0 == last_msg)
+    free_keybindings(world.kb_global.kbs);
+    free_keybindings(world.kb_wingeom.kbs);
+    free_keybindings(world.kb_winkeys.kbs);
+    while (0 != world.wmeta->active)
     {
-        last_msg = calloc(1, sizeof(char));
+        suspend_win(world.wmeta->active);
+    }
+    free_winconfs();
+}
+
+
+
+extern void reload_interface_conf()
+{
+    unload_interface_conf();
+    load_interface_conf();
+}
+
+
+
+extern void update_log(char * text)
+{
+    char * f_name = "update_log()";
+    static char * last_msg;                 /* TODO: valgrind is dissatisfied */
+    if (0 == last_msg)                      /* with this calloc'd pointer not */
+    {                                       /* being freed. Rectify this?     */
+        last_msg = try_calloc(1, sizeof(char), f_name);
     }
     char * new_text;
-    uint16_t len_old = strlen(world->log);
+    uint16_t len_old = strlen(world.log);
     if (0 == strcmp(last_msg, text))
     {
         uint16_t len_whole = len_old + 1;
-        new_text = calloc(len_whole + 1, sizeof(char));
-        memcpy(new_text, world->log, len_old);
+        new_text = try_calloc(len_whole + 1, sizeof(char), f_name);
+        memcpy(new_text, world.log, len_old);
         memcpy(new_text + len_old, ".", 1);
     }
     else
     {
         uint16_t len_new = strlen(text);
         uint16_t len_whole = len_old + len_new + 1;
-        new_text = calloc(len_whole, sizeof(char));
-        memcpy(new_text, world->log, len_old);
+        new_text = try_calloc(len_whole, sizeof(char), f_name);
+        memcpy(new_text, world.log, len_old);
         memcpy(new_text + len_old, text, len_new);
-        last_msg = calloc(len_new + 1, sizeof(char));
+        last_msg = try_calloc(len_new + 1, sizeof(char), f_name);
         memcpy(last_msg, text, len_new);
     }
-    free(world->log);
-    world->log = new_text;
+    free(world.log);
+    world.log = new_text;
 }
 
 
@@ -112,114 +192,109 @@ extern uint16_t center_offset(uint16_t pos, uint16_t mapsize,
 
 
 
-extern void turn_over(struct World * world, char action)
+extern void turn_over(char action)
 {
-    if (1 == world->interactive)
-    {
-        FILE * file = fopen("record", "a");
-        exit_err(write_uint8(action, file), world, "Record writing failure.");
-        fclose(file);
-    }
-    world->turn++;
-    rrand_seed(world->seed * world->turn);
-    struct Monster * monster;
-    for (monster = world->monster;
-         monster != 0;
-         monster = monster->map_obj.next)
-    {
-        move_monster(world, monster);
-    }
-}
-
-
+    char * f_name = "turn_over()";
 
-extern void save_game(struct World * world)
-{
-    char * err_open  = "Error saving game: "
-                       "Unable to open 'savefile_new' for writing.";
-    char * err_write = "Error saving game: "
-                       "Trouble writing to opened 'savefile_new'.";
-    char * err_close = "Error saving game: "
-                       "Unable to close opened 'savefile_new'.";
-    char * err_unl   = "Error saving game: "
-                       "Unable to unlink old 'savefile'.";
-    char * err_move  = "Error saving game: "
-                        "Unable to rename 'savefile_tmp' to 'savefile'.";
-    char * savefile_tmp = "savefile_tmp";
-    char * savefile     = "savefile";
-    FILE * file = fopen(savefile_tmp, "w");
-    exit_err(0 == file, world, err_open);
-    if (   write_uint32_bigendian(world->seed, file)
-        || write_uint32_bigendian(world->turn, file)
-        || write_uint16_bigendian(world->player->pos.y + 1, file)
-        || write_uint16_bigendian(world->player->pos.x + 1, file)
-        || write_uint8(world->player->hitpoints, file)
-        || write_map_objects(world, world->monster, file)
-        || write_map_objects(world, world->item, file))
-    {
-        exit_err(1, world, err_write);
-    }
-    exit_err(fclose(file), world, err_close);
-    if (!access(savefile, F_OK))
-    {
-        exit_err(unlink(savefile), world, err_unl);
+    char * recordfile_tmp = "record_tmp";
+    char * recordfile     = "record";
+    if (1 == world.interactive)
+    {
+        FILE * file_old = try_fopen(recordfile,     "r", f_name);
+        FILE * file_new = try_fopen(recordfile_tmp, "w", f_name);
+        int c = try_fgetc(file_old, f_name);
+        while (EOF != c)
+        {
+            try_fputc((uint8_t) c, file_new, f_name);
+            c = try_fgetc(file_old, f_name);
+        }
+        try_fclose(file_old, f_name);
+        try_fputc(action, file_new, f_name);
+        if (   is_command_id_shortdsc(action, "drop")
+            || is_command_id_shortdsc(action, "use"))
+        {
+            try_fputc(world.inventory_select, file_new, f_name);
+        }
+        try_fclose_unlink_rename(file_new, recordfile_tmp, recordfile, f_name);
     }
-    exit_err(rename(savefile_tmp, savefile), world, err_move);
-}
 
-
-
-extern void toggle_window(struct WinMeta * win_meta, struct Win * win)
-{
-    if (0 != win->frame.curses_win)
+    struct MapObj * player = get_player();
+    struct MapObj * map_object = player;
+    uint8_t first_round = 1;
+    while (0 < player->lifepoints)
     {
-        suspend_win(win_meta, win);
-    }
-    else
-    {
-        append_win(win_meta, win);
+        if (NULL == map_object)
+        {
+            world.turn++;
+            map_object = world.map_objs;
+        }
+        if (0 < map_object->lifepoints)             /* map_object is animate. */
+        {
+            if (0 == first_round && 0 == map_object->progress)
+            {
+                if (map_object == player)
+                {
+                    break;
+                }
+                pretty_dumb_ai(map_object);
+            }
+            first_round = 0;
+            map_object->progress++;
+            struct MapObjAct * moa = world.map_obj_acts;
+            while (moa->id != map_object->command)
+            {
+                moa = moa->next;
+            }
+            if (map_object->progress == moa->effort)
+            {
+                moa->func(map_object);
+                map_object->progress = 0;
+            }
+        }
+        map_object = map_object->next;
     }
 }
 
 
 
-extern void scroll_pad(struct WinMeta * win_meta, char dir)
+extern void save_game()
 {
-    if      ('+' == dir)
-    {
-        reset_pad_offset(win_meta, win_meta->pad_offset + 1);
-    }
-    else if ('-' == dir)
-    {
-        reset_pad_offset(win_meta, win_meta->pad_offset - 1);
-    }
+    char * f_name = "save_game()";
+    char * savefile_tmp = "savefile_tmp";
+    char * savefile     = "savefile";
+    FILE * file = try_fopen(savefile_tmp, "w", f_name);
+    char line[12];
+    sprintf(line, "%u\n", world.mapseed);
+    try_fwrite(line, strlen(line), 1, file, f_name);
+    sprintf(line, "%u\n", world.seed);
+    try_fwrite(line, strlen(line), 1, file, f_name);
+    sprintf(line, "%u\n", world.turn);
+    try_fwrite(line, strlen(line), 1, file, f_name);
+    sprintf(line, "%u\n", world.score);
+    try_fwrite(line, strlen(line), 1, file, f_name);
+    write_map_objects(file);
+    try_fclose_unlink_rename(file, savefile_tmp, savefile, f_name);
 }
 
 
 
-extern void growshrink_active_window(struct WinMeta * win_meta, char change)
+extern void load_game()
 {
-    if (0 != win_meta->active)
-    {
-        struct yx_uint16 size = win_meta->active->frame.size;
-        if      (change == '-')
-        {
-            size.y--;
-        }
-        else if (change == '+')
-        {
-            size.y++;
-        }
-        else if (change == '_')
-        {
-            size.x--;
-        }
-        else if (change == '*')
-        {
-            size.x++;
-        }
-        resize_active_win (win_meta, size);
-    }
+    char * f_name = "load_game2()";
+    char * filename = "savefile";
+    FILE * file = try_fopen(filename, "r", f_name);
+    uint16_t linemax = textfile_sizes(file, NULL);
+    char line[linemax + 1];
+    try_fgets(line, linemax + 1, file, f_name);
+    world.mapseed = atoi(line);
+    try_fgets(line, linemax + 1, file, f_name);
+    world.seed = atoi(line);
+    try_fgets(line, linemax + 1, file, f_name);
+    world.turn = atoi(line);
+    try_fgets(line, linemax + 1, file, f_name);
+    world.score = atoi(line);
+    read_map_objects(file, line, linemax);
+    try_fclose(file, f_name);
 }
 
 
@@ -237,106 +312,26 @@ extern struct yx_uint16 find_passable_pos(struct Map * map)
 
 
 
-extern uint8_t meta_keys(int key, struct World * world,
-                         struct WinMeta * win_meta, struct Win * win_keys,
-                         struct Win * win_map, struct Win * win_info,
-                         struct Win * win_log)
+extern void nav_inventory(char dir)
 {
-    if (key == get_action_key(world->keybindings, "quit"))
-    {
-        return 1;
-    }
-    else if (key == get_action_key(world->keybindings, "scroll pad right"))
-    {
-        scroll_pad (win_meta, '+');
-    }
-    else if (key == get_action_key(world->keybindings, "scroll pad left"))
-    {
-        scroll_pad (win_meta, '-');
-    }
-    else if (key == get_action_key(world->keybindings, "toggle keys window"))
-    {
-        toggle_window(win_meta, win_keys);
-    }
-    else if (key == get_action_key(world->keybindings, "toggle map window"))
+    if ('u' == dir)
     {
-        toggle_window(win_meta, win_map);
-    }
-    else if (key == get_action_key(world->keybindings, "toggle info window"))
-    {
-        toggle_window(win_meta, win_info);
-    }
-    else if (key == get_action_key(world->keybindings, "toggle log window"))
-    {
-        toggle_window(win_meta, win_log);
-    }
-    else if (key == get_action_key(world->keybindings, "cycle forwards"))
-    {
-        cycle_active_win(win_meta, 'n');
-    }
-    else if (key == get_action_key(world->keybindings, "cycle backwards"))
-    {
-        cycle_active_win(win_meta, 'p');
-    }
-    else if (key == get_action_key(world->keybindings, "shift forwards"))
-    {
-        shift_active_win(win_meta, 'f');
-    }
-    else if (key == get_action_key(world->keybindings, "shift backwards"))
-    {
-        shift_active_win(win_meta, 'b');
-    }
-    else if (key == get_action_key(world->keybindings, "grow horizontally"))
-    {
-        growshrink_active_window(win_meta, '*');
-    }
-    else if (key == get_action_key(world->keybindings, "shrink horizontally"))
-    {
-        growshrink_active_window(win_meta, '_');
-    }
-    else if (key == get_action_key(world->keybindings, "grow vertically"))
-    {
-        growshrink_active_window(win_meta, '+');
-    }
-    else if (key == get_action_key(world->keybindings, "shrink vertically"))
-    {
-        growshrink_active_window(win_meta, '-');
-    }
-    else if (key == get_action_key(world->keybindings, "save keys"))
-    {
-        save_keybindings(world);
-    }
-    else if (key == get_action_key(world->keybindings, "keys nav up"))
-    {
-        keyswin_move_selection (world, 'u');
-    }
-    else if (key == get_action_key(world->keybindings, "keys nav down"))
-    {
-        keyswin_move_selection (world, 'd');
-    }
-    else if (key == get_action_key(world->keybindings, "keys mod"))
-    {
-        keyswin_mod_key (world, win_meta);
-    }
-    else if (key == get_action_key(world->keybindings, "map up"))
-    {
-        map_scroll (world->map, NORTH, win_map->frame.size);
-     }
-    else if (key == get_action_key(world->keybindings, "map down"))
-    {
-        map_scroll (world->map, SOUTH, win_map->frame.size);
-    }
-    else if (key == get_action_key(world->keybindings, "map right"))
-    {
-        map_scroll (world->map, EAST, win_map->frame.size);
+        if (world.inventory_select > 0)
+        {
+            world.inventory_select--;
+        }
+        return;
     }
-    else if (key == get_action_key(world->keybindings, "map left"))
+    struct MapObj * player = get_player();
+    struct MapObj * owned = player->owns;
+    if (NULL == owned)
     {
-        map_scroll (world->map, WEST, win_map->frame.size);
+        return;
     }
-    else if (key == get_action_key(world->keybindings, "map center player"))
+    uint8_t n_owned = 0;
+    for (; NULL != owned->next; owned = owned->next, n_owned++);
+    if (world.inventory_select < n_owned)
     {
-        map_center_player (world->map, world->player, win_map->frame.size);
+        world.inventory_select++;
     }
-    return 0;
 }