Exemplo n.º 1
0
/* find if any of the current balls intersect with each other in the 
 * current timestep.  returns the index of the 2 intersecting balls, 
 * the point and time of intersection */
int find_collision(TVector& point, double& timePoint, double time2, 
	     int& ball1, int& ball2) {

  TVector relativeV;
  TRay rays;
  double Mytime = 0.0, Add = time2/150.0, timedummy = 10000, timedummy2 = -1;
  TVector posi;
  
  /* Test all balls against each other in 150 small steps */
  for (int i = 0; i < ball_count - 1; i++){
    for (int j = i+1; j < ball_count; j++){

      // Find Distance
      relativeV = ball_vel[i]-ball_vel[j];
      rays = TRay(old_pos[i],TVector::unit(relativeV));
      Mytime = 0.0;
      
      // If distance detween centers greater than 2*radius an 
      // intersection occurred loop to find the exact intersection point
      if ( (rays.dist(old_pos[j])) > ball_r * 2 ) 
	continue;  
      
      while (Mytime < time2) {
	Mytime += Add;
	posi = old_pos[i] + relativeV*Mytime;
	if (posi.dist(old_pos[j]) <= ball_r * 2 ) {
	  point = posi;
	  if (timedummy > (Mytime - Add)) timedummy = Mytime-Add;
	  ball1 = i;
	  ball2 = j;
	  break;
	}
      }
    }
  }
  
  if (timedummy!=10000) { 
    timePoint=timedummy;
    return 1;
  }
  
  return 0;
}
Exemplo n.º 2
0
int FindBallCol(TVector& point, double& TimePoint, double Time2, int& BallNr1, int& BallNr2)
{
	TVector RelativeV;
	TRay rays;
	double MyTime=0.0, Add=Time2/150.0, Timedummy=10000, Timedummy2=-1;
	TVector posi;
	
	//Test all balls against eachother in 150 small steps
	for (int i=0;i<NrOfBalls-1;i++)
	{
	 for (int j=i+1;j<NrOfBalls;j++)
	 {	
		    RelativeV=ArrayVel[i]-ArrayVel[j];
			rays=TRay(OldPos[i],TVector::unit(RelativeV));
			MyTime=0.0;

			if ( (rays.dist(OldPos[j])) > 40) continue; 

			while (MyTime<Time2)
			{
			   MyTime+=Add;
			   posi=OldPos[i]+RelativeV*MyTime;
			   if (posi.dist(OldPos[j])<=40) {
										   point=posi;
										   if (Timedummy>(MyTime-Add)) Timedummy=MyTime-Add;
										   BallNr1=i;
										   BallNr2=j;
										   break;
										}
			
			}
	 }

	}

	if (Timedummy!=10000) { TimePoint=Timedummy;
	                        return 1;
	}

	return 0;
}
Exemplo n.º 3
0
bool MyGameState::FindBallCol(TVector& point, double& TimePoint, double Time2, int& BallNr1, int& BallNr2){
    TVector RelativeV;
    TRay rays;

    double MyTime=0.0, Add=Time2/150.0, Timedummy=10000, Timedummy2=-1;

    TVector posi;

    //Test all balls against eachother in 150 small steps

    for (int i = 0; i <= 15-1; i++){
        for (int j = i + 1; j<= 15; j++){
            RelativeV = movement[i] - movement[j];

            rays = TRay(oldPos[i],TVector::unit(RelativeV));
            MyTime=0.0;
            if ( rays.dist(oldPos[j]) > 10){
                continue;
            }
            while (MyTime < Time2){
                MyTime += Add;
                posi = oldPos[i] + RelativeV * MyTime;
                if (posi.dist(oldPos[j]) <= 3) {
                    point = posi;
                    if (Timedummy > (MyTime-Add)) {
                        Timedummy = MyTime - Add;
                    }
                    BallNr1=i;
                    BallNr2=j;
                    break;
                }
            }
        }
    }
    if (Timedummy!=10000) {
        TimePoint=Timedummy;
        return true;
    }
    return false;
}