1 files changed, 56 insertions, 0 deletions
diff --git a/engines/sludge/timing.cpp b/engines/sludge/timing.cpp
new file mode 100644
index 0000000000..a1dcba0882
--- /dev/null
+++ b/engines/sludge/timing.cpp
@@ -0,0 +1,56 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+#if 0
+#include <SDL/SDL.h>
+#endif
+
+int desiredfps = 300;               //holds desired frames per second
+Uint32 starttime, endtime;
+Uint32 desired_frame_time;
+
+void Init_Timer(void) {
+	desired_frame_time = 1000 / desiredfps;
+	starttime = SDL_GetTicks();
+}
+
+void Init_Special_Timer(int t) {
+	desired_frame_time = 1000 / t;
+	starttime = SDL_GetTicks();
+}
+
+void Wait_Frame(void) {
+	static Uint32 addNextTime = 0;
+	Uint32 timetaken;
+
+	for (;;) {
+		endtime = SDL_GetTicks();
+		timetaken = addNextTime + endtime - starttime;
+		if (timetaken >= desired_frame_time) break;
+		SDL_Delay(1);
+	}
+
+	addNextTime = timetaken - desired_frame_time;
+	if (addNextTime > desired_frame_time) addNextTime = desired_frame_time;
+
+	starttime = endtime;
+}
+