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engines/queen/grid.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_GRID_H
+#define QUEEN_GRID_H
+
+#include "common/util.h"
+#include "queen/structs.h"
+
+namespace Queen {
+
+enum GridScreen {
+	GS_ROOM  = 0,
+	GS_PANEL = 1,
+	GS_COUNT = 2
+};
+
+class QueenEngine;
+
+class Grid {
+public:
+
+	Grid(QueenEngine *vm);
+	~Grid();
+
+	//! read areas data from specified stream
+	void readDataFrom(uint16 numObjects, uint16 numRooms, byte *&ptr);
+
+	//! defines a new zone
+	void setZone(GridScreen screen, uint16 zoneNum, uint16 x1, uint16 y1, uint16 x2, uint16 y2);
+
+	//! defines a new zone
+	void setZone(GridScreen screen, uint16 zoneNum, const Box &box);
+
+	//! find the zone number containing the specified point
+	uint16 findZoneForPos(GridScreen screen, uint16 x, uint16 y) const;
+
+	//! find the area number containing the specified point
+	uint16 findAreaForPos(GridScreen screen, uint16 x, uint16 y) const;
+
+	//! clear the zones for current room
+	void clear(GridScreen screen);
+
+	//! setup objects zones for the specified room
+	void setupNewRoom(uint16 room, uint16 firstRoomObjNum);
+
+	//! setup panel zones
+	void setupPanel();
+
+	//! draw the zones for current room (debug only)
+	void drawZones();
+
+	//! retuns a reference to the specified zone
+	const Box *zone(GridScreen screen, uint16 index) const;
+
+	//! get the verb for the specified cursor position
+	Verb findVerbUnderCursor(int16 cursorx, int16 cursory) const;
+
+	//! get the object for the specified cursor position
+	uint16 findObjectUnderCursor(int16 cursorx, int16 cursory) const;
+
+	//! get the object for the specified zone number
+	uint16 findObjectNumber(uint16 zoneNum) const;
+
+	//! get scale for the specified position
+	uint16 findScale(uint16 x, uint16 y) const;
+
+	//! returns a reference to the specfied room area
+	Area *area(int room, int num) const { return &_area[room][num]; }
+
+	//! returns the number of areas in this room
+	uint16 areaMax(int room) const { return _areaMax[room]; }
+
+	//! returns the number of objects in this room
+	uint16 objMax(int room) const { return _objMax[room]; }
+
+	void saveState(byte *&ptr);
+	void loadState(uint32 ver, byte *&ptr);
+
+	enum {
+		MAX_ZONES_NUMBER = 32,
+		MAX_AREAS_NUMBER = 11
+	};
+
+
+private:
+
+	struct ZoneSlot {
+		bool valid;
+		Box box;
+	};
+
+	//! current room zones
+	ZoneSlot _zones[GS_COUNT][MAX_ZONES_NUMBER];
+
+	//! number of objects for each room
+	int16 *_objMax;
+
+	//! number of areas for each room
+	int16 *_areaMax;
+
+	//! areas for each room
+	Area (*_area)[MAX_AREAS_NUMBER];
+
+	//! total number of room areas
+	uint16 _numRoomAreas;
+
+	//! box/zone for each objects
+	Box *_objectBox;
+
+	QueenEngine *_vm;
+};
+
+
+} // End of namespace Queen
+
+#endif