## mark a section (Learn more)

#- - - - - - - - - - - - - -# # # # a bit about bouncing # # by: evan # # # #- - - - - - - - - - - - - -# module Bouncing # first of all: def it_is_ok # ok? "ok." end # but: # when a thing def hits_the_ground_from the_height # if we can assume that the remaining_energy = the_height # then we can say if remaining_energy that_the "thing uses some of the #{remaining_energy} to bounce" # and rises_to the_next_peak_from(the_height) else # the thing just rests # and that is the end # of it end # it should be noted that: # in order to determine the def the_next_peak_from the_old_height; unless the_old_height < an_observable_bounce # we assume that new_height = the_old_height * the_bounciness else # the thing is no longer bouncing # percievable to this observer, anyway... end end # also, # when a thing # is dropped def from a_height # it hits_the_ground_from a_height end # likewise, # when a thing def rises_to a_new_height # then it will fall from a_new_height end # but... # and most importantly. # when the time is just right, # the thing just def rests; and_we_know it_is_ok #the end #----------------------------------------------# alias :and_we_know :puts alias :that_the :puts def the_bounciness; @bounciness end def an_observable_bounce @minimum_bounce end def bounciness=(amnt) @bounciness = amnt end def minimum_bounce=(amnt) @minimum_bounce = amnt end end ## and a thing class Thing include Bouncing def self.with_bounciness(bounce) thing = new thing.bounciness = bounce thing end def dropped_from height yield(self) hits_the_ground_from height end end ## and then you run it... Thing.with_bounciness(0.5).dropped_from(50) { |set| set.minimum_bounce = 0.01 } ## and it says: thing uses some of the 50 to bounce thing uses some of the 25.0 to bounce thing uses some of the 12.5 to bounce thing uses some of the 6.25 to bounce thing uses some of the 3.125 to bounce thing uses some of the 1.5625 to bounce thing uses some of the 0.78125 to bounce thing uses some of the 0.390625 to bounce thing uses some of the 0.1953125 to bounce thing uses some of the 0.09765625 to bounce thing uses some of the 0.048828125 to bounce thing uses some of the 0.0244140625 to bounce thing uses some of the 0.01220703125 to bounce thing uses some of the 0.006103515625 to bounce ok.

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