Velocity operator+(const Velocity & lhs, const Velocity & rhs)
{
// not a member or friend, so we need to use getters and setters
Velocity sum;
sum.setDx(lhs.getDx() + rhs.getDx());
sum.setDy(lhs.getDy() + rhs.getDy());
return sum;
}
/*************************************************
* handles when objects hit each other
*************************************************/
float Velocity::minimumDistance(Velocity a, Velocity b)
{
float distanceSquared;
float minDist;
float slice = 1 / (max(max(a.getDx(), a.getDy() ),
max(b.getDx(), b.getDy()) ));
for (float percent = 0; percent <= 100; slice++)
{
float distaceSquared = ((a.getX() + a.getDx() * percent) - pow((b.getX() + b.getDx() * percent),2)) +
((a.getY() + a.getDy() * percent) - pow((b.getY() + b.getDy() * percent),2) );
float minDist = min(distanceSquared, minDist);
}
return sqrt(minDist);
}
/*************************************************
* subtracts velocity from superman
*************************************************/
Velocity Velocity::operator - (Velocity & v)
{
this->dy = this->dy - v.getDy();
this->dx = this->dx - v.getDx();
}
/*************************************************
* adds velocity to superman
*************************************************/
Velocity Velocity::operator + (Velocity & v)
{
this->dy = this->dy + v.getDy();
this->dx = this->dx + v.getDx();
}