- minor cleanup

src/engine/helper/HL_OsVersion.cpp

@@ -101,13 +101,16 @@ int iosVersion()
 #include <sys/select.h>
 #include <termios.h>
 #include <sys/ioctl.h>
+#include <fcntl.h>
 
 int _kbhit()
 {
+    /*
     static const int STDIN = 0;
     static bool initialized = false;
 
-    if (! initialized) {
+    if (! initialized)
+    {
         // Use termios to turn off line buffering
         termios term;
         tcgetattr(STDIN, &term);
@@ -119,7 +122,31 @@ int _kbhit()
 
     int bytesWaiting;
     ioctl(STDIN, FIONREAD, &bytesWaiting);
-    return bytesWaiting;
+    return bytesWaiting;*/
+    static const int STDIN_FILENO = 0;
+    struct termios oldt, newt;
+     int ch;
+     int oldf;
+
+     tcgetattr(STDIN_FILENO, &oldt);
+     newt = oldt;
+     newt.c_lflag &= ~(ICANON | ECHO);
+     tcsetattr(STDIN_FILENO, TCSANOW, &newt);
+     oldf = fcntl(STDIN_FILENO, F_GETFL, 0);
+     fcntl(STDIN_FILENO, F_SETFL, oldf | O_NONBLOCK);
+
+     ch = getchar();
+
+     tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
+     fcntl(STDIN_FILENO, F_SETFL, oldf);
+
+     if(ch != EOF)
+     {
+       ungetc(ch, stdin);
+       return 1;
+     }
+
+     return 0;
 }
 
 #endif