Initial commit

engines/sky/screen.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_SCREEN_H
+#define SKY_SCREEN_H
+
+
+#include "common/scummsys.h"
+#include "sky/skydefs.h"
+
+class OSystem;
+
+namespace Common {
+struct Rect;
+}
+
+namespace Sky {
+
+class Disk;
+class SkyEngine;
+class SkyCompact;
+struct Compact;
+struct DataFileHeader;
+
+#define SCROLL_JUMP		16
+#define VGA_COLORS		256
+#define GAME_COLORS		240
+
+#define FORE 1
+#define BACK 0
+
+typedef struct {
+	uint16 yCood;
+	Compact *compact;
+	DataFileHeader *sprite;
+} StSortList;
+
+class Screen {
+public:
+	Screen(OSystem *pSystem, Disk *pDisk, SkyCompact *skyCompact);
+	~Screen();
+	void setPalette(uint8 *pal);
+	void setPaletteEndian(uint8 *pal);
+	void setPalette(uint16 fileNum);
+	void paletteFadeUp(uint8 *pal);
+	void paletteFadeUp(uint16 fileNr);
+
+	void showScreen(uint16 fileNum, bool fullscreen = false);
+	void showScreen(uint8 *pScreen, bool fullscreen = false);
+
+	void handleTimer();
+	void startSequence(uint16 fileNum);
+	void startSequenceItem(uint16 itemNum);
+	void stopSequence();
+	bool sequenceRunning() { return _seqInfo.running; }
+	void processSequence();
+	void waitForSequence();
+	uint32 seqFramesLeft() { return _seqInfo.framesLeft; }
+	uint8 *giveCurrent() { return _currentScreen; }
+	void halvePalette();
+
+	//- regular screen.asm routines
+	void forceRefresh() { memset(_gameGrid, 0x80, GRID_X * GRID_Y); }
+	void fnFadeUp(uint32 palNum, uint32 scroll);
+	void fnFadeDown(uint32 scroll);
+	void fnDrawScreen(uint32 palette, uint32 scroll);
+	void clearScreen(bool fullscreen = false);
+	void setFocusRectangle(const Common::Rect& rect);
+
+	void recreate();
+	void flip(bool doUpdate = true);
+
+	void spriteEngine();
+
+	void paintBox(uint16 x, uint16 y);
+	void showGrid(uint8 *gridBuf);
+
+private:
+	OSystem *_system;
+	Disk *_skyDisk;
+	SkyCompact *_skyCompact;
+	static uint8 _top16Colors[16 * 3];
+	uint8 _palette[VGA_COLORS * 3];
+	uint32 _currentPalette;
+	uint8 _seqGrid[20 * 12];
+
+	void waitForTick();
+
+	uint8 *_gameGrid;
+	uint8 *_currentScreen;
+	uint8 *_scrollScreen;
+	struct {
+		uint32 nextFrame;
+		uint32 framesLeft;
+		uint8 *seqData;
+		uint8 *seqDataPos;
+		volatile bool running;
+		bool runningItem; // when playing an item, don't free it afterwards.
+	} _seqInfo;
+
+	//- more regular screen.asm + layer.asm routines
+	void convertPalette(uint8 *inPal, uint8* outPal);
+	void palette_fadedown_helper(uint8 *pal, uint num);
+
+	//- sprite.asm routines
+	// fixme: get rid of these globals
+	uint32 _sprWidth, _sprHeight, _sprX, _sprY, _maskX1, _maskX2;
+	void doSprites(uint8 layer);
+	void sortSprites();
+	void drawSprite(uint8 *spriteData, Compact *sprCompact);
+	void verticalMask();
+	void vertMaskSub(uint16 *grid, uint32 gridOfs, uint8 *screenPtr, uint32 layerId);
+	void vectorToGame(uint8 gridVal);
+};
+
+} // End of namespace Sky
+
+#endif //SKYSCREEN_H