ILLUSIONS: More work on the Camera class

- Add fixed point code (untested and probably wrong)

1 files changed, 45 insertions, 0 deletions

diff --git a/engines/illusions/fixedpoint.h b/engines/illusions/fixedpoint.h
new file mode 100644
index 0000000000..a14eb8b51b
--- /dev/null
+++ b/engines/illusions/fixedpoint.h
@@ -0,0 +1,45 @@
+/* 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.
+ *
+ */
+
+#ifndef ILLUSIONS_FIXEDPOINT_H
+#define ILLUSIONS_FIXEDPOINT_H
+
+#include "common/rect.h"
+
+namespace Illusions {
+
+typedef int32 FP16;
+
+struct FPRect {
+	FP16 x1, y1, x2, y2;
+};
+
+FP16 floatToFixed(float value);
+float fixedToFloat(FP16 value);
+FP16 fixedMul(FP16 a, FP16 b);
+FP16 fixedDiv(FP16 a, FP16 b);
+int fixedTrunc(FP16 value);
+FP16 fixedDistance(FP16 x1, FP16 y1, FP16 x2, FP16 y2);
+
+} // End of namespace Illusions
+
+#endif // ILLUSIONS_FIXEDPOINT_H