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minor bowling balls improvements

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git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@2207 178a84e3-b1eb-0310-8ba1-8eac791a3b58
This commit is contained in:
auria
2008-09-01 15:37:38 +00:00
parent b4fb3f8e57
commit 826bd6ef64
1 changed files with 25 additions and 25 deletions
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50
src/bowling.cpp
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@@ -74,7 +74,7 @@ void Bowling::init(const lisp::Lisp* lisp, ssgEntity *bowling)
void Bowling::update(float dt)
{
Flyable::update(dt);
const Kart *kart=0;
Kart *kart=0;
btVector3 direction;
float minDistance;
getClosestKart(&kart, &minDistance, &direction);
@@ -88,29 +88,29 @@ void Bowling::update(float dt)
m_body->applyCentralForce(direction);
}
}
else
{ // Bowling balls lose energy (e.g. when hitting the track), so increase
// the speed if the ball is too slow, but only if it's not too high (if
// the ball is too high, it is 'pushed down', which can reduce the
// speed, which causes the speed to increase, which in turn causes
// the ball to fly higher and higher.
btVector3 v=m_body->getLinearVelocity();
btTransform trans=getTrans();
float hat = trans.getOrigin().getZ();
if (hat<= m_max_height)
{
float vlen = v.length2();
if(vlen<0.8*m_speed*m_speed)
{ // bowling lost energy (less than 80%), i.e. it's too slow - speed it up:
if(vlen==0.0f) {
v = btVector3(.5f, .5f, 0.0f); // avoid 0 div.
}
else
{
m_body->setLinearVelocity(v*m_speed/sqrt(vlen));
}
} // vlen < 0.8*m_speed*m_speed
} // hat< m_max_height
} // spar lose energy
// Bowling balls lose energy (e.g. when hitting the track), so increase
// the speed if the ball is too slow, but only if it's not too high (if
// the ball is too high, it is 'pushed down', which can reduce the
// speed, which causes the speed to increase, which in turn causes
// the ball to fly higher and higher.
btVector3 v=m_body->getLinearVelocity();
btTransform trans=getTrans();
float hat = trans.getOrigin().getZ();
if (hat<= m_max_height)
{
float vlen = v.length2();
if(vlen<0.8*m_speed*m_speed)
{ // bowling lost energy (less than 80%), i.e. it's too slow - speed it up:
if(vlen==0.0f) {
v = btVector3(.5f, .5f, 0.0f); // avoid 0 div.
}
else
{
m_body->setLinearVelocity(v*m_speed/sqrt(vlen));
}
} // vlen < 0.8*m_speed*m_speed
} // hat< m_max_height
} // update
// -----------------------------------------------------------------------------