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# Random:
# Randomly choose, within a certain range, a new next value
# arg 1: maxStepSize (negative value not allowed stepSize == 0)
# arg 2: maximum value allowed
import random
# TODO: replace magic numbers with constants
class Drunk:
def __init__( self, maxValue ):
self.lastValue = random.randint( 0, maxValue )
def getNextValue( self, maxStepSize, maxValue ):
if self.lastValue < 0 or self.lastValue > maxValue:
return random.randint( 0, maxValue )
direction = self.getDirection( maxValue )
stepSize = self.getStepSize( direction, abs(maxStepSize), maxValue )
if maxStepSize < 0:
minStepSize = 1
else:
minStepSize = 0
self.lastValue += direction * random.randint( minStepSize, stepSize )
return self.lastValue
def getDirection( self, maxValue ):
if self.lastValue == 0:
return 1
elif self.lastValue == maxValue:
return -1
else:
return random.choice( [ 1, -1 ] )
def getStepSize( self, direction, maxStepSize, maxValue, ):
if direction == -1:
return min( maxStepSize, self.lastValue )
else:
return min( maxStepSize, maxValue - self.lastValue )
class DroneAndJump( Drunk ):
def __init__( self, maxValue ):
Drunk.__init__( self, maxValue )
self.beforeLastValue = random.randint( 0, maxValue )
self.lastValue = self.beforeLastValue + 1
def getNextValue( self, maxStepSize, maxValue ):
if self.beforeLastValue != self.lastValue:
self.lastValue = self.beforeLastValue
return self.beforeLastValue
self.beforeLastValue = self.lastValue
self.lastValue = Drunk.getNextValue( self, abs(maxStepSize), maxValue )
return self.lastValue
def getStepSize( self, direction, maxStepSize, maxValue ):
if random.randint( 0, 100 ) < 25:
return Drunk.getStepSize( self, direction, maxStepSize, maxValue )
else:
return Drunk.getStepSize( self, direction, 0, maxValue )
class Repeter( Drunk ):
def __init__( self, maxValue ):
Drunk.__init__( self, maxValue)
self.lastValue = random.randint( 0, maxValue)
def getNextValue( self, maxStepSize, maxValue ):
self.lastValue = Drunk.getNextValue( self, abs(maxStepSize), maxValue )
return self.lastValue
def getStepSize( self, direction, maxStepSize, maxValue ):
if random.randint( 0, 100 ) < 15:
return Drunk.getStepSize( self, direction, maxStepSize, maxValue )
else:
return Drunk.getStepSize( self, direction, 0, maxValue )
class Loopseg( Drunk ):
def __init__( self, maxValue ):
Drunk.__init__( self, maxValue )
self.recordedValues = []
self.recordState = 2
self.recordPlayback = 0
self.loopPlayback = 1
self.recordLength = random.randint( 3, 6 )
self.recordLoopTime = random.randint( 1, 4 )
def getNextValue( self, maxStepSize, maxValue ):
if self.recordState == 2:
self.lastValue = Drunk.getNextValue( self, maxStepSize, maxValue )
self.recordState = random.choice([2, 2, 2, 1])
if len(self.recordedValues) != self.recordLength and self.recordState == 1:
self.lastValue = Drunk.getNextValue( self, maxStepSize, maxValue )
self.recordedValues.append( self.lastValue )
elif self.recordState == 1 or self.recordState == 0:
self.recordState = 0
if self.recordPlayback < self.recordLength:
self.loopAround()
else:
if self.loopPlayback < self.recordLoopTime:
self.recordPlayback = 0
self.loopPlayback += 1
self.loopAround()
else:
self.recordedValues = []
self.recordState = 2
self.recordPlayback = 0
self.loopPlayback = 1
self.recordLength = random.randint( 3, 6 )
self.recordLoopTime = random.randint( 1, 4 )
self.lastValue = Drunk.getNextValue( self, maxStepSize, maxValue )
self.recordedValues = [self.lastValue]
return self.lastValue
def loopAround( self ):
self.lastValue = self.recordedValues[self.recordPlayback]
self.recordPlayback += 1
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