[GTK3] Implement rumble for controller one

Now we store references to all initialized controllers but
use only controller #0 for now.

gtk3/main.c

@@ -64,10 +64,6 @@ typedef struct GuiData {
 	volatile bool stopping;
 	volatile bool stopped;
 
-	// Input
-	SDL_GameController *controller;
-	uint8_t pressed_buttons;
-
 	// GTK pointers
 	GtkApplication *main_application;
 	GtkBuilder *builder;
@@ -122,6 +118,14 @@ typedef struct GuiData {
 	bool rewind_paused;
 	bool turbo_down;
 	double clock_mutliplier;
+
+	// Input
+	uint8_t pressed_buttons;
+	struct Controller_t {
+		SDL_GameController *controller;
+		SDL_Haptic *haptic;
+	} *controllers;
+	unsigned controller_count;
 } GuiData;
 
 // Initialize the GuiData
@@ -176,8 +180,8 @@ typedef enum {
 
 static unsigned key_map[] = {
 	[INPUT_UP]     = GDK_KEY_w,
-	[INPUT_DOWN]   = GDK_KEY_a,
+	[INPUT_LEFT]   = GDK_KEY_a,
-	[INPUT_LEFT]   = GDK_KEY_s,
+	[INPUT_DOWN]   = GDK_KEY_s,
 	[INPUT_RIGHT]  = GDK_KEY_d,
 
 	[INPUT_A]      = GDK_KEY_l,
@@ -299,6 +303,21 @@ static void palette_color_data_func(GtkTreeViewColumn *col, GtkCellRenderer *ren
 	g_free(color_string);
 }
 
+static const char* get_sdl_joystick_power_level_name(SDL_JoystickPowerLevel level) {
+	switch (level) {
+		case SDL_JOYSTICK_POWER_EMPTY:  return "Empty";
+		case SDL_JOYSTICK_POWER_LOW:    return "Low";
+		case SDL_JOYSTICK_POWER_MEDIUM: return "Medium";
+		case SDL_JOYSTICK_POWER_FULL:   return "Full";
+		case SDL_JOYSTICK_POWER_WIRED:  return "Wired";
+		case SDL_JOYSTICK_POWER_MAX:    return "Max";
+
+		case SDL_JOYSTICK_POWER_UNKNOWN:
+		default:
+			return "Unknown";
+	}
+}
+
 // This function gets called after the parsing of the commandline options has occurred.
 static gint handle_local_options(GApplication *app, GVariantDict *options, gpointer null_ptr) {
 	guint32 count;
@@ -421,7 +440,6 @@ gboolean test_gl_support(void) {
 	return result;
 }
 
-
 static gboolean init_controllers(void) {
 	SDL_version compiled;
 	SDL_version linked;
@@ -435,6 +453,10 @@ static gboolean init_controllers(void) {
 		return false;
 	}
 
+	if (SDL_InitSubSystem(SDL_INIT_HAPTIC) < 0) {
+		g_warning("Failed to initialize haptic feedback support: %s", SDL_GetError());
+	}
+
 	SDL_QuitSubSystem(SDL_INIT_EVENTS);
 	SDL_GameControllerEventState(SDL_ENABLE);
 
@@ -455,30 +477,33 @@ static gboolean init_controllers(void) {
 
 	if (error != NULL) g_clear_error(&error);
 
-	g_message("Found %d controllers", SDL_NumJoysticks());
+	g_message("Number of found controllers: %d", SDL_NumJoysticks());
 
-	SDL_GameController *controller = NULL;
+	// In the “worst” case all joysticks are valid game controllers
-	for (int i = 0; i < SDL_NumJoysticks(); ++i) {
+	gui_data.controllers = g_malloc0(sizeof(struct Controller_t) * SDL_NumJoysticks());
-		SDL_GameController *controller = SDL_GameControllerOpen(i);
-
-		if (controller) {
-			g_message("Found controller (%s)", SDL_GameControllerName(controller));
-
-			char *mapping = SDL_GameControllerMapping(controller);
-			g_message("Controller is mapped as \"%s\".", mapping);
-			SDL_free(mapping);
-
-			SDL_GameControllerClose(controller);
-		}
-	}
 
 	// Open the first available controller
 	for (int i = 0; i < SDL_NumJoysticks(); ++i) {
 		if (SDL_IsGameController(i)) {
-			gui_data.controller = SDL_GameControllerOpen(i);
+			struct Controller_t *s = &gui_data.controllers[i];
-			if (gui_data.controller) {
+			s->controller = SDL_GameControllerOpen(i);
-				g_message("Using controller (%s)", SDL_GameControllerName(gui_data.controller));
+
-				break;
+			if (s->controller) {
+				SDL_Joystick *joystick = SDL_GameControllerGetJoystick(s->controller);
+				SDL_JoystickPowerLevel power_level = SDL_JoystickCurrentPowerLevel(joystick);
+
+				s->haptic = SDL_HapticOpenFromJoystick(joystick);
+
+				if (s->haptic) {
+					SDL_HapticRumbleInit(s->haptic);
+				}
+
+				char guid_str[33];
+				SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
+				SDL_JoystickGetGUIDString(guid, guid_str, sizeof(guid_str));
+
+				g_message("Controller #%u (%s): %s; Power level: %s", i, guid_str, SDL_GameControllerName(s->controller), get_sdl_joystick_power_level_name(power_level));
+				gui_data.controller_count++;
 			}
 			else {
 				g_warning("Could not open controller %i: %s", i, SDL_GetError());
@@ -556,6 +581,22 @@ static void gb_audio_callback(GB_gameboy_t *gb, GB_sample_t *sample) {
 	GB_audio_queue_sample(sample);
 }
 
+static void rumble_callback(GB_gameboy_t *gb, double amp) {
+	if (gui_data.controllers == NULL || gui_data.controller_count == 0) return;
+
+	// TODO
+	struct Controller_t *s = &gui_data.controllers[0];
+
+	if (s->haptic) {
+		if (amp > 0.0) {
+			SDL_HapticRumblePlay(s->haptic, amp, 100.0);
+		}
+		else {
+			SDL_HapticRumbleStop(s->haptic);
+		}
+	}
+}
+
 static void clear_sidebar(void) {
 	GtkTextView *sidebar_output = builder_get(GTK_TEXT_VIEW, "console_sidebar_output");
 	GtkTextBuffer *sidebar_output_text_buf = gtk_text_view_get_buffer(sidebar_output);
@@ -1188,9 +1229,9 @@ static void handle_events(GB_gameboy_t *gb) {
 
 	uint8_t controller_state = 0;
 
-	if (gui_data.controller) {
+	if (gui_data.controllers && gui_data.controllers[0].controller) {
-		int16_t x_axis = SDL_GameControllerGetAxis(gui_data.controller, SDL_CONTROLLER_AXIS_LEFTX);
+		int16_t x_axis = SDL_GameControllerGetAxis(gui_data.controllers[0].controller, SDL_CONTROLLER_AXIS_LEFTX);
-		int16_t y_axis = SDL_GameControllerGetAxis(gui_data.controller, SDL_CONTROLLER_AXIS_LEFTY);
+		int16_t y_axis = SDL_GameControllerGetAxis(gui_data.controllers[0].controller, SDL_CONTROLLER_AXIS_LEFTY);
 
 		if (x_axis >= JOYSTICK_HIGH) {
 			controller_state |= BUTTON_MASK_RIGHT;
@@ -1206,14 +1247,14 @@ static void handle_events(GB_gameboy_t *gb) {
 			controller_state |= BUTTON_MASK_UP;
 		}
 
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_DPAD_RIGHT)) controller_state |= BUTTON_MASK_RIGHT;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_DPAD_RIGHT)) controller_state |= BUTTON_MASK_RIGHT;
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_DPAD_LEFT))  controller_state |= BUTTON_MASK_LEFT;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_DPAD_LEFT))  controller_state |= BUTTON_MASK_LEFT;
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_DPAD_UP))    controller_state |= BUTTON_MASK_UP;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_DPAD_UP))    controller_state |= BUTTON_MASK_UP;
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_DPAD_DOWN))  controller_state |= BUTTON_MASK_DOWN;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_DPAD_DOWN))  controller_state |= BUTTON_MASK_DOWN;
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_A))          controller_state |= BUTTON_MASK_A;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_A))          controller_state |= BUTTON_MASK_A;
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_B))          controller_state |= BUTTON_MASK_B;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_B))          controller_state |= BUTTON_MASK_B;
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_BACK))       controller_state |= BUTTON_MASK_SELECT;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_BACK))       controller_state |= BUTTON_MASK_SELECT;
-		if (SDL_GameControllerGetButton(gui_data.controller, SDL_CONTROLLER_BUTTON_START))      controller_state |= BUTTON_MASK_START;
+		if (SDL_GameControllerGetButton(gui_data.controllers[0].controller, SDL_CONTROLLER_BUTTON_START))      controller_state |= BUTTON_MASK_START;
 	}
 
 	GB_set_key_state(gb, GB_KEY_RIGHT,  (gui_data.pressed_buttons & BUTTON_MASK_RIGHT)  | (controller_state & BUTTON_MASK_RIGHT));
@@ -1306,6 +1347,9 @@ static void init(void) {
 	GB_set_log_callback(&gb, console_log);
 	GB_set_boot_rom_load_callback(&gb, load_boot_rom);
 
+	GB_set_rumble_callback(&gb, rumble_callback);
+	GB_set_rumble_mode(&gb, GB_RUMBLE_CARTRIDGE_ONLY); // TODO
+
 	if (get_display_border_mode() <= GB_BORDER_ALWAYS) {
 		GB_set_border_mode(&gb, get_display_border_mode());
 	}
@@ -1465,6 +1509,13 @@ static void run(void) {
 static void quit(void) {
 	stop();
 
+	for (unsigned i = 0; i < gui_data.controller_count; i++) {
+		struct Controller_t *s = &gui_data.controllers[i];
+
+		SDL_HapticClose(s->haptic);
+		SDL_GameControllerClose(s->controller);
+	}
+
 	// Quit our application properly.
 	// This fires the “shutdown” signal.
 	g_application_quit(G_APPLICATION(gui_data.main_application));

gtk3/resources/ui/window.ui

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.1 
+<!-- Generated with glade 3.22.2 
 
 The MIT License (MIT)
 
@@ -317,7 +317,7 @@ Maximilian Mader https://github.com/max-m</property>
     <property name="can_focus">False</property>
     <property name="title" translatable="yes">Preferences</property>
     <property name="resizable">False</property>
-    <child>
+    <child type="titlebar">
       <placeholder/>
     </child>
     <child>
@@ -555,7 +555,6 @@ Maximilian Mader https://github.com/max-m</property>
             <property name="margin_top">16</property>
             <property name="margin_bottom">16</property>
             <property name="orientation">vertical</property>
-
             <child>
               <object class="GtkLabel">
                 <property name="visible">True</property>
@@ -598,7 +597,6 @@ Maximilian Mader https://github.com/max-m</property>
                 <property name="position">1</property>
               </packing>
             </child>
-
             <child>
               <object class="GtkLabel">
                 <property name="visible">True</property>
@@ -632,7 +630,6 @@ Maximilian Mader https://github.com/max-m</property>
                 <property name="position">3</property>
               </packing>
             </child>
-
             <child>
               <object class="GtkLabel">
                 <property name="visible">True</property>
@@ -664,7 +661,6 @@ Maximilian Mader https://github.com/max-m</property>
                 <property name="position">5</property>
               </packing>
             </child>
-
             <child>
               <object class="GtkLabel">
                 <property name="visible">True</property>
@@ -697,7 +693,6 @@ Maximilian Mader https://github.com/max-m</property>
                 <property name="position">7</property>
               </packing>
             </child>
-
             <child>
               <object class="GtkLabel">
                 <property name="visible">True</property>
@@ -729,7 +724,6 @@ Maximilian Mader https://github.com/max-m</property>
                 <property name="position">9</property>
               </packing>
             </child>
-
             <child>
               <object class="GtkCheckButton" id="integer_scaling_toggle">
                 <property name="label" translatable="yes">Use Integer Scaling</property>
@@ -747,7 +741,6 @@ Maximilian Mader https://github.com/max-m</property>
                 <property name="position">10</property>
               </packing>
             </child>
-
             <child>
               <object class="GtkCheckButton" id="aspect_ratio_toggle">
                 <property name="label" translatable="yes">Keep Aspect Ratio</property>
@@ -765,7 +758,6 @@ Maximilian Mader https://github.com/max-m</property>
                 <property name="position">11</property>
               </packing>
             </child>
-
             <child>
               <object class="GtkLabel" id="menubar_override_selector_label">
                 <property name="can_focus">False</property>
@@ -799,7 +791,6 @@ Maximilian Mader https://github.com/max-m</property>
             <property name="position">1</property>
           </packing>
         </child>
-
         <child type="tab">
           <object class="GtkBox">
             <property name="visible">True</property>
@@ -983,6 +974,7 @@ Maximilian Mader https://github.com/max-m</property>
                     <property name="margin_left">5</property>
                     <property name="margin_right">5</property>
                     <property name="active">0</property>
+                    <property name="active_id">0</property>
                     <items>
                       <item id="0" translatable="yes">Player 1</item>
                       <item id="1" translatable="yes">Player 2</item>
@@ -1293,7 +1285,7 @@ Maximilian Mader https://github.com/max-m</property>
     <property name="can_focus">False</property>
     <property name="title" translatable="yes">VRAM Viewer</property>
     <property name="resizable">False</property>
-    <child>
+    <child type="titlebar">
       <placeholder/>
     </child>
     <child>