void Kinematic::calcNewVelocities( const Steering& theSteering, float time, float maxSpeed, float maxRotationalVelocity )
{
mVelocity += theSteering.getLinear() * time;
mRotationVel += theSteering.getAngular() * time;
//cap the velocities
capVelocity( maxSpeed );
if( mRotationVel > maxRotationalVelocity )
{
mRotationVel = maxRotationalVelocity;
}
}
void KinematicUnit::update(float time)
{
Steering* steering;
if( mpCurrentSteering != NULL )
{
steering = mpCurrentSteering->getSteering();
}
else
{
steering = &gNullSteering;
}
if( steering->shouldApplyDirectly() )
{
//not stopped
if( getVelocity().getLengthSquared() > MIN_VELOCITY_TO_TURN_SQUARED )
{
setVelocity( steering->getLinear() );
setOrientation(steering->getAngular() );
//setNewOrientation();
}
//since we are applying the steering directly we don't want any rotational velocity
setRotationalVelocity( 0.0f );
steering->setAngular( 0.0f );
}
else
{
setNewOrientation(); //updates the orientation of most types
}
//move the unit using current velocities
Kinematic::update( time );
//calculate new velocities
calcNewVelocities( *steering, time, mMaxVelocity, 25.0f );
//move to oposite side of screen if we are off
GRAPHICS_SYSTEM->wrapCoordinates( mPosition );
//set the orientation to match the direction of travel
//setNewOrientation();
}
