diff -up Duel3_20060225_src/Source/main.cpp~ Duel3_20060225_src/Source/main.cpp

--- Duel3_20060225_src/Source/main.cpp~	2008-12-03 16:58:58.000000000 +0100

+++ Duel3_20060225_src/Source/main.cpp	2008-12-03 16:56:14.000000000 +0100

@@ -119,6 +119,7 @@ volatile int sec=0;

 int iGraphicsLoops=0;

 int iLogicLoops=0;

 bool bQuitGame=false;

+bool bFullScreen=true;

 #ifdef __unix__

 int check_and_create_dir(const char* dir);

 char *homedir;

@@ -240,6 +241,13 @@ int cur_song_num=rand()%3;

 int main(int argc, const char **argv) 

 {    

+    if (argc == 2 && !strcmp(argv[1], "-w"))

+        bFullScreen = false;

+    else if (argc != 1) {

+        printf("Usage: duel3 [-w]\nPass -w to run in windowed mode\n");

+        return 1;

+    }

+

 #ifdef __unix__

     homedir = getenv("HOME");

     homedir = homedir?homedir:(char *)".";

@@ -796,6 +804,8 @@ void loadShipDefs(char *filename)

 int initAllegroGL(void)

 {

+    int res;

+

     outtext(LOGFILE,"INIT ALLEGROGL\n");

     allegro_init();

 	install_allegro_gl();

@@ -806,7 +816,10 @@ int initAllegroGL(void)

     allegro_gl_clear_settings();

 	allegro_gl_set (AGL_COLOR_DEPTH, 32);

 	allegro_gl_set (AGL_Z_DEPTH, 16);

-	allegro_gl_set (AGL_FULLSCREEN, TRUE);

+	if (bFullScreen)

+	    allegro_gl_set (AGL_FULLSCREEN, TRUE);

+        else

+	    allegro_gl_set (AGL_FULLSCREEN, FALSE);

 	allegro_gl_set (AGL_DOUBLEBUFFER, 1);

 	allegro_gl_set (AGL_RENDERMETHOD, 1);

 	allegro_gl_set (AGL_SUGGEST, AGL_COLOR_DEPTH | AGL_Z_DEPTH | AGL_DOUBLEBUFFER

@@ -815,7 +828,12 @@ int initAllegroGL(void)

     outtext(LOGFILE,"Setting gfx mode\n");

 	set_color_depth (32);

-	if (set_gfx_mode(GFX_OPENGL_FULLSCREEN/*WINDOWED*//*FULLSCREEN*/, 800, 600, 0, 0) < 0) {

+	if (bFullScreen)

+	    res = set_gfx_mode(GFX_OPENGL_FULLSCREEN, 800, 600, 0, 0);

+        else

+	    res = set_gfx_mode(GFX_OPENGL_WINDOWED, 800, 600, 0, 0);

+

+	if (res < 0) {

         outtext(LOGFILE,"!!Error setting gfx mode!!\n");

 		allegro_message ("Error setting graphics mode:\n%s\n", allegro_error);

 		return -1;