scummvm/engines/pegasus/neighborhood/mars/shuttleenergymeter.cpp
Matthew Hoops 3f69c195ae PEGASUS: Allow for initial support of the space chase
It's not ready yet, but it's slowly becoming playable. For instance, scaling, the shuttle HUD, and the energy beam work on the first try which is nothing short of a miracle.

This commit also moved around some Mars constants because the previous include setup did not work; I hope to make the other neighborhoods have a separate constants file too.
2011-10-28 01:24:57 -04:00

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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 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 "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