From 593aec681d138f7106b034530f5b5eb89643bce1 Mon Sep 17 00:00:00 2001
From: Matthew Hoops
Date: Mon, 5 Sep 2011 16:46:00 -0400
Subject: PEGASUS: Restructure remaining MMShell code into the base code

MMTimeValue has been removed, as Common::Timestamp will just be used instead
---
 engines/pegasus/util.cpp | 100 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100755 engines/pegasus/util.cpp

(limited to 'engines/pegasus/util.cpp')

diff --git a/engines/pegasus/util.cpp b/engines/pegasus/util.cpp
new file mode 100755
index 0000000000..a4c9a351c2
--- /dev/null
+++ b/engines/pegasus/util.cpp
@@ -0,0 +1,100 @@
+/* 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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-1997 Presto Studios, Inc.
+ *
+ * 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.
+ *
+ */
+
+#include "common/random.h"
+#include "common/util.h"
+
+#include "pegasus/util.h"
+
+namespace Pegasus {
+
+IDObject::IDObject(const tMM32BitID id) {
+	_objectID = id;
+}
+
+IDObject::~IDObject() {
+}
+
+tMM32BitID IDObject::getObjectID() const {
+	return _objectID;
+}
+
+int operator==(const IDObject &arg1, const IDObject &arg2) {
+	return arg1.getObjectID() == arg2.getObjectID();
+}
+
+int operator!=(const IDObject &arg1, const IDObject &arg2) {
+	return arg1.getObjectID() != arg2.getObjectID();
+}
+
+FunctionPtr::FunctionPtr() {
+	_function = 0;
+	_functionArg = 0;
+}
+
+FunctionPtr::~FunctionPtr() {
+}
+
+void FunctionPtr::setFunctionPtr(tFunctionPtr function, void *functionArg) {
+	_function = function;
+	_functionArg = functionArg;
+}
+
+void FunctionPtr::callFunction() {
+	if (_function != 0)
+		(*_function)(this, _functionArg);
+}
+
+inline int32 pegasusRound(const int32 a, const int32 b) {
+	if (b < 0)
+		if (a < 0)
+			return -((a - (-b >> 1)) / -b);
+		else
+			return -((a + (-b >> 1)) / -b);
+	else
+		if (a < 0)
+			return (a - (b >> 1)) / b;
+		else
+			return (a + (b >> 1)) / b;
+}
+
+int32 linearInterp(const int32 start1, const int32 stop1, const int32 current1, const int32 start2, const int32 stop2) {
+	if (start2 == stop2)
+		return start2;
+	else
+		return start2 + pegasusRound((current1 - start1) * (stop2 - start2), (stop1 - start1));
+}
+
+void shuffleArray(int32 *arr, int32 count, Common::RandomSource &random) {	
+	if (count > 1) {
+		for (int32 i = 1; i < count; ++i) {
+			int32 j = random.getRandomNumber(i);
+			if (j != i)
+				SWAP(arr[i], arr[j]);
+		}
+	}
+}
+
+} // End of namespace Pegasus
-- 
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