/* 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.
 *
 * $URL$
 * $Id$
 *
 */

#include "kyra/kyra.h"
#include "kyra/seqplayer.h"
#include "kyra/screen.h"
#include "kyra/resource.h"
#include "kyra/sound.h"
#include "kyra/sprites.h"
#include "kyra/wsamovie.h"
#include "kyra/animator.h"
#include "kyra/text.h"
#include "kyra/script.h"

#include "common/system.h"
#include "common/savefile.h"

namespace Kyra {

void KyraEngine::enterNewScene(int sceneId, int facing, int unk1, int unk2, int brandonAlive) {
	debugC(9, kDebugLevelMain, "KyraEngine::enterNewScene(%d, %d, %d, %d, %d)", sceneId, facing, unk1, unk2, brandonAlive);
	int unkVar1 = 1;
	_screen->hideMouse();
	_handleInput = false;
	_abortWalkFlag = false;
	_abortWalkFlag2 = false;
	// just used for cd audio version, it should only load the sfx music file there
	/*if (_currentCharacter->sceneId == 7 && sceneId == 24) {
		_newMusicTheme = 3;
	} else if (_currentCharacter->sceneId == 25 && sceneId == 109) {
		_newMusicTheme = 4;
	} else if (_currentCharacter->sceneId == 120 && sceneId == 37) {
		_newMusicTheme = 5;
	} else if (_currentCharacter->sceneId == 52 && sceneId == 199) {
		_newMusicTheme = 6;
	} else if (_currentCharacter->sceneId == 37 && sceneId == 120) {
		_newMusicTheme = 4;
	} else if (_currentCharacter->sceneId == 109 && sceneId == 25) {
		_newMusicTheme = 3;
	} else if (_currentCharacter->sceneId == 24 && sceneId == 7) {
		_newMusicTheme = 2;
	}
	if (_newMusicTheme != _curMusicTheme) {
		snd_playTheme(_newMusicTheme);
	}*/
	
	switch (_currentCharacter->sceneId) {
	case 1:
		if (sceneId == 0) {
			moveCharacterToPos(0, 0, _currentCharacter->x1, 84);
			unkVar1 = 0;
		}
		break;

	case 3:
		if (sceneId == 2) {
			moveCharacterToPos(0, 6, 155, _currentCharacter->y1);
			unkVar1 = 0;
		}
		break;

	case 26:
		if (sceneId == 27) {
			moveCharacterToPos(0, 6, 155, _currentCharacter->y1);
			unkVar1 = 0;
		}
		break;

	case 44:
		if (sceneId == 45) {
			moveCharacterToPos(0, 2, 192, _currentCharacter->y1);
			unkVar1 = 0;
		}
		break;

	default:
		break;
	}
	
	if (unkVar1 && unk1) {
		int xpos = _currentCharacter->x1;
		int ypos = _currentCharacter->y1;
		switch (facing) {
		case 0:
			ypos = _currentCharacter->y1 - 6;
			break;

		case 2:
			xpos = 336;
			break;

		case 4:
			ypos = 143;
			break;

		case 6:
			xpos = -16;
			break;

		default:
			break;
		}
		
		moveCharacterToPos(0, facing, xpos, ypos);
	}
	
	for (int i = 0; i < ARRAYSIZE(_movieObjects); ++i) {
		_movieObjects[i]->close();
	}
	
	if (!brandonAlive) {
		_scriptInterpreter->initScript(_scriptClick, _scriptClickData);
		_scriptInterpreter->startScript(_scriptClick, 5);
		while (_scriptInterpreter->validScript(_scriptClick)) {
			_scriptInterpreter->runScript(_scriptClick);
		}
	}
	
	memset(_entranceMouseCursorTracks, 0xFFFF, sizeof(uint16)*4);
	_currentCharacter->sceneId = sceneId;
	
	assert(sceneId < _roomTableSize);
	assert(_roomTable[sceneId].nameIndex < _roomFilenameTableSize);

	Room *currentRoom = &_roomTable[sceneId];
	
	if (_currentRoom != 0xFFFF && (_features & GF_TALKIE)) {
		char file[32];
		assert(_currentRoom < _roomTableSize);
		int tableId = _roomTable[_currentRoom].nameIndex;
		assert(tableId < _roomFilenameTableSize);
		strcpy(file, _roomFilenameTable[tableId]);
		strcat(file, ".VRM");
		_res->unloadPakFile(file);
	}
	
	_currentRoom = sceneId;
	
	int tableId = _roomTable[_currentCharacter->sceneId].nameIndex;
	char fileNameBuffer[32];
	strcpy(fileNameBuffer, _roomFilenameTable[tableId]);
	strcat(fileNameBuffer, ".DAT");
	_sprites->loadDAT(fileNameBuffer, _sceneExits);
	_sprites->setupSceneAnims();
	_scriptInterpreter->unloadScript(_scriptClickData);
	loadSceneMSC();
	
	if ((_features & GF_TALKIE)) {
		strcpy(fileNameBuffer, _roomFilenameTable[tableId]);
		strcat(fileNameBuffer, ".VRM");
		_res->loadPakFile(fileNameBuffer);
	}
	
	_walkBlockNorth = currentRoom->northExit;
	_walkBlockEast = currentRoom->eastExit;
	_walkBlockSouth = currentRoom->southExit;
	_walkBlockWest = currentRoom->westExit;
	
	if (_walkBlockNorth == 0xFFFF) {
		_screen->blockOutRegion(0, 0, 320, (_northExitHeight & 0xFF)+3);
	}
	if (_walkBlockEast == 0xFFFF) {
		_screen->blockOutRegion(312, 0, 8, 139);
	}
	if (_walkBlockSouth == 0xFFFF) {
		_screen->blockOutRegion(0, 135, 320, 8);
	}
	if (_walkBlockWest == 0xFFFF) {
		_screen->blockOutRegion(0, 0, 8, 139);
	}
	
	if (!brandonAlive) {
		updatePlayerItemsForScene();
	}

	startSceneScript(brandonAlive);
	setupSceneItems();
	
	initSceneData(facing, unk2, brandonAlive);
	
	_loopFlag2 = 0;
	_screen->showMouse();
	if (!brandonAlive) {
		seq_poisonDeathNow(0);
	}
	updateMousePointer(true);
	_changedScene = true;
}

void KyraEngine::transcendScenes(int roomIndex, int roomName) {
	debugC(9, kDebugLevelMain, "KyraEngine::transcendScenes(%d, %d)", roomIndex, roomName);
	assert(roomIndex < _roomTableSize);
	if (_features & GF_TALKIE) {
		char file[32];
		assert(roomIndex < _roomTableSize);
		int tableId = _roomTable[roomIndex].nameIndex;
		assert(tableId < _roomFilenameTableSize);
		strcpy(file, _roomFilenameTable[tableId]);
		strcat(file, ".VRM");
		_res->unloadPakFile(file);
	}
	_roomTable[roomIndex].nameIndex = roomName;
	_unkScreenVar2 = 1;
	_unkScreenVar3 = 1;
	_unkScreenVar1 = 0;
	_brandonPosX = _currentCharacter->x1;
	_brandonPosY = _currentCharacter->y1;
	enterNewScene(roomIndex, _currentCharacter->facing, 0, 0, 0);
	_unkScreenVar1 = 1;
	_unkScreenVar2 = 0;
	_unkScreenVar3 = 0;
}

void KyraEngine::setSceneFile(int roomIndex, int roomName) {
	debugC(9, kDebugLevelMain, "KyraEngine::setSceneFile(%d, %d)", roomIndex, roomName);
	assert(roomIndex < _roomTableSize);
	_roomTable[roomIndex].nameIndex = roomName;
}

void KyraEngine::moveCharacterToPos(int character, int facing, int xpos, int ypos) {
	debugC(9, kDebugLevelMain, "KyraEngine::moveCharacterToPos(%d, %d, %d, %d)", character, facing, xpos, ypos);
	Character *ch = &_characterList[character];
	ch->facing = facing;
	_screen->hideMouse();
	xpos = (int16)(xpos & 0xFFFC);
	ypos = (int16)(ypos & 0xFFFE);
	disableTimer(19);
	disableTimer(14);
	disableTimer(18);
	uint32 nextFrame = 0;
	switch (facing) {
	case 0:
		while (ypos < ch->y1) {
			nextFrame = getTimerDelay(5 + character) * _tickLength + _system->getMillis();
			setCharacterPositionWithUpdate(character);
			delayUntil(nextFrame, true);
		}
		break;
		
	case 2:	
		while (ch->x1 < xpos) {
			nextFrame = getTimerDelay(5 + character) * _tickLength + _system->getMillis();
			setCharacterPositionWithUpdate(character);
			delayUntil(nextFrame, true);
		}
		break;
		
	case 4:
		while (ypos > ch->y1) {
			nextFrame = getTimerDelay(5 + character) * _tickLength + _system->getMillis();
			setCharacterPositionWithUpdate(character);
			delayUntil(nextFrame, true);
		}
		break;
		
	case 6:
		while (ch->x1 > xpos) {
			nextFrame = getTimerDelay(5 + character) * _tickLength + _system->getMillis();
			setCharacterPositionWithUpdate(character);
			delayUntil(nextFrame, true);
		}
		break;
		
	default:
		break;
	}
	enableTimer(19);
	enableTimer(14);
	enableTimer(18);
	_screen->showMouse();
}

void KyraEngine::setCharacterPositionWithUpdate(int character) {
	debugC(9, kDebugLevelMain, "KyraEngine::setCharacterPositionWithUpdate(%d)", character);
	setCharacterPosition(character, 0);
	_sprites->updateSceneAnims();
	updateGameTimers();
	_animator->updateAllObjectShapes();
	updateTextFade();

	if (_currentCharacter->sceneId == 210) {
		updateKyragemFading();
	}
}

int KyraEngine::setCharacterPosition(int character, int *facingTable) {
	debugC(9, kDebugLevelMain, "KyraEngine::setCharacterPosition(%d, %p)", character, (const void *)facingTable);
	if (character == 0) {
		_currentCharacter->x1 += _charXPosTable[_currentCharacter->facing];
		_currentCharacter->y1 += _charYPosTable[_currentCharacter->facing];
		setCharacterPositionHelper(0, facingTable);
		return 1;
	} else {
		_characterList[character].x1 += _charXPosTable[_characterList[character].facing];
		_characterList[character].y1 += _charYPosTable[_characterList[character].facing];
		if (_characterList[character].sceneId == _currentCharacter->sceneId) {
			setCharacterPositionHelper(character, 0);
		}
	}
	return 0;
}

void KyraEngine::setCharacterPositionHelper(int character, int *facingTable) {
	debugC(9, kDebugLevelMain, "KyraEngine::setCharacterPositionHelper(%d, %p)", character, (const void *)facingTable);
	Character *ch = &_characterList[character];
	++ch->currentAnimFrame;
	int facing = ch->facing;
	if (facingTable) {
		if (*facingTable != *(facingTable - 1)) {
			if (*(facingTable - 1) == *(facingTable + 1)) {
				facing = getOppositeFacingDirection(*(facingTable - 1));
				*facingTable = *(facingTable - 1);
			}
		}
	}
	
	static uint8 facingIsZero[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
	static uint8 facingIsFour[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
	
	if (facing == 0) {
		++facingIsZero[character];
	} else {
		bool resetTables = false;
		if (facing != 7) {
			if (facing - 1 != 0) {
				if (facing != 4) {
					if (facing == 3 || facing == 5) {
						if (facingIsFour[character] > 2) {
							facing = 4;
						}
						resetTables = true;
					}
				} else {
					++facingIsFour[character];
				}
			} else {
				if (facingIsZero[character] > 2) {
					facing = 0;
				}
				resetTables = true;
			}
		} else {
			if (facingIsZero[character] > 2) {
				facing = 0;
			}
			resetTables = true;
		}
		
		if (resetTables) {
			facingIsZero[character] = 0;
			facingIsFour[character] = 0;
		}
	}
	
	static const uint16 maxAnimationFrame[] = {
		0x000F, 0x0031, 0x0055, 0x0000, 0x0000, 0x0000,
		0x0008, 0x002A, 0x004E, 0x0000, 0x0000, 0x0000,
		0x0022, 0x0046, 0x006A, 0x0000, 0x0000, 0x0000,
		0x001D, 0x0041, 0x0065, 0x0000, 0x0000, 0x0000,
		0x001F, 0x0043, 0x0067, 0x0000, 0x0000, 0x0000,
		0x0028, 0x004C, 0x0070, 0x0000, 0x0000, 0x0000,
		0x0023, 0x0047, 0x006B, 0x0000, 0x0000, 0x0000
	};
	
	if (facing == 0) {
		if (maxAnimationFrame[36+character] > ch->currentAnimFrame) {
			ch->currentAnimFrame = maxAnimationFrame[36+character];
		}
		if (maxAnimationFrame[30+character] < ch->currentAnimFrame) {
			ch->currentAnimFrame = maxAnimationFrame[36+character];
		}
	} else if (facing == 4) {
		if (maxAnimationFrame[18+character] > ch->currentAnimFrame) {
			ch->currentAnimFrame = maxAnimationFrame[18+character];
		}
		if (maxAnimationFrame[12+character] < ch->currentAnimFrame) {
			ch->currentAnimFrame = maxAnimationFrame[18+character];
		}
	} else {
		if (maxAnimationFrame[18+character] < ch->currentAnimFrame) {
			ch->currentAnimFrame = maxAnimationFrame[30+character];
		}
		if (maxAnimationFrame[character] == ch->currentAnimFrame) {
			ch->currentAnimFrame = maxAnimationFrame[6+character];
		}
		if (maxAnimationFrame[character] < ch->currentAnimFrame) {
			ch->currentAnimFrame = maxAnimationFrame[6+character]+2;
		}
	}
	
	if (character == 0) {
		if (_brandonStatusBit & 0x10)
			ch->currentAnimFrame = 88;
	}
	
	_animator->animRefreshNPC(character);
}

int KyraEngine::getOppositeFacingDirection(int dir) {
	debugC(9, kDebugLevelMain, "KyraEngine::getOppositeFacingDirection(%d)", dir);
	switch (dir) {
	case 0:
		return 2;
	case 1:
		return 1;
	case 3:
		return 7;
	case 4:
		return 6;
	case 5:
		return 5;
	case 6:
		return 4;
	case 7:
		return 3;
	default:
		break;
	}
	return 0;
}

void KyraEngine::loadSceneMSC() {
	assert(_currentCharacter->sceneId < _roomTableSize);
	int tableId = _roomTable[_currentCharacter->sceneId].nameIndex;
	assert(tableId < _roomFilenameTableSize);
	char fileNameBuffer[32];
	strcpy(fileNameBuffer, _roomFilenameTable[tableId]);
	strcat(fileNameBuffer, ".MSC");
	_screen->fillRect(0, 0, 319, 199, 0, 5);
	_screen->loadBitmap(fileNameBuffer, 3, 5, 0);
}

void KyraEngine::startSceneScript(int brandonAlive) {
	debugC(9, kDebugLevelMain, "KyraEngine::startSceneScript(%d)", brandonAlive);
	assert(_currentCharacter->sceneId < _roomTableSize);
	int tableId = _roomTable[_currentCharacter->sceneId].nameIndex;
	assert(tableId < _roomFilenameTableSize);
	char fileNameBuffer[32];
	strcpy(fileNameBuffer, _roomFilenameTable[tableId]);
	strcat(fileNameBuffer, ".CPS");
	_screen->loadBitmap(fileNameBuffer, 3, 3, 0);
	_sprites->loadSceneShapes();
	_exitListPtr = 0;
	
	_scaleMode = 1;	
	for (int i = 0; i < 145; ++i) {
		_scaleTable[i] = 256;
	}
	
	clearNoDropRects();
	_scriptInterpreter->initScript(_scriptClick, _scriptClickData);
	strcpy(fileNameBuffer, _roomFilenameTable[tableId]);
	strcat(fileNameBuffer, ".EMC");
	_scriptInterpreter->unloadScript(_scriptClickData);
	_scriptInterpreter->loadScript(fileNameBuffer, _scriptClickData, _opcodeTable, _opcodeTableSize, 0);
	_scriptInterpreter->startScript(_scriptClick, 0);
	_scriptClick->variables[0] = _currentCharacter->sceneId;
	_scriptClick->variables[7] = brandonAlive;
	
	while (_scriptInterpreter->validScript(_scriptClick)) {
		_scriptInterpreter->runScript(_scriptClick);
	}
}

void KyraEngine::initSceneData(int facing, int unk1, int brandonAlive) {
	debugC(9, kDebugLevelMain, "KyraEngine::initSceneData(%d, %d, %d)", facing, unk1, brandonAlive);
	
	int16 xpos2 = 0;
	int setFacing = 1;
	
	int16 xpos = 0, ypos = 0;
	
	if (_brandonPosX == -1 && _brandonPosY == -1) {
		switch (facing + 1) {
		case 0:
			xpos = ypos = -1;
			break;

		case 1: case 2: case 8:
			xpos = _sceneExits.southXPos;
			ypos = _sceneExits.southYPos;
			break;

		case 3:
			xpos = _sceneExits.westXPos;
			ypos = _sceneExits.westYPos;
			break;

		case 4: case 5: case 6:
			xpos = _sceneExits.northXPos;
			ypos = _sceneExits.northYPos;
			break;

		case 7:
			xpos = _sceneExits.eastXPos;
			ypos = _sceneExits.eastYPos;
			break;

		default:
			break;
		}
		
		if ((uint8)(_northExitHeight & 0xFF) + 2 >= ypos) {
			ypos = (_northExitHeight & 0xFF) + 4;
		}
		if (xpos >= 308) {
			xpos = 304;
		}
		if ((uint8)(_northExitHeight >> 8) - 2 <= ypos) {
			ypos = (_northExitHeight >> 8) - 4;
		}
		if (xpos <= 12) {
			xpos = 16;
		}
	}
	
	if (_brandonPosX > -1) {
		xpos = _brandonPosX;
	}
	if (_brandonPosY > -1) {
		ypos = _brandonPosY;
	}
	
	int16 ypos2 = 0;
	if (_brandonPosX > -1 && _brandonPosY > -1) {
		switch (_currentCharacter->sceneId) {
		case 1:
			_currentCharacter->x1 = xpos;
			_currentCharacter->x2 = xpos;
			_currentCharacter->y1 = ypos;
			_currentCharacter->y2 = ypos;
			facing = 4;
			xpos2 = 192;
			ypos2 = 104;
			setFacing = 0;
			unk1 = 1;
			break;

		case 3:
			_currentCharacter->x1 = xpos;
			_currentCharacter->x2 = xpos;
			_currentCharacter->y1 = ypos;
			_currentCharacter->y2 = ypos;
			facing = 2;
			xpos2 = 204;
			ypos2 = 94;
			setFacing = 0;
			unk1 = 1;
			break;

		case 26:
			_currentCharacter->x1 = xpos;
			_currentCharacter->x2 = xpos;
			_currentCharacter->y1 = ypos;
			_currentCharacter->y2 = ypos;
			facing = 2;
			xpos2 = 192;
			ypos2 = 128;
			setFacing = 0;
			unk1 = 1;
			break;

		case 44:
			_currentCharacter->x1 = xpos;
			_currentCharacter->x2 = xpos;
			_currentCharacter->y1 = ypos;
			_currentCharacter->y2 = ypos;
			facing = 6;
			xpos2 = 156;
			ypos2 = 96;
			setFacing = 0;
			unk1 = 1;
			break;

		case 37:
			_currentCharacter->x1 = xpos;
			_currentCharacter->x2 = xpos;
			_currentCharacter->y1 = ypos;
			_currentCharacter->y2 = ypos;
			facing = 2;
			xpos2 = 148;
			ypos2 = 114;
			setFacing = 0;
			unk1 = 1;
			break;

		default:
			break;
		}
	}
	
	_brandonPosX = _brandonPosY = -1;
	
	if (unk1 && setFacing) {
		ypos2 = ypos;
		xpos2 = xpos;
		switch (facing) {
		case 0:
			ypos = 142;
			break;

		case 2:
			xpos = -16;
			break;

		case 4:
			ypos = (uint8)(_northExitHeight & 0xFF) - 4;
			break;

		case 6:
			xpos = 336;
			break;

		default:
			break;
		}
	}
	
	xpos2 = (int16)(xpos2 & 0xFFFC);
	ypos2 = (int16)(ypos2 & 0xFFFE);
	xpos = (int16)(xpos & 0xFFFC);
	ypos = (int16)(ypos & 0xFFFE);
	_currentCharacter->facing = facing;
	_currentCharacter->x1 = xpos;
	_currentCharacter->x2 = xpos;
	_currentCharacter->y1 = ypos;
	_currentCharacter->y2 = ypos;
	
	initSceneObjectList(brandonAlive);
	
	if (unk1 && brandonAlive == 0) {
		moveCharacterToPos(0, facing, xpos2, ypos2);
	}
	
	_scriptClick->variables[4] = _itemInHand;
	_scriptClick->variables[7] = brandonAlive;
	_scriptInterpreter->startScript(_scriptClick, 3);
	while (_scriptInterpreter->validScript(_scriptClick)) {
		_scriptInterpreter->runScript(_scriptClick);
	}
}

void KyraEngine::initSceneObjectList(int brandonAlive) {
	debugC(9, kDebugLevelMain, "KyraEngine::initSceneObjectList(%d)", brandonAlive);
	for (int i = 0; i < 28; ++i) {
		_animator->actors()[i].active = 0;
	}
	
	int startAnimFrame = 0;
	
	AnimObject *curAnimState = _animator->actors();
	curAnimState->active = 1;
	curAnimState->drawY = _currentCharacter->y1;
	curAnimState->sceneAnimPtr = _shapes[4+_currentCharacter->currentAnimFrame];
	curAnimState->animFrameNumber = _currentCharacter->currentAnimFrame;
	startAnimFrame = _currentCharacter->currentAnimFrame-7;
	int xOffset = _defaultShapeTable[startAnimFrame].xOffset;
	int yOffset = _defaultShapeTable[startAnimFrame].yOffset;
	if (_scaleMode) {
		curAnimState->x1 = _currentCharacter->x1;
		curAnimState->y1 = _currentCharacter->y1;
		
		_animator->_brandonScaleX = _scaleTable[_currentCharacter->y1];
		_animator->_brandonScaleY = _scaleTable[_currentCharacter->y1];
		
		curAnimState->x1 += (_animator->_brandonScaleX * xOffset) >> 8;
		curAnimState->y1 += (_animator->_brandonScaleY * yOffset) >> 8;
	} else {
		curAnimState->x1 = _currentCharacter->x1 + xOffset;
		curAnimState->y1 = _currentCharacter->y1 + yOffset;
	}
	curAnimState->x2 = curAnimState->x1;
	curAnimState->y2 = curAnimState->y1;
	curAnimState->refreshFlag = 1;
	curAnimState->bkgdChangeFlag = 1;
	_animator->clearQueue();
	_animator->addObjectToQueue(curAnimState);
	
	int listAdded = 0;
	int addedObjects = 1;
	
	for (int i = 1; i < 5; ++i) {
		Character *ch = &_characterList[i];
		curAnimState = &_animator->actors()[addedObjects];
		if (ch->sceneId != _currentCharacter->sceneId) {
			curAnimState->active = 0;
			curAnimState->refreshFlag = 0;
			curAnimState->bkgdChangeFlag = 0;
			++addedObjects;
			continue;
		}
		
		curAnimState->drawY = ch->y1;
		curAnimState->sceneAnimPtr = _shapes[4+ch->currentAnimFrame];
		curAnimState->animFrameNumber = ch->currentAnimFrame;
		startAnimFrame = ch->currentAnimFrame-7;
		xOffset = _defaultShapeTable[startAnimFrame].xOffset;
		yOffset = _defaultShapeTable[startAnimFrame].yOffset;
		if (_scaleMode) {
			curAnimState->x1 = ch->x1;
			curAnimState->y1 = ch->y1;
		
			_animator->_brandonScaleX = _scaleTable[ch->y1];
			_animator->_brandonScaleY = _scaleTable[ch->y1];
		
			curAnimState->x1 += (_animator->_brandonScaleX * xOffset) >> 8;
			curAnimState->y1 += (_animator->_brandonScaleY * yOffset) >> 8;
		} else {
			curAnimState->x1 = ch->x1 + xOffset;
			curAnimState->y1 = ch->y1 + yOffset;
		}
		curAnimState->x2 = curAnimState->x1;
		curAnimState->y2 = curAnimState->y1;
		curAnimState->active = 1;
		curAnimState->refreshFlag = 1;
		curAnimState->bkgdChangeFlag = 1;
		
		if (ch->facing >= 1 && ch->facing <= 3) {
			curAnimState->flags |= 1;
		} else if (ch->facing >= 5 && ch->facing <= 7) {
			curAnimState->flags &= 0xFFFFFFFE;
		}
		
		_animator->addObjectToQueue(curAnimState);
		
		++addedObjects;
		++listAdded;
		if (listAdded < 2)
			i = 5;
	}
	
	for (int i = 0; i < 11; ++i) {
		curAnimState = &_animator->sprites()[i];

		if (_sprites->_anims[i].play) {
			curAnimState->active = 1;
			curAnimState->refreshFlag = 1;
			curAnimState->bkgdChangeFlag = 1;
		} else {
			curAnimState->active = 0;
			curAnimState->refreshFlag = 0;
			curAnimState->bkgdChangeFlag = 0;
		}
		curAnimState->height = _sprites->_anims[i].height;
		curAnimState->height2 = _sprites->_anims[i].height2;
		curAnimState->width = _sprites->_anims[i].width + 1;
		curAnimState->width2 = _sprites->_anims[i].width2;
		curAnimState->drawY = _sprites->_anims[i].drawY;
		curAnimState->x1 = curAnimState->x2 = _sprites->_anims[i].x;
		curAnimState->y1 = curAnimState->y2 = _sprites->_anims[i].y;
		curAnimState->background = _sprites->_anims[i].background;
		curAnimState->sceneAnimPtr = _sprites->_sceneShapes[_sprites->_anims[i].sprite];
		
		curAnimState->disable = _sprites->_anims[i].disable;
		
		if (_sprites->_anims[i].unk2)
			curAnimState->flags = 0x800;
		else
			curAnimState->flags = 0;

		if (_sprites->_anims[i].flipX)
			curAnimState->flags |= 0x1;
		
		_animator->addObjectToQueue(curAnimState);
	}
	
	for (int i = 0; i < 12; ++i) {
		curAnimState = &_animator->items()[i];
		Room *curRoom = &_roomTable[_currentCharacter->sceneId];
		byte curItem = curRoom->itemsTable[i];
		if (curItem != 0xFF) {
			curAnimState->drawY = curRoom->itemsYPos[i];
			curAnimState->sceneAnimPtr = _shapes[220+curItem];
			curAnimState->animFrameNumber = (int16)0xFFFF;
			curAnimState->y1 = curRoom->itemsYPos[i];
			curAnimState->x1 = curRoom->itemsXPos[i];
			
			curAnimState->x1 -= (_animator->fetchAnimWidth(curAnimState->sceneAnimPtr, _scaleTable[curAnimState->drawY])) >> 1;
			curAnimState->y1 -= _animator->fetchAnimHeight(curAnimState->sceneAnimPtr, _scaleTable[curAnimState->drawY]);
			
			curAnimState->x2 = curAnimState->x1;
			curAnimState->y2 = curAnimState->y1;
			
			curAnimState->active = 1;
			curAnimState->refreshFlag = 1;
			curAnimState->bkgdChangeFlag = 1;
			
			_animator->addObjectToQueue(curAnimState);
		} else {
			curAnimState->active = 0;
			curAnimState->refreshFlag = 0;
			curAnimState->bkgdChangeFlag = 0;
		}
	}
	
	_animator->preserveAnyChangedBackgrounds();
	curAnimState = _animator->actors();
	curAnimState->bkgdChangeFlag = 1;
	curAnimState->refreshFlag = 1;
	for (int i = 1; i < 28; ++i) {
		curAnimState = &_animator->objects()[i];
		if (curAnimState->active) {
			curAnimState->bkgdChangeFlag = 1;
			curAnimState->refreshFlag = 1;
		}
	}
	_animator->restoreAllObjectBackgrounds();
	_animator->preserveAnyChangedBackgrounds();
	_animator->prepDrawAllObjects();
	initSceneScreen(brandonAlive);
	_animator->copyChangedObjectsForward(0);
}

void KyraEngine::initSceneScreen(int brandonAlive) {
	// XXX (Pointless?) Palette stuff
	if (_unkScreenVar2 == 1) {
		_screen->shuffleScreen(8, 8, 304, 128, 2, 0, _unkScreenVar3, false);
	} else {
		_screen->copyRegion(8, 8, 8, 8, 304, 128, 2, 0);
	}
	_screen->updateScreen();
	// XXX More (pointless?) palette stuff

	if (!_scriptInterpreter->startScript(_scriptClick, 2))
		error("Could not start script function 2 of scene script");

	_scriptClick->variables[7] = brandonAlive;

	while (_scriptInterpreter->validScript(_scriptClick))
		_scriptInterpreter->runScript(_scriptClick);

	setTextFadeTimerCountdown(-1);
	if (_currentCharacter->sceneId == 210) {
		if (_itemInHand != -1)
			magicOutMouseItem(2, -1);
		
		_screen->hideMouse();
		for (int i = 0; i < 10; ++i) {
			if (_currentCharacter->inventoryItems[i] != 0xFF)
				magicOutMouseItem(2, i);
		}
		_screen->showMouse();
	}
}

int KyraEngine::handleSceneChange(int xpos, int ypos, int unk1, int frameReset) {
	debugC(9, kDebugLevelMain, "KyraEngine::handleSceneChange(%d, %d, %d, %d)", xpos, ypos, unk1, frameReset);
	if (queryGameFlag(0xEF)) {
		unk1 = 0;
	}
	int sceneId = _currentCharacter->sceneId;
	_pathfinderFlag = 0;
	if (xpos < 12) {
		if (_roomTable[sceneId].westExit != 0xFFFF) {
			xpos = 12;
			ypos = _sceneExits.westYPos;
			_pathfinderFlag = 7;
		}
	} else if(xpos >= 308) {
		if (_roomTable[sceneId].eastExit != 0xFFFF) {
			xpos = 307;
			ypos = _sceneExits.eastYPos;
			_pathfinderFlag = 13;
		}
	}
	
	if (ypos <= (_northExitHeight&0xFF)+2) {
		if (_roomTable[sceneId].northExit != 0xFFFF) {
			xpos = _sceneExits.northXPos;
			ypos = _northExitHeight & 0xFF;
			_pathfinderFlag = 14;
		}
	} else if (ypos >= 136) {
		if (_roomTable[sceneId].southExit != 0xFFFF) {
			xpos = _sceneExits.southXPos;
			ypos = 136;
			_pathfinderFlag = 11;
		}
	}
	
	int temp = xpos - _currentCharacter->x1;
	if (ABS(temp) < 4) {
		temp = ypos - _currentCharacter->y1;
		if (ABS(temp) < 2) {
			return 0;
		}
	}
	
	int x = (int16)(_currentCharacter->x1 & 0xFFFC);
	int y = (int16)(_currentCharacter->y1 & 0xFFFE);
	xpos = (int16)(xpos & 0xFFFC);
	ypos = (int16)(ypos & 0xFFFE);
	int ret = findWay(x, y, xpos, ypos, _movFacingTable, 150);
	_pathfinderFlag = 0;
	if (ret >= _lastFindWayRet) {
		_lastFindWayRet = ret;
	}
	if (ret == 0x7D00 || ret == 0) {
		return 0;
	}
	return processSceneChange(_movFacingTable, unk1, frameReset);
}

int KyraEngine::processSceneChange(int *table, int unk1, int frameReset) {
	debugC(9, kDebugLevelMain, "KyraEngine::processSceneChange(%p, %d, %d)", (const void *)table, unk1, frameReset);
	if (queryGameFlag(0xEF)) {
		unk1 = 0;
	}
	int *tableStart = table;
	_sceneChangeState = 0;
	_loopFlag2 = 0;
	bool running = true;
	int returnValue = 0;
	uint32 nextFrame = 0;
	_abortWalkFlag = false;
	_mousePressFlag = false;

	while (running) {
		if (_abortWalkFlag) {
			*table = 8;
			_currentCharacter->currentAnimFrame = 7;
			_animator->animRefreshNPC(0);
			_animator->updateAllObjectShapes();
			processInput(_mouseX, _mouseY);
			return 0;
		}
		bool forceContinue = false;
		switch (*table) {
		case 0: case 1: case 2:
		case 3: case 4: case 5:
		case 6: case 7:
			_currentCharacter->facing = getOppositeFacingDirection(*table);
			break;

		case 8:
			forceContinue = true;
			running = false;
			break;

		default:
			++table;
			forceContinue = true;
			break;
		}
		
		returnValue = changeScene(_currentCharacter->facing);
		if (returnValue) {
			running = false;
			_abortWalkFlag = false;
		}
		
		if (unk1) {
			if (_mousePressFlag) {
				running = false;
				_sceneChangeState = 1;
			}
		}
		
		if (forceContinue || !running) {
			continue;
		}
		
		int temp = 0;
		if (table == tableStart || table[1] == 8) {
			temp = setCharacterPosition(0, 0);
		} else {
			temp = setCharacterPosition(0, table);
		}
		if (temp) {
			++table;
		}
		
		nextFrame = getTimerDelay(5) * _tickLength + _system->getMillis();
		while (_system->getMillis() < nextFrame) {
			updateGameTimers();
			if (_currentCharacter->sceneId == 210) {
				updateKyragemFading();
				if (seq_playEnd() || _beadStateVar == 4 || _beadStateVar == 5) {
					*table = 8;
					running = false;
					break;
				}
			}
			if ((nextFrame - _system->getMillis()) >= 10)
				delay(10, true);
		}
	}
	
	if (frameReset && !(_brandonStatusBit & 2)) {
		_currentCharacter->currentAnimFrame = 7;
	}
	_animator->animRefreshNPC(0);
	_animator->updateAllObjectShapes();
	return returnValue;
}

int KyraEngine::changeScene(int facing) {
	debugC(9, kDebugLevelMain, "KyraEngine::changeScene(%d)", facing);
	if (queryGameFlag(0xEF)) {
		if (_currentCharacter->sceneId == 5) {
			return 0;
		}
	}
	
	int xpos = _charXPosTable[facing] + _currentCharacter->x1;
	int ypos = _charYPosTable[facing] + _currentCharacter->y1;
	
	if (xpos >= 12 && xpos <= 308) {
		if (!lineIsPassable(xpos, ypos))
			return false;
	}
	
	if (_exitListPtr) {
		int16 *ptr = _exitListPtr;
		// this loop should be only entered on time, seems to be some hack in the original
		while (true) {
			if (*ptr == -1)
				break;
			
			if (*ptr > _currentCharacter->x1 || _currentCharacter->y1 < ptr[1] || _currentCharacter->x1 > ptr[2] || _currentCharacter->y1 > ptr[3]) {
				ptr += 10;
				break;
			}
			_brandonPosX = ptr[6];
			_brandonPosY = ptr[7];
			uint16 sceneId = ptr[5];
			facing = ptr[4];
			int unk1 = ptr[8];
			int unk2 = ptr[9];
			if (sceneId == 0xFFFF) {
				switch (facing) {
				case 0:
					sceneId = _roomTable[_currentCharacter->sceneId].northExit;
					break;

				case 2:
					sceneId = _roomTable[_currentCharacter->sceneId].eastExit;
					break;

				case 4:
					sceneId = _roomTable[_currentCharacter->sceneId].southExit;
					break;

				case 6:
					sceneId = _roomTable[_currentCharacter->sceneId].westExit;
					break;

				default:
					break;
				}
			}
			
			_currentCharacter->facing = facing;
			_animator->animRefreshNPC(0);
			_animator->updateAllObjectShapes();
			enterNewScene(sceneId, facing, unk1, unk2, 0);
			resetGameFlag(0xEE);
			return 1;
		}
	}
	
	int returnValue = 0;
	facing = 0;
	
	if ((_northExitHeight & 0xFF) + 2 >= ypos || (_northExitHeight & 0xFF) + 2 >= _currentCharacter->y1) {
		facing = 0;
		returnValue = 1;
	}
	
	if (xpos >= 308 || (_currentCharacter->x1 + 4) >= 308) {
		facing = 2;
		returnValue = 1;
	}
	
	if (((_northExitHeight >> 8) & 0xFF) - 2 < ypos || ((_northExitHeight >> 8) & 0xFF) - 2 < _currentCharacter->y1) {
		facing = 4;
		returnValue = 1;
	}
	
	if (xpos <= 12 || _currentCharacter->y1 <= 12) {
		facing = 6;
		returnValue = 1;
	}
	
	if (!returnValue)
		return 0;
	
	uint16 sceneId = 0xFFFF;
	switch (facing) {
	case 0:
		sceneId = _roomTable[_currentCharacter->sceneId].northExit;
		break;

	case 2:
		sceneId = _roomTable[_currentCharacter->sceneId].eastExit;
		break;

	case 4:
		sceneId = _roomTable[_currentCharacter->sceneId].southExit;
		break;

	default:
		sceneId = _roomTable[_currentCharacter->sceneId].westExit;
		break;
	}
	
	if (sceneId == 0xFFFF)
		return 0;

	enterNewScene(sceneId, facing, 1, 1, 0);
	return returnValue;
}

void KyraEngine::setCharactersInDefaultScene() {
	static const uint32 defaultSceneTable[][4] = {
		{ 0xFFFF, 0x0004, 0x0003, 0xFFFF },
		{ 0xFFFF, 0x0022, 0xFFFF, 0x0000 },
		{ 0xFFFF, 0x001D, 0x0021, 0xFFFF },
		{ 0xFFFF, 0x0000, 0x0000, 0xFFFF }
	};
	
	for (int i = 1; i < 5; ++i) {
		Character *cur = &_characterList[i];
		//cur->field_20 = 0;
		const uint32 *curTable = defaultSceneTable[i-1];
		cur->sceneId = curTable[0];
		if (cur->sceneId == _currentCharacter->sceneId) {
			//++cur->field_20;
			cur->sceneId = curTable[1/*cur->field_20*/];
		}
		//cur->field_23 = curTable[cur->field_20+1];
	}
}

void KyraEngine::setCharactersPositions(int character) {
	static uint16 initXPosTable[] = {
		0x3200, 0x0024, 0x2230, 0x2F00, 0x0020, 0x002B,
		0x00CA, 0x00F0, 0x0082, 0x00A2, 0x0042
	};
	static uint8 initYPosTable[] = {
		0x00, 0xA2, 0x00, 0x42, 0x00,
		0x67, 0x67, 0x60, 0x5A, 0x71,
		0x76
	};
	assert(character < ARRAYSIZE(initXPosTable));
	Character *edit = &_characterList[character];
	edit->x1 = edit->x2 = initXPosTable[character];
	edit->y1 = edit->y2 = initYPosTable[character];
}

#pragma mark -
#pragma mark - Pathfinder
#pragma mark -

int KyraEngine::findWay(int x, int y, int toX, int toY, int *moveTable, int moveTableSize) {
	debugC(9, kDebugLevelMain, "KyraEngine::findWay(%d, %d, %d, %d, %p, %d)", x, y, toX, toY, (const void *)moveTable, moveTableSize);
	x &= 0xFFFC; toX &= 0xFFFC;
	y &= 0xFFFE; toY &= 0xFFFE;
	x = (int16)x; y = (int16)y; toX = (int16)toX; toY = (int16)toY;
	
	if (x == toY && y == toY) {
		moveTable[0] = 8;
		return 0;
	}
	
	int curX = x;
	int curY = y;
	int lastUsedEntry = 0;
	int tempValue = 0;
	int *pathTable1 = new int[0x7D0];
	int *pathTable2 = new int[0x7D0];
	assert(pathTable1 && pathTable2);
	
	while (true) {
		int newFacing = getFacingFromPointToPoint(x, y, toX, toY);
		changePosTowardsFacing(curX, curY, newFacing);
		
		if (curX == toX && curY == toY) {
			if (!lineIsPassable(curX, curY))
				break;
			moveTable[lastUsedEntry++] = newFacing;
			break;
		}
		
		if (lineIsPassable(curX, curY)) {
			if (lastUsedEntry == moveTableSize) {
				delete [] pathTable1;
				delete [] pathTable2;
				return 0x7D00;
			}
			// debug drawing
			//if (curX >= 0 && curY >= 0 && curX < 320 && curY < 200) {
			//	_screen->setPagePixel(0, curX, curY, 11);
			//	_screen->updateScreen();
			//	waitTicks(5);
			//}
			moveTable[lastUsedEntry++] = newFacing;
			x = curX;
			y = curY;
			continue;
		}
		
		int temp = 0;
		while (true) {
			newFacing = getFacingFromPointToPoint(curX, curY, toX, toY);
			changePosTowardsFacing(curX, curY, newFacing);
			// debug drawing
			//if (curX >= 0 && curY >= 0 && curX < 320 && curY < 200) {
			//	_screen->setPagePixel(0, curX, curY, 8);
			//	_screen->updateScreen();
			//	waitTicks(5);
			//}
			
			if (!lineIsPassable(curX, curY)) {
				if (curX != toX || curY != toY)
					continue;
			}
			
			if (curX == toX && curY == toY) {
				if (!lineIsPassable(curX, curY)) {
					tempValue = 0;
					temp = 0;
					break;
				}
			}
			
			temp = findSubPath(x, y, curX, curY, pathTable1, 1, 0x7D0);
			tempValue = findSubPath(x, y, curX, curY, pathTable2, 0, 0x7D0);
			if (curX == toX && curY == toY) {
				if (temp == 0x7D00 && tempValue == 0x7D00) {
					delete [] pathTable1;
					delete [] pathTable2;
					return 0x7D00;
				}
			}
			
			if (temp != 0x7D00 || tempValue != 0x7D00) {
				break;
			}
		}
		
		if (temp < tempValue) {
			if (lastUsedEntry + temp > moveTableSize) {
				delete [] pathTable1;
				delete [] pathTable2;
				return 0x7D00;
			}
			memcpy(&moveTable[lastUsedEntry], pathTable1, temp*sizeof(int));
			lastUsedEntry += temp;
		} else {
			if (lastUsedEntry + tempValue > moveTableSize) {
				delete [] pathTable1;
				delete [] pathTable2;
				return 0x7D00;
			}
			memcpy(&moveTable[lastUsedEntry], pathTable2, tempValue*sizeof(int));
			lastUsedEntry += tempValue;
		}
		x = curX;
		y = curY;
		if (curX == toX && curY == toY) {
			break;
		}
	}
	delete [] pathTable1;
	delete [] pathTable2;
	moveTable[lastUsedEntry] = 8;
	return getMoveTableSize(moveTable);
}

int KyraEngine::findSubPath(int x, int y, int toX, int toY, int *moveTable, int start, int end) {
	debugC(9, kDebugLevelMain, "KyraEngine::findSubPath(%d, %d, %d, %d, %p, %d, %d)", x, y, toX, toY, (const void *)moveTable, start, end);
	// only used for debug specific code
	//static uint16 unkTable[] = { 8, 5 };
	static const int8 facingTable1[] = {  7,  0,  1,  2,  3,  4,  5,  6,  1,  2,  3,  4,  5,  6,  7,  0 };
	static const int8 facingTable2[] = { -1,  0, -1,  2, -1,  4, -1,  6, -1,  2, -1,  4, -1,  6, -1,  0 };
	static const int8 facingTable3[] = {  2,  4,  4,  6,  6,  0,  0,  2,  6,  6,  0,  0,  2,  2,  4,  4 };
	static const int8 addPosTableX[] = { -1,  0, -1,  4, -1,  0, -1, -4, -1, -4, -1,  0, -1,  4, -1,  0 };
	static const int8 addPosTableY[] = { -1,  2, -1,  0, -1, -2, -1,  0, -1,  0, -1,  2, -1,  0, -1, -2 };
	
	// debug specific
	//++unkTable[start];
	//while (_screen->getPalette(0)[unkTable[start]] != 0x0F) {
	//	++unkTable[start];
	//}
	
	int xpos1 = x, xpos2 = x;
	int ypos1 = y, ypos2 = y;
	int newFacing = getFacingFromPointToPoint(x, y, toX, toY);
	int position = 0;
	
	while (position != end) {
		int newFacing2 = newFacing;
		while (true) {
			changePosTowardsFacing(xpos1, ypos1, facingTable1[start*8 + newFacing2]);
			if (!lineIsPassable(xpos1, ypos1)) {
				if (facingTable1[start*8 + newFacing2] == newFacing) {
					return 0x7D00;
				}
				newFacing2 = facingTable1[start*8 + newFacing2];
				xpos1 = x;
				ypos1 = y;
				continue;
			}
			newFacing = facingTable1[start*8 + newFacing2];
			break;
		}
		// debug drawing
		//if (xpos1 >= 0 && ypos1 >= 0 && xpos1 < 320 && ypos1 < 200) {
		//	_screen->setPagePixel(0, xpos1, ypos1, unkTable[start]);
		//	_screen->updateScreen();
		//	waitTicks(5);
		//}
		if (newFacing & 1) {
			int temp = xpos1 + addPosTableX[newFacing + start * 8];
			if (toX == temp) {
				temp = ypos1 + addPosTableY[newFacing + start * 8];
				if (toY == temp) {
					moveTable[position++] = facingTable2[newFacing + start * 8];
					return position;
				}
			}
		}
		moveTable[position++] = newFacing;
		x = xpos1;
		y = ypos1;
		if (x == toX && y == toY) {
			return position;
		}
		
		if (xpos1 == xpos2 && ypos1 == ypos2) {
			break;
		}
		
		newFacing = facingTable3[start*8 + newFacing];
	}
	return 0x7D00;
}

int KyraEngine::getFacingFromPointToPoint(int x, int y, int toX, int toY) {
	debugC(9, kDebugLevelMain, "KyraEngine::getFacingFromPointToPoint(%d, %d, %d, %d)", x, y, toX, toY);
	static const int facingTable[] = {
		1, 0, 1, 2, 3, 4, 3, 2, 7, 0, 7, 6, 5, 4, 5, 6
	};
	
	int facingEntry = 0;
	int ydiff = y - toY;
	if (ydiff < 0) {
		++facingEntry;
		ydiff = -ydiff;
	}	
	facingEntry <<= 1;
	
	int xdiff = toX - x;
	if (xdiff < 0) {
		++facingEntry;
		xdiff = -xdiff;
	}
	
	if (xdiff >= ydiff) {
		int temp = ydiff;
		ydiff = xdiff;
		xdiff = temp;
		
		facingEntry <<= 1;
	} else {
		facingEntry <<= 1;
		facingEntry += 1;
	}
	int temp = (ydiff + 1) >> 1;
	
	if (xdiff < temp) {
		facingEntry <<= 1;
		facingEntry += 1;
	} else {
		facingEntry <<= 1;
	}
	assert(facingEntry < ARRAYSIZE(facingTable));
	return facingTable[facingEntry];
}

void KyraEngine::changePosTowardsFacing(int &x, int &y, int facing) {
	debugC(9, kDebugLevelMain, "KyraEngine::changePosTowardsFacing(%d, %d, %d)", x, y, facing);
	x += _addXPosTable[facing];
	y += _addYPosTable[facing];
}

bool KyraEngine::lineIsPassable(int x, int y) {
	debugC(9, kDebugLevelMain, "KyraEngine::lineIsPassable(%d, %d)", x, y);
	if (queryGameFlag(0xEF)) {
		if (_currentCharacter->sceneId == 5)
			return true;
	}
	
	if (_pathfinderFlag & 2) {
		if (x >= 312)
			return false;
	}
	
	if (_pathfinderFlag & 4) {
		if (y >= 136)
			return false;
	}
	
	if (_pathfinderFlag & 8) {
		if (x < 8)
			return false;
	}
	
	if (_pathfinderFlag2) {
		if (x <= 8 || x >= 312)
			return true;
		if (y < (_northExitHeight & 0xFF) || y > 135)
			return true;
	}
	
	if (y > 137) {
		return false;
	}

	if (y < 0) {
		y = 0;
	}
	
	int ypos = 8;
	if (_scaleMode) {
		ypos = (_scaleTable[y] >> 5) + 1;
		if (8 < ypos)
			ypos = 8;
	}
	
	x -= (ypos >> 1);
	
	int xpos = x;
	int xtemp = xpos + ypos - 1;
	if (x < 0)
		xpos = 0;
		
	if (xtemp > 319)
		xtemp = 319;

	for (; xpos < xtemp; ++xpos) {
		if (!_screen->getShapeFlag1(xpos, y))
			return false;
	}
	return true;
}

int KyraEngine::getMoveTableSize(int *moveTable) {
	debugC(9, kDebugLevelMain, "KyraEngine::getMoveTableSize(%p)", (const void *)moveTable);
	int retValue = 0;
	if (moveTable[0] == 8)
		return 0;
	
	static const int facingTable[] = {
		4, 5, 6, 7, 0, 1, 2, 3
	};
	static const int unkTable[] = {
		-1, -1,  1,  2, -1,  6,  7, -1,
		-1, -1, -1, -1,  2, -1,  0, -1,
		 1, -1, -1, -1,  3,  4, -1,  0,
		 2, -1, -1, -1, -1, -1,  4, -1,
		-1,  2,  3, -1, -1, -1,  5,  6,
		 6, -1,  4, -1, -1, -1, -1, -1,
		 7,  0, -1,  4,  5, -1, -1, -1,
		-1, -1,  0, -1,  6, -1, -1, -1
	};
	
	int *oldPosition = moveTable;
	int *tempPosition = moveTable;
	int *curPosition = moveTable + 1;
	retValue = 1;

	while (*curPosition != 8) {
		if (*oldPosition == facingTable[*curPosition]) {
			retValue -= 2;
			*oldPosition = 9;
			*curPosition = 9;
			
			while (tempPosition != moveTable) {
				--tempPosition;
				if (*tempPosition != 9)
					break;
			}
			
			if (tempPosition == moveTable && *tempPosition == 9) {
				while (*tempPosition != 8 && *tempPosition == 9) {
					++tempPosition;
				}
				if (*tempPosition == 8) {
					return 0;
				}
			}
			
			oldPosition = tempPosition;
			curPosition = oldPosition+1;
			while (*curPosition != 8 && *curPosition == 9) {
				++curPosition;
			}
			continue;
		}
		
		if (unkTable[*curPosition+((*oldPosition)*8)] != -1) {
			--retValue;
			*oldPosition = unkTable[*curPosition+((*oldPosition)*8)];
			*curPosition = 9;
			
			if (tempPosition != oldPosition) {
				curPosition = oldPosition;
				oldPosition = tempPosition;
				while (true) {
					if (tempPosition == moveTable) {
						break;
					}
					--tempPosition;
					if (*tempPosition != 9) {
						break;
					}
				}
			} else {
				while (true) {
					++curPosition;
					if (*curPosition != 9) {
						break;
					}
				}
			}
			continue;
		}
		
		tempPosition = oldPosition;
		oldPosition = curPosition;
		++retValue;
		while (true) {
			++curPosition;
			if (*curPosition != 9) {
				break;
			}
		}
	}

	return retValue;
}

} // end of namespace Kyra