请问：! u2 E9 R" \$ `9 O1 s+ f* ?9 F) z
随机产生的turtle 已经在patch的坐标上上下左右一格格运动，当turtle碰到一个随即分布的patch以一定概率粘合,patch变色，其他turtle经过也还是以一定概率粘合的，粘合后turtle的能量就会转变到patch上，并且以一定速率消耗它，怎么编写这个过程？下面是我编写的，运行时就出错了。怎么改正呢？! F/ _ h+ Q4 Q) R3 @. ]. r$ u2 A
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turtles-own [ energy ]
; c r* D( {& Zto setup
5 V N# s0 X% ?9 ~clear-all- B" q7 i, e! v" }
set-default-shape turtles "square"$ Q; s$ H4 x( L* y Y
crt nutrition
' m* n: q4 B; e. }) I) nask turtles[: o5 `0 ` L2 ] s
set color white7 R! t% m# I( H3 K
setxy random-pxcor random-pycor]
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+ x+ |6 f- U. N4 Bask n-of microbes-initialization patches
% h% n) @+ D' O, C0 m [ set pcolor green]+ r4 D% d( P* _7 `* |, W
ask turtles [set energy 1]0 K/ H" q; e( z; Z/ Y6 S+ h
end! W& R; e6 Y; h5 ~ T* v/ p
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to go! k3 _$ u* G# b" q9 u
ask turtles [set heading 90 * random 4 fd 1]) r" u& ?- J/ D/ F- y; ]
ask patches with [ any? turtles-here]
( J* z) T" M! C" q* P: L [ if pcolor = green and random 100 < chance-of-congregating [tt ]]3 G$ w8 a( j% S4 ?1 o
ask turtles [ if energy = 0 [die ]]% c) A9 N" {+ M) g1 L
end
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( `4 w1 h/ e* P mto tt
( n# @; E: I+ g1 Vask patches [set pcolor gray ]
0 X' X9 h8 T( S! [* V' J" E- _ask turtles [set energy energy - 1]
- e& Q1 G0 Y9 [% j- B5 a/ Yend" W1 w6 |* z- n# J3 w# z) t
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发表于 2008-4-8 10:49:43
楼主
