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Diffstat (limited to 'engines/pegasus/items/inventory/airmask.cpp')
| -rwxr-xr-x | engines/pegasus/items/inventory/airmask.cpp | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/engines/pegasus/items/inventory/airmask.cpp b/engines/pegasus/items/inventory/airmask.cpp new file mode 100755 index 0000000000..682927deaf --- /dev/null +++ b/engines/pegasus/items/inventory/airmask.cpp @@ -0,0 +1,248 @@ +/* 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/gamestate.h" +#include "pegasus/ai/ai_area.h" +#include "pegasus/items/inventory/airmask.h" +#include "pegasus/neighborhood/neighborhood.h" + +namespace Pegasus { + +AirMask *g_airMask = 0; + +// Based on full == 100, which is scale used by GetAirLeft(). +static const TimeValue kOxygenLowThreshold = 25; + +void AirMask::airMaskTimerExpired(FunctionPtr *, void *) { + if (g_neighborhood) + g_neighborhood->checkAirMask(); +} + +AirMask::AirMask(const tItemID id, const tNeighborhoodID neighborhood, const tRoomID room, const tDirectionConstant direction) : + InventoryItem(id, neighborhood, room, direction), _toggleSpot(kAirMaskToggleSpotID) { + g_airMask = this; + _toggleSpot.setArea(Common::Rect(kAIMiddleAreaLeft + 10, kAIMiddleAreaTop + 17, kAIMiddleAreaLeft + 110, kAIMiddleAreaTop + 57)); + _toggleSpot.setHotspotFlags(kAirMaskSpotFlag); + g_allHotspots.push_back(&_toggleSpot); + setItemState(kAirMaskEmptyOff); + _oxygenTimer.primeFuse(0); + _oxygenTimer.setFunctionPtr(&airMaskTimerExpired, 0); +} + +AirMask::~AirMask() { + g_allHotspots.removeOneHotspot(kAirMaskToggleSpotID); + g_airMask = 0; +} + +void AirMask::writeToStream(Common::WriteStream *stream) { + InventoryItem::writeToStream(stream); + stream->writeUint32BE(_oxygenTimer.getTimeRemaining()); +} + +void AirMask::readFromStream(Common::ReadStream *stream) { + _oxygenTimer.stopFuse(); + InventoryItem::readFromStream(stream); + _oxygenTimer.primeFuse(stream->readUint32BE()); +} + +void AirMask::putMaskOn() { + tAirQuality airQuality; + + if (g_neighborhood) + airQuality = g_neighborhood->getAirQuality(GameState.getCurrentRoom()); + else + airQuality = kAirQualityGood; + + uint airLevel = getAirLeft(); + tItemState newState = getItemState(); + tItemState oldState = newState; + + if (airLevel == 0) { + newState = kAirMaskEmptyFilter; + } else if (airLevel <= kOxygenLowThreshold) { + if (airQuality == kAirQualityVacuum) + newState = kAirMaskLowOn; + else + newState = kAirMaskLowFilter; + } else { + if (airQuality == kAirQualityVacuum) + newState = kAirMaskFullOn; + else + newState = kAirMaskFullFilter; + } + + if (newState != oldState) + setItemState(newState); +} + +void AirMask::takeMaskOff() { + uint airLevel = getAirLeft(); + tItemState newState = getItemState(); + tItemState oldState = newState; + + if (airLevel == 0) + newState = kAirMaskEmptyOff; + else if (airLevel <= kOxygenLowThreshold) + newState = kAirMaskLowOff; + else + newState = kAirMaskFullOff; + + if (newState != oldState) + setItemState(newState); +} + +void AirMask::toggleItemState() { + if (isAirMaskInUse()) + takeMaskOff(); + else + putMaskOn(); +} + +void AirMask::airQualityChanged() { + if (isAirMaskInUse()) + putMaskOn(); + else + takeMaskOff(); +} + +void AirMask::setItemState(const tItemState newState) { + if (newState != getItemState()) { + InventoryItem::setItemState(newState); + + switch (newState) { + case kAirMaskFullOn: + case kAirMaskLowOn: + if (!_oxygenTimer.isFuseLit()) { + _oxygenTimer.lightFuse(); + startIdling(); + } + break; + default: + if (_oxygenTimer.isFuseLit()) { + _oxygenTimer.stopFuse(); + stopIdling(); + } + break; + } + + if (g_neighborhood) + g_neighborhood->checkAirMask(); + + g_AIArea->checkMiddleArea(); + } +} + +void AirMask::useIdleTime() { + if (getAirLeft() == 0) + setItemState(kAirMaskEmptyOff); + else if (getAirLeft() <= kOxygenLowThreshold) + setItemState(kAirMaskLowOn); +} + +void AirMask::refillAirMask() { + switch (getItemState()) { + case kAirMaskEmptyOff: + case kAirMaskLowOff: + setItemState(kAirMaskFullOff); + break; + case kAirMaskEmptyFilter: + case kAirMaskLowFilter: + setItemState(kAirMaskFullFilter); + break; + case kAirMaskLowOn: + setItemState(kAirMaskFullOn); + break; + } + + if (_oxygenTimer.isFuseLit()) { + _oxygenTimer.stopFuse(); + _oxygenTimer.primeFuse(kOxyMaskFullTime); + _oxygenTimer.lightFuse(); + } else { + _oxygenTimer.primeFuse(kOxyMaskFullTime); + } +} + +// Doesn't return 0 until the timer is actually at 0. +uint AirMask::getAirLeft() { + return CLIP<int>(((_oxygenTimer.getTimeRemaining() * 100) + kOxyMaskFullTime - 1) / kOxyMaskFullTime, 0, 100); +} + +bool AirMask::isAirMaskInUse() { + switch (getItemState()) { + case kAirMaskEmptyOff: + case kAirMaskLowOff: + case kAirMaskFullOff: + return false; + break; + default: + return true; + break; + } +} + +bool AirMask::isAirMaskOn() { + switch (getItemState()) { + case kAirMaskLowOn: + case kAirMaskFullOn: + return true; + break; + default: + return false; + break; + } +} + +bool AirMask::isAirFilterOn() { + switch (getItemState()) { + case kAirMaskEmptyFilter: + case kAirMaskLowFilter: + case kAirMaskFullFilter: + return true; + break; + default: + return false; + break; + } +} + +void AirMask::addedToInventory() { + GameState.setMarsMaskOnFiller(false); +} + +void AirMask::removedFromInventory() { + if (isAirMaskInUse()) + toggleItemState(); +} + +void AirMask::activateAirMaskHotspots() { + _toggleSpot.setActive(); +} + +void AirMask::clickInAirMaskHotspot() { + toggleItemState(); +} + +} // End of namespace Pegasus |