OpenTyrian: Invisible game buttons

project/jni/application/opentyrian/src/menus.c

@@ -16,6 +16,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
+#include <SDL_screenkeyboard.h>
 #include "config.h"
 #include "episodes.h"
 #include "fonthand.h"
@@ -31,6 +32,9 @@
 
 char episode_name[6][31], difficulty_name[7][21], gameplay_name[GAMEPLAY_NAME_COUNT][26];
 
+SDL_Rect screen_button_pos_destruct[SDL_ANDROID_SCREENKEYBOARD_BUTTON_NUM];
+bool screen_button_pos_destruct_initialized;
+
 bool
 select_menuitem_by_touch(int menu_top, int menu_spacing, int menu_item_count, int *current_item)
 {
@@ -51,6 +55,71 @@ select_menuitem_by_touch(int menu_top, int menu_spacing, int menu_item_count, in
 	return true;
 }
 
+void android_setup_screen_keys()
+{
+	int W = SDL_ListModes(NULL, 0)[0]->w;
+	int H = SDL_ListModes(NULL, 0)[0]->h;
+	SDL_Rect r;
+
+	// Rear gun mode button
+	r.x = 558 * W / 640;
+	r.y = 46 * H / 400;
+	r.w = 82 * W / 640;
+	r.h = 58 * H / 400;
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_1, &r);
+	SDL_ANDROID_SetScreenKeyboardButtonImagePos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_1, &r);
+
+	// Left sidekick button
+	r.x = 558 * W / 640;
+	r.y = 104 * H / 400;
+	r.w = 82 * W / 640;
+	r.h = 58 * H / 400;
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_3, &r);
+	SDL_ANDROID_SetScreenKeyboardButtonImagePos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_3, &r);
+
+	// Right sidekick button
+	r.x = 558 * W / 640;
+	r.y = 162 * H / 400;
+	r.w = 82 * W / 640;
+	r.h = 58 * H / 400;
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_2, &r);
+	SDL_ANDROID_SetScreenKeyboardButtonImagePos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_2, &r);
+
+	SDL_ANDROID_SetScreenKeyboardTransparency(SDL_ALPHA_TRANSPARENT);
+}
+
+void android_cleanup_screen_keys()
+{
+	if (!screen_button_pos_destruct_initialized)
+	{
+		screen_button_pos_destruct_initialized = true;
+		for (int i = 0; i < SDL_ANDROID_SCREENKEYBOARD_BUTTON_NUM; i++)
+		{
+			SDL_ANDROID_GetScreenKeyboardButtonPos(i, &screen_button_pos_destruct[i]);
+		}
+	}
+
+	SDL_Rect r = {0, 0, 0, 0}; // Hide all buttons
+	for (int i = 0; i < SDL_ANDROID_SCREENKEYBOARD_BUTTON_NUM; i++)
+	{
+		if (i != SDL_ANDROID_SCREENKEYBOARD_BUTTON_TEXT)
+			SDL_ANDROID_SetScreenKeyboardButtonPos(i, &r);
+	}
+
+	SDL_ANDROID_SetScreenKeyboardTransparency(192); // Text input button should not be totally transparent
+}
+
+void android_setup_screen_keys_destruct()
+{
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_0, &screen_button_pos_destruct[SDL_ANDROID_SCREENKEYBOARD_BUTTON_0]);
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_1, &screen_button_pos_destruct[SDL_ANDROID_SCREENKEYBOARD_BUTTON_1]);
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_2, &screen_button_pos_destruct[SDL_ANDROID_SCREENKEYBOARD_BUTTON_2]);
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_3, &screen_button_pos_destruct[SDL_ANDROID_SCREENKEYBOARD_BUTTON_3]);
+	SDL_ANDROID_SetScreenKeyboardButtonPos(SDL_ANDROID_SCREENKEYBOARD_BUTTON_DPAD, &screen_button_pos_destruct[SDL_ANDROID_SCREENKEYBOARD_BUTTON_DPAD]);
+
+	SDL_ANDROID_SetScreenKeyboardTransparency(192); // Text input button should not be totally transparent
+}
+
 bool select_gameplay( void )
 {
 	JE_loadPic(VGAScreen, 2, false);
@@ -310,4 +379,3 @@ bool select_difficulty( void )
 		}
 	}
 }
-

project/jni/application/opentyrian/src/menus.h

@@ -33,5 +33,9 @@ bool select_episode( void );
 bool select_difficulty( void );
 bool select_menuitem_by_touch(int menu_top, int menu_spacing, int menu_item_count, int *current_item);
 
+void android_setup_screen_keys();
+void android_cleanup_screen_keys();
+void android_setup_screen_keys_destruct();
+
 #endif /* MENUS_H */
 

project/jni/application/opentyrian/src/opentyr.c

@@ -316,6 +316,7 @@ int main( int argc, char *argv[] )
 	init_keyboard();
 	init_joysticks();
 	printf("assuming mouse detected\n"); // SDL can't tell us if there isn't one
+	android_cleanup_screen_keys();
 
 	if (xmas && (!dir_file_exists(data_dir(), "tyrianc.shp") || !dir_file_exists(data_dir(), "voicesc.snd")))
 	{
@@ -392,7 +393,9 @@ int main( int argc, char *argv[] )
 
 		if (loadDestruct)
 		{
+			android_setup_screen_keys_destruct();
 			JE_destructGame();
+			android_cleanup_screen_keys();
 			loadDestruct = false;
 		}
 		else

project/jni/application/opentyrian/src/tyrian2.c

@@ -724,11 +724,16 @@ start_level_first:
 	extraGame = false;
 
 	doNotSaveBackup = false;
+
+	android_cleanup_screen_keys();
+
 	JE_loadMap();
 
 	if (mainLevel == 0)  // if quit itemscreen
 		return;          // back to titlescreen
 
+	android_setup_screen_keys();
+
 	fade_song();
 
 	for (uint i = 0; i < COUNTOF(player); ++i)