Internal API for controller menu navigation

fragglet · Dec 1, 2024 · 6efadf8 · 6efadf8
1 parent ff15ecf
commit 6efadf8
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diff --git a/src/sdl/controller.c b/src/sdl/controller.c
@@ -34,6 +34,7 @@ int controller_bindings[NUM_KEYS] = {
 
 static int button_to_key[SDL_CONTROLLER_BUTTON_MAX];
 
+static enum menukey last_menukey = MENUKEY_NONE;
 static SDL_GameController *controller = NULL;
 static SDL_JoystickID controller_id;
 
@@ -52,6 +53,30 @@ static void RecalculateButtonMapping(void)
 	}
 }
 
+static void CheckForMenuKeypress(SDL_ControllerButtonEvent *event)
+{
+	switch (event->button) {
+	case SDL_CONTROLLER_BUTTON_DPAD_DOWN:
+		last_menukey = MENUKEY_DOWN;
+		break;
+	case SDL_CONTROLLER_BUTTON_DPAD_UP:
+		last_menukey = MENUKEY_UP;
+		break;
+	case SDL_CONTROLLER_BUTTON_BACK:
+	case SDL_CONTROLLER_BUTTON_X:
+	case SDL_CONTROLLER_BUTTON_Y:
+		last_menukey = MENUKEY_BACK;
+		break;
+	case SDL_CONTROLLER_BUTTON_START:
+	case SDL_CONTROLLER_BUTTON_A:
+	case SDL_CONTROLLER_BUTTON_B:
+		last_menukey = MENUKEY_START;
+		break;
+	default:
+		break;
+	}
+}
+
 void Vid_ControllerButtonDown(SDL_ControllerButtonEvent *event)
 {
 	int gamekey;
@@ -62,6 +87,7 @@ void Vid_ControllerButtonDown(SDL_ControllerButtonEvent *event)
 	if (event->button >= SDL_CONTROLLER_BUTTON_MAX) {
 		return;
 	}
+	CheckForMenuKeypress(event);
 	gamekey = button_to_key[event->button];
 	if (gamekey != KEY_UNKNOWN) {
 		keysdown[gamekey] |= KEYDOWN_GAMEPAD | KEYDOWN_WAS_PRESSED;
@@ -111,3 +137,15 @@ void Vid_ControllerInit(void)
 	// SDL_GameControllerAddMappingsFromFile("gamecontrollerdb.txt");
 	RecalculateButtonMapping();
 }
+
+enum menukey Vid_ControllerMenuKey(void)
+{
+	enum menukey result = last_menukey;
+	last_menukey = MENUKEY_NONE;
+	return result;
+}
+
+bool Vid_HaveController(void)
+{
+	return controller != NULL;
+}
diff --git a/src/video.h b/src/video.h
@@ -37,6 +37,14 @@ enum gamekey {
 	NUM_KEYS,
 };
 
+enum menukey {
+	MENUKEY_NONE,
+	MENUKEY_START,
+	MENUKEY_BACK,
+	MENUKEY_UP,
+	MENUKEY_DOWN,
+};
+
 // Which keys are currently down or have been pressed since the last call
 // to Vid_GetGameKeys:
 
@@ -132,4 +140,7 @@ extern void Vid_TouchButtonPress(const struct touch_button *b, bool pressed);
 extern void Vid_ShowTouchGameControls(void);
 extern void Vid_ShowTouchKeys(const char *keys);
 
+enum menukey Vid_ControllerMenuKey(void);
+bool Vid_HaveController(void);
+
 #endif