const SUCCESS StaticObject::checkCollision(PhysicalObject &object)
{
if(getCollider() == NULL || object.getCollider() == NULL)
{
return SUCCEEDED;
}
else
{
Radians angle;
if(getCollider()->canCollide(object.getCollider()->getType()))
if(getCollider()->collides(*object.getCollider(), &angle))
return collided(object, angle); // this ensures that object collider is called by this collided function, likewise a derived class needs to make sure its own derived collided function is called
else
return SUCCEEDED;
else if(object.getCollider()->canCollide(getCollider()->getType()))
if(object.getCollider()->collides(*getCollider(), &angle))
return collided(object, angle);
else
return SUCCEEDED;
else
return FAILED;
}
}
const SUCCESS PhysicalObject::collided(PhysicalObject &object, const Radians angle)
{
Vector initVec(getVelocity()-object.getVelocity());
Mag_t<double> initVel(initVec.mag());
Radians initTheta(initVec.theta());
if(fabs(getX(initVel, initTheta-angle)) < REST_THRESHOLD)
{
setVelocity(getVelocity()+initVec/2.0);
object.setVelocity(object.getVelocity()-initVec/2.0);
antigravitate(object);
object.antigravitate(*this);
return SUCCEEDED;
}
// Frame of reference with the object at rest with this approaching it with an angle of 0
Point<double> p2(Vector(Mag_t<double>(2.0*getMass()*getX(initVel, initTheta-angle)/(getMass()+object.getMass())), initTheta-angle)); // Gets the velocity of 2 based on elastic collision equation
Point<double> p1((initVel*getMass()-p2.x()*object.getMass())/getMass(), -p2.y()*object.getMass()/getMass()); // Gets the velocity of 1 based off of elastic collision rulez
if(fabs(p1.x()) < REST_THRESHOLD && fabs(p2.x()) < REST_THRESHOLD)
{
p1.x(0.0);
p2.x(0.0);
}
Vector v1(p1);
Vector v2(p2);
v1.theta(-v1.theta()+initTheta);
v2.theta(angle);
v1 += object.getVelocity();
v2 += object.getVelocity();
Point<double> dif(object.getPosition()-*position);
while(getCollider()->collides(*object.getCollider()))
acceleration.set(*position-dif/pythagoras<double>(dif));
setVelocity(v1);
object.setVelocity(v2);
return SUCCEEDED;
}
const SUCCESS StaticObject::collided(PhysicalObject &object, const Radians angle)
{
Vector v(object.getVelocity());
v.theta() -= angle;
Point<double> appliedMomentum(v);
if(fabs(appliedMomentum.x()) < REST_THRESHOLD)
{
appliedMomentum.x(0);
}
appliedMomentum.x() *= -1;
v = appliedMomentum;
v.theta() += angle;
object.setVelocity(v);
Point<double> dif(getPosition()-object.getPosition());
while(getCollider()->collides(*object.getCollider()))
object.setPosition(object.getPosition()-dif/pythagoras<double>(dif));
return SUCCEEDED;
}
