@return the y position

applies a 2D transformation matrix to a std::vector of Vector2Ds

* Helpers for create methods.

ARRIVE Used internally to calculate the force for this behaviour on the entity that owns this steering behaviour object.

Determines whether the entity still exists in this world. @param id the entity's ID number @return true if entity is still alive

** Call a function (C or Lua). The function to be called is at *func. ** The arguments are on the stack, right after the function. ** When returns, al

@return the x position

------------------------------ Perp ------------------------------------ Returns a vector perpendicular to this vector ------------------------------

returns a random double between zero and 1

The square of the distance between two vectors @param v0 the first vector @param v1 the second vector @return square of the distance between them

DO NOT USE THIS METHOD <br/> This method is left to ensure backward compatibility with library versions prior to 1.0 <br/> Use the draw(elapsedTime) m

returns true if the end of the vector is found (a zero value marks the end)

Get the world end position

For a given point get the partition key

Add two numbers in split form. @param a first term of addition @param b second term of addition @param ans placeholder where to put the result

Create a new list of vectors from the provided list after being transformed by this matrix. @param vList the original list of vectors @return a list

------------------------- LengthSq ------------------------------------- returns the squared length of a 2D vector ----------------------------------

create a rotation matrix

Determine whether this entity is inside or part inside the domain. This method is used by the world draw method to see if this entity should be drawn.

** search function for integers */