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scummvm/engines/access/player.cpp

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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 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.
*
*/
#include "common/algorithm.h"
#include "common/textconsole.h"
#include "access/player.h"
#include "access/access.h"
#include "access/resources.h"
#include "access/amazon/amazon_player.h"
#include "access/martian/martian_player.h"
namespace Access {
Player *Player::init(AccessEngine *vm) {
switch (vm->getGameID()) {
case GType_Amazon:
vm->_playerDataCount = 8;
return new Amazon::AmazonPlayer(vm);
case GType_MartianMemorandum:
vm->_playerDataCount = 10;
return new Martian::MartianPlayer(vm);
default:
vm->_playerDataCount = 8;
return new Player(vm);
}
}
Player::Player(AccessEngine *vm) : Manager(vm), ImageEntry() {
_playerSprites = nullptr;
_playerSprites1 = nullptr;
_manPal1 = nullptr;
_frameNumber = 0;
_rawTempL = 0;
_rawXTemp = 0;
_rawYTempL = 0;
_rawYTemp = 0;
_playerXLow = 0;
_playerX = 0;
_playerYLow = 0;
_playerY = 0;
_frame = 0;
_playerOff = false;
_playerMove = false;
_leftDelta = _rightDelta = 0;
_upDelta = _downDelta = 0;
_scrollConst = 0;
_scrollFlag = false;
_scrollThreshold = 0;
_scrollAmount = 0;
_scrollEnd = 0;
_roomNumber = 0;
_collideFlag = false;
_move = NONE;
_playerDirection = NONE;
_xFlag = _yFlag = 0;
_inactiveYOff = 0;
_sideWalkMin = _sideWalkMax = 0;
_upWalkMin = _upWalkMax = 0;
_downWalkMin = _downWalkMax = 0;
_diagUpWalkMin = _diagUpWalkMax = 0;
_diagDownWalkMin = _diagDownWalkMax = 0;
_walkOffRight = _walkOffLeft = nullptr;
_walkOffUp = _walkOffDown = nullptr;
_walkOffUR = _walkOffDR = nullptr;
_walkOffUL = _walkOffDL = nullptr;
}
Player::~Player() {
delete _playerSprites;
delete[] _manPal1;
delete[] _walkOffRight;
delete[] _walkOffLeft;
delete[] _walkOffUp;
delete[] _walkOffDown;
delete[] _walkOffUR;
delete[] _walkOffDR;
delete[] _walkOffUL;
delete[] _walkOffDL;
}
void Player::load() {
int dataCount = _vm->_playerDataCount;
_walkOffRight = new int[dataCount];
_walkOffLeft = new int[dataCount];
_walkOffUp = new int[dataCount];
_walkOffDown = new int[dataCount];
_walkOffUR = new Common::Point[dataCount];
_walkOffDR = new Common::Point[dataCount];
_walkOffUL = new Common::Point[dataCount];
_walkOffDL = new Common::Point[dataCount];
_playerOffset.x = _vm->_screen->_scaleTable1[25];
_playerOffset.y = _vm->_screen->_scaleTable1[67];
_leftDelta = -3;
_rightDelta = 33;
_upDelta = 5;
_downDelta = -10;
_scrollConst = 5;
_sideWalkMin = 0;
_sideWalkMax = 7;
_upWalkMin = 16;
_upWalkMax = 23;
_downWalkMin = 8;
_downWalkMax = 15;
_diagUpWalkMin = 0;
_diagUpWalkMax = 7;
_diagDownWalkMin = 0;
_diagDownWalkMax = 7;
_playerSprites = _playerSprites1;
if (_manPal1) {
// Those values are from MM as Amazon doesn't use it
Common::copy(_manPal1 + 0x2A0, _manPal1 + 0x2A0 + 0x42, _vm->_screen->_manPal);
} else {
Common::fill(_vm->_screen->_manPal, _vm->_screen->_manPal + 0x60, 0);
}
}
void Player::loadTexPalette() {
Resource *texPal = _vm->_files->loadFile("TEXPAL.COL");
int size = texPal->_size;
assert(size == 768);
_manPal1 = new byte[size];
memcpy(_manPal1, texPal->data(), size);
}
void Player::loadSprites(const Common::String &name) {
freeSprites();
Resource *data = _vm->_files->loadFile(name);
#if 0
Common::DumpFile *outFile = new Common::DumpFile();
Common::String outName = name + ".dump";
outFile->open(outName);
outFile->write(data->data(), data->_size);
outFile->finalize();
outFile->close();
#endif
_playerSprites1 = new SpriteResource(_vm, data);
delete data;
}
void Player::freeSprites() {
delete _playerSprites;
_playerSprites1 = nullptr;
_playerSprites = nullptr;
}
void Player::removeSprite1() {
if (_playerSprites1) {
delete _playerSprites1;
_playerSprites1 = nullptr;
}
}
void Player::calcManScale() {
if (!_vm->_manScaleOff) {
_vm->_scale = ((((_rawPlayer.y - _vm->_scaleMaxY + _vm->_scaleN1) *
_vm->_scaleT1 + (_vm->_scaleH2 << 8)) & 0xff00) / _vm->_scaleH1 * _vm->_scaleI) >> 8;
_vm->_screen->setScaleTable(_vm->_scale);
_playerOffset.x = _vm->_screen->_scaleTable1[20];
_playerOffset.y = _vm->_screen->_scaleTable1[67];
_inactiveYOff = _playerOffset.y;
}
}
void Player::walk() {
_collideFlag = false;
_playerDirection = NONE;
if (_playerOff)
return;
else if (_vm->_timers[0]._flag) {
plotCom3();
return;
}
++_vm->_timers[0]._flag;
switch (_move) {
case UP:
_playerMove = false;
walkUp();
break;
case DOWN:
_playerMove = false;
walkDown();
break;
case LEFT:
_playerMove = false;
walkLeft();
break;
case RIGHT:
_playerMove = false;
walkRight();
break;
case UPLEFT:
_playerMove = false;
walkUpLeft();
break;
case DOWNLEFT:
_playerMove = false;
walkDownLeft();
break;
case UPRIGHT:
_playerMove = false;
walkUpRight();
break;
case DOWNRIGHT:
_playerMove = false;
walkDownRight();
break;
default:
checkMove();
break;
}
}
void Player::calcPlayer() {
Screen &scr = *_vm->_screen;
scr._bufferStart.x = (_vm->_scrollCol << 4) + _vm->_scrollX;
scr._bufferStart.y = (_vm->_scrollRow << 4) + _vm->_scrollY;
_playerX = _rawPlayer.x - scr._bufferStart.x;
_playerY = _rawPlayer.y - scr._bufferStart.y;
}
void Player::walkUp() {
if (_frame > _upWalkMax || _frame < _upWalkMin)
_frame = _upWalkMin;
_playerDirection = UP;
int walkOff = _walkOffUp[_frame - _upWalkMin];
int tempL = _rawPlayerLow.y - _vm->_screen->_scaleTable2[walkOff];
_rawYTempL = (byte)tempL;
int yTemp = _rawPlayer.y - _vm->_screen->_scaleTable1[walkOff] -
(tempL < 0 ? 1 : 0);
_rawYTemp = yTemp;
_rawXTemp = _rawPlayer.x;
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.y = _rawYTemp;
_rawPlayerLow.y = _rawYTempL;
calcManScale();
// This code looks totally useless as 'si' is unconditionally set in plotCom
//if (_vm->_currentMan != 3 && (_frame == 17 || _frame == 21))
// warning("TODO: walkUp - si = 0?");
if (++_frame > _upWalkMax)
_frame = _upWalkMin;
plotCom(0);
}
}
void Player::walkDown() {
if (_frame > _downWalkMax || _frame < _downWalkMin)
_frame = _downWalkMin;
_playerDirection = DOWN;
int walkOff = _walkOffDown[_frame - _downWalkMin];
int tempL = _vm->_screen->_scaleTable2[walkOff] + _rawPlayerLow.y;
_rawYTempL = (byte)tempL;
_rawYTemp = _vm->_screen->_scaleTable1[walkOff] + _rawPlayer.y + (tempL >= 0x100 ? 1 : 0);
_rawXTemp = _rawPlayer.x;
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.y = _rawYTemp;
_rawPlayerLow.y = _rawYTempL;
calcManScale();
// This code looks totally useless as 'si' is unconditionally set in plotCom
//if (_vm->_currentMan != 3 && (_frame == 10 || _frame == 14))
// warning("TODO: walkDown - si = 0?");
if (++_frame > _downWalkMax)
_frame = _downWalkMin;
plotCom(0);
}
}
void Player::walkLeft() {
if (_frame > _sideWalkMax || _frame < _sideWalkMin)
_frame = _sideWalkMin;
_playerDirection = LEFT;
bool flag = _scrollEnd == 1;
if (!flag) {
calcPlayer();
flag = (_playerX - _vm->_screen->_scaleTable1[_scrollConst] -
_vm->_player->_scrollThreshold) > 0;
}
if (flag) {
int walkOffset = _walkOffLeft[_frame - _sideWalkMin];
int tempL = _rawPlayerLow.x - _vm->_screen->_scaleTable2[walkOffset];
_rawTempL = (byte)tempL;
_rawXTemp = _rawPlayer.x - _vm->_screen->_scaleTable1[walkOffset] -
(tempL < 0 ? 1 : 0);
} else {
_rawXTemp = _rawPlayer.x - _vm->_screen->_scaleTable1[_scrollConst];
}
_rawYTemp = _rawPlayer.y;
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.x = _rawXTemp;
_rawPlayerLow.x = _rawTempL;
++_frame;
// This code looks totally useless as 'si' is unconditionally set in plotCom1
//if (_vm->_currentMan != 3 && (_frame == 1 || _frame == 5))
// warning("TODO: walkLeft - si = 0?");
if (_frame > _sideWalkMax)
_frame = _sideWalkMin;
plotCom1();
}
}
void Player::walkRight() {
if (_frame > _sideWalkMax || _frame < _sideWalkMin)
_frame = _sideWalkMin;
_playerDirection = RIGHT;
bool flag = _scrollEnd == 2;
if (!flag) {
calcPlayer();
flag = (_vm->_screen->_clipWidth - _playerX - _vm->_screen->_scaleTable1[_scrollConst] -
_vm->_player->_scrollThreshold) > 0;
}
if (flag) {
int walkOffset = _walkOffRight[_frame - _sideWalkMin];
int tempL = _rawPlayerLow.x + _vm->_screen->_scaleTable2[walkOffset];
_rawTempL = (byte)tempL;
_rawXTemp = _rawPlayer.x + _vm->_screen->_scaleTable1[walkOffset] +
(tempL >= 0x100 ? 1 : 0);
} else {
_rawXTemp = _rawPlayer.x + _vm->_screen->_scaleTable1[_scrollConst];
}
_rawYTemp = _rawPlayer.y;
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.x = _rawXTemp;
_rawPlayerLow.x = _rawTempL;
++_frame;
// Useless check removed
if (_frame > _sideWalkMax)
_frame = _sideWalkMin;
plotCom0();
}
}
void Player::walkUpLeft() {
if (_frame > _diagUpWalkMax || _frame < _diagUpWalkMin)
_frame = _diagUpWalkMin;
_playerDirection = UPLEFT;
int walkOffset, tempL;
bool flag = _scrollEnd == 1;
if (!flag) {
calcPlayer();
flag = (_playerX - _vm->_screen->_scaleTable1[_scrollConst] -
_vm->_player->_scrollThreshold) > 0;
}
if (flag) {
walkOffset = _walkOffUL[_frame - _diagUpWalkMin].x;
tempL = _rawPlayerLow.x - _vm->_screen->_scaleTable2[walkOffset];
_rawTempL = (byte)tempL;
_rawXTemp = _rawPlayer.x - _vm->_screen->_scaleTable1[walkOffset] -
(tempL < 0 ? 1 : 0);
} else {
_rawXTemp = _rawPlayer.x - _vm->_screen->_scaleTable1[_scrollConst];
}
walkOffset = _walkOffUL[_frame - _diagUpWalkMin].y;
tempL = _rawPlayerLow.y - _vm->_screen->_scaleTable2[walkOffset];
_rawYTempL = (byte)tempL;
_rawYTemp = _rawPlayer.y - _vm->_screen->_scaleTable1[walkOffset] -
(tempL < 0 ? 1 : 0);
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.x = _rawXTemp;
_rawPlayer.y = _rawYTemp;
_rawPlayerLow.x = _rawTempL;
_rawPlayerLow.y = _rawYTempL;
++_frame;
calcManScale();
// This code looks totally useless as 'si' is unconditionally set in plotCom1
//if (_vm->_currentMan != 3 && (_frame == 1 || _frame == 5))
// warning("TODO: walkUpLeft - si = 0?");
if (_frame > _diagUpWalkMax)
_frame = _diagUpWalkMin;
plotCom1();
}
}
void Player::walkDownLeft() {
if (_frame > _diagDownWalkMax || _frame < _diagDownWalkMin)
_frame = _diagDownWalkMin;
_playerDirection = DOWNLEFT;
int walkOffset, tempL;
bool flag = _scrollEnd == 1;
if (!flag) {
calcPlayer();
flag = (_playerX - _vm->_screen->_scaleTable1[_scrollConst] -
_vm->_player->_scrollThreshold) > 0;
}
if (flag) {
walkOffset = _walkOffDL[_frame - _sideWalkMin].x;
tempL = _rawPlayerLow.x - _vm->_screen->_scaleTable2[walkOffset];
_rawTempL = (byte)tempL;
_rawXTemp = _rawPlayer.x - _vm->_screen->_scaleTable1[walkOffset] -
(tempL < 0 ? 1 : 0);
} else {
_rawXTemp = _rawPlayer.x - _vm->_screen->_scaleTable1[_scrollConst];
}
walkOffset = _walkOffDL[_frame - _diagDownWalkMin].y;
tempL = _rawPlayerLow.y + _vm->_screen->_scaleTable2[walkOffset];
_rawYTempL = (byte)tempL;
_rawYTemp = _rawPlayer.y + _vm->_screen->_scaleTable1[walkOffset] +
(tempL >= 0x100 ? 1 : 0);
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.x = _rawXTemp;
_rawPlayer.y = _rawYTemp;
_rawPlayerLow.x = _rawTempL;
_rawPlayerLow.y = _rawYTempL;
++_frame;
calcManScale();
// This code looks totally useless as 'si' is unconditionally set in plotCom1
//if (_vm->_currentMan != 3 && (_frame == 1 || _frame == 5))
// warning("TODO: walkDownLeft - si = 0?");
if (_frame > _diagDownWalkMax)
_frame = _diagDownWalkMin;
plotCom1();
}
}
void Player::walkUpRight() {
if (_frame > _diagUpWalkMax || _frame < _diagUpWalkMin)
_frame = _diagUpWalkMin;
_playerDirection = UPRIGHT;
int walkOffset, tempL;
bool flag = _scrollEnd == 1;
if (!flag) {
calcPlayer();
flag = (_vm->_screen->_clipWidth - _playerX - _vm->_screen->_scaleTable1[_scrollConst] -
_vm->_player->_scrollThreshold) > 0;
}
if (flag) {
walkOffset = _walkOffUR[_frame - _diagUpWalkMin].x;
tempL = _rawPlayerLow.x + _vm->_screen->_scaleTable2[walkOffset];
_rawTempL = (byte)tempL;
_rawXTemp = _rawPlayer.x + _vm->_screen->_scaleTable1[walkOffset] +
(tempL >= 0x100 ? 1 : 0);
} else {
_rawXTemp = _rawPlayer.x + _vm->_screen->_scaleTable1[_scrollConst];
}
walkOffset = _walkOffUL[_frame - _diagUpWalkMin].y;
tempL = _rawPlayerLow.y - _vm->_screen->_scaleTable2[walkOffset];
_rawYTempL = (byte)tempL;
_rawYTemp = _rawPlayer.y - _vm->_screen->_scaleTable1[walkOffset] -
(tempL < 0 ? 1 : 0);
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.x = _rawXTemp;
_rawPlayer.y = _rawYTemp;
_rawPlayerLow.x = _rawTempL;
_rawPlayerLow.y = _rawYTempL;
++_frame;
calcManScale();
// This code looks totally useless as 'si' is unconditionally set in plotCom
//if (_vm->_currentMan != 3 && (_frame == 1 || _frame == 5))
// warning("TODO: walkUpRight - si = 0?");
if (_frame > _diagUpWalkMax)
_frame = _diagUpWalkMin;
plotCom(0);
}
}
void Player::walkDownRight() {
if (_frame > _diagDownWalkMax || _frame < _diagDownWalkMin)
_frame = _diagDownWalkMin;
_playerDirection = DOWNRIGHT;
int walkOffset, tempL;
bool flag = _scrollEnd == 2;
if (!flag) {
calcPlayer();
flag = (_vm->_screen->_clipWidth - _playerX - _vm->_screen->_scaleTable1[_scrollConst] -
_vm->_player->_scrollThreshold) > 0;
}
if (flag) {
walkOffset = _walkOffUR[_frame - _diagDownWalkMin].x;
tempL = _rawPlayerLow.x + _vm->_screen->_scaleTable2[walkOffset];
_rawTempL = (byte)tempL;
_rawXTemp = _rawPlayer.x + _vm->_screen->_scaleTable1[walkOffset] +
(tempL >= 0x100 ? 1 : 0);
} else {
_rawXTemp = _rawPlayer.x + _vm->_screen->_scaleTable1[_scrollConst];
}
walkOffset = _walkOffDR[_frame - _diagDownWalkMin].y;
tempL = _rawPlayerLow.y + _vm->_screen->_scaleTable2[walkOffset];
_rawYTempL = (byte)tempL;
_rawYTemp = _rawPlayer.y + _vm->_screen->_scaleTable1[walkOffset] +
(tempL >= 0x100 ? 1 : 0);
if (_vm->_room->codeWalls()) {
plotCom2();
} else {
_rawPlayer.x = _rawXTemp;
_rawPlayer.y = _rawYTemp;
_rawPlayerLow.x = _rawTempL;
_rawPlayerLow.y = _rawYTempL;
calcManScale();
// This code looks totally useless as 'si' is unconditionally set in plotCom1
//if (_vm->_currentMan != 3 && (_frame == 1 || _frame == 5))
// warning("TODO: walkDownRight - si = 0?");
++_frame;
if (_frame > _diagDownWalkMax)
_frame = _diagDownWalkMin;
plotCom(0);
}
}
void Player::checkMove() {
if (_playerMove) {
if (_xFlag == 0 && _yFlag == 0) {
int xp = (_playerOffset.x / 2) + _rawPlayer.x - _moveTo.x;
if (xp < 0)
xp = -xp;
int yp = _rawPlayer.y - _moveTo.y;
if (yp < 0)
yp = -yp;
if (xp >= yp)
_xFlag = 1;
else
_yFlag = 1;
}
if (_yFlag == 1) {
int yd = _rawPlayer.y - _moveTo.y;
if ((yd >= 0 && yd <= _upDelta) || (yd < 0 && -yd <= _upDelta)) {
++_yFlag;
if (_xFlag) {
_playerMove = false;
_xFlag = _yFlag = 0;
} else {
++_xFlag;
}
} else {
if (yd >= 0)
walkUp();
else
walkDown();
if (_collideFlag) {
_playerMove = false;
_xFlag = _yFlag = 0;
}
}
} else if (_xFlag == 1) {
int xd = (_playerOffset.x / 2) + _rawPlayer.x - _moveTo.x;
if ((xd >= 0 && xd <= -_leftDelta) || (xd < 0 && -xd <= -_leftDelta)) {
++_xFlag;
if (_yFlag) {
_playerMove = false;
_xFlag = _yFlag = 0;
}
} else {
if (xd >= 0)
walkLeft();
else
walkRight();
if (_collideFlag) {
_playerMove = false;
_xFlag = _yFlag = 0;
}
}
} else if (!_yFlag) {
++_yFlag;
} else {
_playerMove = false;
_xFlag = _yFlag = 0;
}
}
plotCom3();
}
void Player::plotCom(int flags) {
_flags &= ~IMGFLAG_BACKWARDS;
_flags &= ~IMGFLAG_UNSCALED;
_flags |= flags;
plotCom3();
}
void Player::plotCom0() {
plotCom(_vm->getGameID() == GType_Amazon ? 0 : IMGFLAG_BACKWARDS);
}
void Player::plotCom1() {
plotCom(_vm->getGameID() == GType_Amazon ? IMGFLAG_BACKWARDS : 0);
}
void Player::plotCom2() {
// WORKAROUND: Amazon has at least one cutscene with the player not properly turned off
if (!_playerOff && _spritesPtr != nullptr)
_vm->_images.addToList(*this);
}
void Player::plotCom3() {
// Update the base ImageEntry fields for the player
_position.x = _rawPlayer.x;
_position.y = _rawPlayer.y - _playerOffset.y;
_offsetY = _playerOffset.y;
_spritesPtr = _playerSprites;
_frameNumber = _frame;
plotCom2();
}
void Player::checkScrollUp() {
if ((_playerDirection == DOWNRIGHT || _playerDirection == DOWNLEFT ||
_playerDirection == DOWN) && (_vm->_screen->_clipHeight -
_playerY - _scrollThreshold) <= 0) {
// Scroll up
if (scrollUp()) {
_scrollEnd = 4;
_vm->_scrollY &= TILE_HEIGHT;
_scrollFlag = true;
}
}
}
void Player::checkScroll() {
_scrollFlag = false;
if (_playerDirection == NONE)
return;
if ((_playerDirection == UPLEFT || _playerDirection == DOWNLEFT ||
_playerDirection == LEFT) && _playerX <= _scrollThreshold) {
// Scroll right
if (!scrollRight()) {
if (_playerDirection == DOWNLEFT)
checkScrollUp();
return;
}
} else if ((_playerDirection == UPRIGHT || _playerDirection == DOWNRIGHT ||
_playerDirection == RIGHT) && (_vm->_screen->_clipWidth -
_playerX - _scrollThreshold) <= 0) {
// Scroll left
if (!scrollLeft()) {
if (_playerDirection == DOWNRIGHT)
checkScrollUp();
return;
}
}
if ((_playerDirection == UPRIGHT || _playerDirection == UPLEFT ||
_playerDirection == UP) && _playerY <= _scrollThreshold) {
scrollDown();
} else {
checkScrollUp();
}
}
bool Player::scrollUp(int forcedAmount) {
if (forcedAmount == -1)
_scrollAmount = -(_vm->_screen->_clipHeight - _playerY - _scrollThreshold);
else
_scrollAmount = forcedAmount;
if ((_vm->_scrollRow + _vm->_screen->_vWindowHeight) >=
_vm->_room->_playFieldHeight)
return true;
_scrollFlag = true;
_vm->_scrollY = _vm->_scrollY + _scrollAmount;
while (_vm->_scrollY >= TILE_HEIGHT && !_vm->shouldQuit()) {
_vm->_scrollY -= TILE_HEIGHT;
++_vm->_scrollRow;
_vm->_buffer1.moveBufferUp();
_vm->_room->buildRow(_vm->_scrollRow + _vm->_screen->_vWindowHeight,
_vm->_screen->_vWindowLinesTall);
if ((_vm->_scrollRow + _vm->_screen->_vWindowHeight) >=
_vm->_room->_playFieldHeight)
return true;
if (_vm->_scrollY <= TILE_HEIGHT)
return false;
}
return false;
}
bool Player::scrollDown(int forcedAmount) {
if (forcedAmount == -1)
_scrollAmount = -(_playerY - _scrollThreshold);
else
_scrollAmount = forcedAmount;
_scrollFlag = true;
_vm->_scrollY -= _scrollAmount;
if (_vm->_scrollY >= 0)
return true;
do {
_vm->_scrollY += TILE_HEIGHT;
if (--_vm->_scrollRow < 0)
break;
_vm->_buffer1.moveBufferDown();
_vm->_room->buildRow(_vm->_scrollRow, 0);
if (_vm->_scrollY >= 0)
return false;
} while (!_vm->shouldQuit());
_scrollEnd = 3;
_vm->_scrollY = 0;
_vm->_scrollRow = 0;
return true;
}
bool Player::scrollLeft(int forcedAmount) {
Screen &screen = *_vm->_screen;
if (forcedAmount == -1)
_scrollAmount = -(_vm->_screen->_clipWidth - _playerX - _scrollThreshold);
else
_scrollAmount = forcedAmount;
if ((_vm->_scrollCol + screen._vWindowWidth) == _vm->_room->_playFieldWidth) {
_scrollEnd = 2;
_vm->_scrollX = 0;
_scrollFlag = true;
return true;
} else {
_scrollFlag = true;
_vm->_scrollX = _vm->_scrollX + _scrollAmount;
do {
if (_vm->_scrollX < TILE_WIDTH)
return true;
_vm->_scrollX -= TILE_WIDTH;
++_vm->_scrollCol;
_vm->_buffer1.moveBufferLeft();
_vm->_room->buildColumn(_vm->_scrollCol + screen._vWindowWidth,
screen._vWindowBytesWide);
} while (!_vm->shouldQuit() && (_vm->_scrollX >= TILE_WIDTH));
return (_playerDirection == UPRIGHT);
}
}
bool Player::scrollRight(int forcedAmount) {
if (forcedAmount == -1)
_scrollAmount = -(_playerX - _scrollThreshold);
else
_scrollAmount = forcedAmount;
_scrollFlag = true;
_vm->_scrollX -= _scrollAmount;
if (_vm->_scrollX < 0) {
do {
_vm->_scrollX += TILE_WIDTH;
if (--_vm->_scrollCol < 0) {
_scrollEnd = true;
_vm->_scrollX = 0;
_vm->_scrollCol = 0;
return true;
}
_vm->_buffer1.moveBufferRight();
_vm->_room->buildColumn(_vm->_scrollCol, 0);
} while (!_vm->shouldQuit() && (_vm->_scrollX < 0));
return false;
}
return true;
}
void Player::synchronize(Common::Serializer &s) {
s.syncAsUint16LE(_roomNumber);
s.syncAsSint16LE(_rawPlayerLow.x);
s.syncAsSint16LE(_rawPlayer.x);
s.syncAsSint16LE(_rawPlayerLow.y);
s.syncAsSint16LE(_rawPlayer.y);
}
} // End of namespace Access
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