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engines/queen/walk.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 QUEEN_WALK_H
+#define QUEEN_WALK_H
+
+#include "common/util.h"
+#include "queen/structs.h"
+
+namespace Queen {
+
+struct MovePersonAnim {
+	int16 firstFrame;
+	int16 lastFrame;
+	Direction facing;
+
+	void set(int16 ff, int16 lf, Direction dir) {
+		firstFrame = ff;
+		lastFrame = lf;
+		facing = dir;
+	}
+};
+
+struct WalkData {
+	int16 dx, dy;
+	const Area *area;
+	uint16 areaNum;
+	MovePersonAnim anim;
+};
+
+struct MovePersonData {
+	const char *name;
+	int16 walkLeft1, walkLeft2;
+	int16 walkRight1, walkRight2;
+	int16 walkBack1, walkBack2;
+	int16 walkFront1, walkFront2;
+	uint16 frontStandingFrame;
+	uint16 backStandingFrame;
+	uint16 animSpeed;
+	uint16 moveSpeed;
+};
+
+class QueenEngine;
+
+class Walk {
+public:
+
+	Walk(QueenEngine *vm);
+
+	int16 moveJoe(int direction, int16 endx, int16 endy, bool inCutaway);
+	int16 movePerson(const Person *pp, int16 endx, int16 endy, uint16 curImage, int direction);
+
+	void stopJoe();
+	void stopPerson(uint16 bobNum);
+
+	enum {
+		MAX_WALK_DATA = 16
+	};
+
+private:
+
+	void animateJoePrepare();
+	void animateJoe();
+
+	void animatePersonPrepare(const MovePersonData *mpd, int direction);
+	void animatePerson(const MovePersonData *mpd, uint16 image, uint16 bobNum, uint16 bankNum, int direction);
+
+	/// compute transition coordinate
+	static int16 calcC(int16 c1, int16 c2, int16 c3, int16 c4, int16 lastc);
+
+	/// find area for position
+	int16 findAreaPosition(int16 *x, int16 *y, bool recalibrate);
+
+	/// find an area not already struck
+	uint16 findFreeArea(uint16 area) const;
+
+	/// return true if the area is already on the walking path
+	bool isAreaStruck(uint16 area) const;
+
+	/// calculates the path list from oldArea to newArea
+	bool calcPath(uint16 oldArea, uint16 newArea);
+
+	/// resets path computed in calcPath()
+	void initWalkData();
+
+	/// add an area to the path
+	void incWalkData(int16 px, int16 py, int16 x, int16 y, uint16 area);
+
+	/// compute path (and populates _walkData) from current position to the new one
+	bool calc(uint16 oldPos, uint16 newPos, int16 oldx, int16 oldy, int16 x, int16 y);
+
+
+	/// areas for current room
+	const Area *_roomArea;
+
+	/// number of areas for current room
+	uint16 _roomAreaCount;
+
+	/// walking steps
+	WalkData _walkData[MAX_WALK_DATA];
+
+	/// number of walking steps
+	uint16 _walkDataCount;
+
+	uint16 _areaStrike[MAX_WALK_DATA];
+	uint16 _areaStrikeCount;
+
+	uint16 _areaList[MAX_WALK_DATA];
+	uint16 _areaListCount;
+
+	/// set if stopJoe() is called
+	bool _joeInterrupted;
+
+	/// set if handleSpecialArea() is called
+	bool _joeMoveBlock;
+
+	QueenEngine *_vm;
+
+	/// persons walking animation data
+	static const MovePersonData _moveData[];
+};
+
+} // End of namespace Queen
+
+#endif