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engines/access/martian/martian_duct.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.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef ACCESS_MARTIAN_MARTIAN_DUCT_H
+#define ACCESS_MARTIAN_MARTIAN_DUCT_H
+
+#include "common/scummsys.h"
+#include "common/array.h"
+#include "common/rect.h"
+#include "common/events.h"
+
+#include "access/martian/martian_resources.h" // For Point3 .. move it?
+
+namespace Access {
+
+namespace Martian {
+
+enum MoveIntent {
+	kMoveIntentNone,
+	kMoveIntentUp,
+	kMoveIntentLeft,
+	kMoveIntentDown,
+	kMoveIntentRight,
+};
+
+// Move angles - in the original these are indexes into sin/cos lookup tables.
+// Add Invalid to ensure at least 2-byte length.
+enum MoveAngle {
+	kMoveAngleNorth = 0,
+	kMoveAngleEast = 0x40,
+	kMoveAngleSouth = 0x80,
+	kMoveAngleWest = 0xC0,
+	kMoveAngleInvalid = 0xffff,
+};
+
+enum DuctFlags {
+	kDuctFlagNone = 0,
+	kDuctFlagZLessThanX = 1,
+	kDuctFlagXLessThanNegZ = 2,
+	kDuctFlagYLessThanNegZ = 4,
+	kDuctFlagZLessThanY = 8,
+	kDuctFlagZLessThan2 = 16,
+};
+
+struct RenderShape {
+	byte _col;
+	Common::Array<uint16> _pointIdxs;
+};
+
+class MartianEngine;
+
+class MartianDuct {
+public:
+	MartianDuct(MartianEngine *vm);
+	~MartianDuct();
+
+	void duct2();
+	void duct4();
+
+private:
+	void doDuct();
+	void drawArrowSprites();
+	void drawArrowSprites2();
+	void clearWorkScreenArea();
+	void copyBufBlockToScreen();
+	void waitForMoveUpdate();
+	void storeLastValsToPrimArray(const Point3 &pt1, const Point3 &pt2);
+	void updatePlayerPos();
+	void updateMatrix();
+	void applyMatrixToMapData();
+	void updatePrimsAndDraw();
+	bool updateMapLocation();
+	void checkFinished();
+	void doMatrixMulAndAddPoint(int16 x, int16 y, int16 z);
+	bool doPrimArrayUpdates(int &tempIdx);
+	void doDraw(int counter);
+
+	void getPointValuesFromArray(int offset, Point3 &pt1, Point3 &pt2) const;
+	Common::Rect calcFinalLineSegment(const Point3 &pt1, const Point3 &pt2) const;
+
+	bool checkAndUpdatePrimArray1(int &offset);
+	bool checkAndUpdatePrimArray2(int &offset);
+	bool checkAndUpdatePrimArray3(int &offset);
+	bool checkAndUpdatePrimArray4(int &offset);
+	bool checkAndUpdatePrimArray5(int &offset);
+	bool checkAndUpdatePrimArrayForFlag(int &offset, DuctFlags flag, int divmulNum);
+
+	static Point3 divmul1(const Point3 &pt1, const Point3 &pt2);
+	static Point3 divmul2(const Point3 &pt1, const Point3 &pt2);
+	static Point3 divmul3(const Point3 &pt1, const Point3 &pt2);
+	static Point3 divmul4(const Point3 &pt1, const Point3 &pt2);
+	static Point3 divmul5(const Point3 &pt1, const Point3 &pt2);
+
+	bool checkMove0();
+	bool checkMove1();
+	bool checkMove2();
+	bool checkMove3();
+	bool checkMove4();
+	bool checkMove5();
+	bool checkMove6();
+	bool checkMove7();
+	bool checkMove8();
+	bool checkMove9();
+	bool checkMove10();
+	bool checkMove11();
+	bool checkMove12();
+	bool checkMove13_14();
+
+	void getXYandRBFlags(DuctFlags &xyflags, DuctFlags &rbflags, const Point3 &pt1, const Point3 &pt2);
+	int addPointsToMainPrimArray(int tempCount);
+	static DuctFlags getComparisonFlags(int16 x, int16 y, int16 z);
+
+	MartianEngine *_vm;
+	int16 _playerX;
+	int16 _preYOffset;
+	int16 _playerY;
+
+	int16 _nextPlayerX;
+	int16 _nextPlayerY;
+	int16 _xOffset;
+	int16 _yOffset;
+	int16 _xScale;
+	int16 _yScale;
+	uint16 _mapLoc;
+	MoveAngle _moveAngle;
+	int16 _crawlFrame;
+	bool _stopMoveLoop;
+	int16 _threshold1;
+	int16 _drawDistX;
+	int16 _drawDistY;
+	MoveIntent _moveIntent;
+
+	// NOTE: Original uses fixed point sin/cos with a lookup table.
+	float _matrix[3][3];
+
+	int16 _primArrayIdx;
+
+	Common::Array<Point3> _renderPoints;
+	Common::Array<RenderShape> _renderShapes;
+
+	Common::Array<int16> _primX1Array;
+	Common::Array<int16> _primY1Array;
+	Common::Array<int16> _primZ1Array;
+	Common::Array<int16> _primX2Array;
+	Common::Array<int16> _primY2Array;
+	Common::Array<int16> _primZ2Array;
+	Point3 _tempPoints[32];
+};
+
+}
+
+} // end namespace Access
+
+#endif // ACCESS_MARTIAN_MARTIAN_DUCT_H