ilikecats/stk-code_catmod
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Added lost improvement: make sure that both wheels

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of an axis are touching the ground if at least
one wheel touches it (if only one wheel touches
the ground, the kart will get a strong angular
impulse and turn rapidly).


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/physics@10251 178a84e3-b1eb-0310-8ba1-8eac791a3b58
This commit is contained in:
hikerstk
2011-11-24 10:20:12 +00:00
parent fd1871be6e
commit 78505d2a8b
1 changed files with 24 additions and 0 deletions
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24
src/physics/btKart.cpp
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@@ -326,6 +326,30 @@ void btKart::updateVehicle( btScalar step )
if(m_wheelInfo[i].m_raycastInfo.m_isInContact)
m_num_wheels_on_ground++;
}
// Work around: make sure that either both wheels on one axis
// are on ground, or none of them. This avoids the problem of
// the kart suddenly getting additional angular velocity because
// e.g. only one rear wheel is on the ground.
for(i=0; i<m_wheelInfo.size(); i+=2)
{
if( m_wheelInfo[i ].m_raycastInfo.m_isInContact !=
m_wheelInfo[i+1].m_raycastInfo.m_isInContact)
{
int wheel_air_index = i;
int wheel_ground_index = i+1;
if (m_wheelInfo[i].m_raycastInfo.m_isInContact)
{
wheel_air_index = i+1;
wheel_ground_index = i;
}
btWheelInfo& wheel_air = m_wheelInfo[wheel_air_index];
btWheelInfo& wheel_ground = m_wheelInfo[wheel_ground_index];
wheel_air.m_raycastInfo = wheel_ground.m_raycastInfo;
}
} // for i=0; i<m_wheelInfo.size(); i+=2
updateSuspension(step);