fix rand

gframe/game.cpp

@@ -90,8 +90,10 @@ bool Game::Initialize() {
 		size_t count = skins.size();
 		if(count > 0) {
 			int index = -1;
-			if(gameConf.skin_index < 0)
-				index = rand() % count;
+			if(gameConf.skin_index < 0) {
+				std::random_device rd;
+				index = rd() % count;
+			}
 			else if((size_t)gameConf.skin_index <= skins.size())
 				index = skins.size() - gameConf.skin_index; // reverse index
 			if(index >= 0)

gframe/image_manager.cpp

@@ -71,8 +71,9 @@ irr::video::ITexture* ImageManager::GetRandomImage(int image_type) {
 		return NULL;
 	char ImageName[1024];
 	wchar_t fname[1024];
+	std::random_device rd;
 	if(saved_image_id[image_type] == -1)
-		saved_image_id[image_type] = rand() % count;
+		saved_image_id[image_type] = rd() % count;
 	int image_id = saved_image_id[image_type];
 	auto name = ImageList[image_type][image_id].c_str();
 	myswprintf(fname, L"./textures/%ls", name);
@@ -85,8 +86,9 @@ irr::video::ITexture* ImageManager::GetRandomImage(int image_type, s32 width, s3
 		return NULL;
 	char ImageName[1024];
 	wchar_t fname[1024];
+	std::random_device rd;
 	if(saved_image_id[image_type] == -1)
-		saved_image_id[image_type] = rand() % count;
+		saved_image_id[image_type] = rd() % count;
 	int image_id = saved_image_id[image_type];
 	auto name = ImageList[image_type][image_id].c_str();
 	myswprintf(fname, L"./textures/%ls", name);