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engines/pegasus/neighborhood/mars/shuttleenergymeter.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) 1995-1997 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/neighborhood/mars/constants.h"
+#include "pegasus/neighborhood/mars/shuttleenergymeter.h"
+
+namespace Pegasus {
+
+ShuttleEnergyMeter::ShuttleEnergyMeter() : FaderAnimation(kNoDisplayElement) {
+	setBounds(kShuttleEnergyLeft, kShuttleEnergyTop, kShuttleEnergyLeft + kShuttleEnergyWidth,
+			kShuttleEnergyTop + kShuttleEnergyHeight);
+	setDisplayOrder(kShuttleStatusOrder);
+	setFaderValue(0);
+}
+
+void ShuttleEnergyMeter::initShuttleEnergyMeter() {
+	_meterImage.getImageFromPICTFile("Images/Mars/Shuttle Energy.pict");
+	_lowWarning.getImageFromPICTFile("Images/Mars/Shuttle Low Energy.pict");
+	startDisplaying();
+	show();
+}
+
+void ShuttleEnergyMeter::disposeShuttleEnergyMeter() {
+	stopFader();
+	hide();
+	stopDisplaying();
+	_meterImage.deallocateSurface();
+	_lowWarning.deallocateSurface();
+}
+
+void ShuttleEnergyMeter::draw(const Common::Rect &) {
+	int32 currentValue = getFaderValue();
+
+	Common::Rect r1, r2, bounds;
+	getBounds(bounds);
+
+	if (currentValue < kLowShuttleEnergy) {
+		_lowWarning.getSurfaceBounds(r1);
+		r2 = r1;
+		r2.moveTo(bounds.left, bounds.top);
+		_lowWarning.copyToCurrentPort(r1, r2);
+	}
+
+	_meterImage.getSurfaceBounds(r1);
+	r1.right = r1.left + r1.width() * currentValue / kFullShuttleEnergy;
+	r2 = r1;
+	r2.moveTo(bounds.left + 102, bounds.top + 6);
+	_meterImage.copyToCurrentPort(r1, r2);
+}
+
+void ShuttleEnergyMeter::powerUpMeter() {
+	FaderMoveSpec moveSpec;
+	moveSpec.makeTwoKnotFaderSpec(kThirtyTicksPerSecond, 0, 0, 45, kFullShuttleEnergy);
+	startFader(moveSpec);
+}
+
+void ShuttleEnergyMeter::setEnergyValue(const int32 value) {
+	stopFader();
+	FaderMoveSpec moveSpec;
+	moveSpec.makeTwoKnotFaderSpec(kFifteenTicksPerSecond, value * 3, value, kFullShuttleEnergy * 3, kFullShuttleEnergy);
+	startFader(moveSpec);
+}
+
+void ShuttleEnergyMeter::drainForTractorBeam() {
+	stopFader();
+	TimeValue startTime = 0, stopTime;
+	int32 startValue = getFaderValue(), stopValue;
+
+	if (startValue < kTractorBeamEnergy) {
+		stopTime = startValue * kTractorBeamTime / kTractorBeamEnergy;
+		stopValue = 0;
+	} else {
+		stopTime = kTractorBeamTime;
+		stopValue = startValue - kTractorBeamEnergy;
+	}
+
+	FaderMoveSpec moveSpec;
+	moveSpec.makeTwoKnotFaderSpec(kTractorBeamScale, startTime, startValue, stopTime, stopValue);
+	startFader(moveSpec);
+}
+
+int32 ShuttleEnergyMeter::getEnergyValue() const {
+	return getFaderValue();
+}
+
+void ShuttleEnergyMeter::dropEnergyValue(const int32 delta) {
+	setEnergyValue(getFaderValue() - delta);
+}
+
+bool ShuttleEnergyMeter::enoughEnergyForTractorBeam() const {
+	return getEnergyValue() >= kTractorBeamEnergy;
+}
+
+} // End of namespace Pegasus