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/e_bomb.c

@@ -0,0 +1,158 @@
+/*
+ * xrick/e_bomb.c
+ *
+ * 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.
+ */
+
+#include "xrick/e_bomb.h"
+
+#include "xrick/game.h"
+#include "xrick/ents.h"
+#include "xrick/e_rick.h"
+#include "xrick/system/system.h"
+#ifdef ENABLE_SOUND
+#include "xrick/data/sounds.h"
+#endif
+
+/*
+ * public vars (for performance reasons)
+ */
+bool e_bomb_lethal;
+U8 e_bomb_xc;
+U16 e_bomb_yc;
+
+/*
+ * private vars
+ */
+U8 e_bomb_ticker;
+
+/*
+ * Bomb hit test
+ *
+ * ASM 11CD
+ * returns: true/hit, false/not
+ */
+bool e_bomb_hit(U8 e)
+{
+    if (ent_ents[e].x > (E_BOMB_ENT.x >= 0xE0 ? 0xFF : E_BOMB_ENT.x + 0x20))
+            return false;
+    if (ent_ents[e].x + ent_ents[e].w < (E_BOMB_ENT.x > 0x04 ? E_BOMB_ENT.x - 0x04 : 0))
+            return false;
+    if (ent_ents[e].y > (E_BOMB_ENT.y + 0x1D))
+            return false;
+    if (ent_ents[e].y + ent_ents[e].h < (E_BOMB_ENT.y > 0x0004 ? E_BOMB_ENT.y - 0x0004 : 0))
+            return false;
+    return true;
+}
+
+/*
+ * Initialize bomb
+ */
+void e_bomb_init(U16 x, U16 y)
+{
+    E_BOMB_ENT.n = 0x03;
+    E_BOMB_ENT.x = x;
+    E_BOMB_ENT.y = y;
+    e_bomb_ticker = E_BOMB_TICKER;
+    e_bomb_lethal = false;
+
+    /*
+     * Atari ST dynamite sprites are not centered the
+     * way IBM PC sprites were ... need to adjust things a little bit
+     */
+#ifdef GFXST
+    E_BOMB_ENT.x += 4;
+    E_BOMB_ENT.y += 5;
+#endif
+
+}
+
+
+/*
+ * Entity action
+ *
+ * ASM 18CA
+ */
+void
+e_bomb_action(U8 e/*unused*/)
+{
+    (void)e;
+
+    /* tick */
+    e_bomb_ticker--;
+
+    if (e_bomb_ticker == 0)
+    {
+        /*
+         * end: deactivate
+         */
+        E_BOMB_ENT.n = 0;
+        e_bomb_lethal = false;
+    }
+    else if (e_bomb_ticker >= 0x0A)
+    {
+        /*
+         * ticking
+         */
+#ifdef ENABLE_SOUND
+        if ((e_bomb_ticker & 0x03) == 0x02)
+            syssnd_play(soundBombshht, 1);
+#endif
+#ifdef GFXST
+        /* ST bomb sprites sequence is longer */
+        if (e_bomb_ticker < 40)
+            E_BOMB_ENT.sprite = 0x99 + 19 - (e_bomb_ticker >> 1);
+        else
+#endif
+        E_BOMB_ENT.sprite = (e_bomb_ticker & 0x01) ? 0x23 : 0x22;
+    }
+    else if (e_bomb_ticker == 0x09)
+    {
+        /*
+         * explode
+         */
+#ifdef ENABLE_SOUND
+        syssnd_play(soundExplode, 1);
+#endif
+#ifdef GFXPC
+        E_BOMB_ENT.sprite = 0x24 + 4 - (e_bomb_ticker >> 1);
+#endif
+#ifdef GFXST
+        /* See above: fixing alignment */
+        E_BOMB_ENT.x -= 4;
+        E_BOMB_ENT.y -= 5;
+        E_BOMB_ENT.sprite = 0xa8 + 4 - (e_bomb_ticker >> 1);
+#endif
+        e_bomb_xc = E_BOMB_ENT.x + 0x0C;
+        e_bomb_yc = E_BOMB_ENT.y + 0x000A;
+        e_bomb_lethal = true;
+        if (e_bomb_hit(E_RICK_NO))
+            e_rick_gozombie();
+    }
+    else
+    {
+        /*
+         * exploding
+         */
+#ifdef GFXPC
+        E_BOMB_ENT.sprite = 0x24 + 4 - (e_bomb_ticker >> 1);
+#endif
+#ifdef GFXST
+        E_BOMB_ENT.sprite = 0xa8 + 4 - (e_bomb_ticker >> 1);
+#endif
+        /* exploding, hence lethal */
+        if (e_bomb_hit(E_RICK_NO))
+            e_rick_gozombie();
+    }
+}
+
+/* eof */