A new API for saving highscores in game plugins

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6611 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/lib/SOURCES

@@ -1,4 +1,5 @@
 configfile.c
+highscore.c
 #ifdef HAVE_LCD_BITMAP
 gray_black_display.c
 gray_blockfuncs.c

apps/plugins/lib/highscore.c

@@ -0,0 +1,99 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "plugin.h"
+#include "highscore.h"
+
+static struct plugin_api *rb;
+
+void highscore_init(struct plugin_api* newrb)
+{
+    rb = newrb;
+}
+
+int highscore_save(char *filename, struct highscore *scores, int num_scores)
+{
+    int i;
+    int fd;
+    int rc;
+    char buf[80];
+
+    fd = rb->open(filename, O_WRONLY|O_CREAT);
+    if(fd < 0)
+        return -1;
+    
+    for(i = 0;i < num_scores;i++)
+    {
+        rb->snprintf(buf, sizeof(buf)-1, "%s:%d:%d\n",
+                     scores[i].name, scores[i].score, scores[i].level);
+        rc = rb->write(fd, buf, rb->strlen(buf));
+        if(rc < 0)
+        {
+            rb->close(fd);
+            return -2;
+        }
+    }
+    rb->close(fd);
+    return 0;
+}
+
+int highscore_load(char *filename, struct highscore *scores, int num_scores)
+{
+    int i;
+    int fd;
+    char buf[80];
+    char *name, *score, *level;
+    char *ptr;
+
+    fd = rb->open(filename, O_RDONLY);
+    if(fd < 0)
+        return -1;
+
+    rb->memset(scores, 0, sizeof(struct highscore)*num_scores);
+
+    i = -1;
+    while(rb->read_line(fd, buf, sizeof(buf)-1) && i < num_scores)
+    {
+        i++;
+        
+        DEBUGF("%s\n", buf);
+        name = buf;
+        ptr = rb->strchr(buf, ':');
+        if ( !ptr )
+            continue;
+        *ptr = 0;
+        ptr++;
+        
+        rb->strncpy(scores[i].name, name, sizeof(scores[i].name));
+        
+        DEBUGF("%s\n", scores[i].name);
+        score = ptr;
+        
+        ptr = rb->strchr(ptr, ':');
+        if ( !ptr )
+            continue;
+        *ptr = 0;
+        ptr++;
+        
+        scores[i].score = rb->atoi(score);
+        
+        level = ptr;
+        scores[i].level = rb->atoi(level);
+    }    
+    return 0;
+}

apps/plugins/lib/highscore.h

@@ -0,0 +1,33 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef HIGHSCORE_H
+#define HIGHSCORE_H
+
+struct highscore
+{
+    char name[32];
+    int score;
+    int level;
+};
+
+void highscore_init(struct plugin_api* newrb);
+int highscore_save(char *filename, struct highscore *scores, int num_scores);
+int highscore_load(char *filename, struct highscore *scores, int num_scores);
+
+#endif