Clears the history of frame starting times. Should be called when the app is paused or otherwise not generating frames, to avoid inaccurate frame rate

Creates a RotatingGroup by computing the distance and angle to center from the first element ID in the ids array.

Creates a wall by constructing a rectangle whose corners are (xmin,ymin) and (xmax,ymax), and rotating the box counterclockwise through the given angl

Called by FieldView to draw the balls currently in play.

Calls FieldViewManager.doDraw to render the game field to the display.

draw on actual position @param xOffset board x offset @param yOffset board y offset @param squareSize @param c @param view

Causes the colors returned by red/blue/greenColorComponent methods to be inverted for the given number of frames. This can be used to flash an element

Returns the motor speed of the Box2D joint, normalized to be positive when the flipper is moving up.

Returns the magnitude of the gravity vector.

Called when the view is touched. Activates flippers, starts a new game if one is not in progress, and launches a ball if one is not in play.

Extracts common values from the definition parameter map, and calls finishCreate to allow subclasses to further initialize themselves. Subclasses shou

Returns a List with the same objects in the same order as jsonArray. Recursively converts nested JSONArray and JSONObject values to List and Map objec

Returns a List with the same keys and values as jsonObject. Recursively converts nested JSONArray and JSONObject values to List and Map objects.

@return true if movement to the left was successfull.

@return true if movement to the right was successfull.

If argument is a JSONArray or JSONObject, returns the equivalent List or Map. If argument is JSONObject.NULL, returns null. Otherwise, returns the arg

unused!

Removes balls that are not in play, as determined by optional "deadzone" property of launch parameters in field layout.