def _roll_temp(self, avg, op, mod, table):
'''Look up temp variation from table.'''
roll = drm() + mod
# todo: replace with table lookup func
for i, var, newmod in table:
if i > roll:
return op(avg, var), newmod
def _roll_duration(base, mod):
'''Look up precipitation duration from table.'''
roll = drm() + mod
for row in precipitation_duration_table:
if roll <= row[0]:
return row[base]
return precipitation_duration_table[-1][base]
def _roll_inches(base, mod):
'''Look up precipitation inches from table.'''
roll = drm() + mod
for row in precipitation_inches_table:
if roll <= row[0]:
return row[base]
return precipitation_inches_table[-1][base]
def _calc_precipitation(self, prev_day, chance, cloud_table):
'''Is it raining?
:param chance: % chance of precipitation
:param cloud_table: data from month table
'''
if prev_day and prev_day.precipitation_end > 24:
self.precipitation = prev_day.precipitation
self.precipitation_start = 1
self.precipitation_end = prev_day.precipitation_end - 24
self.precipitation_mods = prev_day.precipitation_mods
self.wind = prev_day.wind # todo roll my own wind
cloud_mod = 30
else:
roll = drm() + chance
if roll > 100:
self.precipitation = None
while self.precipitation is None:
# Note: sets start/end.
self.precipitation, self.wind = self._roll_precipitation()
cloud_mod = 30
else:
self.precipitation = None
self.precipitation_start = 0
self.precipitation_end = 0
self.precipitation_mods = (0, 0, 0, 0)
self.wind = self._roll_wind(1, -10) # clear
cloud_mod = 0
# Cloud cover
roll = d100() + cloud_mod
if roll <= cloud_table[0]:
self.cloud = 'Clear'
elif roll <= cloud_table[1]:
self.cloud = 'Partly'
else:
self.cloud = 'Cloudy'
def _roll_wind(self, base, storm_mod):
'''Look up wind speed from table.'''
roll = drm() + storm_mod + self.wind_mod
# Only modify non-storm winds.
if base == 1:
roll += self.wind_mod
for row in wind_table:
if roll <= row[0]:
return row[base]
return wind_table[0][base]
