Initial commit

engines/mutationofjb/tasks/objectanimationtask.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 "mutationofjb/tasks/objectanimationtask.h"
+
+#include "mutationofjb/tasks/taskmanager.h"
+#include "mutationofjb/game.h"
+#include "mutationofjb/gamedata.h"
+#include "mutationofjb/room.h"
+
+namespace MutationOfJB {
+
+static const int TICK_MILLIS = 100;
+
+// TODO: Respect currentScene._delay.
+ObjectAnimationTask::ObjectAnimationTask() : _timer(TICK_MILLIS) {
+}
+
+void ObjectAnimationTask::start() {
+	setState(RUNNING);
+	_timer.start();
+}
+
+void ObjectAnimationTask::update() {
+	_timer.update();
+	if (_timer.isFinished()) {
+		_timer.start();
+		updateObjects();
+	}
+}
+
+void ObjectAnimationTask::updateObjects() {
+	Scene *const scene = getTaskManager()->getGame().getGameData().getCurrentScene();
+	if (!scene) {
+		return;
+	}
+
+	for (uint8 i = 1; i <= scene->getNoObjects(); ++i) {
+		Object *const object = scene->getObject(i);
+		// Skip if object animation not active.
+		if (!object->_active)
+			continue;
+
+		// Number of frames must be higher than 1.
+		if (object->_numFrames <= 1)
+			continue;
+
+		const uint8 currentAnimOffset = object->_currentFrame - object->_firstFrame;
+
+		const bool randomized = object->_randomFrame != 0;
+		const bool belowRandomFrame = currentAnimOffset < (object->_randomFrame - 1);
+
+		uint8 maxAnimOffset = object->_numFrames - 1;
+		if (randomized && belowRandomFrame) {
+			maxAnimOffset = object->_randomFrame - 2;
+		}
+
+		uint8 nextAnimationOffset = currentAnimOffset + 1;
+		if (currentAnimOffset == maxAnimOffset) {
+			if (randomized && object->_jumpChance != 0 && getTaskManager()->getGame().getRandomSource().getRandomNumber(object->_jumpChance) == 0)
+				nextAnimationOffset = object->_randomFrame - 1;
+			else
+				nextAnimationOffset = 0;
+		}
+
+		object->_currentFrame = nextAnimationOffset + object->_firstFrame;
+
+		const bool drawObject = handleHardcodedAnimation(object);
+		if (drawObject) {
+			getTaskManager()->getGame().getRoom().drawObject(i);
+		}
+	}
+}
+
+bool ObjectAnimationTask::handleHardcodedAnimation(Object *const object) {
+	GameData &gameData = getTaskManager()->getGame().getGameData();
+	Scene *const scene = gameData.getCurrentScene();
+
+	const bool carnivalScene = gameData._currentScene == 30 && !gameData._partB;
+	const bool tavernScene = gameData._currentScene == 8 && gameData._partB;
+
+	if (carnivalScene) {
+		// This alternates between the two burglars' talking animations.
+		// Each burglar gets to talk for a varying amount of time since
+		// the switch occurs when his random frame is reached.
+		if (object->_WX == 1 && object->_currentFrame == 79) {
+			object->_currentFrame = 68;
+			object->_active = 0;
+			scene->getObject(6)->_active = 1;
+			scene->getObject(7)->_active = 0;
+			scene->getObject(8)->_active = 1;
+			return false;
+		} else if (object->_WX == 2 && object->_currentFrame == 91) {
+			object->_currentFrame = 80;
+			object->_active = 0;
+			scene->getObject(5)->_active = 1;
+			scene->getObject(7)->_active = 1;
+			scene->getObject(8)->_active = 0;
+			return false;
+		}
+
+		// The following makes sure you can't interact with the glass
+		// while the scientist is drinking from it.
+		if (scene->getObject(4)->_currentFrame > 52 && scene->getObject(4)->_active) {
+			scene->getStatic(9)->_active = 0; // disable scientist's glass
+		} else {
+			scene->getStatic(9)->_active = 1; // enable scientist's glass
+		}
+
+		if (!scene->getObject(4)->_active) {
+			scene->getStatic(9)->_active = 0; // disable scientist's glass
+		}
+	} else if (tavernScene) {
+		// Similarly to the carnival burglars, this alternates between
+		// the talking animations of the two soldiers in the tavern.
+		//
+		// At some point the script disables their conversation
+		// by nulling their _WX registers.
+		if (object->_WX == 3 && object->_currentFrame == 46) {
+			object->_currentFrame = 30;
+			object->_active = 0;
+			scene->getObject(3)->_active = 1;
+			return false;
+		} else if (object->_WX == 4 && object->_currentFrame == 63) {
+			object->_currentFrame = 47;
+			object->_active = 0;
+			scene->getObject(2)->_active = 1;
+			return false;
+		}
+	}
+
+	return true;
+}
+
+}