Xworld - Another World interpreter for Rockbox

Co-conspirators: Franklin Wei, Benjamin Brown

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This work is based on:
- Fabien Sanglard's "Fabother World" based on
- Piotr Padkowski's newRaw interpreter which was based on
- Gregory Montoir's reverse engineering of
- Eric Chahi's assembly code

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Progress:

* The plugin runs pretty nicely (with sound!) on most color targets
* Keymaps for color LCD targets are complete
* The manual entry is finished
* Grayscale/monochrome support is NOT PLANNED
  - the game looks horrible in grayscale! :p

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Notes:

* The original game strings were built-in to the executable, and
  were copyrighted and could not be used.
* This port ships with an alternate set of strings by default, but
  can load the "official" strings from a file at runtime.

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To be done (in descending order of importance):

* vertical stride compatibility                          <30% done>
* optimization                                           <10% done>

Change-Id: I3155b0d97c2ac470cb8a2040f40d4139ddcebfa5
Reviewed-on: http://gerrit.rockbox.org/1077
Reviewed-by: Michael Giacomelli <giac2000@hotmail.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/apps/plugins/xworld/util.c b/apps/plugins/xworld/util.c
new file mode 100644
index 0000000000..b82691ad29
--- /dev/null
+++ b/apps/plugins/xworld/util.c
@@ -0,0 +1,82 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2014 Franklin Wei, Benjamin Brown
+ * Copyright (C) 2004 Gregory Montoir
+ *
+ * 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 "plugin.h"
+#include "lib/pluginlib_exit.h"
+#include <stdarg.h>
+#include "util.h"
+uint16_t g_debugMask;
+
+#ifdef XWORLD_DEBUG
+void debug_real(uint16_t cm, const char *msg, ...) {
+#ifdef ROCKBOX_HAS_LOGF
+    char buf[1024];
+    if (cm & g_debugMask) {
+        va_list va;
+        va_start(va, msg);
+        rb->vsnprintf(buf, 1024, msg, va);
+        va_end(va);
+        LOGF("%s", buf);
+    }
+#else
+    (void) cm;
+    (void) msg;
+#endif
+}
+#endif
+
+void error(const char *msg, ...) {
+    char buf[1024];
+    va_list va;
+    va_start(va, msg);
+    rb->vsnprintf(buf, 1024, msg, va);
+    va_end(va);
+    rb->splashf(HZ * 2, "ERROR: %s!", buf);
+    LOGF("ERROR: %s", buf);
+    exit(-1);
+}
+
+void warning(const char *msg, ...) {
+    char buf[1024];
+    va_list va;
+    va_start(va, msg);
+    rb->vsnprintf(buf, 1024, msg, va);
+    va_end(va);
+    rb->splashf(HZ * 2, "WARNING: %s!", buf);
+    LOGF("WARNING: %s", buf);
+}
+
+void string_lower(char *p) {
+    for (; *p; ++p) {
+        if (*p >= 'A' && *p <= 'Z') {
+            *p += 'a' - 'A';
+        }
+    }
+}
+
+void string_upper(char *p) {
+    for (; *p; ++p) {
+        if (*p >= 'a' && *p <= 'z') {
+            *p += 'A' - 'a';
+        }
+    }
+}