[Headless] Add --headless switch (no rendering, no audio).

Also remove now unused "--no-window" option, and relative OS getter and
setter.

1 files changed, 7 insertions, 8 deletions

diff --git a/main/main.cpp b/main/main.cpp
index 92ab52eecd..d91cc5c9bf 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -326,9 +326,10 @@ void Main::print_help(const char *p_binary) {
 
 	OS::get_singleton()->print("  --text-driver <driver>                       Text driver (Fonts, BiDi, shaping)\n");
 
+	OS::get_singleton()->print("  --headless                                   Enable headless mode (--display-driver headless --audio-driver Dummy). Useful for servers and with --script.\n");
+
 	OS::get_singleton()->print("\n");
 
-#ifndef SERVER_ENABLED
 	OS::get_singleton()->print("Display options:\n");
 	OS::get_singleton()->print("  -f, --fullscreen                             Request fullscreen mode.\n");
 	OS::get_singleton()->print("  -m, --maximized                              Request a maximized window.\n");
@@ -337,11 +338,9 @@ void Main::print_help(const char *p_binary) {
 	OS::get_singleton()->print("  --resolution <W>x<H>                         Request window resolution.\n");
 	OS::get_singleton()->print("  --position <X>,<Y>                           Request window position.\n");
 	OS::get_singleton()->print("  --low-dpi                                    Force low-DPI mode (macOS and Windows only).\n");
-	OS::get_singleton()->print("  --no-window                                  Disable window creation (Windows only). Useful together with --script.\n");
 	OS::get_singleton()->print("  --single-window                              Use a single window (no separate subwindows).\n");
 	OS::get_singleton()->print("  --tablet-driver                              Pen tablet input driver.\n");
 	OS::get_singleton()->print("\n");
-#endif
 
 	OS::get_singleton()->print("Debug options:\n");
 	OS::get_singleton()->print("  -d, --debug                                  Debug (local stdout debugger).\n");
@@ -352,7 +351,7 @@ void Main::print_help(const char *p_binary) {
 	OS::get_singleton()->print("  --gpu-abort                                  Abort on GPU errors (usually validation layer errors), may help see the problem if your system freezes.\n");
 #endif
 	OS::get_singleton()->print("  --remote-debug <uri>                         Remote debug (<protocol>://<host/IP>[:<port>], e.g. tcp://127.0.0.1:6007).\n");
-#if defined(DEBUG_ENABLED) && !defined(SERVER_ENABLED)
+#if defined(DEBUG_ENABLED)
 	OS::get_singleton()->print("  --debug-collisions                           Show collision shapes when running the scene.\n");
 	OS::get_singleton()->print("  --debug-navigation                           Show navigation polygons when running the scene.\n");
 #endif
@@ -728,7 +727,6 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
 				OS::get_singleton()->print("Missing video driver argument, aborting.\n");
 				goto error;
 			}
-#ifndef SERVER_ENABLED
 		} else if (I->get() == "-f" || I->get() == "--fullscreen") { // force fullscreen
 
 			init_fullscreen = true;
@@ -818,10 +816,11 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
 		} else if (I->get() == "--low-dpi") { // force low DPI (macOS only)
 
 			force_lowdpi = true;
-		} else if (I->get() == "--no-window") { // disable window creation (Windows only)
+		} else if (I->get() == "--headless") { // enable headless mode (no audio, no rendering).
+
+			audio_driver = "Dummy";
+			display_driver = "headless";
 
-			OS::get_singleton()->set_no_window_mode(true);
-#endif
 		} else if (I->get() == "--profiling") { // enable profiling
 
 			use_debug_profiler = true;