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engines/qdengine/system/graphics/gr_tile_sprite.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 QDENGINE_SYSTEM_GRAPHICS_GR_TILE_SPRITE_H
+#define QDENGINE_SYSTEM_GRAPHICS_GR_TILE_SPRITE_H
+
+namespace QDEngine {
+
+const int GR_TILE_SPRITE_SIZE_SHIFT = 4;
+const int GR_TILE_SPRITE_SIZE_X     = 1 << GR_TILE_SPRITE_SIZE_SHIFT;
+const int GR_TILE_SPRITE_SIZE_Y     = 1 << GR_TILE_SPRITE_SIZE_SHIFT;
+
+const int GR_TILE_SPRITE_SIZE       = GR_TILE_SPRITE_SIZE_X * GR_TILE_SPRITE_SIZE_Y;
+const int GR_TILE_SPRITE_SIZE_BYTES = GR_TILE_SPRITE_SIZE * 4;
+
+enum grTileCompressionMethod {
+	TILE_UNCOMPRESSED,
+	TILE_COMPRESS_RLE,
+	TILE_COMPRESS_LZ77
+};
+
+/// Тайл-спрайт
+
+/// Квадратный 32х битный спрайт фиксированного размера.
+/// Данные внешние.
+class grTileSprite {
+public:
+	grTileSprite(const uint32 *data_ptr = 0);
+
+	bool operator == (const grTileSprite &sprite) const;
+
+	bool isEmpty() const {
+		return !_data;
+	}
+
+	const uint32 *data() const {
+		return _data;
+	}
+
+	static uint32 comprasionTolerance() {
+		return _comprasionTolerance;
+	}
+	static void setComprasionTolerance(uint32 value) {
+		_comprasionTolerance = value;
+	}
+
+	static uint32 compress(const uint32 *in_data, uint32 *out_data, grTileCompressionMethod compress_method);
+	static bool uncompress(const uint32 *in_data, uint32 in_data_length, uint32 *out_data, grTileCompressionMethod compress_method);
+
+private:
+
+	const uint32 *_data;
+
+	/// толерантность побайтового сравнения данных, [0, 255]
+	static uint32 _comprasionTolerance;
+};
+
+} // namespace QDEngine
+
+#endif // QDENGINE_SYSTEM_GRAPHICS_GR_TILE_SPRITE_H