public double GetDamage_Collision(IMapObject collidedWith, Point3D positionModel, Vector3D velocityModel, double mass1, double mass2)
{
const double MAXMASSRATIO = 3;
TakesDamageWorker_Props props = GetTypeModifier(collidedWith);
double speed = velocityModel.Length;
// If the impact velocity is low enough, there won't be damage
if (speed < props.VelocityThreshold)
{
return(0);
}
// Restrict mass
// If the difference in mass is large enough, then the larger could just be considered as a stationary object. Including more of the larger's
// mass would make it appear like there is more energy than there actually is (a probe hitting a large asteroid or a planet will feel the
// same impulse, even though the masses are very different)
UtilityCore.MinMax(ref mass1, ref mass2);
if (mass2 > mass1 * MAXMASSRATIO)
{
mass2 = mass1 * MAXMASSRATIO;
}
// Next check is the collision energy
// Energy = m/2 * v^2
double energy = ((mass1 + mass2) / 2d) * speed * speed;
//May or may not want this check
// If one of the masses is significantly small relative to the other, then velocity will need to be very large for damage to occur
// Next is the min energy threshold
if (energy < props.EnergyTheshold)
{
return(0);
}
// Final step should just be to convert energy into hitpoint loss
// HitPointLoss = Energy * c
double retVal = energy * props.EnergyToHitpointMult;
// Finally, run it through a randomization
retVal *= StaticRandom.GetRandomForThread().NextBellPercent(ItemOptions.DAMAGE_RANDOMBELL, props.RandomPercent);
//LogHit(mass1, mass2, speed, energy);
return(retVal);
}