/* ScummVM - Scumm Interpreter
 * Copyright (C) 2004-2005 The ScummVM project
 *
 * The ReInherit Engine is (C)2000-2003 by Daniel Balsom.
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 *
 */

// Game interface module private header file

#ifndef SAGA_INTERFACE_H__
#define SAGA_INTERFACE_H__

#include "saga/sprite.h"
#include "saga/script.h"

namespace Saga {

enum InterfaceUpdateFlags {
	UPDATE_MOUSEMOVE = 1,
	UPDATE_LEFTBUTTONCLICK = 2,
	UPDATE_RIGHTBUTTONCLICK = 4,
	UPDATE_MOUSECLICK = UPDATE_LEFTBUTTONCLICK | UPDATE_RIGHTBUTTONCLICK
};

#define ITE_INVENTORY_SIZE 24

#define VERB_STRLIMIT 32

#define STATUS_TEXT_LEN 128

// Converse-specific stuff
#define CONVERSE_MAX_TEXTS      64
#define CONVERSE_MAX_TEXT_WIDTH (256 - 60)
#define CONVERSE_TEXT_HEIGHT	10
#define CONVERSE_TEXT_LINES     4

enum PanelModes {
	kPanelNull,
	kPanelMain,
	kPanelOption,
	kPanelTextBox,
	kPanelQuit,
	kPanelError,
	kPanelLoad,
	kPanelConverse,
	kPanelProtect,
	kPanelPlacard,
	kPanelMap,
	kPanelInventory,
	kPanelFade
};

struct InterfacePanel {
	int x;
	int y;
	byte *image;
	size_t imageLength;
	int imageWidth;
	int imageHeight;
	
	PanelButton *currentButton;
	int buttonsCount;
	PanelButton *buttons;
	SpriteList sprites;
};



struct Converse {
	char *text;
	int stringNum;
	int textNum;
	int replyId;
	int replyFlags;
	int replyBit;
};

class Interface {
public:
	Interface(SagaEngine *vm);
	~Interface(void);

	int activate();
	int deactivate();
	bool isActive() { return _active; }
	int setMode(int mode, bool force = false);
	int getMode(void) const { return _panelMode; }
	void rememberMode();
	void restoreMode();
	bool isInMainMode() { return _inMainMode; }
	int setStatusText(const char *new_txt);
	int loadScenePortraits(int resourceId);
	int setLeftPortrait(int portrait);
	int setRightPortrait(int portrait);
	int draw();
	int update(const Point& mousePoint, int updateFlag);
	int drawStatusBar(SURFACE *ds);
	void drawVerb(int verb, int state);

	bool processKeyCode(int keyCode);
	
	void addToInventory(int sprite);
	void removeFromInventory(int sprite);
	void drawInventory();
	
private:
	int inventoryTest(const Point& imousePt, int *ibutton);
	PanelButton *verbHitTest(const Point& mousePoint);
	void handleCommandUpdate(SURFACE *ds, const Point& mousePoint);
	void handleCommandClick(SURFACE *ds, const Point& mousePoint);
	int handlePlayfieldUpdate(SURFACE *ds, const Point& imousePt);
	int handlePlayfieldClick(SURFACE *ds, const Point& imousePt);
	
	void lockMode() { _lockedMode = _panelMode; }
	void unlockMode() { _panelMode = _lockedMode; }

	void drawPanelButtonText(SURFACE *ds, InterfacePanel *panel, PanelButton *panelButton, int textColor, int textShadowColor);
public:
	void converseClear(void);
	bool converseAddText(const char *text, int replyId, byte replyFlags, int replyBit);
	void converseDisplayText(int pos);
	void converseSetTextLines(int row, int textcolor, bool btnDown);
	void converseChangePos(int chg);
	void converseSetPos(int key);

private:
	void converseDisplayTextLine(int textcolor, bool btnUp, bool rebuild);
	PanelButton *getPanelButtonByVerbType(int verb) {
		if ((verb < 0) || (verb >= kVerbTypesMax)) {
			error("Interface::getPanelButtonByVerbType wrong verb");
		}
		return _verbTypeToPanelButton[verb];
	}
private:
	SagaEngine *_vm;

	bool _initialized;
	RSCFILE_CONTEXT *_interfaceContext;
	InterfacePanel _mainPanel;
	InterfacePanel _conversePanel;
	SpriteList _defPortraits;
	SpriteList _scenePortraits;
	ScriptThread *_iThread;
	PanelButton *_verbTypeToPanelButton[kVerbTypesMax];

	bool _active;
	int _panelMode;
	int _savedMode;
	int _lockedMode;
	bool _inMainMode;
	char _statusText[STATUS_TEXT_LEN];
	int _leftPortrait;
	int _rightPortrait;
	
	Point _lastMousePoint;

	uint16 *_inventory;
	int _inventorySize;
	byte _inventoryCount;

	Converse _converseText[CONVERSE_MAX_TEXTS];
	int _converseTextCount;
	int _converseStrCount;
	int _converseStartPos;
	int _converseEndPos;
	int _conversePos;

	byte _converseLastColors[2][CONVERSE_TEXT_LINES];
};

} // End of namespace Saga

#endif				/* INTERFACE_H__ */
/* end "r_interface.h" */