scummvm/engines/scumm/actor.cpp

/* 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/system.h"	// for setFocusRectangle/clearFocusRectangle
#include "scumm/scumm.h"
#include "scumm/actor.h"
#include "scumm/actor_he.h"
#include "scumm/akos.h"
#include "scumm/boxes.h"
#include "scumm/charset.h"
#include "scumm/costume.h"
#include "scumm/he/intern_he.h"
#include "scumm/object.h"
#include "scumm/resource.h"
#include "scumm/scumm_v7.h"
#include "scumm/scumm_v0.h"
#include "scumm/he/sound_he.h"
#include "scumm/he/sprite_he.h"
#include "scumm/usage_bits.h"
#include "scumm/util.h"

namespace Scumm {

byte Actor::kInvalidBox = 0;

static const byte v0ActorDemoTalk[25] = {
	0x00,
	0x06, // Syd
	0x06, // Razor
	0x06, // Dave
	0x06, // Michael
	0x06, // Bernard
	0x06, // Wendy
	0x00, // Jeff
	0x46, // Radiation Suit
	0x06, // Dr Fred
	0x06, // Nurse Edna
	0x06, // Weird Ed
	0x06, // Dead Cousin Ted
	0xE2, // Purple Tentacle
	0xE2, // Green Tentacle
	0x06, // Meteor police
	0xC0, // Meteor
	0x06, // Mark Eteer
	0x06, // Talkshow Host
	0x00, // Plant
	0xC0, // Meteor Radiation
	0xC0, // Edsel (small, outro)
	0x00, // Meteor (small, intro)
	0x06, // Sandy (Lab)
	0x06, // Sandy (Cut-Scene)
};

static const byte v0ActorTalk[25] = {
	0x00,
	0x06, // Syd
	0x06, // Razor
	0x06, // Dave
	0x06, // Michael
	0x06, // Bernard
	0x06, // Wendy
	0x00, // Jeff
	0x46, // Radiation Suit
	0x06, // Dr Fred
	0x06, // Nurse Edna
	0x06, // Weird Ed
	0x06, // Dead Cousin Ted
	0xFF, // Purple Tentacle
	0xFF, // Green Tentacle
	0x06, // Meteor police
	0xC0, // Meteor
	0x06, // Mark Eteer
	0x06, // Talkshow Host
	0x00, // Plant
	0xC0, // Meteor Radiation
	0xC0, // Edsel (small, outro)
	0x00, // Meteor (small, intro)
	0x06, // Sandy (Lab)
	0x06, // Sandy (Cut-Scene)
};

static const byte v0WalkboxSlantedModifier[0x16] = {
	0x00,0x01,0x02,0x03,0x03,0x04,0x05,0x06,
	0x06,0x07,0x08,0x09,0x09,0x0A,0x0B,
	0x0C,0x0C,0x0D,0x0E,0x0F,0x10,0x10
};

Actor::Actor(ScummEngine *scumm, int id) :
	_vm(scumm), _number(id) {
	assert(_vm != 0);
}

void ActorHE::initActor(int mode) {
	Actor::initActor(mode);

	if (mode == -1) {
		_heOffsX = _heOffsY = 0;
		_heSkipLimbs = false;
		memset(_heTalkQueue, 0, sizeof(_heTalkQueue));
	}

	if (mode == 1 || mode == -1) {
		_heCondMask = 1;
		_heNoTalkAnimation = 0;
		_heSkipLimbs = false;
	} else if (mode == 2) {
		_heCondMask = 1;
		_heSkipLimbs = false;
	}

	_heXmapNum = 0;
	_hePaletteNum = 0;
	_heFlags = 0;
	_heTalking = false;

	if (_vm->_game.heversion >= 61)
		_flip = 0;

	_clipOverride = ((ScummEngine_v60he *)_vm)->_actorClipOverride;

	_auxBlock.reset();
}

void Actor::initActor(int mode) {

	if (mode == -1) {
		_top = _bottom = 0;
		_needRedraw = false;
		_needBgReset = false;
		_costumeNeedsInit = false;
		_visible = false;
		_flip = false;
		_speedx = 8;
		_speedy = 2;
		_frame = 0;
		_walkbox = 0;
		_animProgress = 0;
		_drawToBackBuf = false;
		memset(_animVariable, 0, sizeof(_animVariable));
		memset(_palette, 0, sizeof(_palette));
		memset(_sound, 0, sizeof(_sound));
		memset(&_cost, 0, sizeof(CostumeData));
		memset(&_walkdata, 0, sizeof(ActorWalkData));
		_walkdata.point3.x = 32000;
		_walkScript = 0;
	}

	if (mode == 1 || mode == -1) {
		_costume = 0;
		_room = 0;
		_pos.x = 0;
		_pos.y = 0;
		_facing = 180;
		if (_vm->_game.version >= 7)
			_visible = false;
	} else if (mode == 2) {
		_facing = 180;
	}
	_elevation = 0;
	_width = 24;
	_talkColor = 15;
	_talkPosX = 0;
	_talkPosY = -80;
	_boxscale = _scaley = _scalex = 0xFF;
	_charset = 0;
	memset(_sound, 0, sizeof(_sound));
	_targetFacing = _facing;

	_shadowMode = 0;
	_layer = 0;

	stopActorMoving();

	setActorWalkSpeed(8, 2);

	_animSpeed = 0;
	if (_vm->_game.version >= 6)
		_animProgress = 0;

	_ignoreBoxes = false;
	_forceClip = (_vm->_game.version >= 7) ? 100 : 0;
	_ignoreTurns = false;

	_talkFrequency = 256;
	_talkPan = 64;
	_talkVolume = 127;

	_initFrame = 1;
	_walkFrame = 2;
	_standFrame = 3;
	_talkStartFrame = 4;
	_talkStopFrame = 5;

	_walkScript = 0;
	_talkScript = 0;

	_vm->_classData[_number] = (_vm->_game.version >= 7) ? _vm->_classData[0] : 0;
}

void Actor_v2::initActor(int mode) {
	Actor::initActor(mode);

	_speedx = 1;
	_speedy = 1;

	_initFrame = 2;
	_walkFrame = 0;
	_standFrame = 1;
	_talkStartFrame = 5;
	_talkStopFrame = 4;
}

void Actor_v0::initActor(int mode) {
	Actor_v2::initActor(mode);

	_costCommandNew = 0xFF;
	_costCommand = 0xFF;
	_miscflags = 0;
	_speaking = 0;

	_walkCountModulo = 0;
	_newWalkBoxEntered = false;
	_walkDirX = 0;
	_walkDirY = 0;
	_walkYCountGreaterThanXCount = 0;
	_walkXCount = 0;
	_walkXCountInc = 0;
	_walkYCount = 0;
	_walkYCountInc = 0;
	_walkMaxXYCountInc = 0;

	_tmp_WalkBox = 0;
	_tmp_NewWalkBoxEntered = 0;

	_animFrameRepeat = 0;
	for (int i = 0; i < 8; ++i) {
		_limbFrameRepeatNew[i] = 0;
		_limbFrameRepeat[i] = 0;
		_limb_flipped[i] = false;
	}

	walkBoxQueueReset();

	if (_vm->_game.features & GF_DEMO) {
		_sound[0] = v0ActorDemoTalk[_number];
	} else {
		_sound[0] = v0ActorTalk[_number];
	}
}

void Actor_v0::walkBoxQueueReset() {
	_walkboxHistory.clear();
	_walkboxQueueIndex = 0;

	for (uint i = 0; i < ARRAYSIZE(_walkboxQueue); ++i) {
		_walkboxQueue[i] = kInvalidBox;
	}
}

bool Actor_v0::walkBoxQueueAdd(int box) {

	if (_walkboxQueueIndex == ARRAYSIZE(_walkboxQueue))
		return false;

	_walkboxQueue[_walkboxQueueIndex++] = box;
	_walkboxHistory.push_back(box);
	return true;
}

void Actor_v0::walkboxQueueReverse() {
	int j = ARRAYSIZE(_walkboxQueue) - 1;

	while (_walkboxQueue[j] == kInvalidBox && j >= 1)
		--j;

	if (j <= 1)
		return;

	for (int i = 1; i < j && j >= 1 ; ++i, --j) {

		byte tmp = _walkboxQueue[i];

		_walkboxQueue[i] = _walkboxQueue[j];
		_walkboxQueue[j] = tmp;
	}
}

bool Actor_v0::walkBoxQueueFind(int box) {

	for (uint i = 0; i < _walkboxHistory.size(); ++i) {
		if (box == _walkboxHistory[i])
			return true;
	}

	return false;
}

bool Actor_v0::walkBoxQueuePrepare() {
	walkBoxQueueReset();
	int BoxFound = _walkbox;

	if (BoxFound == _walkdata.destbox) {

		_newWalkBoxEntered = true;
		return true;
	}

	// Build a series of walkboxes from our current position, to the target
	do {
		// Add the current box to the queue
		if (!walkBoxQueueAdd(BoxFound))
			return false;

		// Loop until we find a walkbox which hasn't been tested
		while (_walkboxQueueIndex > 0) {

			// Check if the dest box is a direct neighbour
			if ((BoxFound = _vm->getNextBox(BoxFound, _walkdata.destbox)) == kInvalidBox) {

				// Its not, start hunting through this boxes immediate connections
				byte* boxm = _vm->getBoxConnectionBase(_walkboxQueue[_walkboxQueueIndex - 1]);

				// Attempt to find one, which we havn't already used
				for (; *boxm != kInvalidBox; ++boxm) {
					if (walkBoxQueueFind(*boxm) != true)
						break;
				}

				BoxFound = *boxm;
			}

			// Found one?
			if (BoxFound != kInvalidBox) {

				// Did we find a connection to the final walkbox
				if (BoxFound == _walkdata.destbox) {

					_newWalkBoxEntered = true;

					walkBoxQueueAdd(BoxFound);

					walkboxQueueReverse();
					return true;
				}

				// Nope, check the next box
				break;
			}

			// Drop this box, its useless to us
			_walkboxQueue[--_walkboxQueueIndex] = kInvalidBox;

			BoxFound = _walkboxQueue[_walkboxQueueIndex - 1];
		}

	} while (_walkboxQueueIndex > 0);

	return false;
}

void Actor::setBox(int box) {
	_walkbox = box;
	setupActorScale();
}

void Actor_v3::setupActorScale() {
	// WORKAROUND bug #1463598: Under certain circumstances, it is possible
	// for Henry Sr. to reach the front side of Castle Brunwald (following
	// Indy there). But it seems the game has no small costume for Henry,
	// hence he is shown as a giant, triple in size compared to Indy.
	// To workaround this, we override the scale of Henry. Since V3 games
	// like Indy3 don't use the costume scale otherwise, this works fine.
	// The scale factor 0x50 was determined by some guess work.
	if (_number == 2 && _costume == 7 && _vm->_game.id == GID_INDY3 && _vm->_currentRoom == 12) {
		_scalex = 0x50;
		_scaley = 0x50;
	} else {
		// TODO: The following could probably be removed
		_scalex = 0xFF;
		_scaley = 0xFF;
	}
}

void Actor::setupActorScale() {
	if (_ignoreBoxes)
		return;

	// For some boxes, we ignore the scaling and use whatever values the
	// scripts set. This is used e.g. in the Mystery Vortex in Sam&Max.
	// Older games used the flag 0x20 differently, though.
	if (_vm->_game.id == GID_SAMNMAX && (_vm->getBoxFlags(_walkbox) & kBoxIgnoreScale))
		return;

	_boxscale = _vm->getBoxScale(_walkbox);

	uint16 scale = _vm->getScale(_walkbox, _pos.x, _pos.y);
	assert(scale <= 0xFF);

	_scalex = _scaley = (byte)scale;
}


#pragma mark -
#pragma mark --- Actor walking ---
#pragma mark -


void ScummEngine::walkActors() {
	for (int i = 1; i < _numActors; ++i) {
		if (_actors[i]->isInCurrentRoom())
			_actors[i]->walkActor();
	}
}

void Actor::stopActorMoving() {
	if (_walkScript)
		_vm->stopScript(_walkScript);

	if (_vm->_game.version == 0) {
		_moving = 2;
		setDirection(_facing);
	} else {
		_moving = 0;
	}
}

void Actor::setActorWalkSpeed(uint newSpeedX, uint newSpeedY) {
	if (newSpeedX == _speedx && newSpeedY == _speedy)
		return;

	_speedx = newSpeedX;
	_speedy = newSpeedY;

	if (_moving) {
		if (_vm->_game.version == 8 && (_moving & MF_IN_LEG) == 0)
			return;
		calcMovementFactor(_walkdata.next);
	}
}

int getAngleFromPos(int x, int y, bool useATAN) {
	if (useATAN) {
		double temp = atan2((double)x, (double)-y);
		return normalizeAngle((int)(temp * 180 / M_PI));
	} else {
		if (ABS(y) * 2 < ABS(x)) {
			if (x > 0)
				return 90;
			return 270;
		} else {
			if (y > 0)
				return 180;
			return 0;
		}
	}
}

int Actor::calcMovementFactor(const Common::Point& next) {
	int diffX, diffY;
	int32 deltaXFactor, deltaYFactor;

	if (_pos == next)
		return 0;

	diffX = next.x - _pos.x;
	diffY = next.y - _pos.y;
	deltaYFactor = _speedy << 16;

	if (diffY < 0)
		deltaYFactor = -deltaYFactor;

	deltaXFactor = deltaYFactor * diffX;
	if (diffY != 0) {
		deltaXFactor /= diffY;
	} else {
		deltaYFactor = 0;
	}

	if ((uint) ABS(deltaXFactor) > (_speedx << 16))	{
		deltaXFactor = _speedx << 16;
		if (diffX < 0)
			deltaXFactor = -deltaXFactor;

		deltaYFactor = deltaXFactor * diffY;
		if (diffX != 0) {
			deltaYFactor /= diffX;
		} else {
			deltaXFactor = 0;
		}
	}

	_walkdata.cur = _pos;
	_walkdata.next = next;
	_walkdata.deltaXFactor = deltaXFactor;
	_walkdata.deltaYFactor = deltaYFactor;
	_walkdata.xfrac = 0;
	_walkdata.yfrac = 0;

	if (_vm->_game.version <= 2)
		_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*deltaXFactor, V12_Y_MULTIPLIER*deltaYFactor, false);
	else
		_targetFacing = getAngleFromPos(deltaXFactor, deltaYFactor, (_vm->_game.id == GID_DIG || _vm->_game.id == GID_CMI));

	return actorWalkStep();
}

int Actor::actorWalkStep() {
	int tmpX, tmpY;
	int distX, distY;
	int nextFacing;

	_needRedraw = true;

	nextFacing = updateActorDirection(true);
	if (!(_moving & MF_IN_LEG) || _facing != nextFacing) {
		if (_walkFrame != _frame || _facing != nextFacing) {
			startWalkAnim(1, nextFacing);
		}
		_moving |= MF_IN_LEG;
	}

	if (_walkbox != _walkdata.curbox && _vm->checkXYInBoxBounds(_walkdata.curbox, _pos.x, _pos.y)) {
		setBox(_walkdata.curbox);
	}

	distX = ABS(_walkdata.next.x - _walkdata.cur.x);
	distY = ABS(_walkdata.next.y - _walkdata.cur.y);

	if (ABS(_pos.x - _walkdata.cur.x) >= distX && ABS(_pos.y - _walkdata.cur.y) >= distY) {
		_moving &= ~MF_IN_LEG;
		return 0;
	}

	if (_vm->_game.version <= 2) {
		if (_walkdata.deltaXFactor != 0) {
			if (_walkdata.deltaXFactor > 0)
				_pos.x += 1;
			else
				_pos.x -= 1;
		}
		if (_walkdata.deltaYFactor != 0) {
			if (_walkdata.deltaYFactor > 0)
				_pos.y += 1;
			else
				_pos.y -= 1;
		}
	} else {
		tmpX = (_pos.x * (1 << 16)) + _walkdata.xfrac + (_walkdata.deltaXFactor / 256) * _scalex;
		_walkdata.xfrac = (uint16)tmpX;
		_pos.x = (tmpX / (1 << 16));

		tmpY = (_pos.y * (1 << 16)) + _walkdata.yfrac + (_walkdata.deltaYFactor / 256) * _scaley;
		_walkdata.yfrac = (uint16)tmpY;
		_pos.y = (tmpY / (1 << 16));
	}

	if (ABS(_pos.x - _walkdata.cur.x) > distX) {
		_pos.x = _walkdata.next.x;
	}

	if (ABS(_pos.y - _walkdata.cur.y) > distY) {
		_pos.y = _walkdata.next.y;
	}

	if ((_vm->_game.version <= 2 || (_vm->_game.version >= 4 && _vm->_game.version <= 6)) && _pos == _walkdata.next) {
		_moving &= ~MF_IN_LEG;
		return 0;
	}

	return 1;
}

bool Actor_v0::calcWalkDistances() {
	_walkDirX = 0;
	_walkDirY = 0;
	_walkYCountGreaterThanXCount = 0;
	uint16 A = 0;

	if (_CurrentWalkTo.x >= _tmp_NewPos.x) {
		A = _CurrentWalkTo.x - _tmp_NewPos.x;
		_walkDirX = 1;
	} else {
		A = _tmp_NewPos.x - _CurrentWalkTo.x;
	}

	_walkXCountInc = A;

	if (_CurrentWalkTo.y >= _tmp_NewPos.y) {
		A = _CurrentWalkTo.y - _tmp_NewPos.y;
		_walkDirY = 1;
	} else {
		A = _tmp_NewPos.y - _CurrentWalkTo.y;
	}

	_walkYCountInc = A;
	if (!_walkXCountInc && !_walkYCountInc)
		return true;

	if (_walkXCountInc <= _walkYCountInc)
		_walkYCountGreaterThanXCount = 1;

	// 2FCC
	A = _walkXCountInc;
	if (A <= _walkYCountInc)
		A = _walkYCountInc;

	_walkMaxXYCountInc = A;
	_walkXCount = _walkXCountInc;
	_walkYCount = _walkYCountInc;
	_walkCountModulo = _walkMaxXYCountInc;

	return false;
}

/* Calculate the result of moving X+1 or X-1 */
byte Actor_v0::actorWalkXCalculate() {
	byte A = _walkXCount;
	A += _walkXCountInc;
	if (A >= _walkCountModulo) {
		if (!_walkDirX) {
			_tmp_NewPos.x--;
		} else {
			_tmp_NewPos.x++;
		}

		A -= _walkCountModulo;
	}
	// 2EAC
	_walkXCount = A;
	setActorToTempPosition();
	if (updateWalkbox() == kInvalidBox) {
		// 2EB9
		setActorToOriginalPosition();

		return 3;
	}
	// 2EBF
	if (_tmp_NewPos.x == _CurrentWalkTo.x)
		return 1;

	return 0;
}

/* Calculate the result of moving Y+1 or Y-1 */
byte Actor_v0::actorWalkYCalculate() {
	byte A = _walkYCount;
	A += _walkYCountInc;
	if (A >= _walkCountModulo) {
		if (!_walkDirY) {
			_tmp_NewPos.y--;
		} else {
			_tmp_NewPos.y++;
		}

		A -= _walkCountModulo;
	}
	// 2EEB
	_walkYCount = A;
	setActorToTempPosition();
	if (updateWalkbox() == kInvalidBox) {
		// 2EF8
		setActorToOriginalPosition();
		return 4;
	}
	// 2EFE
	if (_walkYCountInc != 0) {
		if (_walkYCountInc == 0xFF) {
			setActorToOriginalPosition();
			return 4;
		}
	}
	// 2F0D
	if (_CurrentWalkTo.y == _tmp_NewPos.y)
		return 1;

	return 0;
}

void Actor::startWalkActor(int destX, int destY, int dir) {
	AdjustBoxResult abr;

	if (!isInCurrentRoom() && _vm->_game.version >= 7) {
		debugC(DEBUG_ACTORS, "startWalkActor: attempting to walk actor %d who is not in this room", _number);
		return;
	}

	if (_vm->_game.version <= 4) {
		abr.x = destX;
		abr.y = destY;
	} else {
		abr = adjustXYToBeInBox(destX, destY);
	}

	if (!isInCurrentRoom() && _vm->_game.version <= 6) {
		_pos.x = abr.x;
		_pos.y = abr.y;
		if (!_ignoreTurns && dir != -1)
			_facing = dir;
		return;
	}

	if (_vm->_game.version <= 2) {
		abr = adjustXYToBeInBox(abr.x, abr.y);
		if (_pos.x == abr.x && _pos.y == abr.y && (dir == -1 || _facing == dir))
			return;
	} else {
		if (_ignoreBoxes) {
			abr.box = kInvalidBox;
			_walkbox = kInvalidBox;
		} else {
			if (_vm->checkXYInBoxBounds(_walkdata.destbox, abr.x, abr.y)) {
				abr.box = _walkdata.destbox;
			} else {
				abr = adjustXYToBeInBox(abr.x, abr.y);
			}
			if (_moving && _walkdata.destdir == dir && _walkdata.dest.x == abr.x && _walkdata.dest.y == abr.y)
				return;
		}

		if (_pos.x == abr.x && _pos.y == abr.y) {
			if (dir != _facing)
				turnToDirection(dir);
			return;
		}
	}

	_walkdata.dest.x = abr.x;
	_walkdata.dest.y = abr.y;
	_walkdata.destbox = abr.box;
	_walkdata.destdir = dir;
	_walkdata.point3.x = 32000;
	_walkdata.curbox = _walkbox;

	if (_vm->_game.version == 0) {
		((Actor_v0 *)this)->walkBoxQueuePrepare();

	} else if (_vm->_game.version <= 2) {
		_moving = (_moving & ~(MF_LAST_LEG | MF_IN_LEG)) | MF_NEW_LEG;
 	} else {
 		_moving = (_moving & MF_IN_LEG) | MF_NEW_LEG;
 	}

}

void Actor::startWalkAnim(int cmd, int angle) {
	if (angle == -1)
		angle = _facing;

	/* Note: walk scripts aren't required to make the Dig
	 * work as usual
	 */
	if (_walkScript) {
		int args[NUM_SCRIPT_LOCAL];
		memset(args, 0, sizeof(args));
		args[0] = _number;
		args[1] = cmd;
		args[2] = angle;
		_vm->runScript(_walkScript, 1, 0, args);
	} else {
		switch (cmd) {
		case 1:										/* start walk */
			setDirection(angle);
			startAnimActor(_walkFrame);
			break;
		case 2:										/* change dir only */
			setDirection(angle);
			break;
		case 3:										/* stop walk */
			turnToDirection(angle);
			startAnimActor(_standFrame);
			break;
		}
	}
}

void Actor::walkActor() {
	int new_dir, next_box;
	Common::Point foundPath;

	if (_vm->_game.version >= 7) {
		if (_moving & MF_FROZEN) {
			if (_moving & MF_TURN) {
				new_dir = updateActorDirection(false);
				if (_facing != new_dir)
					setDirection(new_dir);
				else
					_moving &= ~MF_TURN;
			}
			return;
		}
	}

	if (!_moving)
		return;

	if (!(_moving & MF_NEW_LEG)) {
		if (_moving & MF_IN_LEG && actorWalkStep())
			return;

		if (_moving & MF_LAST_LEG) {
			_moving = 0;
			setBox(_walkdata.destbox);
			if (_vm->_game.version <= 6) {
				startAnimActor(_standFrame);
				if (_targetFacing != _walkdata.destdir)
					turnToDirection(_walkdata.destdir);
			} else {
				startWalkAnim(3, _walkdata.destdir);
			}
			return;
		}

		if (_moving & MF_TURN) {
			new_dir = updateActorDirection(false);
			if (_facing != new_dir)
				setDirection(new_dir);
			else
				_moving = 0;
			return;
		}

		setBox(_walkdata.curbox);
		_moving &= MF_IN_LEG;
	}

	_moving &= ~MF_NEW_LEG;
	do {
		if (_walkbox == kInvalidBox) {
			setBox(_walkdata.destbox);
			_walkdata.curbox = _walkdata.destbox;
			break;
		}

		if (_walkbox == _walkdata.destbox)
			break;

		next_box = _vm->getNextBox(_walkbox, _walkdata.destbox);
		if (next_box < 0) {
			_walkdata.destbox = _walkbox;
			_moving |= MF_LAST_LEG;
			return;
		}

		_walkdata.curbox = next_box;

		if (findPathTowards(_walkbox, next_box, _walkdata.destbox, foundPath))
			break;

		if (calcMovementFactor(foundPath))
			return;

		setBox(_walkdata.curbox);
	} while (1);

	_moving |= MF_LAST_LEG;
	calcMovementFactor(_walkdata.dest);
}

void Actor_v0::walkActor() {
	actorSetWalkTo();

	_needRedraw = true;
	if (_NewWalkTo != _CurrentWalkTo) {
		_CurrentWalkTo = _NewWalkTo;

UpdateActorDirection:;
		_tmp_NewPos = _pos;

		byte tmp = calcWalkDistances();
		_moving &= 0xF0;
		_moving |= tmp;

		if (!_walkYCountGreaterThanXCount) {
			if (_walkDirX) {
				_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*1, V12_Y_MULTIPLIER*0, false);
			} else {
				_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*-1, V12_Y_MULTIPLIER*0, false);
			}
		} else {
			if (_walkDirY) {
				_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*0, V12_Y_MULTIPLIER*1, false);
			} else {
				_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*0, V12_Y_MULTIPLIER*-1, false);
			}
		}

		directionUpdate();

		// Need to turn again?
		if (_moving & 0x80)
			return;

		animateActor(newDirToOldDir(_facing));

	} else {
		// 2A0A
		if ((_moving & 0x7F) != 1) {

			if (_NewWalkTo == _pos)
				return;
		}
	}

	// 2A9A: Nothing to do
	if (_moving == 2)
		return;

	// Reached Target
	if ((_moving & 0x0F) == 1)
		return stopActorMoving();

	// 2AAD: Turn actor?
	if (_moving & 0x80) {
		directionUpdate();

		// Turn again?
		if (_moving & 0x80)
			return;

		// Start Walk animation
		animateActor(newDirToOldDir(_facing));
	}

	// Walk X
	if ((_moving & 0x0F) == 3) {
	WalkX:;
		setActorToTempPosition();

		if (!_walkDirX) {
			_pos.x--;
		} else {
			_pos.x++;
		}

		// 2C51
		// Does this move us into the walkbox?
		if (updateWalkbox() != kInvalidBox) {

			// Yes, Lets update our direction
			setActorToOriginalPosition();
			goto UpdateActorDirection;
		}

		setActorToOriginalPosition();

		// Have we reached Y Target?
		if (_CurrentWalkTo.y == _tmp_NewPos.y) {
			stopActorMoving();
			return;
		}

		// Lets check one more pixel up or down
		if (!_walkDirY) {
			_tmp_NewPos.y--;
		} else {
			_tmp_NewPos.y++;
		}

		setActorToTempPosition();

		// Are we still inside an invalid walkbox?
		if (updateWalkbox() == kInvalidBox) {
			setActorToOriginalPosition();
			stopActorMoving();
			return;
		}

		// Found a valid walkbox
		return;
	}

	// 2ADA: Walk Y
	if ((_moving & 0x0F) == 4) {
		setActorToTempPosition();

		if (!_walkDirY) {
			_pos.y--;
		} else {
			_pos.y++;
		}

		// Moved out of walkbox?
		if (updateWalkbox() == kInvalidBox) {
			// 2CC7
			setActorToOriginalPosition();

			// Reached X?
			if (_CurrentWalkTo.x == _tmp_NewPos.x) {
				stopActorMoving();
				return;
			}

			// Lets check one more pixel to left or right
			if (!_walkDirX) {
				_tmp_NewPos.x--;
			} else {
				_tmp_NewPos.x++;
			}

			setActorToTempPosition();

			// Still in an invalid walkbox?
			if (updateWalkbox() == kInvalidBox) {

				setActorToOriginalPosition();
				stopActorMoving();
			}

			return;
		} else {

			// Lets update our direction
			setActorToOriginalPosition();
			goto UpdateActorDirection;
		}
	}

	if ((_moving & 0x0F) == 0) {
		// 2AE8
		byte A = actorWalkXCalculate();

		// Will X movement reach destination
		if (A == 1) {

			A = actorWalkYCalculate();

			// Will Y movement also reach destination?
			if (A == 1) {
				_moving &= 0xF0;
				_moving |= A;
			} else {
				if (A == 4)
					stopActorMoving();
			}

			return;

		} else {
			// 2B0C: Moving X will put us in an invalid walkbox
			if (A == 3) {
				_moving &= 0xF0;
				_moving |= A;

				if (_walkDirY) {
					_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*0, V12_Y_MULTIPLIER*1, false);
				} else {
					_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*0, V12_Y_MULTIPLIER*-1, false);
				}

				directionUpdate();
				animateActor(newDirToOldDir(_facing));

				// FIXME: During the hands-free-demo in the library (room 5), Purple Tentacle gets stuck following Sandy due to the corner of the stairs, 
				//        This is due to distance, and walkbox gap/layout. This works fine with the original engine, because it 'brute forces' 
				//        another pixel move in the walk direction before giving up, allowing us to move enough pixels to hit the next walkbox.
				//        Why this fails with the return is because script-10 is executing a 'walkActorToActor' every cycle, which restarts the movement process
				//        As a work around, we implement the original engine behaviour only for Purple Tentacle in the Demo. Doing this for other actors
				//        causes a skipping effect while transitioning walkboxes (the original has another bug in this situation, in which the actor just changes direction for 1 frame during this moment)
				if ((_vm->_game.features & GF_DEMO) && _number == 13)
					goto WalkX;

				return;

			} else {
				// 2B39: Moving X was ok, do we also move Y
				A = actorWalkYCalculate();

				// Are we in a valid walkbox?
				if (A != 4)
					return;

				// No, we need to change direction
				_moving &= 0xF0;
				_moving |= A;

				if (_walkDirX) {
					_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*1, V12_Y_MULTIPLIER*0, false);
				} else {
					_targetFacing = getAngleFromPos(V12_X_MULTIPLIER*-1, V12_Y_MULTIPLIER*0, false);
				}

				directionUpdate();
				animateActor(newDirToOldDir(_facing));

				return;
			}
		}
	}
}

void Actor_v2::walkActor() {
	Common::Point foundPath, tmp;
	int new_dir, next_box;

	if (_moving & MF_TURN) {
		new_dir = updateActorDirection(false);
		if (_facing != new_dir) {
			setDirection(new_dir);
		} else {
			_moving = 0;
		}
		return;
	}

	if (!_moving)
		return;

	if (_moving & MF_IN_LEG) {
		actorWalkStep();
	} else {
		if (_moving & MF_LAST_LEG) {
			_moving = 0;
			startAnimActor(_standFrame);
			if (_targetFacing != _walkdata.destdir)
				turnToDirection(_walkdata.destdir);
		} else {
			setBox(_walkdata.curbox);
			if (_walkbox == _walkdata.destbox) {
				foundPath = _walkdata.dest;
				_moving |= MF_LAST_LEG;
			} else {
				next_box = _vm->getNextBox(_walkbox, _walkdata.destbox);
				if (next_box < 0) {
					_moving |= MF_LAST_LEG;
					return;
				}

				// Can't walk through locked boxes
				int flags = _vm->getBoxFlags(next_box);
				if ((flags & kBoxLocked) && !((flags & kBoxPlayerOnly) && !isPlayer())) {
					_moving |= MF_LAST_LEG;
					//_walkdata.destdir = -1;
				}

				_walkdata.curbox = next_box;

				getClosestPtOnBox(_vm->getBoxCoordinates(_walkdata.curbox), _pos.x, _pos.y, tmp.x, tmp.y);
				getClosestPtOnBox(_vm->getBoxCoordinates(_walkbox), tmp.x, tmp.y, foundPath.x, foundPath.y);
			}
			calcMovementFactor(foundPath);
		}
	}
}

void Actor_v3::walkActor() {
	Common::Point p2, p3;	// Gate locations
	int new_dir, next_box;

	if (!_moving)
		return;

	if (!(_moving & MF_NEW_LEG)) {
		if (_moving & MF_IN_LEG && actorWalkStep())
			return;

		if (_moving & MF_LAST_LEG) {
			_moving = 0;
			startAnimActor(_standFrame);
			if (_targetFacing != _walkdata.destdir)
				turnToDirection(_walkdata.destdir);
			return;
		}

		if (_moving & MF_TURN) {
			new_dir = updateActorDirection(false);
			if (_facing != new_dir)
				setDirection(new_dir);
			else
				_moving = 0;
			return;
		}

		if (_walkdata.point3.x != 32000) {
			if (calcMovementFactor(_walkdata.point3)) {
				_walkdata.point3.x = 32000;
				return;
			}
			_walkdata.point3.x = 32000;
		}

		setBox(_walkdata.curbox);
		_moving &= MF_IN_LEG;
	}

	_moving &= ~MF_NEW_LEG;
	do {
		if (_walkbox == kInvalidBox) {
			setBox(_walkdata.destbox);
			_walkdata.curbox = _walkdata.destbox;
			break;
		}

		if (_walkbox == _walkdata.destbox)
			break;

		next_box = _vm->getNextBox(_walkbox, _walkdata.destbox);
		if (next_box < 0) {
			_moving |= MF_LAST_LEG;
			return;
		}

		// Can't walk through locked boxes
		int flags = _vm->getBoxFlags(next_box);
		if ((flags & kBoxLocked) && !((flags & kBoxPlayerOnly) && !isPlayer())) {
			_moving |= MF_LAST_LEG;
			return;
		}

		_walkdata.curbox = next_box;

		findPathTowardsOld(_walkbox, next_box, _walkdata.destbox, p2, p3);
		if (p2.x == 32000 && p3.x == 32000) {
			break;
		}

		if (p2.x != 32000) {
			if (calcMovementFactor(p2)) {
				_walkdata.point3 = p3;
				return;
			}
		}
		if (calcMovementFactor(p3))
			return;

		setBox(_walkdata.curbox);
	} while (1);

	_moving |= MF_LAST_LEG;
	calcMovementFactor(_walkdata.dest);
}


#pragma mark -
#pragma mark --- Actor direction ---
#pragma mark -


int Actor::remapDirection(int dir, bool is_walking) {
	int specdir;
	byte flags;
	byte mask;
	bool flipX;
	bool flipY;

	// FIXME: It seems that at least in The Dig the original code does
	// check _ignoreBoxes here. However, it breaks some animations in Loom,
	// causing Bobbin to face towards the camera instead of away from it
	// in some places: After the tree has been destroyed by lightning, and
	// when entering the dark tunnels beyond the dragon's lair at the very
	// least. Possibly other places as well.
	//
	// The Dig also checks if the actor is in the current room, but that's
	// not necessary here because we never call the function unless the
	// actor is in the current room anyway.

	if (!_ignoreBoxes || _vm->_game.id == GID_LOOM) {
		specdir = _vm->_extraBoxFlags[_walkbox];
		if (specdir) {
			if (specdir & 0x8000) {
				dir = specdir & 0x3FFF;
			} else {
				specdir = specdir & 0x3FFF;
				if (specdir - 90 < dir && dir < specdir + 90)
					dir = specdir;
				else
					dir = specdir + 180;
			}
		}

		flags = _vm->getBoxFlags(_walkbox);

		flipX = (_walkdata.deltaXFactor > 0);
		flipY = (_walkdata.deltaYFactor > 0);

		// Check for X-Flip
		if ((flags & kBoxXFlip) || isInClass(kObjectClassXFlip)) {
			dir = 360 - dir;
			flipX = !flipX;
		}
		// Check for Y-Flip
		if ((flags & kBoxYFlip) || isInClass(kObjectClassYFlip)) {
			dir = 180 - dir;
			flipY = !flipY;
		}

		switch (flags & 7) {
		case 1:
			if (_vm->_game.version >= 7) {
				if (dir < 180)
					return 90;
				else
					return 270;
			} else {
				if (is_walking)	                       // Actor is walking
					return flipX ? 90 : 270;
				else	                               // Actor is standing/turning
					return (dir == 90) ? 90 : 270;
			}
		case 2:
			if (_vm->_game.version >= 7) {
				if (dir > 90 && dir < 270)
					return 180;
				else
					return 0;
			} else {
				if (is_walking)	                       // Actor is walking
					return flipY ? 180 : 0;
				else	                               // Actor is standing/turning
					return (dir == 0) ? 0 : 180;
			}
		case 3:
			return 270;
		case 4:
			return 90;
		case 5:
			return 0;
		case 6:
			return 180;
		}

		// MM v0 stores flags as a part of the mask
		if (_vm->_game.version == 0) {
			mask = _vm->getMaskFromBox(_walkbox);
			// face the wall if climbing/descending a ladder
			if ((mask & 0x8C) == 0x84)
				return 0;
		}
	}
	// OR 1024 in to signal direction interpolation should be done
	return normalizeAngle(dir) | 1024;
}

int Actor::updateActorDirection(bool is_walking) {
	int from;
	bool dirType = false;
	int dir;
	bool shouldInterpolate;

	if ((_vm->_game.version == 6) && _ignoreTurns)
		return _facing;

	dirType = (_vm->_game.version >= 7) ? _vm->_costumeLoader->hasManyDirections(_costume) : false;

	from = toSimpleDir(dirType, _facing);
	dir = remapDirection(_targetFacing, is_walking);

	if (_vm->_game.version >= 7)
		// Direction interpolation interfers with walk scripts in Dig; they perform
		// (much better) interpolation themselves.
		shouldInterpolate = false;
	else
		shouldInterpolate = (dir & 1024) ? true : false;
	dir &= 1023;

	if (shouldInterpolate) {
		int to = toSimpleDir(dirType, dir);
		int num = dirType ? 8 : 4;

		// Turn left or right, depending on which is shorter.
		int diff = to - from;
		if (ABS(diff) > (num >> 1))
			diff = -diff;

		if (diff > 0) {
			to = from + 1;
		} else if (diff < 0){
			to = from - 1;
		}

		dir = fromSimpleDir(dirType, (to + num) % num);
	}

	return dir;
}

void Actor::setDirection(int direction) {
	uint aMask;
	int i;
	uint16 vald;

	// HACK to fix bug #774783
	// If Hitler's direction is being set to anything other than 90, set it to 90
	if ((_vm->_game.id == GID_INDY3) && _vm->_roomResource == 46 && _number == 9 && direction != 90)
		direction = 90;

	// Do nothing if actor is already facing in the given direction
	if (_facing == direction)
		return;

	// Normalize the angle
	_facing = normalizeAngle(direction);

	// If there is no costume set for this actor, we are finished
	if (_costume == 0)
		return;

	// Update the costume for the new direction (and mark the actor for redraw)
	aMask = 0x8000;
	for (i = 0; i < 16; i++, aMask >>= 1) {
		vald = _cost.frame[i];
		if (vald == 0xFFFF)
			continue;
		_vm->_costumeLoader->costumeDecodeData(this, vald, (_vm->_game.version <= 2) ? 0xFFFF : aMask);
	}

	_needRedraw = true;
}

void Actor_v0::setDirection(int direction) {
	int dir = newDirToOldDir(direction);
	int res = 0;

	switch (dir) {
		case 0:
			res = 4;	// Left
			break;

		case 1:
			res = 5;	// Right
			break;

		case 2:
			res = 6;	// Face Camera
			break;

		default:
			res = 7;	// Face Away
			break;
	}

	_animFrameRepeat = -1;
	animateActor(res);
}

void Actor::faceToObject(int obj) {
	int x2, y2, dir;

	if (!isInCurrentRoom())
		return;

	if (_vm->getObjectOrActorXY(obj, x2, y2) == -1)
		return;

	dir = (x2 > _pos.x) ? 90 : 270;
	turnToDirection(dir);
}

void Actor::turnToDirection(int newdir) {
	if (newdir == -1 || _ignoreTurns)
		return;

	if (_vm->_game.version <= 6) {
		_targetFacing = newdir;

		if (_vm->_game.version == 0) {
			setDirection(newdir);
			return;
		}
		_moving = MF_TURN;

	} else {
		_moving &= ~MF_TURN;
		if (newdir != _facing) {
			_moving |= MF_TURN;
			_targetFacing = newdir;
		}
	}
}


#pragma mark -
#pragma mark --- Actor position ---
#pragma mark -


void ScummEngine::putActors() {
	Actor *a;
	int i;

	for (i = 1; i < _numActors; i++) {
		a = _actors[i];
		if (a && a->isInCurrentRoom())
			a->putActor();
	}
}

void Actor::putActor(int dstX, int dstY, int newRoom) {
	if (_visible && _vm->_currentRoom != newRoom && _vm->getTalkingActor() == _number) {
		_vm->stopTalk();
	}

	// WORKAROUND: The green transparency of the tank in the Hall of Oddities
	// is positioned one pixel too far to the left. This appears to be a bug
	// in the original game as well.
	if (_vm->_game.id == GID_SAMNMAX && newRoom == 16 && _number == 5 && dstX == 235 && dstY == 236)
		dstX++;

	_pos.x = dstX;
	_pos.y = dstY;
	_room = newRoom;
	_needRedraw = true;

	if (_vm->VAR(_vm->VAR_EGO) == _number) {
		_vm->_egoPositioned = true;
	}

	if (_visible) {
		if (isInCurrentRoom()) {
			if (_moving) {
				stopActorMoving();
				startAnimActor(_standFrame);
			}
			adjustActorPos();
		} else {
#ifdef ENABLE_HE
			if (_vm->_game.heversion >= 71)
				((ScummEngine_v71he *)_vm)->queueAuxBlock((ActorHE *)this);
#endif
			hideActor();
		}
	} else {
		if (isInCurrentRoom())
			showActor();
	}

	if (_vm->_game.version == 0) {

		((Actor_v0 *)this)->_newWalkBoxEntered = false;
		((Actor_v0 *)this)->_CurrentWalkTo = _pos;
		((Actor_v0 *)this)->_NewWalkTo = _pos;
	}

	// V0-V1 Maniac always sets the actor to face the camera upon entering a room
	if (_vm->_game.id == GID_MANIAC && _vm->_game.version <= 1 && _vm->_game.platform != Common::kPlatformNES)
		setDirection(oldDirToNewDir(2));
}

static bool inBoxQuickReject(const BoxCoords &box, int x, int y, int threshold) {
	int t;

	t = x - threshold;
	if (t > box.ul.x && t > box.ur.x && t > box.lr.x && t > box.ll.x)
		return true;

	t = x + threshold;
	if (t < box.ul.x && t < box.ur.x && t < box.lr.x && t < box.ll.x)
		return true;

	t = y - threshold;
	if (t > box.ul.y && t > box.ur.y && t > box.lr.y && t > box.ll.y)
		return true;

	t = y + threshold;
	if (t < box.ul.y && t < box.ur.y && t < box.lr.y && t < box.ll.y)
		return true;

	return false;
}

static int checkXYInBoxBounds(int boxnum, int x, int y, int &destX, int &destY) {
	BoxCoords box = g_scumm->getBoxCoordinates(boxnum);
	int xmin, xmax;

	// We are supposed to determine the point (destX,destY) contained in
	// the given box which is closest to the point (x,y), and then return
	// some kind of "distance" between the two points.

	// First, we determine destY and a range (xmin to xmax) in which destX
	// is contained.
	if (y < box.ul.y) {
		// Point is above the box
		destY = box.ul.y;
		xmin = box.ul.x;
		xmax = box.ur.x;
	} else if (y >= box.ll.y) {
		// Point is below the box
		destY = box.ll.y;
		xmin = box.ll.x;
		xmax = box.lr.x;
	} else if ((x >= box.ul.x) && (x >= box.ll.x) && (x < box.ur.x) && (x < box.lr.x)) {
		// Point is strictly inside the box
		destX = x;
		destY = y;
		xmin = xmax = x;
	} else {
		// Point is to the left or right of the box,
		// so the y coordinate remains unchanged
		destY = y;
		int ul = box.ul.x;
		int ll = box.ll.x;
		int ur = box.ur.x;
		int lr = box.lr.x;
		int top = box.ul.y;
		int bottom = box.ll.y;
		int cury;

		// Perform a binary search to determine the x coordinate.
		// Note: It would be possible to compute this value in a
		// single step simply by calculating the slope of the left
		// resp. right side and using that to find the correct
		// result. However, the original engine did use the search
		// approach, so we do that, too.
		do {
			xmin = (ul + ll) / 2;
			xmax = (ur + lr) / 2;
			cury = (top + bottom) / 2;

			if (cury < y) {
				top = cury;
				ul = xmin;
				ur = xmax;
			} else if (cury > y) {
				bottom = cury;
				ll = xmin;
				lr = xmax;
			}
		} while (cury != y);
	}

	// Now that we have limited the value of destX to a fixed
	// interval, it's a trivial matter to finally determine it.
	if (x < xmin) {
		destX = xmin;
	} else if (x > xmax) {
		destX = xmax;
	} else {
		destX = x;
	}

	// Compute the distance of the points. We measure the
	// distance with a granularity of 8x8 blocks only (hence
	// yDist must be divided by 4, as we are using 8x2 pixels
	// blocks for actor coordinates).
	int xDist = ABS(x - destX);
	int yDist = ABS(y - destY) / 4;
	int dist;

	if (g_scumm->_game.version == 0)
		xDist *= 2;

	if (xDist < yDist)
		dist = (xDist >> 1) + yDist;
	else
		dist = (yDist >> 1) + xDist;

	return dist;
}

AdjustBoxResult Actor_v0::adjustPosInBorderWalkbox(AdjustBoxResult box) {
	AdjustBoxResult Result = box;
	BoxCoords BoxCoord = _vm->getBoxCoordinates(box.box);

	byte boxMask = _vm->getMaskFromBox(box.box);
	if (!(boxMask & 0x80))
		return Result;

	int16 A;
	boxMask &= 0x7C;
	if (boxMask == 0x0C)
		A = 2;
	else {
		if (boxMask != 0x08)
			return Result;

		A = 1;
	}

	// 1BC6
	byte Modifier = box.y - BoxCoord.ul.y;
	assert(Modifier < 0x16);

	if (A == 1) {
		// 1BCF
		A = BoxCoord.ur.x - v0WalkboxSlantedModifier[ Modifier ];
		if (A < box.x)
			return box;

		if (A <= 0xA0)
			A = 0;

		Result.x = A;
	} else {
		// 1BED
		A = BoxCoord.ul.x + v0WalkboxSlantedModifier[ Modifier ];

		if (A < box.x || A == box.x)
			Result.x = A;
	}

	return Result;
}

AdjustBoxResult Actor_v0::adjustXYToBeInBox(int dstX, int dstY) {
	AdjustBoxResult Result = Actor_v2::adjustXYToBeInBox(dstX, dstY);

	if (Result.box == kInvalidBox)
		return Result;

	return adjustPosInBorderWalkbox(Result);
}

AdjustBoxResult Actor_v2::adjustXYToBeInBox(const int dstX, const int dstY) {
	AdjustBoxResult abr;

	abr.x = dstX;
	abr.y = dstY;
	abr.box = kInvalidBox;

	int numBoxes = _vm->getNumBoxes() - 1;
	int bestDist = 0xFF;
	for (int i = 0; i <= numBoxes; i++) {
		// MM v0 prioritizes lower boxes, other engines higher boxes
		int box = (_vm->_game.version == 0 ? i : numBoxes - i);
		int foundX, foundY;
		int flags = _vm->getBoxFlags(box);
		if ((flags & kBoxInvisible) && !((flags & kBoxPlayerOnly) && !isPlayer()))
			continue;
		int dist = checkXYInBoxBounds(box, dstX, dstY, foundX, foundY);	// also merged with getClosestPtOnBox
		if (dist == 0) {
			abr.x = foundX;
			abr.y = foundY;
			abr.box = box;

			break;
		}
		if (dist < bestDist) {
			bestDist = dist;
			abr.x = foundX;
			abr.y = foundY;
			abr.box = box;
		}
	}

	return abr;
}

AdjustBoxResult Actor::adjustXYToBeInBox(int dstX, int dstY) {
	const uint thresholdTable[] = { 30, 80, 0 };
	AdjustBoxResult abr;
	int16 tmpX, tmpY;
	int tmpDist, bestDist, threshold, numBoxes;
	byte flags, bestBox;
	int box;
	const int firstValidBox = (_vm->_game.features & GF_SMALL_HEADER) ? 0 : 1;

	abr.x = dstX;
	abr.y = dstY;
	abr.box = kInvalidBox;

	if (_ignoreBoxes)
		return abr;

	for (int tIdx = 0; tIdx < ARRAYSIZE(thresholdTable); tIdx++) {
		threshold = thresholdTable[tIdx];

		numBoxes = _vm->getNumBoxes() - 1;
		if (numBoxes < firstValidBox)
			return abr;

		bestDist = (_vm->_game.version >= 7) ? 0x7FFFFFFF : 0xFFFF;
		bestBox = kInvalidBox;

		// We iterate (backwards) over all boxes, searching the one closest
		// to the desired coordinates.
		for (box = numBoxes; box >= firstValidBox; box--) {
			flags = _vm->getBoxFlags(box);

			// Skip over invisible boxes
			if ((flags & kBoxInvisible) && !((flags & kBoxPlayerOnly) && !isPlayer()))
				continue;

			// For increased performance, we perform a quick test if
			// the coordinates can even be within a distance of 'threshold'
			// pixels of the box.
			if (threshold > 0 && inBoxQuickReject(_vm->getBoxCoordinates(box), dstX, dstY, threshold))
				continue;

			// Check if the point is contained in the box. If it is,
			// we don't have to search anymore.
			if (_vm->checkXYInBoxBounds(box, dstX, dstY)) {
				abr.x = dstX;
				abr.y = dstY;
				abr.box = box;
				return abr;
			}

			// Find the point in the box which is closest to our point.
			tmpDist = getClosestPtOnBox(_vm->getBoxCoordinates(box), dstX, dstY, tmpX, tmpY);

			// Check if the box is closer than the previous boxes.
			if (tmpDist < bestDist) {
				abr.x = tmpX;
				abr.y = tmpY;

				if (tmpDist == 0) {
					abr.box = box;
					return abr;
				}
				bestDist = tmpDist;
				bestBox = box;
			}
		}

		// If the closest ('best') box we found is within the threshold, or if
		// we are on the last run (i.e. threshold == 0), return that box.
		if (threshold == 0 || threshold * threshold >= bestDist) {
			abr.box = bestBox;
			return abr;
		}
	}

	return abr;
}

void Actor::adjustActorPos() {
	AdjustBoxResult abr;

	abr = adjustXYToBeInBox(_pos.x, _pos.y);

	_pos.x = abr.x;
	_pos.y = abr.y;
	_walkdata.destbox = abr.box;

	setBox(abr.box);

	_walkdata.dest.x = -1;

	stopActorMoving();
	_cost.soundCounter = 0;
	_cost.soundPos = 0;

	if (_walkbox != kInvalidBox) {
		byte flags = _vm->getBoxFlags(_walkbox);
		if (flags & 7) {
			turnToDirection(_facing);
		}
	}
}

int ScummEngine::getActorFromPos(int x, int y) {
	int i;

	if (!testGfxAnyUsageBits(x / 8))
		return 0;

	for (i = 1; i < _numActors; i++) {
		if (testGfxUsageBit(x / 8, i) && !getClass(i, kObjectClassUntouchable)
			&& y >= _actors[i]->_top && y <= _actors[i]->_bottom) {
			if (_game.version > 2 || i != VAR(VAR_EGO))
				return i;
		}
	}

	return 0;
}

int ScummEngine_v70he::getActorFromPos(int x, int y) {
	int curActor, i;

	if (!testGfxAnyUsageBits(x / 8))
		return 0;

	curActor = 0;
	for (i = 1; i < _numActors; i++) {
		if (testGfxUsageBit(x / 8, i) && !getClass(i, kObjectClassUntouchable)
			&& y >= _actors[i]->_top && y <= _actors[i]->_bottom
			&& (_actors[i]->getPos().y > _actors[curActor]->getPos().y || curActor == 0))
				curActor = i;
	}

	return curActor;
}


#pragma mark -
#pragma mark --- TODO ---
#pragma mark -


void Actor::hideActor() {
	if (!_visible)
		return;

	if (_moving) {
		stopActorMoving();
		startAnimActor(_standFrame);
	}
	_visible = false;
	_cost.soundCounter = 0;
	_cost.soundPos = 0;
	_needRedraw = false;
	_needBgReset = true;
}

void ActorHE::hideActor() {
	Actor::hideActor();
	_auxBlock.reset();
}

void Actor::showActor() {
	if (_vm->_currentRoom == 0 || _visible)
		return;

	adjustActorPos();

	_vm->ensureResourceLoaded(rtCostume, _costume);

	if (_vm->_game.version == 0) {
		Actor_v0 *a = ((Actor_v0 *)this);

		a->_costCommand = a->_costCommandNew = 0xFF;
		_walkdata.dest = a->_CurrentWalkTo;

		for (int i = 0; i < 8; ++i) {
			a->_limbFrameRepeat[i] = 0;
			a->_limbFrameRepeatNew[i] = 0;
		}

		_cost.reset();

		a->_animFrameRepeat = 1;
		a->_speaking = 0;

		startAnimActor(_standFrame);
		_visible = true;
		return;

	} else if (_vm->_game.version <= 2) {
		_cost.reset();
		startAnimActor(_standFrame);
		startAnimActor(_initFrame);
		startAnimActor(_talkStopFrame);
	} else {
		if (_costumeNeedsInit) {
			startAnimActor(_initFrame);
			_costumeNeedsInit = false;
		}
	}

	stopActorMoving();
	_visible = true;
	_needRedraw = true;
}

void ScummEngine::showActors() {
	int i;

	for (i = 1; i < _numActors; i++) {
		if (_actors[i]->isInCurrentRoom())
			_actors[i]->showActor();
	}
}

/* Used in Scumm v5 only. Play sounds associated with actors */
void ScummEngine::playActorSounds() {
	int i, j;
	int sound;

	for (i = 1; i < _numActors; i++) {
		if (_actors[i]->_cost.soundCounter && _actors[i]->isInCurrentRoom()) {
			_currentScript = 0xFF;
			if (_game.version == 0) {
				sound = _actors[i]->_sound[0] & 0x3F;
			} else {
				sound = _actors[i]->_sound[0];
			}
			// fast mode will flood the queue with walk sounds
			if (!_fastMode) {
				_sound->addSoundToQueue(sound);
			}
			for (j = 1; j < _numActors; j++) {
				_actors[j]->_cost.soundCounter = 0;
			}
			return;
		}
	}
}

bool ScummEngine::isValidActor(int id) const {
	return id >= 0 && id < _numActors && _actors[id]->_number == id;
}

Actor *ScummEngine::derefActor(int id, const char *errmsg) const {
	if (id == 0)
		debugC(DEBUG_ACTORS, "derefActor(0, \"%s\") in script %d, opcode 0x%x",
			errmsg, vm.slot[_currentScript].number, _opcode);

	if (!isValidActor(id)) {
		if (errmsg)
			error("Invalid actor %d in %s", id, errmsg);
		else
			error("Invalid actor %d", id);
	}
	return _actors[id];
}

Actor *ScummEngine::derefActorSafe(int id, const char *errmsg) const {
	if (id == 0)
		debugC(DEBUG_ACTORS, "derefActorSafe(0, \"%s\") in script %d, opcode 0x%x",
			errmsg, vm.slot[_currentScript].number, _opcode);

	if (!isValidActor(id)) {
		debugC(DEBUG_ACTORS, "Invalid actor %d in %s (script %d, opcode 0x%x)",
			 id, errmsg, vm.slot[_currentScript].number, _opcode);
		return NULL;
	}
	return _actors[id];
}


#pragma mark -
#pragma mark --- Actor drawing ---
#pragma mark -


void ScummEngine::processActors() {
	int numactors = 0;

	// Make a list of all actors in this room
	for (int i = 1; i < _numActors; i++) {
		if (_game.version == 8 && _actors[i]->_layer < 0)
			continue;
		if (_actors[i]->isInCurrentRoom()) {
			_sortedActors[numactors++] = _actors[i];
		}
	}
	if (!numactors) {
		return;
	}

	// Sort actors by position before drawing them (to ensure that actors
	// in front are drawn after those "behind" them).
	//
	// Note: This algorithm works exactly the way the original engine did.
	// Please resist any urge to 'optimize' this. Many of the games rely on
	// the quirks of this particular sorting algorithm, and since we are
	// dealing with far less than 100 objects being sorted here, any
	// 'optimization' wouldn't yield a useful gain anyway.
	//
	// In particular, changing this loop caused a number of bugs in the
	// past, including bugs #758167, #775097, and #1093867.
	//
	// Note that Sam & Max uses a stable sorting method. Older games don't
	// and, according to cyx, neither do newer ones. At least not FT and
	// COMI. See bug #1220168 for more details.

	if (_game.id == GID_SAMNMAX) {
		for (int j = 0; j < numactors; ++j) {
			for (int i = 0; i < numactors; ++i) {
				int sc_actor1 = _sortedActors[j]->getPos().y;
				int sc_actor2 = _sortedActors[i]->getPos().y;
				if (sc_actor1 == sc_actor2) {
					sc_actor1 += _sortedActors[j]->_number;
					sc_actor2 += _sortedActors[i]->_number;
				}
				if (sc_actor1 < sc_actor2) {
					SWAP(_sortedActors[i], _sortedActors[j]);
				}
			}
		}
	} else if (_game.heversion >= 90) {
		for (int j = 0; j < numactors; ++j) {
			for (int i = 0; i < numactors; ++i) {
				int sc_actor1 = _sortedActors[j]->_layer;
				int sc_actor2 = _sortedActors[i]->_layer;
				if (sc_actor1 < sc_actor2) {
					SWAP(_sortedActors[i], _sortedActors[j]);
				} else if (sc_actor1 == sc_actor2) {
					sc_actor1 = _sortedActors[j]->getPos().y;
					sc_actor2 = _sortedActors[i]->getPos().y;
					if (sc_actor1 < sc_actor2) {
						SWAP(_sortedActors[i], _sortedActors[j]);
					}
				}
			}
		}
	} else if (_game.version == 0) {
		for (int j = 0; j < numactors; ++j) {
			for (int i = 0; i < numactors; ++i) {
				// Note: the plant is handled different in v0, the y value is not used.
				// In v1/2 this is done by the actor's elevation instead.
				int sc_actor1 = (_sortedActors[j]->_number == 19 ? 0 : _sortedActors[j]->getPos().y);
				int sc_actor2 = (_sortedActors[i]->_number == 19 ? 0 : _sortedActors[i]->getPos().y);
				if (sc_actor1 < sc_actor2) {
					SWAP(_sortedActors[i], _sortedActors[j]);
				}
			}
		}
	} else {
		for (int j = 0; j < numactors; ++j) {
			for (int i = 0; i < numactors; ++i) {
				int sc_actor1 = _sortedActors[j]->getPos().y - _sortedActors[j]->_layer * 2000;
				int sc_actor2 = _sortedActors[i]->getPos().y - _sortedActors[i]->_layer * 2000;
				if (sc_actor1 < sc_actor2) {
					SWAP(_sortedActors[i], _sortedActors[j]);
				}
			}
		}
	}

	// Finally draw the now sorted actors
	Actor** end = _sortedActors + numactors;
	for (Actor** ac = _sortedActors; ac != end; ++ac) {
		Actor* a = *ac;

		if (_game.version == 0) {
			// 0x057B
			Actor_v0 *a0 = (Actor_v0*) a;
			if (a0->_speaking & 1) {
				a0->_speaking ^= 0xFE;
				++_V0Delay._actorRedrawCount;
			}
			// 0x22B5
			if (a0->_miscflags & kActorMiscFlagHide)
				continue;

			// Sound
			if (a0->_moving != 2 && _currentRoom != 1 && _currentRoom != 44) {
				if (a0->_cost.soundPos == 0)
					a0->_cost.soundCounter++;

				// Is this the correct location?
				// 0x073C
				if (a0->_sound[0] & 0x3F)
					a0->_cost.soundPos = (a0->_cost.soundPos + 1) % 3;
			}
		}
		// Draw and animate the actors, except those w/o a costume.
		// Note: We could 'optimize' this a little bit by only putting
		// actors with a costume into the _sortedActors array in the
		// first place. However, that would mess up the sorting, and
		// would hence cause regressions. See also the other big
		// comment further up in this method for some details.
		if (a->_costume) {

			// Unfortunately in V0, the 'animateCostume' call happens right after the call to 'walkActor' (which is before drawing the actor)...
			// doing it the other way with V0, causes animation glitches (when beginnning to walk, as the costume hasnt been updated).
			// Updating the costume directly after 'walkActor' and again, after drawing... causes frame skipping
			if (_game.version == 0) {
				a->animateCostume();
				a->drawActorCostume();
			} else {
				a->drawActorCostume();
				a->animateCostume();
			}
		}
	}
}

void ScummEngine_v6::processActors() {
	ScummEngine::processActors();

	if (_game.features & GF_NEW_COSTUMES)
		akos_processQueue();
}

#ifdef ENABLE_HE
void ScummEngine_v71he::processActors() {
	preProcessAuxQueue();

	if (!_skipProcessActors)
		ScummEngine_v6::processActors();

	_fullRedraw = false;

	postProcessAuxQueue();
}

void ScummEngine_v90he::processActors() {
	preProcessAuxQueue();

	_sprite->setRedrawFlags(false);
	_sprite->processImages(true);

	if (!_skipProcessActors)
		ScummEngine_v6::processActors();

	_fullRedraw = false;

	postProcessAuxQueue();

	_sprite->setRedrawFlags(true);
	_sprite->processImages(false);
}
#endif

// Used in Scumm v8, to allow the verb coin to be drawn over the inventory
// chest. I'm assuming that draw order won't matter here.
void ScummEngine::processUpperActors() {
	int i;

	for (i = 1; i < _numActors; i++) {
		if (_actors[i]->isInCurrentRoom() && _actors[i]->_costume && _actors[i]->_layer < 0) {
			_actors[i]->drawActorCostume();
			_actors[i]->animateCostume();
		}
	}
}

void Actor::drawActorCostume(bool hitTestMode) {
	if (_costume == 0)
		return;

	if (!hitTestMode) {
		if (!_needRedraw)
			return;

		_needRedraw = false;
	}

	setupActorScale();

	BaseCostumeRenderer *bcr = _vm->_costumeRenderer;
	prepareDrawActorCostume(bcr);

	// If the actor is partially hidden, redraw it next frame.
	if (bcr->drawCostume(_vm->_virtscr[kMainVirtScreen], _vm->_gdi->_numStrips, this, _drawToBackBuf) & 1) {
		_needRedraw = (_vm->_game.version <= 6);
	}

	if (!hitTestMode) {
		// Record the vertical extent of the drawn actor
		_top = bcr->_draw_top;
		_bottom = bcr->_draw_bottom;
	}
}


void Actor::prepareDrawActorCostume(BaseCostumeRenderer *bcr) {

	bcr->_actorID = _number;
	bcr->_actorX = _pos.x - _vm->_virtscr[kMainVirtScreen].xstart;
	bcr->_actorY = _pos.y - _elevation;

	if (_vm->_game.version == 4 && (_boxscale & 0x8000)) {
		bcr->_scaleX = bcr->_scaleY = _vm->getScaleFromSlot((_boxscale & 0x7fff) + 1, _pos.x, _pos.y);
	} else {
		bcr->_scaleX = _scalex;
		bcr->_scaleY = _scaley;
	}

	bcr->_shadow_mode = _shadowMode;
	if (_vm->_game.version >= 5 && _vm->_game.heversion == 0) {
		bcr->_shadow_table = _vm->_shadowPalette;
	}

	bcr->setCostume(_costume, (_vm->_game.heversion == 0) ? 0 : _heXmapNum);
	bcr->setPalette(_palette);
	bcr->setFacing(this);

	if (_vm->_game.version >= 7) {

		bcr->_zbuf = _forceClip;
		if (bcr->_zbuf == 100) {
			bcr->_zbuf = _vm->getMaskFromBox(_walkbox);
			if (bcr->_zbuf > _vm->_gdi->_numZBuffer-1)
				bcr->_zbuf = _vm->_gdi->_numZBuffer-1;
		}

	} else {
		if (_forceClip)
			bcr->_zbuf = _forceClip;
		else if (isInClass(kObjectClassNeverClip))
			bcr->_zbuf = 0;
		else {
			bcr->_zbuf = _vm->getMaskFromBox(_walkbox);
			if (_vm->_game.version == 0)
				bcr->_zbuf &= 0x03;
			if (bcr->_zbuf > _vm->_gdi->_numZBuffer-1)
				bcr->_zbuf = _vm->_gdi->_numZBuffer-1;
		}

	}

	bcr->_draw_top = 0x7fffffff;
	bcr->_draw_bottom = 0;
}

void ActorHE::prepareDrawActorCostume(BaseCostumeRenderer *bcr) {
	// HE palette number must be set, before setting the costume palette
	bcr->_paletteNum = _hePaletteNum;

	Actor::prepareDrawActorCostume(bcr);

	bcr->_actorX += _heOffsX;
	bcr->_actorY += _heOffsY;

	bcr->_clipOverride = _clipOverride;

	if (_vm->_game.heversion == 70) {
		bcr->_shadow_table = _vm->_HEV7ActorPalette;
	}

	bcr->_skipLimbs = (_heSkipLimbs != 0);

	if (_vm->_game.heversion >= 80 && _heNoTalkAnimation == 0 && _animProgress == 0) {
		if (_vm->getTalkingActor() == _number && !_vm->_string[0].no_talk_anim) {
			int talkState = 0;

			if (((SoundHE *)_vm->_sound)->isSoundCodeUsed(1))
				talkState = ((SoundHE *)_vm->_sound)->getSoundVar(1, 19);
			if (talkState == 0)
				talkState = _vm->_rnd.getRandomNumberRng(1, 10);

			assertRange(1, talkState, 13, "Talk state");
			setTalkCondition(talkState);
		} else {
			setTalkCondition(1);
		}
	}
	_heNoTalkAnimation = 0;
}

void Actor_v2::prepareDrawActorCostume(BaseCostumeRenderer *bcr) {
	Actor::prepareDrawActorCostume(bcr);

	bcr->_actorX = _pos.x;
	bcr->_actorY = _pos.y - _elevation;

	if (_vm->_game.version <= 2) {
		bcr->_actorX *= V12_X_MULTIPLIER;
		bcr->_actorY *= V12_Y_MULTIPLIER;
	}
	bcr->_actorX -= _vm->_virtscr[kMainVirtScreen].xstart;

	if (_vm->_game.platform == Common::kPlatformNES) {
		// In the NES version, when the actor is facing right,
		// we need to shift it 8 pixels to the left
		if (_facing == 90)
			bcr->_actorX -= 8;
	} else if (_vm->_game.version == 0) {
			bcr->_actorX += 12;
	} else if (_vm->_game.version <= 2) {
		// HACK: We have to adjust the x position by one strip (8 pixels) in
		// V2 games. However, it is not quite clear to me why. And to fully
		// match the original, it seems we have to offset by 2 strips if the
		// actor is facing left (270 degree).
		// V1 games are once again slightly different, here we only have
		// to adjust the 270 degree case...
		if (_facing == 270)
			bcr->_actorX += 16;
		else if (_vm->_game.version == 2)
			bcr->_actorX += 8;
	}
}

#ifdef ENABLE_SCUMM_7_8
bool Actor::actorHitTest(int x, int y) {
	AkosRenderer *ar = (AkosRenderer *)_vm->_costumeRenderer;

	ar->_actorHitX = x;
	ar->_actorHitY = y;
	ar->_actorHitMode = true;
	ar->_actorHitResult = false;

	drawActorCostume(true);

	ar->_actorHitMode = false;

	return ar->_actorHitResult;
}
#endif

void Actor::startAnimActor(int f) {
	if (_vm->_game.version >= 7 && !((_vm->_game.id == GID_FT) && (_vm->_game.features & GF_DEMO) && (_vm->_game.platform == Common::kPlatformDOS))) {
		switch (f) {
		case 1001:
			f = _initFrame;
			break;
		case 1002:
			f = _walkFrame;
			break;
		case 1003:
			f = _standFrame;
			break;
		case 1004:
			f = _talkStartFrame;
			break;
		case 1005:
			f = _talkStopFrame;
			break;
		}

		if (_costume != 0) {
			_animProgress = 0;
			_needRedraw = true;
			if (f == _initFrame)
				_cost.reset();
			_vm->_costumeLoader->costumeDecodeData(this, f, (uint) - 1);
			_frame = f;
		}
	} else {
		switch (f) {
		case 0x38:
			f = _initFrame;
			break;
		case 0x39:
			f = _walkFrame;
			break;
		case 0x3A:
			f = _standFrame;
			break;
		case 0x3B:
			f = _talkStartFrame;
			break;
		case 0x3C:
			f = _talkStopFrame;
			break;
		}

		assert(f != 0x3E);

		if (isInCurrentRoom() && _costume != 0) {
			_animProgress = 0;
			_needRedraw = true;
			_cost.animCounter = 0;
			// V1 - V2 games don't seem to need a _cost.reset() at this point.
			// Causes Zak to lose his body in several scenes, see bug #771508
			if (_vm->_game.version >= 3 && f == _initFrame) {
				_cost.reset();
				if (_vm->_game.heversion != 0) {
				((ActorHE *)this)->_auxBlock.reset();
				}
			}
			_vm->_costumeLoader->costumeDecodeData(this, f, (uint) - 1);
			_frame = f;
		}
	}
}

void Actor_v0::startAnimActor(int f) {
	if (f == _talkStartFrame) {
		if (_sound[0] & 0x40)
			return;

		_speaking = 1;
		speakCheck();
		return;
	}

	if (f == _talkStopFrame) {

		_speaking = 0;
		return;
	}

	if (f == _standFrame)
		setDirection(_facing);
}

void Actor::animateActor(int anim) {
	int cmd, dir;

	if (_vm->_game.version >= 7 && !((_vm->_game.id == GID_FT) && (_vm->_game.features & GF_DEMO) && (_vm->_game.platform == Common::kPlatformDOS))) {

		if (anim == 0xFF)
			anim = 2000;

		cmd = anim / 1000;
		dir = anim % 1000;

	} else {

		cmd = anim / 4;
		dir = oldDirToNewDir(anim % 4);

		// Convert into old cmd code
		cmd = 0x3F - cmd + 2;

	}

	switch (cmd) {
	case 2:				// stop walking
		startAnimActor(_standFrame);
		stopActorMoving();
		break;
	case 3:				// change direction immediatly
		_moving &= ~MF_TURN;
		setDirection(dir);
		break;
	case 4:				// turn to new direction
		turnToDirection(dir);
		break;
	case 64:
		if (_vm->_game.version == 0) {
			_moving &= ~MF_TURN;
			setDirection(dir);
			break;
		}
		// fall through
	default:
		if (_vm->_game.version <= 2)
			startAnimActor(anim / 4);
		else
			startAnimActor(anim);
	}
}

void Actor::animateCostume() {
	if (_costume == 0)
		return;

	_animProgress++;
	if (_animProgress >= _animSpeed) {
		_animProgress = 0;

		_vm->_costumeLoader->loadCostume(_costume);
		if (_vm->_costumeLoader->increaseAnims(this)) {
			_needRedraw = true;
		}
	}
}

void Actor_v0::limbFrameCheck(int limb) {
	if (_cost.frame[limb] == 0xFFFF)
		return;

	if (_cost.start[limb] == _cost.frame[limb])
		return;

	// 0x25A4
	_cost.start[limb] = _cost.frame[limb];

	_limbFrameRepeat[limb] = _limbFrameRepeatNew[limb];

	// 0x25C3
	_cost.active[limb] = ((V0CostumeLoader *)_vm->_costumeLoader)->getFrame(this, limb);
	_cost.curpos[limb] = 0;

	_needRedraw = true;
}

void Actor_v0::animateCostume() {
	speakCheck();

	byte count = _vm->_costumeLoader->increaseAnims(this);

	if (count) {
		_vm->_V0Delay._actorLimbRedrawDrawCount += count;

		_needRedraw = true;
	}
}

void Actor_v0::speakCheck() {
	if (_sound[0] & 0x80)
		return;

	int cmd = newDirToOldDir(_facing);

	if (_speaking & 0x80)
		cmd += 0x0C;
	else
		cmd += 0x10;

	_animFrameRepeat = -1;
	animateActor(cmd);
}

#ifdef ENABLE_SCUMM_7_8
void Actor::animateLimb(int limb, int f) {
	// This methods is very similiar to animateCostume().
	// However, instead of animating *all* the limbs, it only animates
	// the specified limb to be at the frame specified by "f".

	if (!f)
		return;

	_animProgress++;
	if (_animProgress >= _animSpeed) {
		_animProgress = 0;

		if (_costume == 0)
			return;

		const byte *aksq, *akfo;
		uint size;
		byte *akos = _vm->getResourceAddress(rtCostume, _costume);
		assert(akos);

		aksq = _vm->findResourceData(MKTAG('A','K','S','Q'), akos);
		akfo = _vm->findResourceData(MKTAG('A','K','F','O'), akos);

		size = _vm->getResourceDataSize(akfo) / 2;

		while (f--) {
			if (_cost.active[limb] != 0)
				((ScummEngine_v6 *)_vm)->akos_increaseAnim(this, limb, aksq, (const uint16 *)akfo, size);
		}

//		_needRedraw = true;
//		_needBgReset = true;
	}
}
#endif

void ScummEngine::redrawAllActors() {
	int i;

	for (i = 1; i < _numActors; ++i) {
		_actors[i]->_needRedraw = true;
		_actors[i]->_needBgReset = true;
	}
}

void ScummEngine::setActorRedrawFlags() {
	int i, j;

	// Redraw all actors if a full redraw was requested.
	// Also redraw all actors in COMI (see bug #1066329 for details).
	if (_fullRedraw || _game.version == 8 || (VAR_REDRAW_ALL_ACTORS != 0xFF && VAR(VAR_REDRAW_ALL_ACTORS) != 0)) {
		for (j = 1; j < _numActors; j++) {
			_actors[j]->_needRedraw = true;
		}
	} else {
		if (_game.heversion >= 72) {
			for (j = 1; j < _numActors; j++) {
				if (_actors[j]->_costume && _actors[j]->_heXmapNum)
					_actors[j]->_needRedraw = true;
			}
		}

		for (i = 0; i < _gdi->_numStrips; i++) {
			int strip = _screenStartStrip + i;
			if (testGfxAnyUsageBits(strip)) {
				for (j = 1; j < _numActors; j++) {
					if (testGfxUsageBit(strip, j) && testGfxOtherUsageBits(strip, j)) {
						_actors[j]->_needRedraw = true;
					}
				}
			}
		}
	}
}

void ScummEngine::resetActorBgs() {
	int i, j;

	for (i = 0; i < _gdi->_numStrips; i++) {
		int strip = _screenStartStrip + i;
		clearGfxUsageBit(strip, USAGE_BIT_DIRTY);
		clearGfxUsageBit(strip, USAGE_BIT_RESTORED);
		for (j = 1; j < _numActors; j++) {
			if (_game.heversion != 0 && ((ActorHE *)_actors[j])->_heFlags & 1)
				continue;

			if (testGfxUsageBit(strip, j) &&
				((_actors[j]->_top != 0x7fffffff && _actors[j]->_needRedraw) || _actors[j]->_needBgReset)) {
				clearGfxUsageBit(strip, j);
				if ((_actors[j]->_bottom - _actors[j]->_top) >= 0)
					_gdi->resetBackground(_actors[j]->_top, _actors[j]->_bottom, i);
			}
		}
	}

	for (i = 1; i < _numActors; i++) {
		_actors[i]->_needBgReset = false;
	}
}

// HE specific
void ActorHE::drawActorToBackBuf(int x, int y) {
	int curTop = _top;
	int curBottom = _bottom;

	_pos.x = x;
	_pos.y = y;

	_drawToBackBuf = true;
	_needRedraw = true;
	drawActorCostume();

	_drawToBackBuf = false;
	_needRedraw = true;
	drawActorCostume();
	_needRedraw = false;

	if (_top > curTop)
		_top = curTop;
	if (_bottom < curBottom)
		_bottom = curBottom;
}


#pragma mark -
#pragma mark --- Actor talking ---
#pragma mark -


// V1 Maniac doesn't have a ScummVar for VAR_TALK_ACTOR, and just uses
// an internal variable. Emulate this to prevent overwriting script vars...
// Maniac NES (V1), however, DOES have a ScummVar for VAR_TALK_ACTOR
int ScummEngine::getTalkingActor() {
	if (_game.id == GID_MANIAC && _game.version <= 1 && !(_game.platform == Common::kPlatformNES))
		return _V1TalkingActor;
	else
		return VAR(VAR_TALK_ACTOR);
}

void ScummEngine::setTalkingActor(int i) {

	if (i == 255) {
		_system->clearFocusRectangle();
	} else {
		// Work out the screen co-ordinates of the actor
		int x = _actors[i]->getPos().x - (camera._cur.x - (_screenWidth >> 1));
		int y = _actors[i]->_top - (camera._cur.y - (_screenHeight >> 1));

		// Set the focus area to the calculated position
		// TODO: Make the size adjust depending on what it's focusing on.
		_system->setFocusRectangle(Common::Rect::center(x, y, 192, 128));
	}

	if (_game.id == GID_MANIAC && _game.version <= 1 && !(_game.platform == Common::kPlatformNES))
		_V1TalkingActor = i;
	else
		VAR(VAR_TALK_ACTOR) = i;
}

static const int v0MMActorTalkColor[25] = {
	1, 7, 2, 14, 8, 15, 3, 7, 7, 15, 1, 13, 1, 4, 5, 5, 4, 3, 1, 5, 1, 1, 1, 1, 7
};
static const int v1MMActorTalkColor[25] = {
	1, 7, 2, 14, 8, 1, 3, 7, 7, 12, 1, 13, 1, 4, 5, 5, 4, 3, 1, 5, 1, 1, 1, 7, 7
};

void ScummEngine::resetV1ActorTalkColor() {
	int i;

	for (i = 1; i < _numActors; i++) {
		if (_game.version == 0) {
			_actors[i]->_talkColor = v0MMActorTalkColor[i];
		} else {
			_actors[i]->_talkColor = v1MMActorTalkColor[i];
		}
	}
}

#ifdef ENABLE_SCUMM_7_8
void ScummEngine_v7::actorTalk(const byte *msg) {
	Actor *a;
	bool stringWrap = false;

	convertMessageToString(msg, _charsetBuffer, sizeof(_charsetBuffer));

	// Play associated speech, if any
	playSpeech((byte *)_lastStringTag);

	if (_game.id == GID_DIG || _game.id == GID_CMI) {
		if (VAR(VAR_HAVE_MSG))
			stopTalk();
	} else {
		if (!_keepText)
			stopTalk();
	}
	if (_actorToPrintStrFor == 0xFF) {
		setTalkingActor(0xFF);
		_charsetColor = (byte)_string[0].color;
	} else {
		a = derefActor(_actorToPrintStrFor, "actorTalk");
		setTalkingActor(a->_number);
		if (!_string[0].no_talk_anim) {
			a->runActorTalkScript(a->_talkStartFrame);
		}
		_charsetColor = a->_talkColor;
	}

	_charsetBufPos = 0;
	_talkDelay = 0;
	_haveMsg = 1;
	if (_game.id == GID_FT)
		VAR(VAR_HAVE_MSG) = 0xFF;
	_haveActorSpeechMsg = (_game.id == GID_FT) ? true : (!_sound->isSoundRunning(kTalkSoundID));
	if (_game.id == GID_DIG || _game.id == GID_CMI) {
		stringWrap = _string[0].wrapping;
		_string[0].wrapping = true;
	}
	CHARSET_1();
	if (_game.id == GID_DIG || _game.id == GID_CMI) {
		if (_game.version == 8)
			VAR(VAR_HAVE_MSG) = (_string[0].no_talk_anim) ? 2 : 1;
		else
			VAR(VAR_HAVE_MSG) = 1;
		_string[0].wrapping = stringWrap;
	}
}
#endif

void ScummEngine::actorTalk(const byte *msg) {
	Actor *a;

	convertMessageToString(msg, _charsetBuffer, sizeof(_charsetBuffer));

	// WORKAROUND for bugs #770039 and #770049
	if (_game.id == GID_LOOM) {
		if (!*_charsetBuffer)
			return;
	}

	if (_actorToPrintStrFor == 0xFF) {
		if (!_keepText) {
			stopTalk();
		}
		setTalkingActor(0xFF);
	} else {
		int oldact;

		// WORKAROUND bug #770724
		if (_game.id == GID_LOOM && _roomResource == 23 &&
			vm.slot[_currentScript].number == 232 && _actorToPrintStrFor == 0) {
			_actorToPrintStrFor = 2;	// Could be anything from 2 to 5. Maybe compare to original?
		}

		a = derefActor(_actorToPrintStrFor, "actorTalk");
		if (!a->isInCurrentRoom()) {
			oldact = 0xFF;
		} else {
			if (!_keepText) {
				stopTalk();
			}
			setTalkingActor(a->_number);
			if (_game.heversion != 0)
				((ActorHE *)a)->_heTalking = true;
			if (!_string[0].no_talk_anim) {
				a->runActorTalkScript(a->_talkStartFrame);
				_useTalkAnims = true;
			}
			oldact = getTalkingActor();
		}
		if (oldact >= 0x80)
			return;
	}

	if (_game.heversion >= 72 || getTalkingActor() > 0x7F) {
		_charsetColor = (byte)_string[0].color;
	} else if (_game.platform == Common::kPlatformNES) {
		if (_NES_lastTalkingActor != getTalkingActor())
			_NES_talkColor ^= 1;
		_NES_lastTalkingActor = getTalkingActor();
		_charsetColor = _NES_talkColor;
	} else {
		a = derefActor(getTalkingActor(), "actorTalk(2)");
		_charsetColor = a->_talkColor;
	}
	_charsetBufPos = 0;
	_talkDelay = 0;
	_haveMsg = 0xFF;
	VAR(VAR_HAVE_MSG) = 0xFF;
	if (VAR_CHARCOUNT != 0xFF)
		VAR(VAR_CHARCOUNT) = 0;
	_haveActorSpeechMsg = true;
	CHARSET_1();
}

void Actor::runActorTalkScript(int f) {
	if (_vm->_game.version == 8 && _vm->VAR(_vm->VAR_HAVE_MSG) == 2)
		return;

	if (_vm->_game.id == GID_FT && _vm->_string[0].no_talk_anim)
		return;

	if (!_vm->getTalkingActor() || _room != _vm->_currentRoom || _frame == f)
		return;

	if (_talkScript) {
		int script = _talkScript;
		int args[NUM_SCRIPT_LOCAL];
		memset(args, 0, sizeof(args));
		args[1] = f;
		args[0] = _number;

		_vm->runScript(script, 1, 0, args);
	} else {
		startAnimActor(f);
	}
}

void ScummEngine::stopTalk() {
	int act;

	_sound->stopTalkSound();

	_haveMsg = 0;
	_talkDelay = 0;

	act = getTalkingActor();
	if (act && act < 0x80) {
		Actor *a = derefActor(act, "stopTalk");
		if ((_game.version >= 7 && !_string[0].no_talk_anim) ||
			(_game.version <= 6 && a->isInCurrentRoom() && _useTalkAnims)) {
			a->runActorTalkScript(a->_talkStopFrame);
			_useTalkAnims = false;
		}
		if (_game.version <= 7 && _game.heversion == 0)
			setTalkingActor(0xFF);
		if (_game.heversion != 0)
			((ActorHE *)a)->_heTalking = false;
	}

	if (_game.id == GID_DIG || _game.id == GID_CMI) {
		setTalkingActor(0);
		VAR(VAR_HAVE_MSG) = 0;
	} else if (_game.heversion >= 60) {
		setTalkingActor(0);
	}

	_keepText = false;
	if (_game.version >= 7) {
#ifdef ENABLE_SCUMM_7_8
		((ScummEngine_v7 *)this)->clearSubtitleQueue();
#endif
	} else {
#ifndef DISABLE_TOWNS_DUAL_LAYER_MODE
		if (_game.platform == Common::kPlatformFMTowns)
			towns_restoreCharsetBg();
		else
#endif
			restoreCharsetBg();
	}
}


#pragma mark -
#pragma mark --- TODO ---
#pragma mark -


void ActorHE::setActorCostume(int c) {
	if (_vm->_game.heversion >= 61 && (c == -1  || c == -2)) {
		_heSkipLimbs = (c == -1);
		_needRedraw = true;
		return;
	}

	// Based on disassembly. It seems that high byte is not used at all, though
	// it is attached to all horizontally flipped object, like left eye.
	if (_vm->_game.heversion >= 61 && _vm->_game.heversion <= 62)
		c &= 0xff;

	if (_vm->_game.features & GF_NEW_COSTUMES) {
#ifdef ENABLE_HE
		if (_vm->_game.heversion >= 71)
			((ScummEngine_v71he *)_vm)->queueAuxBlock(this);
#endif
		_auxBlock.reset();
		if (_visible) {
			if (_vm->_game.heversion >= 60)
				_needRedraw = true;
		}
	}

	Actor::setActorCostume(c);

	if (_vm->_game.heversion >= 71 && _vm->getTalkingActor() == _number) {
		if (_vm->_game.heversion <= 95 || (_vm->_game.heversion >= 98 && _vm->VAR(_vm->VAR_SKIP_RESET_TALK_ACTOR) == 0)) {
			_vm->setTalkingActor(0);
		}
	}
}

void Actor::setActorCostume(int c) {
	int i;

	_costumeNeedsInit = true;

	if (_vm->_game.features & GF_NEW_COSTUMES) {
		memset(_animVariable, 0, sizeof(_animVariable));

		_costume = c;
		_cost.reset();

		if (_visible) {
			if (_costume) {
				_vm->ensureResourceLoaded(rtCostume, _costume);
			}
			startAnimActor(_initFrame);
		}
	} else {
		if (_visible) {
			hideActor();
			_cost.reset();
			_costume = c;
			showActor();
		} else {
			_costume = c;
			_cost.reset();
		}
	}


	// V1 zak uses palette[] as a dynamic costume color array.
	if (_vm->_game.version <= 1)
		return;

	if (_vm->_game.features & GF_NEW_COSTUMES) {
		for (i = 0; i < 256; i++)
			_palette[i] = 0xFF;
	} else if (_vm->_game.features & GF_OLD_BUNDLE) {
		for (i = 0; i < 16; i++)
			_palette[i] = i;

		// Make stuff more visible on CGA. Based on disassembly
		if (_vm->_renderMode == Common::kRenderCGA && _vm->_game.version > 2) {
			_palette[6] = 5;
			_palette[7] = 15;
		}
	} else {
		for (i = 0; i < 32; i++)
			_palette[i] = 0xFF;
	}
}

static const char *const v0ActorNames_English[25] = {
	"Syd",
	"Razor",
	"Dave",
	"Michael",
	"Bernard",
	"Wendy",
	"Jeff",
	"", // Radiation Suit
	"Dr Fred",
	"Nurse Edna",
	"Weird Ed",
	"Dead Cousin Ted",
	"Purple Tentacle",
	"Green Tentacle",
	"", // Meteor Police
	"Meteor",
	"", // Mark Eteer
	"", // Talkshow Host
	"Plant",
	"", // Meteor Radiation
	"", // Edsel (small, outro)
	"", // Meteor (small, intro)
	"Sandy", // (Lab)
	"", // Sandy (Cut-Scene)
};

static const char *const v0ActorNames_German[25] = {
	"Syd",
	"Razor",
	"Dave",
	"Michael",
	"Bernard",
	"Wendy",
	"Jeff",
	"",
	"Dr.Fred",
	"Schwester Edna",
	"Weird Ed",
	"Ted",
	"Lila Tentakel",
	"Gr<nes Tentakel",
	"",
	"Meteor",
	"",
	"",
	"Pflanze",
	"",
	"",
	"",
	"Sandy",
	"",
};

const byte *Actor::getActorName() {
	const byte *ptr = NULL;

	if (_vm->_game.version == 0) {
		if (_number) {
			switch (_vm->_language) {
			case Common::DE_DEU:
				ptr = (const byte *)v0ActorNames_German[_number - 1];
				break;
			default:
				ptr = (const byte *)v0ActorNames_English[_number - 1];
			}
		}
	} else {
		ptr = _vm->getResourceAddress(rtActorName, _number);
	}

	if (ptr == NULL) {
		debugC(DEBUG_ACTORS, "Failed to find name of actor %d", _number);
	}
	return ptr;
}

int Actor::getAnimVar(byte var) const {
	assertRange(0, var, 26, "getAnimVar:");
	return _animVariable[var];
}

void Actor::setAnimVar(byte var, int value) {
	assertRange(0, var, 26, "setAnimVar:");
	_animVariable[var] = value;
}

void Actor::remapActorPaletteColor(int color, int new_color) {
	const byte *akos, *akpl;
	int akpl_size, i;
	byte akpl_color;

	akos = _vm->getResourceAddress(rtCostume, _costume);
	if (!akos) {
		debugC(DEBUG_ACTORS, "Actor::remapActorPaletteColor: Can't remap actor %d, costume %d not found", _number, _costume);
		return;
	}

	akpl = _vm->findResourceData(MKTAG('A','K','P','L'), akos);
	if (!akpl) {
		debugC(DEBUG_ACTORS, "Actor::remapActorPaletteColor: Can't remap actor %d, costume %d doesn't contain an AKPL block", _number, _costume);
		return;
	}

	// Get the number palette entries
	akpl_size = _vm->getResourceDataSize(akpl);

	for (i = 0; i < akpl_size; i++) {
		akpl_color = *akpl++;
		if (akpl_color == color) {
			_palette[i] = new_color;
			return;
		}
	}
}

void Actor::remapActorPalette(int r_fact, int g_fact, int b_fact, int threshold) {
	const byte *akos, *rgbs, *akpl;
	int akpl_size, i;
	int r, g, b;
	byte akpl_color;

	if (!isInCurrentRoom()) {
		debugC(DEBUG_ACTORS, "Actor::remapActorPalette: Actor %d not in current room", _number);
		return;
	}

	akos = _vm->getResourceAddress(rtCostume, _costume);
	if (!akos) {
		debugC(DEBUG_ACTORS, "Actor::remapActorPalette: Can't remap actor %d, costume %d not found", _number, _costume);
		return;
	}

	akpl = _vm->findResourceData(MKTAG('A','K','P','L'), akos);
	if (!akpl) {
		debugC(DEBUG_ACTORS, "Actor::remapActorPalette: Can't remap actor %d, costume %d doesn't contain an AKPL block", _number, _costume);
		return;
	}

	// Get the number palette entries
	akpl_size = _vm->getResourceDataSize(akpl);

	rgbs = _vm->findResourceData(MKTAG('R','G','B','S'), akos);

	if (!rgbs) {
		debugC(DEBUG_ACTORS, "Actor::remapActorPalette: Can't remap actor %d costume %d doesn't contain an RGB block", _number, _costume);
		return;
	}

	for (i = 0; i < akpl_size; i++) {
		r = *rgbs++;
		g = *rgbs++;
		b = *rgbs++;

		akpl_color = *akpl++;

		// allow remap of generic palette entry?
		if (!_shadowMode || akpl_color >= 16) {
			r = (r * r_fact) >> 8;
			g = (g * g_fact) >> 8;
			b = (b * b_fact) >> 8;
			_palette[i] = _vm->remapPaletteColor(r, g, b, threshold);
		}
	}
}

void Actor::classChanged(int cls, bool value) {
	if (cls == kObjectClassAlwaysClip)
		_forceClip = value;
	if (cls == kObjectClassIgnoreBoxes)
		_ignoreBoxes = value;
}

bool Actor::isInClass(int cls) {
	return _vm->getClass(_number, cls);
}

bool Actor::isPlayer() {
	return isInClass(kObjectClassPlayer);
}

bool Actor_v2::isPlayer() {
	// isPlayer() is not supported by v0
	assert(_vm->_game.version != 0);
	return _vm->VAR(42) <= _number && _number <= _vm->VAR(43);
}

void ActorHE::setHEFlag(int bit, int set) {
	// Note that condition is inverted
	if (!set) {
		_heFlags |= bit;
	} else {
		_heFlags &= ~bit;
	}
}

void ActorHE::setUserCondition(int slot, int set) {
	const int condMaskCode = (_vm->_game.heversion >= 85) ? 0x1FFF : 0x3FF;
	assertRange(1, slot, 32, "setUserCondition: Condition");
	if (set == 0) {
		_heCondMask &= ~(1 << (slot + 0xF));
	} else {
		_heCondMask |= 1 << (slot + 0xF);
	}
	if (_heCondMask & condMaskCode) {
		_heCondMask &= ~1;
	} else {
		_heCondMask |= 1;
	}
}

bool ActorHE::isUserConditionSet(int slot) const {
	assertRange(1, slot, 32, "isUserConditionSet: Condition");
	return (_heCondMask & (1 << (slot + 0xF))) != 0;
}

void ActorHE::setTalkCondition(int slot) {
	const int condMaskCode = (_vm->_game.heversion >= 85) ? 0x1FFF : 0x3FF;
	assertRange(1, slot, 32, "setTalkCondition: Condition");
	_heCondMask = (_heCondMask & ~condMaskCode) | 1;
	if (slot != 1) {
		_heCondMask |= 1 << (slot - 1);
		if (_heCondMask & condMaskCode) {
			_heCondMask &= ~1;
		} else {
			_heCondMask |= 1;
		}
	}
}

bool ActorHE::isTalkConditionSet(int slot) const {
	assertRange(1, slot, 32, "isTalkConditionSet: Condition");
	return (_heCondMask & (1 << (slot - 1))) != 0;
}

#ifdef ENABLE_HE
void ScummEngine_v71he::preProcessAuxQueue() {
	if (!_skipProcessActors) {
		for (int i = 0; i < _auxBlocksNum; ++i) {
			AuxBlock *ab = &_auxBlocks[i];
			if (ab->r.top <= ab->r.bottom) {
				restoreBackgroundHE(ab->r);
			}
		}
	}
	_auxBlocksNum = 0;
}

void ScummEngine_v71he::postProcessAuxQueue() {
	if (!_skipProcessActors) {
		for (int i = 0; i < _auxEntriesNum; ++i) {
			AuxEntry *ae = &_auxEntries[i];
			if (ae->actorNum != -1) {
				ActorHE *a = (ActorHE *)derefActor(ae->actorNum, "postProcessAuxQueue");
				const uint8 *cost = getResourceAddress(rtCostume, a->_costume);
				int dy = a->_heOffsY + a->getPos().y;
				int dx = a->_heOffsX + a->getPos().x;

				if (_game.heversion >= 72)
					dy -= a->getElevation();

				const uint8 *akax = findResource(MKTAG('A','K','A','X'), cost);
				assert(akax);
				const uint8 *auxd = findPalInPals(akax, ae->subIndex) - _resourceHeaderSize;
				assert(auxd);
				const uint8 *frel = findResourceData(MKTAG('F','R','E','L'), auxd);
				if (frel) {
					error("unhandled FREL block");
				}
				const uint8 *disp = findResourceData(MKTAG('D','I','S','P'), auxd);
				if (disp) {
					error("unhandled DISP block");
				}
				const uint8 *axfd = findResourceData(MKTAG('A','X','F','D'), auxd);
				assert(axfd);

				uint16 comp = READ_LE_UINT16(axfd);
				if (comp != 0) {
					int x = (int16)READ_LE_UINT16(axfd + 2) + dx;
					int y = (int16)READ_LE_UINT16(axfd + 4) + dy;
					int w = (int16)READ_LE_UINT16(axfd + 6);
					int h = (int16)READ_LE_UINT16(axfd + 8);
					VirtScreen *pvs = &_virtscr[kMainVirtScreen];
					uint8 *dst1 = pvs->getPixels(0, pvs->topline);
					uint8 *dst2 = pvs->getBackPixels(0, pvs->topline);
					switch (comp) {
					case 1:
						Wiz::copyAuxImage(dst1, dst2, axfd + 10, pvs->pitch, pvs->h, x, y, w, h, _bytesPerPixel);
						break;
					default:
						error("unimplemented compression type %d", comp);
					}
				}
				const uint8 *axur = findResourceData(MKTAG('A','X','U','R'), auxd);
				if (axur) {
					uint16 n = READ_LE_UINT16(axur); axur += 2;
					while (n--) {
						int x1 = (int16)READ_LE_UINT16(axur + 0) + dx;
						int y1 = (int16)READ_LE_UINT16(axur + 2) + dy;
						int x2 = (int16)READ_LE_UINT16(axur + 4) + dx;
						int y2 = (int16)READ_LE_UINT16(axur + 6) + dy;
						markRectAsDirty(kMainVirtScreen, x1, x2, y1, y2 + 1);
						axur += 8;
					}
				}
				const uint8 *axer = findResourceData(MKTAG('A','X','E','R'), auxd);
				if (axer) {
					a->_auxBlock.visible  = true;
					a->_auxBlock.r.left   = (int16)READ_LE_UINT16(axer + 0) + dx;
					a->_auxBlock.r.top    = (int16)READ_LE_UINT16(axer + 2) + dy;
					a->_auxBlock.r.right  = (int16)READ_LE_UINT16(axer + 4) + dx;
					a->_auxBlock.r.bottom = (int16)READ_LE_UINT16(axer + 6) + dy;
					adjustRect(a->_auxBlock.r);
				}
			}
		}
	}
	_auxEntriesNum = 0;
}

void ScummEngine_v71he::queueAuxBlock(ActorHE *a) {
	if (!a->_auxBlock.visible)
		return;

	assert(_auxBlocksNum < ARRAYSIZE(_auxBlocks));
	_auxBlocks[_auxBlocksNum] = a->_auxBlock;
	++_auxBlocksNum;
}

void ScummEngine_v71he::queueAuxEntry(int actorNum, int subIndex) {
	assert(_auxEntriesNum < ARRAYSIZE(_auxEntries));
	AuxEntry *ae = &_auxEntries[_auxEntriesNum];
	ae->actorNum = actorNum;
	ae->subIndex = subIndex;
	++_auxEntriesNum;
}
#endif

void Actor_v0::animateActor(int anim) {
	int dir = -1;

	switch (anim) {
		case 0x00:
		case 0x04:
			dir = 0;
			break;

		case 0x01:
		case 0x05:
			dir = 1;
			break;

		case 0x02:
		case 0x06:
			dir = 2;
			break;

		case 0x03:
		case 0x07:
			dir = 3;
			break;

		default:
			break;
	}

	if (isInCurrentRoom()) {

		_costCommandNew = anim;
		_vm->_costumeLoader->costumeDecodeData(this, 0, 0);

		if (dir == -1)
			return;

		_facing = normalizeAngle(oldDirToNewDir(dir));

	} else {

		if (anim >= 4 && anim <= 7)
			_facing = normalizeAngle(oldDirToNewDir(dir));
	}
}

byte Actor_v0::updateWalkbox() {
	if (_vm->checkXYInBoxBounds(_walkbox, _pos.x, _pos.y))
		return 0;

	int numBoxes = _vm->getNumBoxes() - 1;
	for (int i = 0; i <= numBoxes; i++) {
		if (_vm->checkXYInBoxBounds(i, _pos.x, _pos.y) == true) {
			if (_walkdata.curbox == i) {
				setBox(i);
				directionUpdate();

				_newWalkBoxEntered = true;
				return i;
			}
		}
	}

	return kInvalidBox;
}

void Actor_v0::directionUpdate() {

	int nextFacing = updateActorDirection(true);
	if (_facing != nextFacing) {
		// 2A89
		setDirection(nextFacing);

		// Still need to turn?
		if (_facing != _targetFacing) {
			_moving |= 0x80;
			return;
		}
	}

	_moving &= ~0x80;
}

void Actor_v0::setActorToTempPosition() {
	_tmp_Pos = _pos;
	_pos = _tmp_NewPos;
	_tmp_WalkBox = _walkbox;
	_tmp_NewWalkBoxEntered = _newWalkBoxEntered;
}

void Actor_v0::setActorToOriginalPosition() {
	_pos = _tmp_Pos;
	_tmp_NewPos = _tmp_Pos;
	_walkbox = _tmp_WalkBox;
	_newWalkBoxEntered = _tmp_NewWalkBoxEntered;
}

void Actor_v0::actorSetWalkTo() {

	if (_newWalkBoxEntered == false)
		return;

	_newWalkBoxEntered = false;

	int nextBox = ((ScummEngine_v0 *)_vm)->walkboxFindTarget(this, _walkdata.destbox, _walkdata.dest);
	if (nextBox != kInvalidBox) {
		_walkdata.curbox = nextBox;
	}
}

void Actor_v0::saveLoadWithSerializer(Common::Serializer &s) {
	Actor::saveLoadWithSerializer(s);

	s.syncAsByte(_costCommand, VER(84));
	s.skip(1, VER(84), VER(89)); // _costFrame
	s.syncAsByte(_miscflags, VER(84));
	s.syncAsByte(_speaking, VER(84));
	s.skip(1, VER(84), VER(89)); // _speakingPrev
	s.skip(1, VER(89), VER(89)); // _limbTemp
	s.syncAsByte(_animFrameRepeat, VER(89));
	s.syncArray(_limbFrameRepeatNew, 8, Common::Serializer::SByte, VER(89));
	s.syncArray(_limbFrameRepeat, 8, Common::Serializer::SByte, VER(90));
	s.syncAsSint16LE(_CurrentWalkTo.x, VER(97));
	s.syncAsSint16LE(_CurrentWalkTo.y, VER(97));
	s.syncAsSint16LE(_NewWalkTo.x, VER(97));
	s.syncAsSint16LE(_NewWalkTo.y, VER(97));
	s.syncAsSByte(_walkCountModulo, VER(97));
	s.syncAsByte(_newWalkBoxEntered, VER(97));
	s.syncAsByte(_walkDirX, VER(97));
	s.syncAsByte(_walkDirY, VER(97));
	s.syncAsByte(_walkYCountGreaterThanXCount, VER(97));
	s.syncAsByte(_walkXCount, VER(97));
	s.syncAsByte(_walkXCountInc, VER(97));
	s.syncAsByte(_walkYCount, VER(97));
	s.syncAsByte(_walkYCountInc, VER(97));
	s.syncAsByte(_walkMaxXYCountInc, VER(97));

	s.syncBytes(_walkboxQueue, 16, VER(98));
	s.syncAsByte(_walkboxQueueIndex, VER(98));

	// When loading, we need to ensure the limbs are restarted
	if (s.isLoading()) {

		// valid costume command?
		if (_costCommand != 0xFF) {

			// Do we have a walkbox queue?
			if (_walkboxQueueIndex < 1) {
				_costCommand = 0xFF;

				// Standing Still
				setDirection(_facing);
				speakCheck();

			} else {
				// Force limb direction update
				_facing = 0;
				directionUpdate();

				// Begin walking
				animateActor(newDirToOldDir(_facing));
			}
		}
	}
}

void Actor::saveLoadWithSerializer(Common::Serializer &s) {
	if (s.isLoading()) {
		// Not all actor data is saved; so when loading, we first reset
		// the actor, to ensure completely reproducible behavior (else,
		// some not saved value in the actor class can cause odd things)
		initActor(-1);
	}

	s.syncAsSint16LE(_pos.x, VER(8));
	s.syncAsSint16LE(_pos.y, VER(8));
	s.syncAsSint16LE(_heOffsX, VER(32));
	s.syncAsSint16LE(_heOffsY, VER(32));
	s.syncAsSint16LE(_top, VER(8));
	s.syncAsSint16LE(_bottom, VER(8));
	s.syncAsSint16LE(_elevation, VER(8));
	s.syncAsUint16LE(_width, VER(8));
	s.syncAsUint16LE(_facing, VER(8));
	s.syncAsUint16LE(_costume, VER(8));
	s.syncAsByte(_room, VER(8));
	s.syncAsByte(_talkColor, VER(8));
	s.syncAsSint16LE(_talkFrequency, VER(16));
	s.syncAsSint16LE(_talkPan, VER(24));
	s.syncAsSint16LE(_talkVolume, VER(29));
	s.syncAsUint16LE(_boxscale, VER(34));
	s.syncAsByte(_scalex, VER(8));
	s.syncAsByte(_scaley, VER(8));
	s.syncAsByte(_charset, VER(8));

	// Actor sound grew from 8 to 32 bytes and switched to uint16 in HE games
	s.syncArray(_sound, 8, Common::Serializer::Byte, VER(8), VER(36));
	s.syncArray(_sound, 32, Common::Serializer::Byte, VER(37), VER(61));
	s.syncArray(_sound, 32, Common::Serializer::Uint16LE, VER(62));

	// Actor animVariable grew from 8 to 27
	s.syncArray(_animVariable, 8, Common::Serializer::Uint16LE, VER(8), VER(40));
	s.syncArray(_animVariable, 27, Common::Serializer::Uint16LE, VER(41));

	s.syncAsUint16LE(_targetFacing, VER(8));
	s.syncAsByte(_moving, VER(8));
	s.syncAsByte(_ignoreBoxes, VER(8));
	s.syncAsByte(_forceClip, VER(8));
	s.syncAsByte(_initFrame, VER(8));
	s.syncAsByte(_walkFrame, VER(8));
	s.syncAsByte(_standFrame, VER(8));
	s.syncAsByte(_talkStartFrame, VER(8));
	s.syncAsByte(_talkStopFrame, VER(8));
	s.syncAsUint16LE(_speedx, VER(8));
	s.syncAsUint16LE(_speedy, VER(8));
	s.syncAsUint16LE(_cost.animCounter, VER(8));
	s.syncAsByte(_cost.soundCounter, VER(8));
	s.syncAsByte(_drawToBackBuf, VER(32));
	s.syncAsByte(_flip, VER(32));
	s.syncAsByte(_heSkipLimbs, VER(32));

	// Actor palette grew from 64 to 256 bytes and switched to uint16 in HE games
	s.syncArray(_palette, 64, Common::Serializer::Byte, VER(8), VER(9));
	s.syncArray(_palette, 256, Common::Serializer::Byte, VER(10), VER(79));
	s.syncArray(_palette, 256, Common::Serializer::Uint16LE, VER(80));

	s.skip(1, VER(8), VER(9)); // _mask
	s.syncAsByte(_shadowMode, VER(8));
	s.syncAsByte(_visible, VER(8));
	s.syncAsByte(_frame, VER(8));
	s.syncAsByte(_animSpeed, VER(8));
	s.syncAsByte(_animProgress, VER(8));
	s.syncAsByte(_walkbox, VER(8));
	s.syncAsByte(_needRedraw, VER(8));
	s.syncAsByte(_needBgReset, VER(8));
	s.syncAsByte(_costumeNeedsInit, VER(8));
	s.syncAsUint32LE(_heCondMask, VER(38));
	s.syncAsUint32LE(_hePaletteNum, VER(59));
	s.syncAsUint32LE(_heXmapNum, VER(59));

	s.syncAsSint16LE(_talkPosY, VER(8));
	s.syncAsSint16LE(_talkPosX, VER(8));
	s.syncAsByte(_ignoreTurns, VER(8));

	// Actor layer switched to int32 in HE games
	s.syncAsByte(_layer, VER(8), VER(57));
	s.syncAsSint32LE(_layer, VER(58));

	s.syncAsUint16LE(_talkScript, VER(8));
	s.syncAsUint16LE(_walkScript, VER(8));

	s.syncAsSint16LE(_walkdata.dest.x, VER(8));
	s.syncAsSint16LE(_walkdata.dest.y, VER(8));
	s.syncAsByte(_walkdata.destbox, VER(8));
	s.syncAsUint16LE(_walkdata.destdir, VER(8));
	s.syncAsByte(_walkdata.curbox, VER(8));
	s.syncAsSint16LE(_walkdata.cur.x, VER(8));
	s.syncAsSint16LE(_walkdata.cur.y, VER(8));
	s.syncAsSint16LE(_walkdata.next.x, VER(8));
	s.syncAsSint16LE(_walkdata.next.y, VER(8));
	s.syncAsSint32LE(_walkdata.deltaXFactor, VER(8));
	s.syncAsSint32LE(_walkdata.deltaYFactor, VER(8));
	s.syncAsUint16LE(_walkdata.xfrac, VER(8));
	s.syncAsUint16LE(_walkdata.yfrac, VER(8));

	s.syncAsUint16LE(_walkdata.point3.x, VER(42));
	s.syncAsUint16LE(_walkdata.point3.y, VER(42));

	s.syncBytes(_cost.active, 16, VER(8));
	s.syncAsUint16LE(_cost.stopped, VER(8));
	s.syncArray(_cost.curpos, 16, Common::Serializer::Uint16LE, VER(8));
	s.syncArray(_cost.start, 16, Common::Serializer::Uint16LE, VER(8));
	s.syncArray(_cost.end, 16, Common::Serializer::Uint16LE, VER(8));
	s.syncArray(_cost.frame, 16, Common::Serializer::Uint16LE, VER(8));

	s.syncArray(_cost.heJumpOffsetTable, 16, Common::Serializer::Uint16LE, VER(65));
	s.syncArray(_cost.heJumpCountTable, 16, Common::Serializer::Uint16LE, VER(65));
	s.syncArray(_cost.heCondMaskTable, 16, Common::Serializer::Uint32LE, VER(65));

	if (s.isLoading() && _vm->_game.version <= 2 && s.getVersion() < VER(70)) {
		_pos.x >>= V12_X_SHIFT;
		_pos.y >>= V12_Y_SHIFT;

		_speedx >>= V12_X_SHIFT;
		_speedy >>= V12_Y_SHIFT;
		_elevation >>= V12_Y_SHIFT;

		if (_walkdata.dest.x != -1) {
			_walkdata.dest.x >>= V12_X_SHIFT;
			_walkdata.dest.y >>= V12_Y_SHIFT;
		}

		_walkdata.cur.x >>= V12_X_SHIFT;
		_walkdata.cur.y >>= V12_Y_SHIFT;

		_walkdata.next.x >>= V12_X_SHIFT;
		_walkdata.next.y >>= V12_Y_SHIFT;

		if (_walkdata.point3.x != 32000) {
			_walkdata.point3.x >>= V12_X_SHIFT;
			_walkdata.point3.y >>= V12_Y_SHIFT;
		}

		setDirection(_facing);
	}
}

} // End of namespace Scumm