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engines/sky/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 SKY_GRID_H
+#define SKY_GRID_H
+
+
+#include "common/scummsys.h"
+#include "skydefs.h"
+
+namespace Sky {
+
+struct Compact;
+class Disk;
+class SkyCompact;
+
+class Grid {
+public:
+	Grid(Disk *pDisk, SkyCompact *skyCompact);
+	~Grid();
+
+	// grid.asm routines
+	void loadGrids();
+	void removeObjectFromWalk(Compact *cpt);
+	void objectToWalk(Compact *cpt);
+
+	// function.asm
+	// note that this routine does the same as objectToWalk, it just doesn't get
+	// its x, y, width parameters from cpt.
+	void plotGrid(uint32 x, uint32 y, uint32 width, Compact *cpt);
+	// same here, it's basically the same as removeObjectFromWalk
+	void removeGrid(uint32 x, uint32 y, uint32 width, Compact *cpt);
+	uint8 *giveGrid(uint32 pScreen);
+
+private:
+	void objectToWalk(uint8 gridIdx, uint32 bitNum, uint32 width);
+	void removeObjectFromWalk(uint8 gridIdx, uint32 bitNum, uint32 width);
+	bool getGridValues(Compact *cpt, uint8 *resGrid, uint32 *resBitNum, uint32 *resWidth);
+	bool getGridValues(uint32 x, uint32 y, uint32 width, Compact *cpt, uint8 *resGrid, uint32 *resBitNum, uint32 *resWidth);
+
+	static int8 _gridConvertTable[];
+	uint8 *_gameGrids[TOT_NO_GRIDS];
+	Disk *_skyDisk;
+	SkyCompact *_skyCompact;
+};
+
+} // End of namespace Sky
+
+#endif //SKYGRID_H