OK, if anyone wants to try it before I get home, the following 5-line
patch adds support for a settable "castering" attribute for gear
objects. Apply it to the YASim directory, and then replace the tail
wheel definition in dc3.xml with this:
<!-- Tail wheel; has castering selectable by a wheel lock -->
<gear x="-17.3" y="0" z="-1.5" compression="0.2">
<control-input axis="/controls/tailwheel-castering" control="CASTERING"/>
</gear>
Then bind a key to toggle it, and we're set. Hopefully I haven't
broken anything. I'll test it this evening.
Note that I chose the sense of the property ("-castering" instead of
"-locked") to make the default state (false) to mean "locked for
takeoff". Changing this to the inverse could be done via the src/dst
parameters to the control-input tag. This is a little messy, as they
were designed for floating point mappings and not booleans, but it
works:
<!-- Tail wheel; has castering selectable by a wheel lock -->
<gear x="-17.3" y="0" z="-1.5" compression="0.2">
<control-input axis="/controls/tailwheel-locked" control="CASTERING"
src0="0" src1="1" dst0="1" dst1="0"/>
</gear>
Andy
--
Andrew J. Ross NextBus Information Systems
Senior Software Engineer Emeryville, CA
[EMAIL PROTECTED] http://www.nextbus.com
"Men go crazy in conflagrations. They only get better one by one."
- Sting (misquoted)
Index: ControlMap.cpp
===================================================================
RCS file: /var/cvs/FlightGear-0.7/FlightGear/src/FDM/YASim/ControlMap.cpp,v
retrieving revision 1.8
diff -u -r1.8 ControlMap.cpp
--- ControlMap.cpp 10 May 2002 21:35:07 -0000 1.8
+++ ControlMap.cpp 22 May 2002 22:02:56 -0000
@@ -192,6 +192,7 @@
case BRAKE: ((Gear*)obj)->setBrake(lval); break;
case STEER: ((Gear*)obj)->setRotation(lval); break;
case EXTEND: ((Gear*)obj)->setExtension(lval); break;
+ case CASTERING:((Gear*)obj)->setCastering(lval != 0); break;
case SLAT: ((Wing*)obj)->setSlat(lval); break;
case FLAP0: ((Wing*)obj)->setFlap0(lval, rval); break;
case FLAP1: ((Wing*)obj)->setFlap1(lval, rval); break;
Index: ControlMap.hpp
===================================================================
RCS file: /var/cvs/FlightGear-0.7/FlightGear/src/FDM/YASim/ControlMap.hpp,v
retrieving revision 1.7
diff -u -r1.7 ControlMap.hpp
--- ControlMap.hpp 1 Mar 2002 05:47:28 -0000 1.7
+++ ControlMap.hpp 22 May 2002 22:02:56 -0000
@@ -13,7 +13,7 @@
ADVANCE, REHEAT, PROP,
BRAKE, STEER, EXTEND,
INCIDENCE, FLAP0, FLAP1, SLAT, SPOILER, VECTOR,
- BOOST };
+ BOOST, CASTERING };
enum { OPT_SPLIT = 0x01,
OPT_INVERT = 0x02,
Index: FGFDM.cpp
===================================================================
RCS file: /var/cvs/FlightGear-0.7/FlightGear/src/FDM/YASim/FGFDM.cpp,v
retrieving revision 1.10
diff -u -r1.10 FGFDM.cpp
--- FGFDM.cpp 21 May 2002 05:40:46 -0000 1.10
+++ FGFDM.cpp 22 May 2002 22:02:57 -0000
@@ -174,8 +174,6 @@
g->setBrake(attrf(a, "skid", 0));
g->setStaticFriction(attrf(a, "sfric", 0.8));
g->setDynamicFriction(attrf(a, "dfric", 0.7));
- if(a->hasAttribute("castering"))
- g->setCastering(true);
_airplane.addGear(g);
} else if(eq(name, "fuselage")) {
float b[3];
@@ -500,6 +498,7 @@
if(eq(name, "FLAP1")) return ControlMap::FLAP1;
if(eq(name, "SLAT")) return ControlMap::SLAT;
if(eq(name, "SPOILER")) return ControlMap::SPOILER;
+ if(eq(name, "CASTERING")) return ControlMap::CASTERING;
SG_LOG(SG_FLIGHT,SG_ALERT,"Unrecognized control type '"
<< name << "' in YASim aircraft description.");
exit(1);
