求教：海龟的遗产传递问题
请问 我现在希望设计海龟死后他的财产可以以一定的比例留给后代。这些海龟如果代表的是穷人则它死后（年龄大预期值）会生出3个孩子，其生前的财产的90%均分给其孩子。若海龟是富裕的，其死后有随机1~2个孩子，财产已70%均分。请问大家如果加到下述程序中怎么实现globals
[
max-grain
]
patches-own
[
grain-here
max-grain-here
]
turtles-own
[
age
wealth
life-expectancy
metabolism
vision
inherited
]
to setup
ca
set max-grain 50
setup-patches
setup-turtles
setup-plots
update-plots
end
to setup-patches
ask patches
[ set max-grain-here 0
if (random-float 100.0) <= percent-best-land
[ set max-grain-here max-grain
set grain-here max-grain-here ] ]
repeat 5
[ ask patches with
[ set grain-here max-grain-here ]
diffuse grain-here 0.5 ]
repeat 10
[ diffuse grain-here 0.5]
ask patches
[ set grain-here floor grain-here
set max-grain-here grain-here
recolor-patch ]
end
to recolor-patch
set pcolor scale-color sky grain-here 0 max-grain
end
to setup-turtles
set-default-shape turtles "person"
crt num-people
[ move-to one-of patches
set size 1.5
set-initial-turtle-vars-age
set-initial-turtle-vars-wealth
set age random life-expectancy ]
recolor-turtles
end
to set-initial-turtle-vars-age
let max-wealth max of turtles
ifelse (wealth <= max-wealth / 3)
[ set color red
set age 0
face one-of neighbors4
set life-expectancy life-expectancy-min +
random life-expectancy-max
set metabolism random 1 + metabolism-low
set wealth metabolism + random 30
set vision 1 + random max-vision
set wealthwealth +Wealth-inherited-low ]
[ ifelse (wealth <= (max-wealth * 2 / 3))
[ set color yellow
set age 0
face one-of neighbors4
set life-expectancy life-expectancy-min +
random life-expectancy-max + 1
set metabolism1 + random metabolism-mid
set wealth metabolism + random 30
set vision 3 + random max-vision
set wealthwealth + Wealth-inherited-mid]
[ set color green
set age 0
face one-of neighbors4
set life-expectancy life-expectancy-min +
random life-expectancy-max+ 2
set metabolism 2 + random metabolism-up
set wealth metabolism + random 30
set vision 3 + random max-vision
set wealthwealth + Wealth-inherited-up ] ]
end
to set-initial-turtle-vars-wealth
let max-wealth max of turtles
set age 0
face one-of neighbors4
set life-expectancy life-expectancy-min +
random life-expectancy-max
set metabolism 1 + random metabolism-up
set wealth metabolism + random 30
set vision 1 + random max-vision
end
to redistribution
let max-wealth max of turtles
let min-wealth min of turtles
if (wealth <= max-wealth / 3)
end
to recolor-turtles
let max-wealth max of turtles
ask turtles
[ ifelse (wealth <= max-wealth / 3)
[ set color red ]
[ ifelse (wealth <= (max-wealth * 2 / 3))
[ set color yellow ]
[ set color green ] ] ]
ask turtles [ifelse show-wealth?
[ set label wealth ]
[ set label "" ]]
end
to go
ask turtles
[ turn-towards-grain ]
harvest
ask turtles
[ move-eat-age-die ]
recolor-turtles
if ticks mod grain-growth-interval = 0
[ ask patches [ grow-grain ] ]
if ticks mod 11 = 0
[ask turtles
[ redistribution ]]
if ticks mod 5 = 0
[ask turtles
[ visions ]]
tick
update-plots
end
to visions
set vision vision + 1
end
to turn-towards-grain
set heading 0
let best-direction 0
let best-amount grain-ahead
set heading 90
if (grain-ahead > best-amount)
[ set best-direction 90
set best-amount grain-ahead ]
set heading 180
if (grain-ahead > best-amount)
[ set best-direction 180
set best-amount grain-ahead ]
set heading 270
if (grain-ahead > best-amount)
[ set best-direction 270
set best-amount grain-ahead ]
set heading best-direction
end
to-report grain-ahead
let total 0
let how-far 1
repeat vision
[ set total total + of patch-ahead how-far
set how-far how-far + 1 ]
report total
end
to grow-grain
if (grain-here < max-grain-here)
[ set grain-here grain-here + num-grain-grown
if (grain-here > max-grain-here)
[ set grain-here max-grain-here ]
recolor-patch ]
end
to harvest
ask turtles
[ set wealth floor (wealth + (grain-here / (count turtles-here))) ]
ask turtles
[ set grain-here 0
recolor-patch ]
end
to move-eat-age-die
fd 1
set wealth (wealth - metabolism)
set age (age + 1)
if (age >= life-expectancy)
[ set-initial-turtle-vars-age ]
if (wealth < 0)
[ set-initial-turtle-vars-wealth ]
end
to setup-plots
set-current-plot "Class Plot"
set-plot-y-range 0 num-people
set-current-plot "Class Histogram"
set-plot-y-range 0 num-people
end
to update-plots
update-class-plot
update-class-histogram
update-lorenz-and-gini-plots
end
to update-class-plot
set-current-plot "Class Plot"
set-current-plot-pen "low"
plot count turtles with
set-current-plot-pen "mid"
plot count turtles with
set-current-plot-pen "up"
plot count turtles with
end
to update-class-histogram
set-current-plot "Class Histogram"
plot-pen-reset
set-plot-pen-color red
plot count turtles with
set-plot-pen-color yellow
plot count turtles with
set-plot-pen-color green
plot count turtles with
end
to update-lorenz-and-gini-plots
set-current-plot "Lorenz Curve"
clear-plot
set-current-plot-pen "equal"
plot 0
plot 100
set-current-plot-pen "lorenz"
set-plot-pen-interval 100 / num-people
plot 0
let sorted-wealths sort of turtles
let total-wealth sum sorted-wealths
let wealth-sum-so-far 0
let index 0
let gini-index-reserve 0
repeat num-people [
set wealth-sum-so-far (wealth-sum-so-far + item index sorted-wealths)
plot (wealth-sum-so-far / total-wealth) * 100
set index (index + 1)
set gini-index-reserve
gini-index-reserve +
(index / num-people) -
(wealth-sum-so-far / total-wealth)
]
set-current-plot "Gini-Index v. Time"
plot (gini-index-reserve / num-people) / area-of-equality-triangle
end
to-report area-of-equality-triangle
report (num-people * (num-people - 1) / 2) / (num-people ^ 2)
end 自己写了用的hatch 但加在上面的程序中运行的时候总是出现问题T_T
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