util.h

/* 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/>.
 *
 *
 * This file is dual-licensed.
 * In addition to the GPLv3 license mentioned above, this code is also
 * licensed under LGPL 2.1. See LICENSES/COPYING.LGPL file for the
 * full text of the license.
 *
 */

#ifndef GOB_UTIL_H
#define GOB_UTIL_H

#include "common/str.h"
#include "common/keyboard.h"
#include "common/events.h"

namespace Common {
    class SeekableReadStream;
}

namespace Gob {

class GobEngine;

#define KEYBUFSIZE 16

enum MouseButtons {
    kMouseButtonsNone  = 0,
    kMouseButtonsLeft  = 1,
    kMouseButtonsRight = 2,
    kMouseButtonsBoth  = 3,
    kMouseButtonsAny   = 4
};

enum Keys {
    kKeyNone      = 0x0000,
    kKeyBackspace = 0x0E08,
    kKeySpace     = 0x3920,
    kKeyReturn    = 0x1C0D,
    kKeyEscape    = 0x011B,
    kKeyDelete    = 0x5300,
    kKeyUp        = 0x4800,
    kKeyDown      = 0x5000,
    kKeyRight     = 0x4D00,
    kKeyLeft      = 0x4B00,
    kKeyF1        = 0x3B00,
    kKeyF2        = 0x3C00,
    kKeyF3        = 0x3D00,
    kKeyF4        = 0x3E00,
    kKeyF5        = 0x3F00,
    kKeyF6        = 0x4000,
    kKeyF7        = 0x4100,
    kKeyF8        = 0x4200,
    kKeyF9        = 0x4300,
    kKeyF10       = 0x4400
};

enum ShortKey {
    kShortKeyUp        = 0x0B,
    kShortKeyDown      = 0x0A,
    kShortKeyRight     = 0x09,
    kShortKeyLeft      = 0x08,
    kShortKeyEscape    = 0x1B,
    kShortKeyBackspace = 0x19,
    kShortKeyDelete    = 0x1A
};

class Util {
public:
    struct ListNode;
    struct ListNode {
        void *pData;
        struct ListNode *pNext;
        struct ListNode *pPrev;
        ListNode() : pData(0), pNext(0), pPrev(0) {}
    };

    struct List {
        ListNode *pHead;
        ListNode *pTail;
        List() : pHead(0), pTail(0) {}
    };

    uint32 getTimeKey();
    int16 getRandom(int16 max);
    void beep(int16 freq);

    void notifyPaused(uint32 duration);

    void delay(uint16 msecs);
    void longDelay(uint16 msecs);

    void initInput();
    void processInput(bool scroll = false);
    void clearKeyBuf();
    int16 getKey();
    int16 checkKey();
    bool checkKey(int16 &key);
    bool keyPressed();

    uint32 getKeyState() const;

    void getMouseState(int16 *pX, int16 *pY, MouseButtons *pButtons);
    void setMousePos(int16 x, int16 y);
    void waitMouseUp();
    void waitMouseDown();
    void waitMouseRelease(char drawMouse);
    void forceMouseUp(bool onlyWhenSynced = false);
    void forceMouseButtonsSync();

    void clearPalette();
    int16 getFrameRate();
    void setFrameRate(int16 rate);
    void notifyNewAnim();
    void waitEndFrame(bool handleInput = true);
    void setScrollOffset(int16 x = -1, int16 y = -1);

    static void insertStr(const char *str1, char *str2, int16 pos);
    static void cutFromStr(char *str, int16 from, int16 cutlen);
    static void cleanupStr(char *str);
    static void replaceChar(char *str, char c1, char c2);

    static void listInsertFront(List *list, void *data);
    static void listInsertBack(List *list, void *data);
    static void listDropFront(List *list);
    static void deleteList(List *list);

    //static char *setExtension(char *str, const char *ext);
    static Common::String setExtension(const Common::String &str, const Common::String &ext);

    static Common::String readString(Common::SeekableReadStream &stream, int n);

    static char toCP850Lower(char cp850);
    static char toCP850Upper(char cp850);

    Util(GobEngine *vm);

protected:
    MouseButtons _mouseButtons;

    Common::KeyState _keyBuffer[KEYBUFSIZE];
    int16 _keyBufferHead;
    int16 _keyBufferTail;

    uint8 _fastMode;

    int16 _frameRate;
    int16 _frameWaitTime;
    uint32 _startFrameTime;

    uint32 _keyState;

    GobEngine *_vm;

    bool keyBufferEmpty();
    void addKeyToBuffer(const Common::KeyState &key);
    bool getKeyFromBuffer(Common::KeyState &key);
    int16 translateKey(const Common::KeyState &key);
    int16 toCP850(uint16 latin1);
    void checkJoystick();

    void keyDown(const Common::Event &event);
    void keyUp(const Common::Event &event);
};

} // End of namespace Gob

#endif // GOB_UTIL_H