1 files changed, 135 insertions, 0 deletions
diff --git a/engines/pegasus/util.h b/engines/pegasus/util.h
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+++ b/engines/pegasus/util.h
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+/* 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.
+ *
+ */
+
+#ifndef PEGASUS_UTIL_H
+#define PEGASUS_UTIL_H
+
+#include "common/stream.h"
+
+#include "pegasus/types.h"
+
+namespace Common {
+	class RandomSource;
+}
+
+namespace Pegasus {
+
+class IDObject {
+public:
+	IDObject(const int32 id);
+	~IDObject();
+	
+	int32 getObjectID() const;
+
+private:
+	int32 _objectID;
+};
+
+class FunctionPtr;
+
+typedef void (*tFunctionPtr)(FunctionPtr *theFunction, void *functionArg);
+
+class FunctionPtr {
+public:
+	FunctionPtr();
+	virtual ~FunctionPtr();
+	
+	void setFunctionPtr(tFunctionPtr function, void *functionArg);
+
+protected:
+	void callFunction();
+	
+	tFunctionPtr _function;
+	void *_functionArg;
+};
+
+#define NUM_FLAGS (sizeof(Unit) * 8)
+#define BIT_INDEX_SHIFT (sizeof(Unit) + 2 - (sizeof(Unit)) / 3)
+#define BIT_INDEX_MASK (NUM_FLAGS - 1)
+
+template <typename Unit, uint32 kNumFlags>
+class FlagsArray {
+public:
+	FlagsArray() { clearAllFlags(); }
+	void clearAllFlags() { memset(_flags, 0, sizeof(_flags)); }
+	void setAllFlags() { memset(_flags, ~((Unit)0), sizeof(_flags)); }
+	void setFlag(uint32 flag) { _flags[flag >> BIT_INDEX_SHIFT] |= 1 << (flag & BIT_INDEX_MASK); }
+	void clearFlag(uint32 flag) { _flags[flag >> BIT_INDEX_SHIFT] &= ~(1 << (flag & BIT_INDEX_MASK)); }
+	void setFlag(uint32 flag, bool val) { if (val) setFlag(flag); else clearFlag(flag); }
+	bool getFlag(uint32 flag) { return (_flags[flag >> BIT_INDEX_SHIFT] & (1 << (flag & BIT_INDEX_MASK))) != 0; }
+	bool anyFlagSet() {
+		for (uint32 i = 0; i < sizeof(_flags); i++)
+			if (_flags[i] != 0)
+				return true;
+		return false;
+	}
+
+	void readFromStream(Common::ReadStream *stream) {
+		// Shortcut
+		if (sizeof(Unit) == 1) {
+			stream->read(_flags, sizeof(_flags));
+			return;
+		}
+
+		for (uint32 i = 0; i < ARRAYSIZE(_flags); i++) {
+			if (sizeof(Unit) == 2)
+				_flags[i] = stream->readUint16BE();
+			else /* if (sizeof(Unit) == 4) */
+				_flags[i] = stream->readUint32BE();
+		}
+	}
+
+	void writeToStream(Common::WriteStream *stream) {
+		// Shortcut
+		if (sizeof(Unit) == 1) {
+			stream->write(_flags, sizeof(_flags));
+			return;
+		}
+
+		for (uint32 i = 0; i < ARRAYSIZE(_flags); i++) {
+			if (sizeof(Unit) == 2)
+				stream->writeUint16BE(_flags[i]);
+			else /* if (sizeof(Unit) == 4) */
+				stream->writeUint32BE(_flags[i]);
+		}
+	}
+
+private:
+	Unit _flags[(kNumFlags - 1) / NUM_FLAGS + 1];
+};
+
+#undef NUM_FLAGS
+#undef BIT_INDEX_SHIFT
+#undef BIT_INDEX_MASK
+
+int32 linearInterp(const int32 start1, const int32 stop1, const int32 current1, const int32 start2, const int32 stop2);
+
+int32 pegasusRound(const int32 a, const int32 b);
+
+uint32 tickCount();
+
+} // End of namespace Pegasus
+
+#endif