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+--- Thread: Problem with weight balance into all cars (/showthread.php?tid=142)
Problem with weight balance into all cars - gianni - 11-05-2005
Since two or three weeks I have a problem with weight balance of all cars. When I start a race the cars have front wheels on the air and when I brake rear wheels are on the air (Chris you have got some screenshots into bmwm3gtr.zip allegated file). It seems to drive on a seesaw. I have tried to delete all setting files, sources and I have made a svn checkout but nothing.You have mentioned some problems with platform Ubuntu and OpenSuSE, I have got a Fedora Core 4 with gcc 4.0Gianni
Problem with weight balance into all cars - joevenzon - 11-05-2005
This seems to be a problem that only appears with GCC 4. I'm baffled....
Problem with weight balance into all cars - dtmonterrey - 12-30-2005
I too have the same problem. Using Mandriva 2006, compiled using Scons. The binary distribution doesn't worked. VDrift version: 03-11-2005Hope theres a easy solution
- ladybirdman - 08-03-2006
hi, think this problem is due to some array index errors, patch to src/vamos/body/Car.cc, does this fix it?
Code:
Index: Car.cc
===================================================================
--- Car.cc (revision 1172)
+++ Car.cc (working copy)
@@ -1994,7 +1994,7 @@
retval = m_car_definition.GetParam("suspension-FR.hinge", tvec);
if (!retval)
success = false;
- t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[3] = tvec[3];
+ t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[2] = tvec[2];
//create front right suspension
Side side = RIGHT;
@@ -2014,7 +2014,7 @@
retval = m_car_definition.GetParam("suspension-FL.hinge", tvec);
if (!retval)
success = false;
- t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[3] = tvec[3];
+ t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[2] = tvec[2];
//create front left suspension
side = LEFT;
@@ -2068,7 +2068,7 @@
retval = m_car_definition.GetParam("suspension-RR.hinge", tvec);
if (!retval)
success = false;
- t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[3] = tvec[3];
+ t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[2] = tvec[2];
//create rear right suspension
side = RIGHT;
@@ -2088,7 +2088,7 @@
retval = m_car_definition.GetParam("suspension-RL.hinge", tvec);
if (!retval)
success = false;
- t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[3] = tvec[3];
+ t3v2.m_vec[0] = tvec[0]; t3v2.m_vec[1] = tvec[1]; t3v2.m_vec[2] = tvec[2];
//create rear left suspension
side = LEFT;- thelusiv - 08-03-2006
ladybirdman Wrote:hi, think this problem is due to some array index errors, patch to src/vamos/body/Car.cc, does this fix it?As far as I can tell, it does fix it! I compiled with this patch using gcc4. vdrift ran fine without any weird car bumping. Great find, ladybirdman! The patch is checked into SVN.
- joevenzon - 08-03-2006
Great catch! This also explains why I was having trouble moving the suspension hinge z coordinate around. I'll mess with the suspension hinges on one of the cars and see what it lets me do with the suspension geometries.
- joevenzon - 08-03-2006
Great catch! This also explains why I was having trouble moving the suspension hinge z coordinate around. I'll mess with the suspension hinges on one of the cars and see what it lets me do with the suspension geometries.
- matthew_i - 08-04-2006
This is awesome! So glad to hear this is fixed.
- matthew_i - 08-04-2006
This is awesome! So glad to hear this is fixed.