def __init__(self, inputWatcher, window, defaultKeys = []):
'''
Creates a new ControlScheme object.
@param inputWatcher: The MouseWatcher object to use for tracking
the mouse and keys.
@param defaultKeys: is a collection of key types to be initialized
by default (optional). Acceptable values are "left", "right", "up",
"down", and "pause". The defaults for directional keys are the
arrows, WASD, and the equivalents of WASD on common alternate
keyboard layouts. The keys for "pause" are escape, p, and
enter.
'''
self.inputWatcher = inputWatcher
self.window = window
properties = window.getProperties()
self.centerX = properties.getXSize() // 2
self.centerY = properties.getYSize() // 2
self.prevMouseX = self.centerX
self.keyMap = dict()
self.addKeys(LEFT, [KeyboardButton.left(), KeyboardButton.asciiKey('a'), KeyboardButton.asciiKey('q')])
self.addKeys(RIGHT, [KeyboardButton.right(), KeyboardButton.asciiKey('d'), KeyboardButton.asciiKey('e')])
self.addKeys(UP, [KeyboardButton.up(), KeyboardButton.asciiKey('w'), KeyboardButton.asciiKey('z'), KeyboardButton.asciiKey(',')])
self.addKeys(DOWN, [KeyboardButton.down(), KeyboardButton.asciiKey('s'), KeyboardButton.asciiKey('o')])
self.addKeys(PAUSE, [KeyboardButton.escape(), KeyboardButton.asciiKey('p'), KeyboardButton.enter()])
self.addKeys(SWITCH, [KeyboardButton.shift(), KeyboardButton.control(), KeyboardButton.asciiKey('f'), KeyboardButton.asciiKey('/'), MouseButton.two(), KeyboardButton.space()])
self.addKeys(PUSH, [MouseButton.one()])
self.addKeys(PULL, [MouseButton.three()])
self.addKeys(QUIT, [KeyboardButton.asciiKey('q')])
#in case the mouse leaves the window
self.mouseX = 0
self.mouseY = 0
