private void BeamDamageCheck(GameTime gameTime)
{
if (turretWeapon.firetype != Weapon.fireType.Beam)
{
return;
}
if (!turretWeapon.beamIsFiring())
{
return;
}
if (turretWeapon.curBeamDamageTime > 0)
{
turretWeapon.curBeamDamageTime -= (int)gameTime.ElapsedGameTime.TotalMilliseconds;
return;
}
int rayLength = turretWeapon.beamRange;
turretWeapon.curBeamDamageTime = turretWeapon.beamDamageTime;
Matrix turretOrientation = Matrix.CreateFromQuaternion(rotateQuat);
//now let's check if the beam damaged any of the ships.
for (int k = 0; k < FrameworkCore.level.Ships.Count; k++)
{
Collideable ship = FrameworkCore.level.Ships[k];
//don't hit myself.
if (ship == parentShip)
{
continue;
}
//don't hit destroyed ships.
if (ship.IsDestroyed)
{
continue;
}
//no friendly fire.
if (ship.owner != null &&
ship.owner.factionName == parentShip.owner.factionName)
{
continue;
}
for (int i = 0; i < muzzleOffsets.Length; i++)
{
Vector3 muzzleVec = position;
muzzleVec +=
(turretOrientation.Right * muzzleOffsets[i].X) +
(turretOrientation.Up * muzzleOffsets[i].Y) +
(turretOrientation.Forward * -muzzleOffsets[i].Z);
Vector3 finalPredictedPosition = muzzleVec + turretOrientation.Forward * 128;
Vector3 rayDir = finalPredictedPosition - muzzleVec;
rayDir.Normalize();
Ray beamRay = new Ray(muzzleVec, rayDir);
if (ship.CollisionSpheres.Length > 1)
{
//if this is a multi-sphere ship, then first do a
//preliminary check on the ship's all-encompassing bSphere.
//if it comes false, then skip doing the detailed check.
if (ship.BSphere.Intersects(beamRay) > rayLength)
{
continue;
}
}
for (int m = 0; m < ship.CollisionSpheres.Length; m++)
{
if (ship.CollisionSpheres[m].sphere.Intersects(beamRay) <= rayLength)
{
ship.beamHit(parentShip, ship.CollisionSpheres[m].sphere.Center,
turretWeapon.beamMinDamage, turretWeapon.beamMaxDamage, muzzleVec);
break;
}
}
}
}
}
