refactor all common parts and games

common/util/dprintf.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <stdarg.h>
+#include <stddef.h>
+
+#ifdef __GNUC__
+#define DPRINTF_CHK __attribute__(( format(printf, 1, 2) ))
+#else
+#define DPRINTF_CHK
+#endif
+
+#ifndef NDEBUG
+void dprintf(const char *fmt, ...) DPRINTF_CHK;
+void dprintfv(const char *fmt, va_list ap);
+void dwprintf(const wchar_t *fmt, ...);
+void dwprintfv(const wchar_t *fmt, va_list ap);
+#else
+#define dprintf(...)
+#define dprintfv(fmt, ap)
+#define dwprintf(...)
+#define dwprintfv(fmt, ap)
+#endif