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engines/pegasus/chase.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.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-2013 Presto Studios, Inc.
+ *
+ * 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 "pegasus/chase.h"
+
+namespace Pegasus {
+
+// Notification constants.
+
+static const NotificationFlags kChaseNotificationFlags = kChaseEnteredBranchZone |
+															kChaseExitedBranchZone |
+															kChaseFinished;
+
+ChaseInteraction::ChaseInteraction(const InteractionID interactionID, Neighborhood *handler,
+	const NotificationID notificationID, NotificationManager *manager) : GameInteraction(interactionID, handler),
+	_chaseNotification(notificationID, manager), _steerPict(kNoDisplayElement), _directionNeeded(false),
+	_turnDirection(kNoTurn) {
+
+	// HACK HACK HACK HACK HACK
+	// TRIPLE SUPER ULTRA HACK
+	// This avoids a nasty optimization bug I have been unable to track down
+	// after days and days of searching. Let's just ship the game already.
+	setNextHandler(nullptr);
+
+	_neighborhoodNotification = handler->getNeighborhoodNotification();
+}
+
+void ChaseInteraction::openInteraction() {
+	_steerPict.initFromPICTFile("Images/Interface/steer.pict", true);
+
+	_chaseNotification.notifyMe(this, kChaseNotificationFlags, kChaseNotificationFlags);
+
+	_neighborhoodNotification->notifyMe(this, kDelayCompletedFlag | kSpotSoundCompletedFlag,
+										kDelayCompletedFlag | kSpotSoundCompletedFlag);
+}
+
+void ChaseInteraction::closeInteraction() {
+	_steerPict.hide();
+	_steerPict.deallocateSurface();
+
+	_chaseNotification.cancelNotification(this);
+
+	_neighborhoodNotification->cancelNotification(this);
+}
+
+void ChaseInteraction::receiveNotification(Notification *notification, const NotificationFlags flags) {
+	if (notification == &_chaseNotification)
+		switch (flags) {
+		case kChaseEnteredBranchZone:
+			_directionNeeded = true;
+			showControlsHint();
+			setUpBranch();
+			break;
+		case kChaseExitedBranchZone:
+			switch (_turnDirection) {
+			case kTurnLeft:
+				branchLeft();
+				break;
+			case kTurnRight:
+				branchRight();
+				break;
+			case kNoTurn:
+				dontBranch();
+				break;
+			default:
+				break;
+			}
+			hideControlsHint();
+			_turnDirection = kNoTurn;
+			_directionNeeded = false;
+			break;
+		case kChaseFinished:
+			_owner->requestDeleteCurrentInteraction();
+			break;
+		default:
+			break;
+		}
+}
+
+void ChaseInteraction::handleInput(const Input &input, const Hotspot *cursorSpot) {
+	if (input.anyDirectionInput()) {
+		if (_directionNeeded) {
+			if (input.leftButtonAnyDown())
+				_turnDirection = kTurnLeft;
+			else if (input.rightButtonAnyDown())
+				_turnDirection = kTurnRight;
+		}
+	} else {
+		this->InputHandler::handleInput(input, cursorSpot);
+	}
+}
+
+void ChaseInteraction::showControlsHint() {
+	_steerPict.show();
+}
+
+void ChaseInteraction::hideControlsHint() {
+	_steerPict.hide();
+}
+
+} // End of namespace Pegasus