这段代码用于求解本对象对传入参数m的引力,请问哪行代码有问题?PVectorattract(Moverm){PVectorforce=PVector.sub(m.location,this.location);floatd=force.mag();d=constrain(d,5.0,25.0);force.normalize();floatstrength=(G*mass*m.mass)/(d*d);force.mult(strength);returnforce;}
A.
PVector force = PVector.sub(m.location, this.location );
B.
d = constrain(d,5.0,25.0);
C.
float strength = (G * mass * m.mass) / (d * d);