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Contents
module Ludy
# dices, e.g., 4d6, 2d20, etc.
class Dices
attr_reader :amounts, :faces
# the default dice is 1d20
def initialize amounts = 1, faces = 20
@amounts = amounts
@faces = faces
end
# roll the dices
def roll
@amounts.roll @faces
end
# the possible min value these dices would roll out.
def min; @amounts; end
# the possible max value these dices would roll out.
def max; @amounts*@faces; end
end
# a dice set could contain 4d6 + 2d20 and more dices.
class DiceSet
attr_reader :min, :max
def initialize *args
@diceset = args
@min = @max = 0
@diceset.each{ |i|
@min += i.min
@max += i.max
}
end
# roll the dice set
def roll
result = 0
@diceset.each { |i| result += i.roll }
result
end
# put dices into this dice set
def << dices
@diceset << dices
@min += dices.min
@max += dices.max
self
end
end
end
class Numeric
# roll dices (with amounts equal to self.to_i) with faces = ?
def roll faces = 20
return nil unless self > 0 && self.integer? &&
faces > 0 && faces.integer?
result = 0
1.step(self){ |i| result += rand(faces) + 1 }
result
end
# create dices with faces = ?
def dices faces = 20
Ludy::Dices.new self, faces
end
end
Version data entries
10 entries across 10 versions & 1 rubygems