netlogo - 西北扩展和代理导航
问题描述
我正在尝试解决如何实现代理导航。我已经将我的模型设置为在我的疏散模型中的每个“地板”补丁上生成节点。我还将海龟链接到相应的节点。我想做的是让疏散人员绘制一条通往出口的路径并同时执行疏散。我使用的 png 图像是具有白色地板和黑色墙壁/障碍物的基本平面图,我认为通过在白色地板上萌生节点,代理将自动绕过所述障碍物。我知道使用 nw 扩展是可能的,但是我未能将其合并到我的模型中。我已经查看了链接行走龟示例,但仍然无法弄清楚这一点。有没有人根据下面的代码对如何做到这一点有任何建议?或者关于如何整合寻路的任何建议?任何帮助将非常感激。
breed [nodes node]
breed [cells cell]
breed [evacuees evacuee]
evacuees-own
[ target
direction
]
to setup
clear-all
set-default-shape turtles "person";
import-pcolors "floorplan.png"
ask n-of evacnum patches with [pcolor = white]
[
sprout-evacuees 1 [
set size 7
set color green
;set speed 1 + random-float 1.5
ifelse random 2 = 0
[ set direction 1
]
[ set direction -1
]
]
]
ask patches with [ pcolor = white ] [
sprout-nodes 1 [
set size 0.5
set shape "circle"
set color grey
]
]
ask nodes [
create-links-with turtles-on neighbors4 [
set color grey
]
]
ask patch 146 199
[
sprout-cells 1 [
set size 1.5
set shape "box"
set color yellow
]
]
ask evacuees
[ set target one-of min-n-of 5 nodes [distance myself]
face target
]
reset-ticks
end
to go
move
tick
end
to move
ask evacuees
[
walk
forward 0.25
if distance target < 0.2
[ set target one-of min-n-of 5 nodes [distance myself]
]
face target
]
end
to walk
if not wall? (90 * direction) and wall? (135 * direction) [ rt 90 *
direction ]
while [wall? 0] [ lt 90 * direction ]
end
to-report wall? [angle]
report black = [pcolor] of patch-right-and-ahead angle 1
end
解决方案
这个答案是我在这里的答案的简化版本,因此有关更多详细信息或更灵活的实现,请查看。这种简单的方法让疏散者检查相邻补丁上的哪些节点最接近exit-node
,然后他们移动到该节点。使用基于您上面的代码的简单设置(但没有平面图,我没有看到发布的内容):
extensions [ nw ]
breed [nodes node]
breed [cells cell]
breed [evacuees evacuee]
globals [ exit-node ]
to setup
clear-all
set-default-shape turtles "person";
ask patches [ set pcolor white ]
ask patches with [ pxcor mod 5 = 0 ] [
set pcolor black
]
ask patches with [ pycor mod 10 = 0 ] [
set pcolor white
]
ask n-of 5 patches with [pcolor = white] [
sprout-evacuees 1 [
set size 2
set color green
]
]
ask patches with [ pcolor = white ] [
sprout-nodes 1 [
set size 0.5
set shape "circle"
set color grey
]
]
ask nodes [
create-links-with nodes-on neighbors4 [
set color grey
]
]
ask patch 16 0 [
sprout-cells 1 [
set size 1.5
set shape "box"
set color yellow
]
]
ask one-of cells [
set exit-node one-of nodes-here
]
reset-ticks
end
现在,一些简单的运动代码:
to go
ask evacuees [
let target min-one-of nodes-on neighbors4 [
length nw:turtles-on-path-to exit-node
]
move-to target
if any? cells-here [
show "I HAVE EVACUATED!"
die
]
]
tick
end
要获得类似的行为:
编辑:
将全局变量更改为globals [ exits ]
并替换它:
ask patch 16 0 [
sprout-cells 1 [
set size 1.5
set shape "box"
set color yellow
]
]
ask one-of cells [
set exit-node one-of nodes-here
]
有了这个:
set exits nodes-on ( patch-set patch 16 0 patch -16 0 )
ask exits [
hatch-cells 1 [
set size 1.5
set shape "box"
set color yellow
]
]
你应该能够使用go
下面的修改让撤离者寻找最近的门:
to go
ask evacuees [
let my-node one-of nodes-on patch-here
let my-exit min-one-of exits [
length nw:turtles-on-path-to my-node
]
let target min-one-of nodes-on neighbors4 [
length nw:turtles-on-path-to my-exit
]
move-to target
if any? cells-here [
show "I HAVE EVACUATED!"
die
]
]
tick
end
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