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engines/neverhood/palette.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 NEVERHOOD_PALETTE_H
+#define NEVERHOOD_PALETTE_H
+
+#include "neverhood/neverhood.h"
+#include "neverhood/entity.h"
+
+namespace Neverhood {
+
+class Palette : public Entity {
+public:
+	// Default constructor with black palette
+	Palette(NeverhoodEngine *vm);
+	// Create from existing palette
+	Palette(NeverhoodEngine *vm, byte *palette);
+	// Create from resource with filename
+	Palette(NeverhoodEngine *vm, const char *filename);
+	// Create from resource with fileHash
+	Palette(NeverhoodEngine *vm, uint32 fileHash);
+	~Palette() override;
+	void init();
+	void usePalette();
+	void addPalette(const char *filename, int toIndex, int count, int fromIndex);
+	void addPalette(uint32 fileHash, int toIndex, int count, int fromIndex);
+	void addBasePalette(uint32 fileHash, int toIndex, int count, int fromIndex);
+	void copyPalette(const byte *palette, int toIndex, int count, int fromIndex);
+	void copyBasePalette(int toIndex, int count, int fromIndex);
+	void startFadeToBlack(int counter);
+	void startFadeToWhite(int counter);
+	void startFadeToPalette(int counter);
+	void fillBaseWhite(int index, int count);
+	void fillBaseBlack(int index, int count);
+	void copyToBasePalette(byte *palette);
+protected:
+	int _status;
+	byte *_palette;
+	byte *_basePalette;
+	int _palCounter;
+	byte _fadeToR, _fadeToG, _fadeToB;
+	int _fadeStep;
+	void update();
+	void fadeColor(byte *rgb, byte toR, byte toG, byte toB);
+	int calculateFadeStep(int counter);
+};
+
+} // End of namespace Neverhood
+
+#endif /* NEVERHOOD_PALETTE_H */