让龟等待x数量的蜱

Question

我想要做的一件事就是让一群乌龟四处走动，但是当到达目的地时，乌龟会在继续前等待一定数量的蜱虫。也有可能使海龟根据其目的地（不同的斑块颜色）等待不同数量的滴答。这是一个使乌龟品种或全球变量来计算蜱数量的情况吗？有希望的相关代码如下。

Answer 1

你是对的，这可以通过让海龟计算它们在补丁上的滴答数来完成。另外这必须是一个海龟变量，而不是全局变量，因为每个龟都会有这个

的方法，我用不同的值是这样的：

1. 一旦龟到达目的地记录ticks（记录迄今为止已经传递的滴答数量的全局变量）转换为龟变量，如ticks-since-here。这就像一个时间戳。

2. 在每个连续的滴答检查当前时间ticks全局变量和ticks-since-here乌龟变量之间的差异。如果这变得比蜱的数量更多，龟允许留在补丁上，让它选择并移动到新的目的地。

   品种[游客游客]

   globals [ number-of-visitors ] 
   
   visitors-own [ 
       ; visitors own destination 
       destination 
       ticks-since-here 
   ] 
   
   to go 
       ask visitors [ 
       move 
       ] 
       tick 
   end 
   
   to move 
       ; Instructions to move the agents around the environment go here 
       ; comparing patch standing on to dest, if at dest then choose random new dest 
       ; then more forward towards new dest 
       ifelse (patch-here = destination) 
       [ 
       if ticks - ticks-since-here > ticks-to-stay-on-patch patch-here 
       [ 
        set ticks-since-here 0 
        set destination one-of patches with 
        [ 
        pcolor = 65 or pcolor = 95 or pcolor = 125 or pcolor = 25 or pcolor = 15 or pcolor = 5 
        ] 
       ] 
       ] 
       [ 
       face destination 
       forward 1 
       if (patch-here = destination) 
       [ 
        set ticks-since-here ticks 
       ] 
       ] 
   end 
   
   to-report ticks-to-stay-on-patch [p] 
       if [pcolor] of p = 65 
       [ 
        report 6 
       ] 
       if [pcolor] of p = 95 
       [ 
        report 5 
       ] 
       if [pcolor] of p = 125 
       [ 
        report 4 
       ] 
       if [pcolor] of p = 25 
       [ 
        report 3 
       ] 
       if [pcolor] of p = 15 
       [ 
        report 2 
       ] 
       if [pcolor] of p = 5 
       [ 
        report 1 
       ] 
   end 
   
   to setup-people 
       ;;;; added the following lines to facilitate world view creation 
       ask patches 
       [ 
       set pcolor one-of [65 95 125 25 15 5] 
       ] 
       set number-of-visitors 100 
       ;;;; 
   
       create-visitors number-of-visitors 
       [ 
       ask visitors 
       [ 
        ; set the shape of the visitor to "visitor" 
        set shape "person" 
        ; set the color of visitor to white 
        set color white 
        ; give person a random xy 
        setxy (random 50) (random 50) 
        ; set visitors destination variable 
        set destination one-of patches with 
        [ 
        pcolor = 65 or pcolor = 95 or pcolor = 125 or pcolor = 25 or pcolor = 15 or pcolor = 5 
        ] 
       ] 
       ] 
   end