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text.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2005-2006 The ScummVM project
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/engines/kyra/text.cpp $
 * $Id: text.cpp 22769 2006-05-30 12:13:34Z eriktorbjorn $
 *
 */

#include "common/stdafx.h"

#include "kyra/kyra.h"
#include "kyra/screen.h"
#include "kyra/text.h"
#include "kyra/animator.h"
#include "kyra/sprites.h"

#include "common/system.h"

namespace Kyra {

void KyraEngine::waitForChatToFinish(int16 chatDuration, const char *chatStr, uint8 charNum) {
      debugC(9, kDebugLevelMain, "KyraEngine::waitForChatToFinish(%i, %s, %i)", chatDuration, chatStr, charNum); 
      bool hasUpdatedNPCs = false;
      bool runLoop = true;
      uint8 currPage;
      OSystem::Event event;

      //while( towns_isEscKeyPressed() )
            //towns_getKey();

      uint32 timeToEnd = strlen(chatStr) * 8 * _tickLength + _system->getMillis();

      if (_configVoice == 0 && chatDuration != -1) {
            switch (_configTextspeed) {
            case 0:
                  chatDuration *= 2;
                  break;
            case 2:
                  chatDuration /= 4;
                  break;
            case 3:
                  chatDuration = -1;
                  break;
            }
      }

      if (chatDuration != -1)
            chatDuration *= _tickLength;

      disableTimer(14);
      disableTimer(18);
      disableTimer(19);

      uint32 timeAtStart = _system->getMillis();
      uint32 loopStart;
      while (runLoop) {
            loopStart = _system->getMillis();
            if (_currentCharacter->sceneId == 210)
                  if (seq_playEnd())
                        break;

            if (_system->getMillis() > timeToEnd && !hasUpdatedNPCs) {
                  hasUpdatedNPCs = true;
                  disableTimer(15);
                  _currHeadShape = 4;
                  _animator->animRefreshNPC(0);
                  _animator->animRefreshNPC(_talkingCharNum);

                  if (_charSayUnk2 != -1) {
                        _animator->sprites()[_charSayUnk2].active = 0;
                        _sprites->_anims[_charSayUnk2].play = false;
                        _charSayUnk2 = -1;
                  }
            }

            updateGameTimers();
            _sprites->updateSceneAnims();
            _animator->restoreAllObjectBackgrounds();
            _animator->preserveAnyChangedBackgrounds();
            _animator->prepDrawAllObjects();

            currPage = _screen->_curPage;
            _screen->_curPage = 2;
            _text->printCharacterText(chatStr, charNum, _characterList[charNum].x1);
            _animator->_updateScreen = true;
            _screen->_curPage = currPage;

            _animator->copyChangedObjectsForward(0);
            updateTextFade();

            if ((chatDuration < (int16)(_system->getMillis() - timeAtStart)) && chatDuration != -1)
                  break;

            uint32 nextTime = loopStart + _gameSpeed;
            
            while (_system->getMillis() < nextTime) {
                  while (_system->pollEvent(event)) {
                        switch (event.type) {
                        case OSystem::EVENT_KEYDOWN:
                              if (event.kbd.keycode == '.')
                                    _skipFlag = true;
                              break;
                        case OSystem::EVENT_QUIT:
                              quitGame();
                              runLoop = false;
                              break;
                        case OSystem::EVENT_LBUTTONDOWN:
                              runLoop = false;
                              break;
                        default:
                              break;
                        }
                  }
            
                  if (nextTime - _system->getMillis() >= 10) {
                        _system->delayMillis(10);
                        _system->updateScreen();
                  }
            }

            if (_skipFlag)
                  runLoop = false;
      }

      enableTimer(14);
      enableTimer(15);
      enableTimer(18);
      enableTimer(19);
      //clearKyrandiaButtonIO();
}

void KyraEngine::endCharacterChat(int8 charNum, int16 convoInitialized) {
      _charSayUnk3 = -1;

      if (charNum > 4 && charNum < 11) {
            //TODO: weird _game_inventory stuff here
            warning("STUB: endCharacterChat() for high charnums");
      }

      if (convoInitialized != 0) {
            _talkingCharNum = -1;
            _currentCharacter->currentAnimFrame = 7;
            _animator->animRefreshNPC(0);
            _animator->updateAllObjectShapes();
      }
}

void KyraEngine::restoreChatPartnerAnimFrame(int8 charNum) {
      _talkingCharNum = -1;

      if (charNum > 0 && charNum < 5) {
            _characterList[charNum].currentAnimFrame = _currentChatPartnerBackupFrame;
            _animator->animRefreshNPC(charNum);
      }

      _currentCharacter->currentAnimFrame = 7;
      _animator->animRefreshNPC(0);
      _animator->updateAllObjectShapes();
}

void KyraEngine::backupChatPartnerAnimFrame(int8 charNum) {
      _talkingCharNum = 0;

      if (charNum < 5 && charNum > 0) 
            _currentChatPartnerBackupFrame = _characterList[charNum].currentAnimFrame;

      if (_scaleMode != 0)
            _currentCharacter->currentAnimFrame = 7;
      else
            _currentCharacter->currentAnimFrame = _currentCharAnimFrame;

      _animator->animRefreshNPC(0);
      _animator->updateAllObjectShapes();
}

int8 KyraEngine::getChatPartnerNum() {
      uint8 sceneTable[] = {0x2, 0x5, 0x2D, 0x7, 0x1B, 0x8, 0x22, 0x9, 0x30, 0x0A};
      int pos = 0;
      int partner = -1;

      for (int i = 1; i < 6; i++) {
            if (_currentCharacter->sceneId == sceneTable[pos]) {
                  partner = sceneTable[pos+1];
                  break;
            }
            pos += 2;
      }

      for (int i = 1; i < 5; i++) {
            if (_characterList[i].sceneId == _currentCharacter->sceneId) {
                  partner = i;
                  break;
            }
      }
      return partner;
}

int KyraEngine::initCharacterChat(int8 charNum) {
      if (_talkingCharNum == -1) {
            _talkingCharNum = 0;

            if (_scaleMode != 0)
                  _currentCharacter->currentAnimFrame = 7;
            else
                  _currentCharacter->currentAnimFrame = 16;

            _animator->animRefreshNPC(0);
            _animator->updateAllObjectShapes();
      }

      _charSayUnk2 = -1;
      _animator->flagAllObjectsForBkgdChange();
      _animator->restoreAllObjectBackgrounds();

      if (charNum > 4 && charNum < 11) {
            // TODO: Fill in weird _game_inventory stuff here
            warning("STUB: initCharacterChat() for high charnums");
      }

      _animator->flagAllObjectsForRefresh();
      _animator->flagAllObjectsForBkgdChange();
      _animator->preserveAnyChangedBackgrounds();
      _charSayUnk3 = charNum;

      return 1;
}

void KyraEngine::characterSays(const char *chatStr, int8 charNum, int8 chatDuration) {
      debugC(9, kDebugLevelMain, "KyraEngine::characterSays('%s', %i, %d)", chatStr, charNum, chatDuration);
      uint8 startAnimFrames[] =  { 0x10, 0x32, 0x56, 0x0, 0x0, 0x0 };

      uint16 chatTicks;
      int16 convoInitialized;
      int8 chatPartnerNum;

      if (_currentCharacter->sceneId == 210)
            return;

      convoInitialized = initCharacterChat(charNum);  
      chatPartnerNum = getChatPartnerNum();

      if (chatPartnerNum != -1 && chatPartnerNum < 5)
            backupChatPartnerAnimFrame(chatPartnerNum);

      if (charNum < 5) {
            _characterList[charNum].currentAnimFrame = startAnimFrames[charNum];
            _charSayUnk3 = charNum;
            _talkingCharNum = charNum;
            _animator->animRefreshNPC(charNum);
      }

      char *processedString = _text->preprocessString(chatStr);
      int lineNum = _text->buildMessageSubstrings(processedString);

      int16 yPos = _characterList[charNum].y1;
      yPos -= ((_scaleTable[yPos] * _characterList[charNum].height) >> 8);
      yPos -= 8;
      yPos -= lineNum * 10;

      if (yPos < 11)
            yPos = 11;

      if (yPos > 100)
            yPos = 100;

      _text->_talkMessageY = yPos;
      _text->_talkMessageH = lineNum * 10;
      _animator->restoreAllObjectBackgrounds();

      _screen->copyRegion(12, _text->_talkMessageY, 12, 136, 296, _text->_talkMessageH, 2, 2);
      _screen->hideMouse();

      _text->printCharacterText(processedString, charNum, _characterList[charNum].x1);
      _screen->showMouse();

      if (chatDuration == -2)
            chatTicks = strlen(processedString) * 9;
      else
            chatTicks = chatDuration;

      waitForChatToFinish(chatTicks, chatStr, charNum);

      _animator->restoreAllObjectBackgrounds();

      _screen->copyRegion(12, 136, 12, _text->_talkMessageY, 296, _text->_talkMessageH, 2, 2);
      _animator->preserveAllBackgrounds();
      _animator->prepDrawAllObjects();
      _screen->hideMouse();

      _screen->copyRegion(12, _text->_talkMessageY, 12, _text->_talkMessageY, 296, _text->_talkMessageH, 2, 0);
      _screen->showMouse();
      _animator->flagAllObjectsForRefresh();
      _animator->copyChangedObjectsForward(0);

      if (chatPartnerNum != -1 && chatPartnerNum < 5)
            restoreChatPartnerAnimFrame(chatPartnerNum);

      endCharacterChat(charNum, convoInitialized);
}

void KyraEngine::drawSentenceCommand(const char *sentence, int color) {
      debugC(9, kDebugLevelMain, "KyraEngine::drawSentenceCommand('%s', %i)", sentence, color);
      _screen->hideMouse();
      _screen->fillRect(8, 143, 311, 152, 12);

      if (_startSentencePalIndex != color || _fadeText != false) {
            _currSentenceColor[0] = _screen->_currentPalette[765] = _screen->_currentPalette[color*3];
            _currSentenceColor[1] = _screen->_currentPalette[766] = _screen->_currentPalette[color*3+1];
            _currSentenceColor[2] = _screen->_currentPalette[767] = _screen->_currentPalette[color*3+2];
      
            _screen->setScreenPalette(_screen->_currentPalette);
            _startSentencePalIndex = 0;
      }

      _text->printText(sentence, 8, 143, 0xFF, 12, 0);
      _screen->showMouse();
      setTextFadeTimerCountdown(15);
      _fadeText = false;
}

void KyraEngine::updateSentenceCommand(const char *str1, const char *str2, int color) {
      debugC(9, kDebugLevelMain, "KyraEngine::updateSentenceCommand('%s', '%s', %i)", str1, str2, color);
      char sentenceCommand[500];
      strncpy(sentenceCommand, str1, 500);
      if (str2)
            strncat(sentenceCommand, str2, 500 - strlen(sentenceCommand));

      drawSentenceCommand(sentenceCommand, color);
      _screen->updateScreen();
}

void KyraEngine::updateTextFade() {
      debugC(9, kDebugLevelMain, "KyraEngine::updateTextFade()");
      if (!_fadeText)
            return;
      
      bool finished = false;
      for (int i = 0; i < 3; i++)
            if (_currSentenceColor[i] > 4)
                  _currSentenceColor[i] -= 4;
            else
                  if (_currSentenceColor[i]) {
                        _currSentenceColor[i] = 0;
                        finished = true;
                  }
            
      _screen->_currentPalette[765] = _currSentenceColor[0];
      _screen->_currentPalette[766] = _currSentenceColor[1];
      _screen->_currentPalette[767] = _currSentenceColor[2];
      _screen->setScreenPalette(_screen->_currentPalette);

      if (finished) {
            _fadeText = false;
            _startSentencePalIndex = -1;
      }
}

TextDisplayer::TextDisplayer(Screen *screen) {
      _screen = screen;

      _talkCoords.y = 0x88;
      _talkCoords.x = 0;
      _talkCoords.w = 0;
      _talkMessageY = 0xC;
      _talkMessageH = 0;
      _talkMessagePrinted = false;
}

void TextDisplayer::setTalkCoords(uint16 y) {
      debugC(9, kDebugLevelMain, "TextDisplayer::setTalkCoords(%d)", y);
      _talkCoords.y = y;
}

int TextDisplayer::getCenterStringX(const char *str, int x1, int x2) {
      debugC(9, kDebugLevelMain, "TextDisplayer::getCenterStringX('%s', %d, %d)", str, x1, x2);
      _screen->_charWidth = -2;
      Screen::FontId curFont = _screen->setFont(Screen::FID_8_FNT);
      int strWidth = _screen->getTextWidth(str);
      _screen->setFont(curFont);
      _screen->_charWidth = 0;
      int w = x2 - x1 + 1;
      return x1 + (w - strWidth) / 2;
}

int TextDisplayer::getCharLength(const char *str, int len) {
      debugC(9, kDebugLevelMain, "TextDisplayer::getCharLength('%s', %d)", str, len);
      int charsCount = 0;
      if (*str) {
            _screen->_charWidth = -2;
            Screen::FontId curFont = _screen->setFont(Screen::FID_8_FNT);
            int i = 0;
            while (i <= len && *str) {
                  i += _screen->getCharWidth(*str++);
                  ++charsCount;
            }
            _screen->setFont(curFont);
            _screen->_charWidth = 0;
      }
      return charsCount;
}

int TextDisplayer::dropCRIntoString(char *str, int offs) {
      debugC(9, kDebugLevelMain, "TextDisplayer::dropCRIntoString('%s', %d)", str, offs);
      int pos = 0;
      str += offs;
      while (*str) {
            if (*str == ' ') {
                  *str = '\r';
                  return pos;
            }
            ++str;
            ++pos;
      }
      return 0;
}

char *TextDisplayer::preprocessString(const char *str) {
      debugC(9, kDebugLevelMain, "TextDisplayer::preprocessString('%s')", str);
      if (str != _talkBuffer) {
            assert(strlen(str) < sizeof(_talkBuffer) - 1);
            strcpy(_talkBuffer, str);
      }
      char *p = _talkBuffer;
      while (*p) {
            if (*p == '\r') {
                  return _talkBuffer;
            }
            ++p;
      }
      p = _talkBuffer;
      Screen::FontId curFont = _screen->setFont(Screen::FID_8_FNT);
      _screen->_charWidth = -2;
      int textWidth = _screen->getTextWidth(p);
      _screen->_charWidth = 0;
      if (textWidth > 176) {
            if (textWidth > 352) {
                  int count = getCharLength(p, textWidth / 3);
                  int offs = dropCRIntoString(p, count);
                  p += count + offs;
                  _screen->_charWidth = -2;
                  textWidth = _screen->getTextWidth(p);
                  _screen->_charWidth = 0;
                  count = getCharLength(p, textWidth / 2);
                  dropCRIntoString(p, count);
            } else {
                  int count = getCharLength(p, textWidth / 2);
                  dropCRIntoString(p, count);
            }
      }
      _screen->setFont(curFont);
      return _talkBuffer;
}

int TextDisplayer::buildMessageSubstrings(const char *str) {
      debugC(9, kDebugLevelMain, "TextDisplayer::buildMessageSubstrings('%s')", str);
      int currentLine = 0;
      int pos = 0;
      while (*str) {
            if (*str == '\r') {
                  assert(currentLine < TALK_SUBSTRING_NUM);
                  _talkSubstrings[currentLine * TALK_SUBSTRING_LEN + pos] = '\0';
                  ++currentLine;
                  pos = 0;
            } else {
                  _talkSubstrings[currentLine * TALK_SUBSTRING_LEN + pos] = *str;
                  ++pos;
                  if (pos > TALK_SUBSTRING_LEN - 2) {
                        pos = TALK_SUBSTRING_LEN - 2;
                  }
            }
            ++str;
      }
      _talkSubstrings[currentLine * TALK_SUBSTRING_LEN + pos] = '\0';
      return currentLine + 1;
}

int TextDisplayer::getWidestLineWidth(int linesCount) {
      debugC(9, kDebugLevelMain, "TextDisplayer::getWidestLineWidth(%d)", linesCount);
      int maxWidth = 0;
      Screen::FontId curFont = _screen->setFont(Screen::FID_8_FNT);
      _screen->_charWidth = -2;
      for (int l = 0; l < linesCount; ++l) {
            int w = _screen->getTextWidth(&_talkSubstrings[l * TALK_SUBSTRING_LEN]);
            if (maxWidth < w) {
                  maxWidth = w;
            }
      }
      _screen->setFont(curFont);
      _screen->_charWidth = 0;
      return maxWidth;
}

void TextDisplayer::calcWidestLineBounds(int &x1, int &x2, int w, int cx) {
      debugC(9, kDebugLevelMain, "TextDisplayer::calcWidestLineBounds(%d, %d)", w, cx);
      x1 = cx - w / 2;
      if (x1 + w >= Screen::SCREEN_W - 12) {
            x1 = Screen::SCREEN_W - 12 - w - 1;
      } else if (x1 < 12) {
            x1 = 12;
      }
      x2 = x1 + w + 1;
}

void TextDisplayer::restoreTalkTextMessageBkgd(int srcPage, int dstPage) {
      debugC(9, kDebugLevelMain, "TextDisplayer::restoreTalkTextMessageBkgd(%d, %d)", srcPage, dstPage);
      if (_talkMessagePrinted) {
            _talkMessagePrinted = false;
            _screen->copyRegion(_talkCoords.x, _talkCoords.y, _talkCoords.x, _talkMessageY, _talkCoords.w, _talkMessageH, srcPage, dstPage);
      }
}

void TextDisplayer::printTalkTextMessage(const char *text, int x, int y, uint8 color, int srcPage, int dstPage) {
      debugC(9, kDebugLevelMain, "TextDisplayer::printTalkTextMessage('%s', %d, %d, %d, %d, %d)", text, x, y, color, srcPage, dstPage);
      char *str = preprocessString(text);
      int lineCount = buildMessageSubstrings(str);
      int top = y - lineCount * 10;
      if (top < 0) {
            top = 0;
      }
      _talkMessageY = top;
      _talkMessageH = lineCount * 10;
      int w = getWidestLineWidth(lineCount);
      int x1, x2;
      calcWidestLineBounds(x1, x2, w, x);
      _talkCoords.x = x1;
      _talkCoords.w = w + 2;
      _screen->copyRegion(_talkCoords.x, _talkMessageY, _talkCoords.x, _talkCoords.y, _talkCoords.w, _talkMessageH, srcPage, dstPage);
      int curPage = _screen->_curPage;
      _screen->_curPage = srcPage;
      for (int i = 0; i < lineCount; ++i) {
            top = i * 10 + _talkMessageY;
            char *msg = &_talkSubstrings[i * TALK_SUBSTRING_LEN];
            int left = getCenterStringX(msg, x1, x2);
            printText(msg, left, top, color, 0xC, 0);
      }
      _screen->_curPage = curPage;
      _talkMessagePrinted = true;
}

void TextDisplayer::printText(const char *str, int x, int y, uint8 c0, uint8 c1, uint8 c2) {
      debugC(9, kDebugLevelMain, "TextDisplayer::printText('%s', %d, %d, %d, %d, %d)", str, x, y, c0, c1, c2);
      uint8 colorMap[] = { 0, 15, 12, 12 };
      colorMap[3] = c1;
      _screen->setTextColor(colorMap, 0, 3);
      Screen::FontId curFont = _screen->setFont(Screen::FID_8_FNT);
      _screen->_charWidth = -2;
      _screen->printText(str, x, y, c0, c2);
      _screen->_charWidth = 0;
      _screen->setFont(curFont);
}

void TextDisplayer::printCharacterText(const char *text, int8 charNum, int charX) {
      debugC(9, kDebugLevelMain, "TextDisplayer::printCharacterText('%s', %d, %d)", text, charNum, charX);
      uint8 colorTable[] = {0x0F, 0x9, 0x0C9, 0x80, 0x5, 0x81, 0x0E, 0xD8, 0x55, 0x3A, 0x3a};
      int top, left, x1, x2, w, x;
      char *msg;

      uint8 color = colorTable[charNum];
      text = preprocessString(text);
      int lineCount = buildMessageSubstrings(text);
      w = getWidestLineWidth(lineCount);
      x = charX;
      calcWidestLineBounds(x1, x2, w, x);

      for (int i = 0; i < lineCount; ++i) {
            top = i * 10 + _talkMessageY;
            msg = &_talkSubstrings[i * TALK_SUBSTRING_LEN];
            left = getCenterStringX(msg, x1, x2);
            printText(msg, left, top, color, 0xC, 0);
      }
}
} // end of namespace Kyra

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