New game plugin by Joshua Simmons FS#7369: Goban plugin, Go/Igo/Weiqi/Baduk game recorder and viewer.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19972 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 236 insertions, 0 deletions

diff --git a/apps/plugins/goban/game.c b/apps/plugins/goban/game.c
new file mode 100644
index 0000000..9ecf836
--- /dev/null
+++ b/apps/plugins/goban/game.c
@@ -0,0 +1,236 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2007-2009 Joshua Simmons <mud at majidejima dot com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "game.h"
+#include "types.h"
+#include "board.h"
+#include "goban.h"
+#include "sgf.h"
+#include "sgf_output.h"
+#include "sgf_parse.h"
+#include "sgf_storage.h"
+#include "display.h"
+
+static void pre_game_setup (void);
+
+char save_file[SAVE_FILE_LENGTH];
+bool game_dirty = false;
+bool autosave_dirty = false;
+
+int move_num = 0;
+
+unsigned char current_player = BLACK;
+
+struct header_t header;
+
+void
+set_game_modified (void)
+{
+    game_dirty = true;
+    autosave_dirty = true;
+}
+
+bool
+load_game (const char *filename)
+{
+    rb->memset (&header, 0, sizeof (header));
+
+    if (rb->strlen (filename) + 1 > SAVE_FILE_LENGTH)
+    {
+        DEBUGF ("file name too long\n");
+        return false;
+    }
+
+    if (!rb->file_exists (filename))
+    {
+        DEBUGF ("file doesn't exist!\n");
+        return false;
+    }
+
+    pre_game_setup ();
+
+    rb->strcpy (save_file, filename);
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost (true);
+#endif
+
+    rb->splash (0, "Loading...");
+
+    bool parse_failed = false;
+    if (!parse_sgf (save_file))
+    {
+        rb->splash (3 * HZ, "Unable to parse SGF file.  Will overwrite.");
+        parse_failed = true;
+    }
+
+    game_dirty = false;
+    autosave_dirty = false;
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost (false);
+#endif
+
+    if (header.handicap >= 2)
+    {
+        current_player = WHITE;
+    }
+
+    post_game_setup_sgf ();
+
+    if (!parse_failed)
+    {
+        draw_screen_display();
+        if (rb->strcmp(filename, DEFAULT_SAVE))
+        {
+            metadata_summary();
+        }
+    }
+
+    return true;
+}
+
+
+bool
+save_game (const char *filename)
+{
+    if (rb->strlen (filename) + 1 > SAVE_FILE_LENGTH)
+    {
+        return false;
+    }
+
+    /* We only have to do something if the game is dirty, or we're being
+       asked to save to a different location than we loaded from.
+
+       If the game isn't dirty and we're being asked to save to default,
+       we also don't have to do anything.*/
+    if (!game_dirty &&
+        (rb->strcmp (filename, save_file) == 0 ||
+         rb->strcmp (filename, DEFAULT_SAVE) == 0))
+    {
+        return true;
+    }
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost (true);
+#endif
+
+    rb->splash (0, "Saving...");
+
+    if (output_sgf (filename))
+    {
+        /* saving only "cleans" the game if it's not a save to default,
+         * or if our save_file is actually default
+         *
+         * (so autosaves won't prevent legitimate saves to a Save As or
+         * loaded file)
+         */
+        if (rb->strcmp (filename, DEFAULT_SAVE) ||
+            rb->strcmp (save_file, DEFAULT_SAVE) == 0)
+        {
+            game_dirty = false;
+        }
+
+        /* but saving anywhere means that autosave isn't dirty */
+        autosave_dirty = false;
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+        rb->cpu_boost (false);
+#endif
+        /* The save succeeded.  Now, if we saved to an actual file (not to the
+         * DEFAULT_SAVE), then we should delete the DEFAULT_SAVE file because
+         * the changes stored in it are no longer unsaved.
+         */
+        if (rb->strcmp (filename, DEFAULT_SAVE))
+        {
+            rb->remove(DEFAULT_SAVE);
+        }
+
+        return true;
+    }
+    else
+    {
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+        rb->cpu_boost (false);
+#endif
+        return false;
+    }
+}
+
+
+static void
+pre_game_setup (void)
+{
+    rb->memset (&header, 0, sizeof (header));
+
+    clear_caches_sgf ();
+    free_tree_sgf ();
+
+    set_size_board (MAX_BOARD_SIZE, MAX_BOARD_SIZE);
+
+    clear_board ();
+
+    game_dirty = true;
+    move_num = 0;
+
+    play_mode = MODE_PLAY;
+
+    rb->strcpy (save_file, DEFAULT_SAVE);
+
+    header_marked = false;
+}
+
+
+bool
+setup_game (int width, int height, int handicap, int komi)
+{
+    pre_game_setup ();
+
+    if (!set_size_board (width, height))
+    {
+        return false;
+    }
+
+    clear_board ();
+
+    /* place handicap */
+    if (handicap >= 2)
+    {
+        current_player = WHITE;
+    }
+    else if (handicap < 0)
+    {
+        return false;
+    }
+    else
+    {
+        current_player = BLACK;
+    }
+
+    header.handicap = handicap;
+    setup_handicap_sgf ();
+
+    header.komi = komi;
+
+    post_game_setup_sgf ();
+
+    return true;
+}