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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.
+ *
+ * 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 ZVISION_LEVER_CONTROL_H
+#define ZVISION_LEVER_CONTROL_H
+
+#include "common/types.h"
+
+#include "common/list.h"
+#include "common/rect.h"
+
+#include "zvision/control.h"
+
+
+namespace ZVision {
+
+class ZorkAVIDecoder;
+class RlfAnimation;
+
+class LeverControl : public Control {
+public:
+ LeverControl(ZVision *engine, uint32 key, Common::SeekableReadStream &stream);
+ ~LeverControl();
+
+private:
+ enum FileType {
+ RLF = 1,
+ AVI = 2
+ };
+
+ struct Direction {
+ Direction(uint angle, uint toFrame) : angle(angle), toFrame(toFrame) {}
+
+ uint angle;
+ uint toFrame;
+ };
+
+ struct FrameInfo {
+ Common::Rect hotspot;
+ Common::List<Direction> directions;
+ Common::List<uint> returnRoute;
+ };
+
+ enum {
+ ANGLE_DELTA = 30, // How far off a mouse angle can be and still be considered valid. This is in both directions, so the total buffer zone is (2 * ANGLE_DELTA)
+ ANIMATION_FRAME_TIME = 30 // In millis
+ };
+
+private:
+ union {
+ RlfAnimation *rlf;
+ ZorkAVIDecoder *avi;
+ } _animation;
+ FileType _fileType;
+
+ Common::String _cursorName;
+ Common::Rect _animationCoords;
+ bool _mirrored;
+ uint _frameCount;
+ uint _startFrame;
+ Common::Point _hotspotDelta;
+ FrameInfo *_frameInfo;
+
+ uint _currentFrame;
+ uint _lastRenderedFrame;
+ bool _mouseIsCaptured;
+ bool _isReturning;
+ Common::Point _lastMousePos;
+ Common::List<uint>::iterator _returnRoutesCurrentProgress;
+ uint _returnRoutesCurrentFrame;
+ uint32 _accumulatedTime;
+
+public:
+ void onMouseDown(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos);
+ void onMouseUp(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos);
+ bool onMouseMove(const Common::Point &screenSpacePos, const Common::Point &backgroundImageSpacePos);
+ bool process(uint32 deltaTimeInMillis);
+
+private:
+ void parseLevFile(const Common::String &fileName);
+ /**
+ * Calculates the angle a vector makes with the negative y-axis
+ *
+ * 90
+ * pointTwo * ^
+ * \ |
+ * \ |
+ * \ |
+ * \ |
+ * angle ( \|pointOne
+ * 180 <-----------*-----------> 0
+ * |
+ * |
+ * |
+ * |
+ * |
+ * ^
+ * 270
+ *
+ * @param pointOne The origin of the vector
+ * @param pointTwo The end of the vector
+ * @return The angle the vector makes with the negative y-axis
+ */
+ static int calculateVectorAngle(const Common::Point &pointOne, const Common::Point &pointTwo);
+ void renderFrame(uint frameNumber);
+};
+
+} // End of namespace ZVision
+
+#endif