added xrick game

original xrick code by 'BigOrno' at:
http://www.bigorno.net/xrick/

Rockbox port, plus bugfixes at:
https://github.com/pierluigi-vicinanza/xrick

Further changes:

 * Additonal fixes from g#3026
 * Port to modern plugin API
 * Add Pluginlib keymap fallback
 * Support all >1bpp screens
 * Fix build warnings in miniz
 * Better error message when resources are missing

Change-Id: Id83928bc2539901b0221692f65cbca41389c58e7

apps/plugins/xrick/data/sprites.h

@@ -0,0 +1,70 @@
+/*
+ * xrick/data/sprites.h
+ *
+ * Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net).
+ * Copyright (C) 2008-2014 Pierluigi Vicinanza.
+ * All rights reserved.
+ *
+ * The use and distribution terms for this software are contained in the file
+ * named README, which can be found in the root of this distribution. By
+ * using this software in any fashion, you are agreeing to be bound by the
+ * terms of this license.
+ *
+ * You must not remove this notice, or any other, from this software.
+ */
+
+/*
+ * NOTES -- PC version
+ *
+ * A sprite consists in 4 columns and 21 rows of (U16 mask, U16 pict),
+ * each pair representing 8 pixels (cga encoding, two bits per pixels).
+ * Sprites are stored in 'sprites.bin' and are loaded by spr_init. Memory
+ * is freed by spr_shutdown.
+ *
+ * There are four sprites planes. Plane 0 is the raw content of 'sprites.bin',
+ * and planes 1, 2 and 3 contain copies of plane 0 with all sprites shifted
+ * 2, 4 and 6 pixels to the right.
+ */
+
+#ifndef _SPRITES_H_
+#define _SPRITES_H_
+
+#include "xrick/config.h"
+
+#include "xrick/system/basic_types.h"
+
+#include <stddef.h> /* size_t */
+
+#ifdef GFXPC
+
+typedef struct {
+  U16 mask;
+  U16 pict;
+} spriteX_t;
+
+enum {
+    SPRITES_NBR_ROWS = 21,
+    SPRITES_NBR_COLS = 4
+};
+typedef spriteX_t sprite_t[SPRITES_NBR_COLS][SPRITES_NBR_ROWS];   /* one sprite */
+
+#endif /* GFXPC */
+
+
+#ifdef GFXST
+
+enum {
+    SPRITES_NBR_ROWS = 21,
+    SPRITES_NBR_COLS = 4,
+    SPRITES_NBR_DATA = SPRITES_NBR_ROWS * SPRITES_NBR_COLS
+};
+typedef U32 sprite_t[SPRITES_NBR_DATA];
+
+#endif /* GFXST */
+
+extern size_t sprites_nbr_sprites;
+extern sprite_t *sprites_data;
+
+#endif /* ndef _SPRITES_H_ */
+
+/* eof */