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engines/toltecs/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 TOLTECS_SCREEN_H
+#define TOLTECS_SCREEN_H
+
+#include "graphics/surface.h"
+#include "toltecs/toltecs.h"
+
+namespace Toltecs {
+
+struct DrawRequest {
+	int16 x, y;
+	int16 resIndex;
+	uint16 flags;
+	int16 baseColor;
+	int8 scaling;
+};
+
+struct SpriteDrawItem {
+	int16 x, y;
+	int16 width, height;
+	int16 origWidth, origHeight;
+	int16 resIndex, frameNum;
+	uint32 offset;
+	int16 xdelta, ydelta;
+	uint16 flags;
+	int16 skipX, yerror;
+	int16 priority;
+	int16 baseColor;
+};
+
+struct SpriteFrameEntry {
+	int16 y, x, h, w;
+	uint32 offset;
+	SpriteFrameEntry() {
+	}
+	SpriteFrameEntry(byte *data) {
+		y = READ_LE_UINT16(data + 0);
+		x = READ_LE_UINT16(data + 2);
+		h = READ_LE_UINT16(data + 4);
+		w = READ_LE_UINT16(data + 6);
+		offset = READ_LE_UINT32(data + 8);
+	}
+};
+
+class Font {
+public:
+	Font(byte *fontData) : _fontData(fontData) {
+	}
+	~Font() {
+	}
+	int16 getSpacing() const {
+		return _fontData[1];
+	}
+	int16 getHeight() const {
+		return _fontData[2];
+	}
+	int16 getWidth() const {
+		return _fontData[3];
+	}
+	int16 getCharWidth(byte ch) const {
+		return _fontData[4 + (ch - 0x21)];
+	}
+	byte *getCharData(byte ch) const {
+		return _fontData + 0x298 + READ_LE_UINT16(&_fontData[0xE0 + (ch - 0x21) * 2]);
+	}
+	int16 getTextWidth(const byte *text) {
+		int16 width = 0;
+		while (*text && *text < 0xF0) {
+			byte ch = *text++;
+			if (ch <= 0x20) {
+				width += getWidth();
+			} else {
+				width += getCharWidth(ch) + getSpacing() - 1;
+			}
+		}
+		return width;
+	}
+
+protected:
+	byte *_fontData;
+};
+
+struct PixelPacket {
+	byte count;
+	byte pixel;
+};
+
+enum SpriteReaderStatus {
+	kSrsPixelsLeft,
+	kSrsEndOfLine,
+	kSrsEndOfSprite
+};
+
+class SpriteFilter {
+public:
+	SpriteFilter(const SpriteDrawItem &sprite) : _sprite(&sprite) {
+	}
+	virtual ~SpriteFilter() {}
+	virtual SpriteReaderStatus readPacket(PixelPacket &packet) = 0;
+protected:
+	const SpriteDrawItem *_sprite;
+};
+
+struct TextRect {
+	int16 x, y;
+	int16 width, length;
+};
+
+struct TalkTextItem {
+	int16 duration;
+	int16 slotIndex;
+	int16 slotOffset;
+	int16 fontNum;
+	byte color;
+	byte lineCount;
+	TextRect lines[15];
+	bool alwaysDisplayed;
+};
+
+struct GuiTextWrapState {
+	int16 len1, len2;
+	byte *sourceString;
+	byte *destString;
+	int16 width;
+	byte textBuffer[100];
+};
+
+class RenderQueue;
+
+class Screen {
+public:
+	Screen(ToltecsEngine *vm);
+	~Screen();
+
+	void unpackRle(byte *source, byte *dest, uint16 width, uint16 height);
+
+	void loadMouseCursor(uint resIndex);
+
+	void drawGuiImage(int16 x, int16 y, uint resIndex);
+
+	void startShakeScreen(int16 shakeCounter);
+	void stopShakeScreen();
+	bool updateShakeScreen();
+
+	// Sprite list
+	void addStaticSprite(byte *spriteItem);
+	void addAnimatedSprite(int16 x, int16 y, int16 fragmentId, byte *data, int16 *spriteArray, bool loop, int mode);
+
+	// Sprite drawing
+	void drawSprite(const SpriteDrawItem &sprite);
+	void drawSpriteCore(byte *dest, SpriteFilter &reader, const SpriteDrawItem &sprite);
+	void blastSprite(int16 x, int16 y, int16 fragmentId, int16 resIndex, uint16 flags);
+
+	// Verb line
+	void updateVerbLine(int16 slotIndex, int16 slotOffset);
+
+	// Talk text
+	void updateTalkText(int16 slotIndex, int16 slotOffset, bool alwaysDisplayed);
+	void addTalkTextRect(Font &font, int16 x, int16 &y, int16 length, int16 width, TalkTextItem *item);
+	void addTalkTextItemsToRenderQueue();
+	int16 getTalkTextDuration();
+	bool isTalkTextActive(int16 slotIndex);
+	void finishTalkTextItem(int16 slotIndex);
+	void finishTalkTextItems();
+	void keepTalkTextItemsAlive();
+
+	// Font/text
+	void registerFont(uint fontIndex, uint resIndex);
+	void drawGuiTextMulti(byte *textData);
+	int16 wrapGuiText(uint fontResIndex, int maxWidth, GuiTextWrapState &wrapState);
+	void drawGuiText(int16 x, int16 y, byte fontColor1, byte fontColor2, uint fontResIndex, GuiTextWrapState &wrapState);
+
+	int16 drawString(int16 x, int16 y, byte color, uint fontResIndex, const byte *text, int len = -1, int16 *ywobble = NULL, bool outline = false);
+	void drawChar(const Font &font, byte *dest, int16 x, int16 y, byte ch, byte color, bool outline);
+
+	void drawSurface(int16 x, int16 y, Graphics::Surface *surface);
+
+	void saveState(Common::WriteStream *out);
+	void loadState(Common::ReadStream *in);
+
+	uint getFontResIndex(int fontNum) const { return _fontResIndexArray[fontNum]; }
+
+//protected:
+public:
+
+	struct VerbLineItem {
+		int16 slotIndex;
+		int16 slotOffset;
+	};
+
+	struct Rect {
+		int16 x, y, width, height;
+	};
+
+	ToltecsEngine *_vm;
+
+	byte *_frontScreen, *_backScreen;
+
+	uint _fontResIndexArray[10];
+	byte _fontColor1, _fontColor2;
+
+	// Screen shaking
+	bool _shakeActive;
+	uint32 _shakeTime;
+	int16 _shakeCounterInit, _shakeCounter;
+	int _shakePos;
+
+	// Verb line
+	int16 _verbLineNum;
+	VerbLineItem _verbLineItems[8];
+	int16 _verbLineX, _verbLineY, _verbLineWidth;
+	int16 _verbLineCount;
+
+	// Talk text
+	int16 _talkTextX, _talkTextY;
+	int16 _talkTextMaxWidth;
+	byte _talkTextFontColor;
+	int16 _talkTextItemNum;
+	TalkTextItem _talkTextItems[5];
+
+	RenderQueue *_renderQueue;
+	bool _fullRefresh;
+	bool _guiRefresh;
+
+	bool createSpriteDrawItem(const DrawRequest &drawRequest, SpriteDrawItem &sprite);
+	void addDrawRequest(const DrawRequest &drawRequest);
+
+};
+
+} // End of namespace Toltecs
+
+#endif /* TOLTECS_SCREEN_H */