Returns the first argument with the sign of the second argument. A NaN {@code sign} argument is treated as positive. @param magnitude the value to re

Used internally by the getFeelers() methods. <br> Given an origin, a facing direction, a 'field of view' describing the limit of the outer whiskers, a

Dispatch a telegram to another entity with optional delay and any extra information supplied @param delay_ms the delay (in milliseconds) before the t

@return the 'from' node

@return the 'from' node

Get a list of obstacles that need to be tested for obstacle avoidance. @param m the moving entity @return a set containing the obstacles (maybe empty

** The next function tells whether a key or value can be cleared from ** a weak table. Non-collectable objects are never removed from weak ** tables.

See if two lines intersect <br> @param x0 start of line 1 @param y0 start of line 1 @param x1 end of line 1 @param y1 end of line 1 @param x2 start of

** main search function */

** this function can be called asynchronous (e.g. during a signal) */

Get the maximum force that can be applied to this entity

** inserts a new key into a hash table; first, check whether key's main ** position is free. If not, check whether colliding node is in its main **

Reduce the input argument using the Payne and Hanek method. This is good for all inputs 0.0 < x < inf Output is remainder after dividing by PI/2 Th

Multiply a double number by a power of 2. @param d number to multiply @param n power of 2 @return d &times; 2ⁿ

Set the colours to be used by the brolly.