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flightgear/JSBsim/FGTank.cpp

88 lines
2.8 KiB
C++

/*******************************************************************************
Module: FGTank.cpp
Author: Jon Berndt
Date started: 01/21/99
Called by: FGAircraft
------------- Copyright (C) 1999 Jon S. Berndt (jsb@hal-pc.org) -------------
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., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA.
Further information about the GNU General Public License can also be found on
the world wide web at http://www.gnu.org.
FUNCTIONAL DESCRIPTION
--------------------------------------------------------------------------------
See header file.
HISTORY
--------------------------------------------------------------------------------
01/21/99 JSB Created
********************************************************************************
INCLUDES
*******************************************************************************/
#include "FGTank.h"
#include <fstream.h>
#include <string.h>
/*******************************************************************************
************************************ CODE **************************************
*******************************************************************************/
FGTank::FGTank(ifstream& acfile)
{
char type[20];
acfile >> type; // Type = 0: rocket, 1: piston
if (strstr(type,"FUEL")) Type = 0;
else if (strstr(type,"OXIDIZER")) Type = 1;
else Type = -1;
acfile >> X; // inches
acfile >> Y; // "
acfile >> Z; // "
acfile >> Radius; // "
acfile >> Capacity; // pounds (amount it can hold)
acfile >> Contents; // pounds (amount it is holding)
Selected = true;
PctFull = 100.0*Contents/Capacity; // percent full; 0 to 100.0
}
FGTank::~FGTank(void)
{
}
float FGTank::Reduce(float used)
{
float shortage;
if (used < Contents) {
Contents -= used;
PctFull = 100.0*Contents/Capacity;
return Contents;
} else {
shortage = Contents - used;
Contents = 0.0;
PctFull = 0.0;
Selected = false;
return shortage;
}
}