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engines/illusions/bbdou/bbdou_bubble.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "illusions/bbdou/illusions_bbdou.h"
+#include "illusions/bbdou/bbdou_bubble.h"
+#include "illusions/actor.h"
+#include "illusions/camera.h"
+#include "illusions/dictionary.h"
+#include "illusions/input.h"
+
+namespace Illusions {
+
+BbdouBubble::BbdouBubble(IllusionsEngine_BBDOU *vm, BbdouSpecialCode *bbdou)
+	: _vm(vm), _bbdou(bbdou) {
+}
+
+BbdouBubble::~BbdouBubble() {
+}
+
+void BbdouBubble::init() {
+
+	static const uint32 kTrailObjectIds[] = {
+		0x0004003B, 0x0004003C, 0x0004003D, 0x0004003E,
+		0x0004003F, 0x00040040, 0x00040041, 0x00040042,
+		0x00040043, 0x00040044, 0x00040045, 0x00040046,
+		0x00040047, 0x00040048, 0x00040049, 0x0004004A,
+		0x0004004B, 0x0004004C, 0x0004004D, 0x0004004E,
+		0x0004004F, 0x00040050, 0x00040051, 0x00040052,
+		0x00040053, 0x00040054, 0x00040055, 0x00040056,
+		0x00040057, 0x00040058, 0x00040059, 0x0004005A
+	};
+
+	static const uint32 kIconObjectIds[] = {
+		0x0004001B, 0x0004001C, 0x0004001D, 0x0004001E,
+		0x0004001F, 0x00040020, 0x00040021, 0x00040022,
+		0x00040023, 0x00040024, 0x00040025, 0x00040026,
+		0x00040027, 0x00040028, 0x00040029, 0x0004002A,
+		0x0004002B, 0x0004002C, 0x0004002D, 0x0004002E,
+		0x0004002F, 0x00040030, 0x00040031, 0x00040032,
+		0x00040033, 0x00040034, 0x00040035, 0x00040036,
+		0x00040037, 0x00040038, 0x00040039, 0x0004003A
+	};
+
+	_bubbleObjectId1 = 0x4005B;
+	_bubbleObjectId2 = 0x4005C;
+
+	for (uint i = 0; i < 32; ++i) {
+		_trailObjectIds[i] = kTrailObjectIds[i];
+	}
+
+	for (uint i = 0; i < 32; ++i) {
+		_icons[i]._objectId = kIconObjectIds[i];
+		_icons[i]._enabled = false;
+		_icons[i]._position.x = 0;
+		_icons[i]._position.y = 0;
+		_icons[i]._sequenceId = 0;
+	}
+
+	_currBubbleStyle = nullptr;
+	_showingBubbleStyle = nullptr;
+	_hidingBubbleStyle = nullptr;
+	_sourcePt.x = 0;
+	_sourcePt.y = 0;
+	_destPt.x = 0;
+	_destPt.y = 0;
+
+}
+
+void BbdouBubble::addBubbleStyle(uint32 showSequenceId, uint32 hideSequenceId, uint32 progResKeywordId,
+	uint32 namedPointId, int16 count, uint32 *namedPointIds) {
+	BubbleStyle style;
+	style._showSequenceId = showSequenceId;
+	style._hideSequenceId = hideSequenceId;
+	style._progResKeywordId = progResKeywordId;
+	style._baseNamedPointId = namedPointId;
+	style._count = count;
+	for (int16 i = 0; i < count; ++i) {
+		style._namedPointIds[i] = FROM_LE_32(namedPointIds[i]);
+	}
+	style._objectId = 0;
+	style._position.x = 0;
+	style._position.y = 0;
+	_bubbleStyles.push_back(style);
+}
+
+void BbdouBubble::show() {
+
+	if (_showingBubbleStyle) {
+		hide();
+	}
+
+	_showingBubbleStyle = _currBubbleStyle;
+	_currBubbleStyle = nullptr;
+
+	calcBubbleTrail(_sourcePt, _destPt);
+
+	Control *bubbleControl = _vm->_dict->getObjectControl(_showingBubbleStyle->_objectId);
+	bubbleControl->setActorPosition(_destPt);
+	bubbleControl->startSequenceActor(0x60057, 2, 0);
+	bubbleControl->startSequenceActor(_showingBubbleStyle->_showSequenceId, 2, 0);
+	bubbleControl->appearActor();
+	bubbleControl->deactivateObject();
+
+	for (uint i = 0; i < 32; ++i) {
+		if (_icons[i]._enabled) {
+			Control *iconControl = _vm->_dict->getObjectControl(_icons[i]._objectId);
+			iconControl->setActorPosition(_icons[i]._position);
+			iconControl->startSequenceActor(_icons[i]._sequenceId, 2, 0);
+		}
+	}
+
+}
+
+void BbdouBubble::hide() {
+	_hidingBubbleStyle = _showingBubbleStyle;
+	_showingBubbleStyle = nullptr;
+	if (_hidingBubbleStyle) {
+		Control *bubbleControl = _vm->_dict->getObjectControl(_hidingBubbleStyle->_objectId);
+		bubbleControl->startSequenceActor(_hidingBubbleStyle->_hideSequenceId, 2, 0);
+		for (uint i = 0; i < 32; ++i) {
+			Control *trailControl = _vm->_dict->getObjectControl(_trailObjectIds[i]);
+			trailControl->stopActor();
+			trailControl->disappearActor();
+		}
+		for (uint i = 0; i < 32; ++i) {
+			Control *iconControl = _vm->_dict->getObjectControl(_icons[i]._objectId);
+			iconControl->stopActor();
+			iconControl->disappearActor();
+		}
+	}
+}
+
+void BbdouBubble::selectBubbleStyle(int16 minCount, Common::Point sourcePt, Common::Point destPt, uint32 progResKeywordId) {
+	for (uint i = 0; i < 32; ++i) {
+		_icons[i]._enabled = false;
+	}
+	int16 maxCount = 32;
+	for (uint i = 0; i < _bubbleStyles.size(); ++i) {
+		BubbleStyle *style = &_bubbleStyles[i];
+		if (style->_count < maxCount && style->_count >= minCount &&
+			(progResKeywordId == 0 || progResKeywordId == style->_progResKeywordId)) {
+			maxCount = style->_count;
+			_currBubbleStyle = style;
+		}
+	}
+	_sourcePt = sourcePt;
+	_destPt = destPt;
+	_currBubbleStyle->_position = destPt;
+	_currBubbleStyle->_objectId = _bubbleObjectId1;
+	if (_showingBubbleStyle && _showingBubbleStyle->_objectId == _currBubbleStyle->_objectId)
+		_currBubbleStyle->_objectId = _bubbleObjectId2;
+}
+
+uint32 BbdouBubble::addBubbleIcon(uint positionIndex, uint32 sequenceId) {
+	for (uint i = 0; i < 32; ++i) {
+		BubbleIcon *icon = &_icons[i];
+		if (!icon->_enabled) {
+			Common::Point itemPos = _vm->getNamedPointPosition(_currBubbleStyle->_namedPointIds[positionIndex]);
+			Common::Point basePos = _vm->getNamedPointPosition(_currBubbleStyle->_baseNamedPointId);
+			icon->_enabled = true;
+			icon->_sequenceId = sequenceId;
+			icon->_position.x = itemPos.x + _currBubbleStyle->_position.x - basePos.x;
+			icon->_position.y = itemPos.y + _currBubbleStyle->_position.y - basePos.y;
+			return icon->_objectId;
+		}
+	}
+	return 0;
+}
+
+void BbdouBubble::calcBubbleTrail(Common::Point &sourcePt, Common::Point &destPt) {
+	const int kSequenceIdsCount = 10;
+	const float kDistanceBetweenPoints = 30.0;
+	static const uint32 kBubbleTrailSequenceIds[] = {
+		0x00060042, 0x00060043, 0x00060044, 0x00060045, 0x00060046,
+		0x00060047, 0x00060048, 0x00060049, 0x0006004A, 0x0006004B
+	};
+	static const int kIndexTbl[kSequenceIdsCount] = {4, 0, 8, 2, 6, 5, 1, 9, 3, 7};
+
+	int sequenceCounters[kSequenceIdsCount];
+	bool swapY;
+	int centerX, centerY;
+	float currentAngle, radius;
+
+	for (int i = 0; i < 32; ++i) {
+		Control *control = _vm->_dict->getObjectControl(_trailObjectIds[i]);
+		control->startSequenceActor(0x00060056, 2, 0);
+	}
+
+	for (int i = 0; i < kSequenceIdsCount; ++i) {
+		sequenceCounters[i] = 0;
+	}
+
+	if (destPt.y >= sourcePt.y) {
+		swapY = true;
+		if (sourcePt.x == destPt.x)
+			destPt.x = destPt.x + 20;
+	} else {
+		swapY = false;
+		if (sourcePt.y == destPt.y)
+			destPt.y = destPt.y + 20;
+	}
+
+	if (swapY) {
+		centerX = (destPt.x * destPt.x - (destPt.y - sourcePt.y) * (destPt.y - sourcePt.y) - sourcePt.x * sourcePt.x) / (2 * (destPt.x - sourcePt.x));
+		centerY = destPt.y;
+		radius = ABS(destPt.x - centerX);
+	} else {
+		centerX = destPt.x;
+		centerY = (destPt.y * destPt.y - (destPt.x - sourcePt.x) * (destPt.x - sourcePt.x) - sourcePt.y * sourcePt.y) / (2 * (destPt.y - sourcePt.y));
+		radius = ABS(destPt.y - centerY);
+	}
+
+	const float fullDistance = sqrt((destPt.y - sourcePt.y) * (destPt.y - sourcePt.y) + (destPt.x - sourcePt.x) * (destPt.x - sourcePt.x));
+	const float arcAngle = 2 * asin(CLIP(0.5 * fullDistance / radius, -1.0, 1.0));
+	const float arcLength = arcAngle * radius;
+	int pointsCount = (int)(arcLength / kDistanceBetweenPoints);
+	float partAngle = ABS(kDistanceBetweenPoints / radius);
+
+	for (int i = 0; i < pointsCount; ++i) {
+		++sequenceCounters[kIndexTbl[i % kSequenceIdsCount]];
+	}
+
+	if (!swapY) {
+		if (destPt.y < sourcePt.y) {
+			currentAngle = (float)M_PI * 0.5F;
+		} else {
+			currentAngle = (float)M_PI * 1.5F;
+			partAngle = -partAngle;
+		}
+		if (destPt.x < sourcePt.x)
+			partAngle = -partAngle;
+	} else {
+		if (destPt.x <= sourcePt.x) {
+			currentAngle = (float)M_PI;
+		} else {
+			currentAngle = 0.0;
+			partAngle = -partAngle;
+		}
+		if (destPt.y > sourcePt.y)
+			partAngle = -partAngle;
+	}
+
+	float angleStep = partAngle / (float)pointsCount * 0.5;
+	float angleIncr = (float)(pointsCount / 2) * angleStep + partAngle;
+
+	if (pointsCount > 32)
+		pointsCount = 32;
+
+	for (int i = 0; i < pointsCount; ++i) {
+
+		currentAngle += angleIncr;
+		angleIncr -= angleStep;
+
+		Common::Point newPoint(
+			centerX + _vm->getRandom(8) - 2 + (int)(cos(currentAngle) * radius),
+			centerY + _vm->getRandom(8) - 2 - (int)(sin(currentAngle) * radius));
+
+		Control *trailControl = _vm->_dict->getObjectControl(_trailObjectIds[i]);
+
+		for (int index = kSequenceIdsCount - 1; index >= 0; --index) {
+			if (sequenceCounters[index] > 0) {
+				--sequenceCounters[index];
+				trailControl->setActorPosition(newPoint);
+				trailControl->startSequenceActor(kBubbleTrailSequenceIds[index], 2, 0);
+				trailControl->appearActor();
+				trailControl->deactivateObject();
+				break;
+			}
+		}
+
+	}
+
+}
+
+} // End of namespace Illusions