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engines/toltecs/render.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 TOLTECS_RENDER_H
+#define TOLTECS_RENDER_H
+
+#include "graphics/surface.h"
+
+#include "toltecs/segmap.h"
+#include "toltecs/screen.h"
+#include "toltecs/microtiles.h"
+
+namespace Toltecs {
+
+enum RenderType {
+	kSprite,
+	kText,
+	kMask
+};
+
+enum RenderFlags {
+	kNone			= 1 << 0,
+	kRefresh		= 1 << 1,
+	kRemoved		= 1 << 2,
+	kMoved			= 1 << 3,
+	kUnchanged		= 1 << 4
+};
+
+struct RenderTextItem {
+	byte color;
+	uint fontResIndex;
+	byte *text;
+	int len;
+};
+
+struct RenderQueueItem {
+	RenderType type;
+	uint flags;
+	Common::Rect rect;
+	int16 priority;
+	union {
+		SpriteDrawItem sprite;
+		RenderTextItem text;
+		SegmapMaskRect mask;
+	};
+};
+
+class RenderQueue {
+public:
+	RenderQueue(ToltecsEngine *vm);
+	~RenderQueue();
+
+	void addSprite(SpriteDrawItem &sprite);
+	void addText(int16 x, int16 y, byte color, uint fontResIndex, byte *text, int len);
+	void addMask(SegmapMaskRect &mask);
+	void update();
+	void clear();
+
+protected:
+	typedef Common::List<RenderQueueItem> RenderQueueArray;
+
+	ToltecsEngine *_vm;
+	RenderQueueArray *_currQueue, *_prevQueue;
+	MicroTileArray *_updateUta;
+
+	bool rectIntersectsItem(const Common::Rect &rect);
+	RenderQueueItem *findItemInQueue(RenderQueueArray *queue, const RenderQueueItem &item);
+	bool hasItemChanged(const RenderQueueItem &item1, const RenderQueueItem &item2);
+	void invalidateItemsByRect(const Common::Rect &rect, const RenderQueueItem *item);
+
+	void addDirtyRect(const Common::Rect &rect);
+	void restoreDirtyBackground();
+	void updateDirtyRects();
+
+};
+
+} // End of namespace Toltecs
+
+#endif /* TOLTECS_RENDER_H */