Browse files with Left & Right

Added feature to browse a folder with Left & Right buttons to skip over
half a screens worth of files (13 files).

Signed-off-by: Mahyar Koshkouei <deltabeard@users.noreply.github.com>

source/main.c

@@ -347,6 +347,52 @@ int main(int argc, char **argv)
 				err_print("Unable to list directory.");
 		}
 
+		if((kDown & KEY_LEFT ||
+					((kHeld & KEY_LEFT) && (osGetTime() - mill > 500))) &&
+				fileNum > 0)
+		{
+			int skip = MAX_LIST / 2;
+
+			if(fileNum < skip)
+				skip = fileNum;
+
+			fileNum -= skip;
+
+			/* 26 is the maximum number of entries that can be printed */
+			if(fileMax - fileNum > 26 && from != 0)
+			{
+				from -= skip;
+				if(from < 0)
+					from = 0;
+			}
+
+			if(listDir(from, MAX_LIST, fileNum) < 0)
+				err_print("Unable to list directory.");
+		}
+
+		if((kDown & KEY_RIGHT ||
+					((kHeld & KEY_RIGHT) && (osGetTime() - mill > 500))) &&
+				fileNum < fileMax)
+		{
+			int skip = fileMax - fileNum;
+			
+			if(skip > MAX_LIST / 2)
+				skip = MAX_LIST / 2;
+
+			fileNum += skip;
+
+			if(fileNum >= MAX_LIST && fileMax - fileNum >= 0 &&
+					from < fileMax - MAX_LIST)
+			{
+				from += skip;
+				if(from > fileMax - MAX_LIST)
+					from = fileMax - MAX_LIST;
+			}
+
+			if(listDir(from, MAX_LIST, fileNum) < 0)
+				err_print("Unable to list directory.");
+		}
+
 		/*
 		 * Pressing B goes up a folder, as well as pressing A or R when ".."
 		 * is selected.

source/playback.c

@@ -210,8 +210,6 @@ void playFile(void* infoIn)
 		gfxFlushBuffers();
 		gspWaitForVBlank();
 
-		svcSleepThread(100 * 1000);
-
 		/* When the last buffer has finished playing, break. */
 		if(lastbuf == true && waveBuf[0].status == NDSP_WBUF_DONE &&
 				waveBuf[1].status == NDSP_WBUF_DONE)