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# encoding: utf-8
"""
Copyright 2011 iACT, Universite de Montreal, Jean Piche, Olivier Belanger, Jean-Michel Dumas
This file is part of Cecilia 5.
Cecilia 5 is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Cecilia 5 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Cecilia 5. If not, see <http://www.gnu.org/licenses/>.
"""
# 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
class Drunk:
def __init__(self, minValue, maxValue):
self.lastValue = random.randint(minValue, maxValue)
self.minValue = minValue
self.maxValue = maxValue
def next(self, maxStepSize=-2):
"""Method to call a new value from a generator objet.
drunk, droneAndJump, repeater and loopseg:
maxStepSize = -2
markov:
no argument
--- PARAMETERS ---
maxStepSize : Maximum step size for each call. If negative, repetition are not permitted.
"""
if self.lastValue < self.minValue or self.lastValue > self.maxValue:
return random.randint(self.minValue, self.maxValue)
direction = self.getDirection()
stepSize = self.getStepSize(direction, abs(maxStepSize))
if maxStepSize < 0:
minStepSize = 1
else:
minStepSize = 0
self.lastValue += direction * random.randint(minStepSize, stepSize)
if self.lastValue < self.minValue:
self.lastValue = self.minValue
elif self.lastValue > self.maxValue:
self.lastValue = self.maxValue
else:
self.lastValue = self.lastValue
return self.lastValue
def getDirection(self):
if self.lastValue == self.minValue:
return 1
elif self.lastValue == self.maxValue:
return -1
else:
return random.choice([1, -1])
def getStepSize(self, direction, maxStepSize):
if direction == -1:
return min(maxStepSize, self.lastValue - self.minValue)
else:
return min(maxStepSize, self.maxValue - self.lastValue)
def setLastValue(self, val):
self.lastValue = val
class DroneAndJump(Drunk):
def __init__(self, minValue, maxValue):
Drunk.__init__(self, minValue, maxValue)
self.minValue = minValue
self.maxValue = maxValue
self.beforeLastValue = random.randint(minValue, maxValue)
self.lastValue = self.beforeLastValue + 1
def next(self, maxStepSize=-2):
if self.beforeLastValue != self.lastValue:
self.lastValue = self.beforeLastValue
return self.beforeLastValue
self.beforeLastValue = self.lastValue
self.lastValue = Drunk.next(self, abs(maxStepSize))
return self.lastValue
def getStepSize(self, direction, maxStepSize):
if random.randint(0, 100) < 25:
return Drunk.getStepSize(self, direction, maxStepSize)
else:
return Drunk.getStepSize(self, direction, 0)
def setLastValue(self, val):
self.beforeLastValue = val
self.lastValue = self.beforeLastValue + 1
class Repeater(Drunk):
def __init__(self, minValue, maxValue):
Drunk.__init__(self, minValue, maxValue)
self.minValue = minValue
self.maxValue = maxValue
self.lastValue = random.randint(minValue, maxValue)
def next(self, maxStepSize=-2):
self.lastValue = Drunk.next(self, abs(maxStepSize))
return self.lastValue
def getStepSize(self, direction, maxStepSize):
if random.randint(0, 100) < 20:
return Drunk.getStepSize(self, direction, maxStepSize)
else:
return Drunk.getStepSize(self, direction, 0)
class Loopseg(Drunk):
def __init__(self, minValue, maxValue):
Drunk.__init__(self, minValue, maxValue)
self.minValue = minValue
self.maxValue = 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 next(self, maxStepSize=-2):
if self.recordState == 2:
self.lastValue = Drunk.next(self, maxStepSize)
self.recordState = random.choice([2, 2, 2, 1])
if len(self.recordedValues) != self.recordLength and self.recordState == 1:
self.lastValue = Drunk.next(self, maxStepSize)
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.next(self, maxStepSize)
self.recordedValues = [self.lastValue]
return self.lastValue
def loopAround(self):
self.lastValue = self.recordedValues[self.recordPlayback]
self.recordPlayback += 1
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