From 62e06cc2a432bb9499646f089796157135829195 Mon Sep 17 00:00:00 2001
From: Thomas Martitz <kugel@rockbox.org>
Date: Sun, 5 Jun 2011 11:23:53 +0000
Subject: [PATCH] Accept FS#5153 - Doom Scrollwheel Patch

It hardcodes the scrollwheel for straving left/right.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29968 a1c6a512-1295-4272-9138-f99709370657
---
 apps/plugins/doom/d_event.h |  3 ++-
 apps/plugins/doom/g_game.c  | 13 +++++++++++++
 apps/plugins/doom/i_video.c | 24 +++++++++++++++++++++++-
 3 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/apps/plugins/doom/d_event.h b/apps/plugins/doom/d_event.h
index c131ed56e1..a29cee8b98 100644
--- a/apps/plugins/doom/d_event.h
+++ b/apps/plugins/doom/d_event.h
@@ -47,7 +47,8 @@ enum
    ev_keydown,
    ev_keyup,
    ev_mouse,
-   ev_joystick
+   ev_joystick,
+   ev_scroll
 };
 typedef unsigned evtype_t;
 
diff --git a/apps/plugins/doom/g_game.c b/apps/plugins/doom/g_game.c
index e41c84c378..99f8e63187 100644
--- a/apps/plugins/doom/g_game.c
+++ b/apps/plugins/doom/g_game.c
@@ -229,6 +229,9 @@ static unsigned int   dclicktime2;
 static unsigned int   dclickstate2;
 static unsigned int   dclicks2;
 
+// scrollwheel values
+static int scrollmag;
+
 // joystick values are repeated
 static int   joyxmove;
 static int   joyymove;
@@ -317,6 +320,13 @@ void G_BuildTiccmd(ticcmd_t* cmd)
 
    // let movement keys cancel each other out
 
+   /* strafe with scrollwheel */
+   if (scrollmag > 0)
+         side += 5*sidemove[speed];
+   if (scrollmag < 0)
+         side -= 5*sidemove[speed];
+   scrollmag = 0;         
+
    if (strafe)
    {
       if (gamekeydown[key_right])
@@ -757,6 +767,9 @@ boolean G_Responder (event_t* ev)
       joyymove = ev->data3;
       return true;    // eat events
 
+   case ev_scroll:
+      scrollmag = ev->data1;
+
    default:
       break;
    }
diff --git a/apps/plugins/doom/i_video.c b/apps/plugins/doom/i_video.c
index dd47cdbe2b..7023e8f87c 100644
--- a/apps/plugins/doom/i_video.c
+++ b/apps/plugins/doom/i_video.c
@@ -158,7 +158,9 @@ void I_ShutdownGraphics(void)
 
 #if (CONFIG_KEYPAD == IPOD_4G_PAD) || (CONFIG_KEYPAD == IPOD_3G_PAD) || \
     (CONFIG_KEYPAD == IPOD_1G2G_PAD)
-//#define DOOMBUTTON_SCROLLWHEEL
+#define DOOMBUTTON_SCROLLWHEEL
+#define DOOMBUTTON_SCROLLWHEEL_CC     BUTTON_SCROLL_BACK
+#define DOOMBUTTON_SCROLLWHEEL_CW    BUTTON_SCROLL_FWD
 #define DOOMBUTTON_UP         BUTTON_MENU
 #define DOOMBUTTON_WEAPON     BUTTON_SELECT
 #define DOOMBUTTON_LEFT       BUTTON_LEFT
@@ -493,6 +495,26 @@ static inline void getkey()
    holdbutton=rb->button_hold();
 #endif
 
+#ifdef DOOMBUTTON_SCROLLWHEEL
+   /* use button_get(false) for clickwheel checks */
+   int button; /* move me */
+   button = rb->button_get(false);
+   switch(button){
+   case DOOMBUTTON_SCROLLWHEEL_CC | BUTTON_REPEAT:
+   case DOOMBUTTON_SCROLLWHEEL_CC:
+         event.type = ev_scroll;
+         event.data1=-1;
+         D_PostEvent(&event);
+         break;
+   case DOOMBUTTON_SCROLLWHEEL_CW | BUTTON_REPEAT:
+   case DOOMBUTTON_SCROLLWHEEL_CW:
+         event.type = ev_scroll;
+         //event.data1=KEY_LEFTARROW;
+         event.data1=1;
+         D_PostEvent(&event);
+         break;
+   }
+#endif   
    newbuttonstate = rb->button_status();
 #ifdef DOOMBUTTON_SCROLLWHEEL
    newbuttonstate |= read_scroll_wheel();