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Friday the 13th JSBSim update ... :-0 !!!
[flightgear.git] / src / FDM / JSBSim / FGTank.cpp
1 /*******************************************************************************
2
3  Module:       FGTank.cpp
4  Author:       Jon Berndt
5  Date started: 01/21/99
6  Called by:    FGAircraft
7
8  ------------- Copyright (C) 1999  Jon S. Berndt (jsb@hal-pc.org) -------------
9
10  This program is free software; you can redistribute it and/or modify it under
11  the terms of the GNU General Public License as published by the Free Software
12  Foundation; either version 2 of the License, or (at your option) any later
13  version.
14
15  This program is distributed in the hope that it will be useful, but WITHOUT
16  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
18  details.
19
20  You should have received a copy of the GNU General Public License along with
21  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
22  Place - Suite 330, Boston, MA  02111-1307, USA.
23
24  Further information about the GNU General Public License can also be found on
25  the world wide web at http://www.gnu.org.
26
27 FUNCTIONAL DESCRIPTION
28 --------------------------------------------------------------------------------
29 See header file.
30
31 HISTORY
32 --------------------------------------------------------------------------------
33 01/21/99   JSB   Created
34
35 ********************************************************************************
36 INCLUDES
37 *******************************************************************************/
38
39 #include "FGTank.h"
40
41 static const char *IdSrc = "$Header$";
42 static const char *IdHdr = ID_TANK;
43
44 /*******************************************************************************
45 ************************************ CODE **************************************
46 *******************************************************************************/
47
48
49 FGTank::FGTank(FGConfigFile* AC_cfg)
50 {
51   string type;
52
53   *AC_cfg >> type;                              // Type = 0: fuel, 1: oxidizer
54
55   if (type == "FUEL") Type = ttFUEL;
56   else if (type == "OXIDIZER") Type = ttOXIDIZER;
57   else Type = ttUNKNOWN;
58   *AC_cfg >> X;                                 // inches
59   *AC_cfg >> Y;                                 // "
60   *AC_cfg >> Z;                                 // "
61   *AC_cfg >> Radius;                            // "
62   *AC_cfg >> Capacity;                          // pounds (amount it can hold)
63   *AC_cfg >> Contents;                          // pounds  (amount it is holding)
64   Selected = true;
65
66   if (Capacity != 0) {
67     PctFull = 100.0*Contents/Capacity;            // percent full; 0 to 100.0
68   } else {
69     Contents = 0;
70     PctFull  = 0;
71   }     
72 }
73
74
75 FGTank::~FGTank(void)
76 {
77 }
78
79
80 float FGTank::Reduce(float used)
81 {
82   float shortage;
83
84   if (used < Contents) {
85     Contents -= used;
86     PctFull = 100.0*Contents/Capacity;
87     return Contents;
88   } else {
89     shortage = Contents - used;
90     Contents = 0.0;
91     PctFull = 0.0;
92     Selected = false;
93     return shortage;
94   }
95 }
96