From d9eea627fb916c099e908a9178acd5093e97bfef Mon Sep 17 00:00:00 2001
From: neonloop
Date: Tue, 10 Aug 2021 00:45:20 +0000
Subject: Hides state menus if states are unsupported

---
 core.c | 4 ++++
 core.h | 1 +
 main.c | 4 ++--
 menu.c | 9 +++++++--
 4 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/core.c b/core.c
index d669b64..bb37aa8 100644
--- a/core.c
+++ b/core.c
@@ -110,6 +110,10 @@ void sram_read(void) {
 	fclose(sram_file);
 }
 
+bool state_allowed(void) {
+	return current_core.retro_serialize_size() > 0;
+}
+
 void state_file_name(char *name, size_t size, int slot) {
 	char extension[5] = {0};
 
diff --git a/core.h b/core.h
index 67f46c9..bd4ded9 100644
--- a/core.h
+++ b/core.h
@@ -41,6 +41,7 @@ void config_file_name(char *buf, size_t len, int is_game);
 void sram_read(void);
 void sram_write(void);
 
+bool state_allowed(void);
 void state_file_name(char *name, size_t size, int slot);
 int state_read(void);
 int state_write(void);
diff --git a/main.c b/main.c
index 5fabd58..d399f7a 100644
--- a/main.c
+++ b/main.c
@@ -207,7 +207,7 @@ void handle_emu_action(emu_action action)
 		if (mmenu) {
 			ShowMenu_t ShowMenu = (ShowMenu_t)dlsym(mmenu, "ShowMenu");
 			SDL_Surface *screen = SDL_GetVideoSurface();
-			MenuReturnStatus status = ShowMenu(content_path, save_template_path, screen, kMenuEventKeyDown);
+			MenuReturnStatus status = ShowMenu(content_path, state_allowed() ? save_template_path : NULL, screen, kMenuEventKeyDown);
 
 			if (status==kStatusExitGame) {
 				should_quit = 1;
@@ -384,7 +384,7 @@ int main(int argc, char **argv) {
 		if (ResumeSlot) resume_slot = ResumeSlot();
 	}
 
-	if (resume_slot!=-1) {
+	if (state_allowed() && resume_slot!=-1) {
 		state_slot = resume_slot;
 		state_read();
 		resume_slot = -1;
diff --git a/menu.c b/menu.c
index ed10687..e691f16 100644
--- a/menu.c
+++ b/menu.c
@@ -392,9 +392,14 @@ void menu_loop(void)
 
 	me_enable(e_menu_main, MA_MAIN_CORE_OPTS, core_options.visible_len > 0);
 
+	me_enable(e_menu_main, MA_MAIN_SAVE_STATE, state_allowed());
+	me_enable(e_menu_main, MA_MAIN_LOAD_STATE, state_allowed());
+
 #ifdef MMENU
-	me_enable(e_menu_main, MA_MAIN_SAVE_STATE, mmenu == NULL);
-	me_enable(e_menu_main, MA_MAIN_LOAD_STATE, mmenu == NULL);
+	if (state_allowed()) {
+		me_enable(e_menu_main, MA_MAIN_SAVE_STATE, mmenu == NULL);
+		me_enable(e_menu_main, MA_MAIN_LOAD_STATE, mmenu == NULL);
+	}
 #endif
 
 	memcpy(g_menubg_ptr, g_menuscreen_ptr, g_menuscreen_h * g_menuscreen_pp * sizeof(uint16_t));
-- 
cgit v1.2.3