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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 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 "lastexpress/menu/trainline.h"
+
+#include "lastexpress/data/sequence.h"
+
+#include "lastexpress/game/scenes.h"
+
+#include "lastexpress/helpers.h"
+#include "lastexpress/lastexpress.h"
+#include "lastexpress/resource.h"
+
+namespace LastExpress {
+
+// Information about the cities on the train line
+static const struct {
+ uint8 frame;
+ TimeValue time;
+} _trainCities[31] = {
+ {0, kTimeCityParis},
+ {9, kTimeCityEpernay},
+ {11, kTimeCityChalons},
+ {16, kTimeCityBarLeDuc},
+ {21, kTimeCityNancy},
+ {25, kTimeCityLuneville},
+ {35, kTimeCityAvricourt},
+ {37, kTimeCityDeutschAvricourt},
+ {40, kTimeCityStrasbourg},
+ {53, kTimeCityBadenOos},
+ {56, kTimeCityKarlsruhe},
+ {60, kTimeCityStuttgart},
+ {63, kTimeCityGeislingen},
+ {66, kTimeCityUlm},
+ {68, kTimeCityAugsburg},
+ {73, kTimeCityMunich},
+ {84, kTimeCitySalzbourg},
+ {89, kTimeCityAttnangPuchheim},
+ {97, kTimeCityWels},
+ {100, kTimeCityLinz},
+ {104, kTimeCityAmstetten},
+ {111, kTimeCityVienna},
+ {120, kTimeCityPoszony},
+ {124, kTimeCityGalanta},
+ {132, kTimeCityBudapest},
+ {148, kTimeCityBelgrade},
+ /* Line 1 ends at 150 - line 2 begins at 0 */
+ {157, kTimeCityNish},
+ {165, kTimeCityTzaribrod},
+ {174, kTimeCitySofia},
+ {198, kTimeCityAdrianople},
+ {210, kTimeCityConstantinople}
+};
+
+TrainLine::TrainLine(LastExpressEngine *engine) : _engine(engine), _frameLine1(NULL), _frameLine2(NULL) {
+ _frameLine1 = new SequenceFrame(loadSequence("line1.seq"), 0, true);
+ _frameLine2 = new SequenceFrame(loadSequence("line2.seq"), 0, true);
+}
+
+TrainLine::~TrainLine() {
+ SAFE_DELETE(_frameLine1);
+ SAFE_DELETE(_frameLine2);
+
+ // Zero passed pointers
+ _engine = NULL;
+}
+
+void TrainLine::clear() {
+ getScenes()->removeFromQueue(_frameLine1);
+ getScenes()->removeFromQueue(_frameLine2);
+}
+
+// Draw the train line at the time
+// line1: 150 frames (=> Belgrade)
+// line2: 61 frames (=> Constantinople)
+void TrainLine::draw(uint32 time) {
+ assert(time >= kTimeCityParis && time <= kTimeCityConstantinople);
+
+ // Check that sequences have been loaded
+ if (!_frameLine1 || !_frameLine2)
+ error("[TrainLine::draw] Line sequences have not been loaded correctly");
+
+ // Clear existing frames
+ clear();
+
+ // Get the index of the last city the train has visited
+ uint index = 0;
+ for (uint i = 0; i < ARRAYSIZE(_trainCities); i++)
+ if ((uint32)_trainCities[i].time <= time)
+ index = i;
+
+ uint16 frame;
+ if (time > (uint32)_trainCities[index].time) {
+ // Interpolate linearly to use a frame between the cities
+ uint8 diffFrames = _trainCities[index + 1].frame - _trainCities[index].frame;
+ uint diffTimeCities = (uint)(_trainCities[index + 1].time - _trainCities[index].time);
+ uint traveledTime = (time - (uint)_trainCities[index].time);
+ frame = (uint16)(_trainCities[index].frame + (traveledTime * diffFrames) / diffTimeCities);
+ } else {
+ // Exactly on the city
+ frame = _trainCities[index].frame;
+ }
+
+ // Set frame, z-order and queue
+ if (frame < 150) {
+ _frameLine1->setFrame(frame);
+
+ _frameLine1->getInfo()->location = 1;
+ getScenes()->addToQueue(_frameLine1);
+ } else {
+ // We passed Belgrade
+ _frameLine1->setFrame(149);
+ _frameLine2->setFrame(frame - 150);
+
+ _frameLine1->getInfo()->location = 1;
+ _frameLine2->getInfo()->location = 1;
+
+ getScenes()->addToQueue(_frameLine1);
+ getScenes()->addToQueue(_frameLine2);
+ }
+}
+
+} // End of namespace LastExpress