diff --git a/configure.ac b/configure.ac
index 38a404b..e1b364e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,18 +13,26 @@ AM_CONFIG_HEADER(config.h)
 AM_PROG_CC_C_O
 AC_PROG_CPP
 
+AC_ARG_ENABLE(slang,
+  [  --enable-slang          slang graphics support (default enabled)])
 AC_ARG_ENABLE(ncurses,
-  [  --enable-ncurses        ncurses interface support (default is slang)])
+  [  --enable-ncurses        ncurses graphics support (default disabled)])
 
 if test "${enable_ncurses}" = "yes"
 then
   AC_CHECK_HEADER(ncurses.h,:,AC_MSG_ERROR([cannot find ncurses headers]))
   AC_CHECK_LIB(ncurses,initscr,:,AC_MSG_ERROR([cannot find ncurses library]))
 else
-  AC_CHECK_HEADER(slang.h,:,AC_MSG_ERROR([cannot find slang headers]))
-  AC_CHECK_LIB(slang,SLkp_init,:,AC_MSG_ERROR([cannot find slang library]))
+  if test "${enable_slang}" != "no"
+  then
+    AC_CHECK_HEADER(slang.h,:,AC_MSG_ERROR([cannot find slang headers]))
+    AC_CHECK_LIB(slang,SLkp_init,:,AC_MSG_ERROR([cannot find slang library]))
+  else
+    :
+  fi
 fi
 
+AM_CONDITIONAL(USE_SLANG, test "${enable_slang}" != "no")
 AM_CONDITIONAL(USE_NCURSES, test "${enable_ncurses}" = "yes")
 
 AC_OUTPUT([
diff --git a/src/Makefile.am b/src/Makefile.am
index d056d0d..1913174 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -7,12 +7,13 @@ AM_CFLAGS = -g -O2 -fno-strength-reduce -fomit-frame-pointer
 # Code qui fait des warnings == code de porc == deux baffes dans ta gueule
 AM_CFLAGS += -Wall -Wpointer-arith -Wcast-align -Wcast-qual -Wstrict-prototypes -Wshadow -Waggregate-return -Wmissing-prototypes -Wnested-externs
 
+if USE_SLANG
+CPPFLAGS_slang = -DUSE_SLANG
+LDFLAGS_slang = -lslang
+endif
 if USE_NCURSES
-CPPFLAGS_gfx = -DUSE_NCURSES
-LDFLAGS_gfx = -lncurses
-else
-CPPFLAGS_gfx = -DUSE_SLANG
-LDFLAGS_gfx = -lslang
+CPPFLAGS_ncurses = -DUSE_NCURSES
+LDFLAGS_ncurses = -lncurses
 endif
 
 bin_PROGRAMS = ttyvaders
@@ -33,6 +34,6 @@ ttyvaders_SOURCES = \
 	tunnel.c \
 	$(NULL)
 
-ttyvaders_CPPFLAGS = $(CPPFLAGS_gfx)
-ttyvaders_LDADD = $(LDFLAGS_gfx)
+ttyvaders_CPPFLAGS = $(CPPFLAGS_slang) $(CPPFLAGS_ncurses)
+ttyvaders_LDADD = $(LDFLAGS_slang) $(LDFLAGS_ncurses)
 
diff --git a/src/ceo.c b/src/ceo.c
index e451d66..cf882ce 100644
--- a/src/ceo.c
+++ b/src/ceo.c
@@ -3,7 +3,7 @@
  *   Copyright (c) 2002 Sam Hocevar <sam@zoy.org>
  *                 All Rights Reserved
  *
- *   $Id: ceo.c,v 1.4 2002/12/22 22:17:41 sam Exp $
+ *   $Id: ceo.c,v 1.5 2002/12/23 10:06:27 sam Exp $
  *
  *   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
@@ -22,6 +22,7 @@
 
 #include "config.h"
 
+#include <stdio.h>
 #include <unistd.h>
 
 #include "common.h"
diff --git a/src/common.h b/src/common.h
index cd0b5ed..70b2843 100644
--- a/src/common.h
+++ b/src/common.h
@@ -3,7 +3,7 @@
  *   Copyright (c) 2002 Sam Hocevar <sam@zoy.org>
  *                 All Rights Reserved
  *
- *   $Id: common.h,v 1.10 2002/12/23 09:28:37 sam Exp $
+ *   $Id: common.h,v 1.11 2002/12/23 10:06:27 sam Exp $
  *
  *   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
@@ -32,12 +32,17 @@
 #   define gfx_goto(x,y) SLsmg_gotorc(y,x)
 #   define gfx_putchar(x) SLsmg_write_char(x)
 #   define gfx_putstr(x) SLsmg_write_string(x)
-#else
+#elif USE_NCURSES
 #   include <curses.h>
 #   define gfx_color(x) attrset(COLOR_PAIR(x))
 #   define gfx_goto(x,y) move(y,x)
 #   define gfx_putchar(x) addch(x)
 #   define gfx_putstr(x) addstr(x)
+#else
+#   define gfx_color(x) do{}while(0)
+#   define gfx_goto(x,y) do{}while(0)
+#   define gfx_putchar(x) do{}while(0)
+#   define gfx_putstr(x) do{}while(0)
 #endif
 
 #define gfx_putcharTO(x,y,c) do{ gfx_goto(x,y); gfx_putchar(c); }while(0)
diff --git a/src/graphics.c b/src/graphics.c
index 331519d..ee0f8ff 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -3,7 +3,7 @@
  *   Copyright (c) 2002 Sam Hocevar <sam@zoy.org>
  *                 All Rights Reserved
  *
- *   $Id: graphics.c,v 1.4 2002/12/22 18:44:12 sam Exp $
+ *   $Id: graphics.c,v 1.5 2002/12/23 10:06:27 sam Exp $
  *
  *   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
@@ -49,7 +49,7 @@ int init_graphics( void )
 
     SLsmg_cls();
     SLsmg_refresh();
-#else
+#elif USE_NCURSES
     /* Initialize ncurses library */
     initscr();
     keypad(stdscr, TRUE);
@@ -57,6 +57,8 @@ int init_graphics( void )
     cbreak();
     noecho();
     nodelay(stdscr, TRUE);
+#else
+    /* Dummy driver */
 #endif
 
     return 0;
@@ -80,7 +82,7 @@ void init_game( game *g )
 
     g->w = SLtt_Screen_Cols;
     g->h = SLtt_Screen_Rows;
-#else
+#elif USE_NCURSES
     start_color();
 
     init_pair( BLACK, COLOR_BLACK, COLOR_BLACK );
@@ -96,6 +98,10 @@ void init_game( game *g )
 
     g->w = COLS;
     g->h = LINES;
+#else
+    /* Use dummy driver */
+    g->w = 80;
+    g->h = 25;
 #endif
 }
 
@@ -106,13 +112,15 @@ char get_key( void )
     {
         return SLang_getkey();
     }
-#else
+#elif USE_NCURSES
     char key;
 
     if( ( key = getch() ) != ERR )
     {
         return key;
     }
+#else
+    /* Use dummy driver */
 #endif
 
     return 0;
@@ -122,8 +130,10 @@ void clear_graphics( void )
 {
 #ifdef USE_SLANG
     SLsmg_cls();
-#else
+#elif USE_NCURSES
     clear();
+#else
+    /* Use dummy driver */
 #endif
 }
 
@@ -132,8 +142,10 @@ void refresh_graphics( void )
     gfx_goto( 0, 0 );
 #ifdef USE_SLANG
     SLsmg_refresh();
-#else
+#elif USE_NCURSES
     refresh();
+#else
+    /* Use dummy driver */
 #endif
 }
 
@@ -142,9 +154,10 @@ void end_graphics( void )
 #ifdef USE_SLANG
     SLang_reset_tty();
     SLsmg_reset_smg();
-#else
+#elif USE_NCURSES
     endwin();
+#else
+    /* Use dummy driver */
 #endif
 }
 
-
diff --git a/src/main.c b/src/main.c
index afc1b4c..e7954ca 100644
--- a/src/main.c
+++ b/src/main.c
@@ -3,7 +3,7 @@
  *   Copyright (c) 2002 Sam Hocevar <sam@zoy.org>
  *                 All Rights Reserved
  *
- *   $Id: main.c,v 1.9 2002/12/23 09:28:37 sam Exp $
+ *   $Id: main.c,v 1.10 2002/12/23 10:06:27 sam Exp $
  *
  *   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
@@ -69,6 +69,7 @@ static void start_game (game *g)
     g->p = create_player( g );
     g->al = malloc(sizeof(aliens));
 
+    init_bonus( g, g->bo );
     init_weapons( g, g->wp );
     init_explosions( g, g->ex );
     init_aliens( g, g->al );
@@ -128,7 +129,7 @@ static void start_game (game *g)
                         add_weapon( g, g->wp, (g->p->x + 2) << 4, g->p->y << 4, 0, 0, WEAPON_BEAM );
                     }
                     break;
-                case 'd':
+                case 'f':
                     if( g->p->nuke == 0 )
                     {
                         g->p->nuke = 40;
@@ -222,10 +223,7 @@ static void start_game (game *g)
     }
 
     free_starfield( g, g->sf );
-
-#if 0
-    free_player( p );
     free_tunnel( g->t );
-#endif
+//    free_player( g->p );
 }
 
diff --git a/src/tunnel.c b/src/tunnel.c
index 368b49f..57907be 100644
--- a/src/tunnel.c
+++ b/src/tunnel.c
@@ -3,7 +3,7 @@
  *   Copyright (c) 2002 Sam Hocevar <sam@zoy.org>
  *                 All Rights Reserved
  *
- *   $Id: tunnel.c,v 1.5 2002/12/23 09:28:37 sam Exp $
+ *   $Id: tunnel.c,v 1.6 2002/12/23 10:06:27 sam Exp $
  *
  *   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
@@ -39,8 +39,6 @@ tunnel * create_tunnel( game *g, int w, int h )
 
     if( t->w >= g->w )
     {
-        t->left[0] = -10;
-        t->right[0] = g->w + 10;
         for( i = 0; i < g->h; i++ )
         {
             t->left[i] = -10;
@@ -81,7 +79,7 @@ void update_tunnel( game *g, tunnel *t )
     int i,j,k;
 
     /* Slide tunnel one block vertically */
-    for( i = t->h; i--; )
+    for( i = t->h - 1; i--; )
     {
         t->left[i+1] = t->left[i];
         t->right[i+1] = t->right[i];