Add new data after head. Overwrites any data that may have been stored after head. @param data the data to add

Clamp a value to the range 0..255

@return data stored on this node

moves the pointer to the right, returns the data stored there @return the data of next node, null if there is no next node

Calculates the array index of a stone stored at (x, y) @param x the x coordinate @param y the y coordinate @return the array index

Fills in a circle centered at (centerX, centerY) with radius $radius$

Draws a string centered at (x, y) of font $fontString$, whose contents are $string$. The maximum/default fontsize will be $maximumFontHeight$, and the

Checks if a coordinate is valid @param x x coordinate @param y y coordinate @return whether or not this coordinate is part of the board

shows where to mark the last coordinate @return the last played stone

@return the data of the current node

used to find the opposite color stone @return the opposite stone type

Converts a named coordinate eg C16, T5, K10, etc to an x and y coordinate @param namedCoordinate a capitalized version of the named coordinate. Must

get current board state @return the stones array corresponding to the current board state

The pass. Thread safe @param color the type of pass

Places a stone onto the board representation. Thread safe @param x x coordinate @param y y coordinate @param color the type of stone to place

Draws the outline of a circle centered at (centerX, centerY) with radius $radius$