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diff --git a/src/libretro/libretro.c b/src/libretro/libretro.c
index adb09c4..53fc5e2 100644
--- a/src/libretro/libretro.c
+++ b/src/libretro/libretro.c
@@ -68,6 +68,8 @@ int should_skip_frame = 0;
static int sample_rate = 22050;
static int stereo_enabled = true;
+static int rotate = false;
+
int game_index = -1;
unsigned short *gp2x_screen15;
int thread_done = 0;
@@ -296,6 +298,19 @@ static void update_variables(bool first_run)
else
stereo_enabled = true;
+ var.value = NULL;
+ var.key = "mame2000-rotate";
+
+ if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
+ {
+ if(strcmp(var.value, "enabled") == 0)
+ rotate = true;
+ else
+ rotate = false;
+ }
+ else
+ rotate = false;
+
/* Reinitialise frameskipping, if required */
if (!first_run &&
((frameskip_type != prev_frameskip_type)))
@@ -312,6 +327,7 @@ void retro_set_environment(retro_environment_t cb)
{ "mame2000-show_gameinfo", "Show Game Information; disabled|enabled" },
{ "mame2000-sample_rate", "Audio Rate (Restart); 22050|11025|22050|32000|44100" },
{ "mame2000-stereo", "Stereo (Restart); enabled|disabled" },
+ { "mame2000-rotate", "Rotate (Restart); disabled|enabled" },
{ NULL, NULL },
};
environ_cb = cb;
@@ -378,10 +394,17 @@ static void update_input(void)
key[KEY_1 + i] |= JS(i, START);
key[KEY_5 + i] |= JS(i, SELECT);
- joy_pressed[c++] = JS(i, LEFT);
- joy_pressed[c++] = JS(i, RIGHT);
- joy_pressed[c++] = JS(i, UP);
- joy_pressed[c++] = JS(i, DOWN);
+ if (rotate_controls) {
+ joy_pressed[c++] = JS(i, UP);
+ joy_pressed[c++] = JS(i, DOWN);
+ joy_pressed[c++] = JS(i, RIGHT);
+ joy_pressed[c++] = JS(i, LEFT);
+ } else {
+ joy_pressed[c++] = JS(i, LEFT);
+ joy_pressed[c++] = JS(i, RIGHT);
+ joy_pressed[c++] = JS(i, UP);
+ joy_pressed[c++] = JS(i, DOWN);
+ }
joy_pressed[c++] = JS(i, B);
joy_pressed[c++] = JS(i, A);
joy_pressed[c++] = JS(i, Y);
@@ -911,6 +934,11 @@ bool retro_load_game(const struct retro_game_info *info)
options.samplerate = sample_rate;
usestereo = stereo_enabled;
+ if (rotate) {
+ options.ror = 1;
+ rotate_controls = 1;
+ }
+
/* This is needed so emulated YM3526/YM3812 chips are used instead on physical ones. */
options.use_emulated_ym3812 = 1;
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