1 files changed, 76 insertions, 0 deletions
diff --git a/engines/sword2/sync.cpp b/engines/sword2/sync.cpp
new file mode 100644
index 0000000000..205e273873
--- /dev/null
+++ b/engines/sword2/sync.cpp
@@ -0,0 +1,76 @@
+/* Copyright (C) 1994-1998 Revolution Software Ltd.
+ * Copyright (C) 2003-2006 The ScummVM project
+ *
+ * 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.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#include "common/stdafx.h"
+#include "sword2/sword2.h"
+#include "sword2/defs.h"
+#include "sword2/logic.h"
+
+namespace Sword2 {
+
+/**
+ * Clear any syncs registered for this id. Call this just after the id has been
+ * processed. Theoretically there could be more than one sync waiting for us,
+ * so clear the lot.
+ */
+
+void Logic::clearSyncs(uint32 id) {
+	for (int i = 0; i < ARRAYSIZE(_syncList); i++) {
+		if (_syncList[i].id == id) {
+			debug(5, "removing sync %d for %d", i, id);
+			_syncList[i].id = 0;
+		}
+	}
+}
+
+void Logic::sendSync(uint32 id, uint32 sync) {
+	for (int i = 0; i < ARRAYSIZE(_syncList); i++) {
+		if (_syncList[i].id == 0) {
+			debug(5, "%d sends sync %d to %d", readVar(ID), sync, id);
+			_syncList[i].id = id;
+			_syncList[i].sync = sync;
+			return;
+		}
+	}
+
+	// The original code didn't even check for this condition, so maybe
+	// it should be a fatal error?
+
+	warning("No free sync slot");
+}
+
+/**
+ * Check for a sync waiting for this character. Called from fnAnim() to see if
+ * animation is to be finished. Returns an index into _syncList[], or -1.
+ */
+
+int Logic::getSync() {
+	uint32 id = readVar(ID);
+
+	for (int i = 0; i < ARRAYSIZE(_syncList); i++) {
+		if (_syncList[i].id == id)
+			return i;
+	}
+
+	return -1;
+}
+
+} // End of namespace Sword2