模擬器 - RetroArch - 如何讓Miyoo支援SaveState/LoadState按鍵

~/.retroarch/retroarch.cfg

input_load_state_btn = "48"
input_save_state_btn = "49"

P.S. SDLK_0=48, SDLK_1=49

input/drivers_joypad/sdl_dingux_joypad.c

diff --git a/input/drivers_joypad/sdl_dingux_joypad.c b/input/drivers_joypad/sdl_dingux_joypad.c
index 0492a7a..53d6ce6 100644
--- a/input/drivers_joypad/sdl_dingux_joypad.c
+++ b/input/drivers_joypad/sdl_dingux_joypad.c
@@ -122,6 +122,8 @@
 #else
 #define SDL_DINGUX_SDLK_MENU   SDLK_HOME
 #endif
+#define SDL_DINGUX_SDLK_SAVE   SDLK_1
+#define SDL_DINGUX_SDLK_LOAD   SDLK_0
 
 #if defined(HAVE_LIBSHAKE)
 /* 5 ms period == 200 Hz
@@ -165,6 +167,11 @@ typedef struct
 #if defined(SDL_DINGUX_HAS_MENU_TOGGLE)
    bool menu_toggle;
 #endif
+
+   struct {
+      bool load;
+      bool save;
+   } state;
 } dingux_joypad_t;
 
 #if defined(SDL_DINGUX_HAS_MENU_TOGGLE)
@@ -494,6 +501,13 @@ static int32_t sdl_dingux_joypad_button(unsigned port, uint16_t joykey)
    if (port != 0)
       return 0;
 
+   if (joykey == 48) { // SDLK_0
+       return joypad->state.load;
+   }
+   else if (joykey == 49) { // SDLK_1
+       return joypad->state.save;
+   }
+
    return (joypad->pad_state & (1 << joykey));
 }
 
@@ -580,6 +594,7 @@ static int16_t sdl_dingux_joypad_state(
    if (port_idx != 0)
       return 0;
 
+
    for (i = 0; i < RARCH_FIRST_CUSTOM_BIND; i++)
    {
       /* Auto-binds are per joypad, not per user. */
@@ -631,6 +646,12 @@ static void sdl_dingux_joypad_poll(void)
 			case SDL_KEYDOWN:
             switch (event.key.keysym.sym)
             {
+               case SDL_DINGUX_SDLK_LOAD:
+                  joypad->state.load = true;
+                  break;
+               case SDL_DINGUX_SDLK_SAVE:
+                  joypad->state.save = true;
+                  break;
                case SDL_DINGUX_SDLK_X:
                   BIT16_SET(joypad->pad_state, RETRO_DEVICE_ID_JOYPAD_X);
                   break;
@@ -692,6 +713,12 @@ static void sdl_dingux_joypad_poll(void)
 			case SDL_KEYUP:
             switch (event.key.keysym.sym)
             {
+               case SDL_DINGUX_SDLK_LOAD:
+                  joypad->state.load = false;
+                  break;
+               case SDL_DINGUX_SDLK_SAVE:
+                  joypad->state.save = false;
+                  break;
                case SDL_DINGUX_SDLK_X:
                   BIT16_CLEAR(joypad->pad_state, RETRO_DEVICE_ID_JOYPAD_X);
                   break;