void Number::UpdateCollision()
{
GameEngine::getInstance()->AddToCollisionQuadtree(&mySprite);
Colliding( GameEngine::getInstance()->DetectCollision(&mySprite,"Minus.PNG")
, GameEngine::getInstance()->DetectCollision(&mySprite,"Plus.PNG" ) );
myWeapon->UpdateCollision();
}
void Enemy::UpdateCollision()
{
if( myAI != DEAD )
{
GameEngine::getInstance()->AddToCollisionQuadtree(&mySprite);
if( isX )
Colliding( GameEngine::getInstance()->DetectCollision(&mySprite,"Derivative.PNG")
, GameEngine::getInstance()->DetectCollision(&mySprite,"Integral.PNG" ) );
else
Colliding( GameEngine::getInstance()->DetectCollision(&mySprite,"Minus.PNG")
, GameEngine::getInstance()->DetectCollision(&mySprite,"Plus.PNG" ) );
TypeSwichColliding();
}
myWeapon->UpdateCollision();
}
//-------------------------------------------------------------------------------
// @ SimObject::HandleCollision()
//-------------------------------------------------------------------------------
// Handle collisions between this object and another one
//-------------------------------------------------------------------------------
void
SimObject::HandleCollision( SimObject* other )
{
IvVector3 collisionNormal, collisionPoint;
float penetration;
// if the two objects are colliding
if (Colliding(other, collisionNormal, collisionPoint, penetration))
{
// push out by penetration, scaled by relative masses
float relativeMass = mMass/(mMass + other->mMass);
mTranslate -= (1.0f-relativeMass)*penetration*collisionNormal;
other->mTranslate += relativeMass*penetration*collisionNormal;
// compute relative velocity
IvVector3 r1 = collisionPoint - mTranslate;
IvVector3 r2 = collisionPoint - other->mTranslate;
IvVector3 vel1 = mVelocity + Cross( mAngularVelocity, r1 );
IvVector3 vel2 = other->mVelocity + Cross( other->mAngularVelocity, r2 );
IvVector3 relativeVelocity = vel1 - vel2;
// determine if we're heading away from each other
float vDotN = relativeVelocity.Dot( collisionNormal );
if (vDotN < 0)
return;
// compute impulse factor
float denominator = (1.0f/mMass + 1.0f/other->mMass)*(collisionNormal.Dot(collisionNormal));
// compute angular factors
IvVector3 cross1 = Cross(r1, collisionNormal);
IvVector3 cross2 = Cross(r2, collisionNormal);
cross1 = mWorldMomentsInverse*cross1;
cross2 = other->mWorldMomentsInverse*cross2;
IvVector3 sum = Cross(cross1, r1) + Cross(cross2, r2);
denominator += (sum.Dot(collisionNormal));
// compute j
float modifiedVel = vDotN/denominator;
float j1 = -(1.0f+mElasticity)*modifiedVel;
float j2 = (1.0f+mElasticity)*modifiedVel;
// update velocities
mVelocity += j1/mMass*collisionNormal;
other->mVelocity += j2/other->mMass*collisionNormal;
// update angular velocities
mAngularMomentum += Cross(r1, j1*collisionNormal);
mAngularVelocity = mWorldMomentsInverse*mAngularMomentum;
other->mAngularMomentum += Cross(r2, j2*collisionNormal);
other->mAngularVelocity = other->mWorldMomentsInverse*other->mAngularMomentum;
}
} // End of SimObject::HandleCollision()
