1 files changed, 129 insertions, 0 deletions
diff --git a/engines/tinsel/drives.cpp b/engines/tinsel/drives.cpp
new file mode 100644
index 0000000000..2e87eb1715
--- /dev/null
+++ b/engines/tinsel/drives.cpp
@@ -0,0 +1,129 @@
+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ * CD/drive handling functions
+ */
+
+#include "tinsel/drives.h"
+#include "tinsel/scene.h"
+#include "tinsel/tinsel.h"
+#include "tinsel/sched.h"
+#include "tinsel/strres.h"
+
+namespace Tinsel {
+
+static char currentCD = '1';
+static uint32 cdFlags[] = { fCd1, fCd2, fCd3, fCd4, fCd5, fCd6, fCd7, fCd8 };
+
+static bool bChangingCD = false;
+static char nextCD = '\0';
+
+
+void CdCD(CORO_PARAM) {
+	CORO_BEGIN_CONTEXT;
+	CORO_END_CONTEXT(_ctx);
+
+	CORO_BEGIN_CODE(_ctx);
+
+	while (bChangingCD) {
+		if (g_scheduler->getCurrentProcess()) {
+			// FIXME: CdCD gets passed a nullContext in RegisterGlobals() and
+			//        PrimeSceneHopper(), because I didn't know how to get a proper
+			//        context without converting the whole calling stack to CORO'd
+			//        functions. If these functions really get called while a CD
+			//        change is requested, this needs to be resolved.
+			if (coroParam == nullContext)
+				error("CdCD needs context!");
+			CORO_SLEEP(1);
+		} else
+			error("No current process in CdCD()!");
+	}
+
+	CORO_END_CODE;
+}
+
+int GetCurrentCD(void) {
+	// count from 1
+	return (currentCD - '1' + 1);
+}
+
+void SetCD(int flags) {
+	if (flags & cdFlags[currentCD - '1'])
+		return;
+
+	error("SetCD() problem");
+}
+
+int GetCD(int flags) {
+	int i;
+	char cd = '\0';
+
+	if (flags & cdFlags[currentCD - '1'])
+		return GetCurrentCD();
+
+	for (i = 0; i < 8; i++) {
+		if (flags & cdFlags[i]) {
+			cd = (char)(i + '1');
+			break;
+		}
+	}
+	assert(i != 8);
+
+	nextCD = cd;
+	return cd;
+}
+
+void DoCdChange(void) {
+	if (bChangingCD) {
+		_vm->_sound->closeSampleStream();
+		_vm->_sound->openSampleFiles();
+		ChangeLanguage(TextLanguage());
+		bChangingCD = false;
+	}
+}
+
+void SetNextCD(int cdNumber) {
+	assert(cdNumber == 1 || cdNumber == 2);
+
+	nextCD = (char)(cdNumber + '1' - 1);
+}
+
+bool GotoCD(void) {
+	// WORKAROUND: Somehow, CdDoChange() is called twice... Hopefully, this guard helps
+	if (currentCD == nextCD)
+		return false;
+
+	currentCD = nextCD;
+
+/*	if (bNoCD) 	{
+		strcpy(cdDirectory, hdDirectory);
+		cdLastBit[3] = currentCD;
+		strcat(cdDirectory, cdLastBit);
+	}
+*/
+	bChangingCD = true;
+
+	return true;
+}
+
+} // end of namespace Tinsel