def CalcEffectiveRadius(self, direction, planetPosition, planetRadius):
distToMiddle = geo2.Vec3DotD(planetPosition, direction)
if distToMiddle < 0:
return None
midPoint = geo2.Vec3ScaleD(direction, distToMiddle)
distToCenter = geo2.Vec3DistanceD(planetPosition, midPoint)
if distToCenter > planetRadius:
return None
return sqrt(planetRadius * planetRadius - distToCenter * distToCenter)
def CalcEffectiveRadius(self, direction, planetPosition, planetRadius):
"""
Effective radius is half the distance through the planet along
the ray of intersection(direction).
Assumes player ship is at (0,0,0)
direction - normalized direction
"""
distToMiddle = geo2.Vec3DotD(planetPosition, direction)
if distToMiddle < 0:
return None
midPoint = geo2.Vec3ScaleD(direction, distToMiddle)
distToCenter = geo2.Vec3DistanceD(planetPosition, midPoint)
if distToCenter > planetRadius:
return None
return sqrt(planetRadius * planetRadius - distToCenter * distToCenter)
def FindNextCollision(self, destination, candidates, popCollision=True):
minDist = None
time = blue.os.GetSimTime()
position = self.shipBall.GetVectorAt(blue.os.GetSimTime())
position = (position.x, position.y, position.z)
nextCollision = None
for each in candidates:
collisionBall = each[0]
collisionCenter = collisionBall.GetVectorAt(time)
collisionCenter = (collisionCenter.x, collisionCenter.y,
collisionCenter.z)
projection = geo2.Vec3DotD(collisionCenter, self.normDirection)
if minDist is None or projection < minDist:
minDist = projection
nextCollision = each
if nextCollision is not None and popCollision:
candidates.remove(nextCollision)
return nextCollision
def GetDistanceToTarget(self, direction, planetPosition):
return geo2.Vec3DotD(planetPosition, direction)
def GetDistanceToTarget(self, direction, planetPosition):
"""
Returns the distance to the point closest to planetPosition
along the direction vector.
"""
return geo2.Vec3DotD(planetPosition, direction)