因此，我创造了一个世界的棕色边界，以便寻找枯萎花朵的机器人不会走出该区域。然而，当我随机生成海龟（花）时，它们有时会在边界生成，机器人无法导航到水中......任何想法如何修改rand-xy-co到使植物生长，使它们不会在边界生成。
我正在创建leaves：
; creating plants (leaves)
to setup-leaves
create-leaves num-plants [ ; number of plants can vary
rand-xy-co ; set random positions for the plants
set shape "flower" ; initialize the plant to color red and size 2
set color red
set size 2
]
end
边界设置如下：
;set boundary obstacles. These patches tell the robot to stay within identified bounds.
ask patches
[
set pcolor background-colour ; set colour of background
if (pxcor >= max-pxcor - boundary-width) ; boundary width can vary
[ set pcolor brown ]
if (pxcor <= min-pxcor + boundary-width)
[ set pcolor brown ]
if (pycor >= max-pycor - boundary-width)
[ set pcolor brown ]
if (pycor <= min-pycor + boundary-width)
[ set pcolor brown ]
]
rand-xy-co：
; Utilities. Positions a new turtle randomly on the grid, taking care not to
;place it on top of another turtle
to rand-xy-co
let x 0
let y 0
loop [
set x random-pxcor
set y random-pycor
if not any? turtles-on patch x y and not (abs x < 4 and abs y < 4) [setxy x y stop]
]
end
该项目的整个代码：
; Plant Water and Nutrient Distribution Agent
; Simulates a plant water distribution robot that avoids obstacles and waters plants in the environment
; using simple reactive behaviour.
;TODO: send agent at base when battery life <10% or after all plants are done watering
;initialize robot's position at base
;make sure plants aren't created on the boundary of the house
breed [robots robot] ; Name of the breed of plant robots
breed [leaves leaf] ; Name of the breed of plants in need of water
breed [ watered water-1] ; Name of the breed of watered plants
globals
[
background-colour ; colour of the background except for obstacles
obstacles-colour ; colour of the obstacles
robot-colour ; colour of the robot
clock ; tracking time
watered-plants ; plants watered
distance-traveled ; distance traveled by the robot
battery-life ; battery life left
water-poured ; how much water has been used
]
to setup
;clear all
clear-all
set-default-shape robots "ufo side" ; sets shapes for agent
set background-colour green + 3 ; set colour of background light green
set obstacles-colour brown ; set colour of obstacles brown
setup-leaves ;add plants to the world
set robot-colour gray ; set colour of robot to gray
set clock 0 ;initialize time
set distance-traveled 0 ;initialize distance
set battery-life 100 ;initialize battery life to 100%
set water-poured 0 ;initialize water used to 0
;set boundary obstacles. These patches tell the robot to stay within identified bounds.
ask patches
[
set pcolor background-colour ; set colour of background
if (pxcor >= max-pxcor - boundary-width) ; boundary width can vary
[ set pcolor brown ]
if (pxcor <= min-pxcor + boundary-width)
[ set pcolor brown ]
if (pycor >= max-pycor - boundary-width)
[ set pcolor brown ]
if (pycor <= min-pycor + boundary-width)
[ set pcolor brown ]
]
; creates colour, size and random location of single robot
create-robots 1
[
set size robot-size
set color robot-colour
let this-patch one-of patches with [pcolor != obstacles-colour] ; sets an initial random position within the outside boundary
set xcor [pxcor] of this-patch
set ycor [pycor] of this-patch
]
end
; creating plants (leaves)
to setup-leaves
create-leaves num-plants [ ; number of plants can vary
rand-xy-co ; set random positions for the plants
set shape "flower" ; initialize the plant to color red and size 2
set color red
set size 2
]
end
;detecting a plant (leaf)
to-report detect-leaf
ifelse any? leaves-here
[report true] ; set as true if plant breed is detected
[report false]
end
;watering a leaf (plant)
to water-leaf
set watered-plants watered-plants + 1 ;when a plant is watered, increase counter by 1
set water-poured watered-plants * ((4 * (100 - soil-moisture)) / 50) ; when plant is watered, increase water-poured counter
; this formula is based on the average amount of water a houseplant needs >> 4 oz at 50% soil moisture
set clock clock + 10 ; add 10 ticks to the clock when watering plants since the robot has to spend time to water
set battery-life battery-life - 5 ; 5% of battery life is spent for each plant watered
ask one-of leaves-here [ ; mark breed as watered when plant is watered; change flower color to yellow
set breed watered
set shape "flower"
set color yellow
set size 3 ;increase the size of the flower (grown)
]
end
; This defines how the robot should move.
to make-move
if battery-life <= 0 [stop] ; robot cannot run if it doesn't have any battery life
;This behaviour is modified from the Look Ahead Example model in the Models Library
let this-patch patch-ahead 1
if detect-leaf [water-leaf stop]
ifelse (this-patch != nobody) and ([pcolor] of this-patch = obstacles-colour)
[ lt random-float 360 ] ; We see an obstacle patch in front of us. Turn a random amount.
[ fd 1 ] ; Otherwise, it is safe to move forward.
set distance-traveled distance-traveled + 1 ; every step increases distance-traveled counter by 1
end
;Procedure when the button Go is pressed
to go
;The robot moves around.
if count leaves = 0 [stop] ;stop when all leaves are watered
set clock clock + 1 ;update time
;wait .05 ; wait for better viewing
set battery-life 100 - (distance-traveled / 900) ; battery life varies based on distance traveled
ask robots [without-interruption [make-move]] ;robots move
update-and-plot ;update the graphs
tick
end
;plot velocity graph
to update-and-plot-velocity
set-current-plot "Velocity"
plotxy distance-traveled clock
end
;plot water usage graph
to update-and-plot-water-usage
set-current-plot "Water Usage"
plotxy water-poured watered-plants
end
;plot energy usage graph
to update-and-plot-energy-usage
set-current-plot "Energy Usage"
plotxy clock (100 - battery-life)
end
;plot watered plants graph
to update-and-plot-watered-plants
set-current-plot "Watered Plants"
plotxy clock watered-plants
end
;plot wilting plants graph
to update-and-plot-wilting-plants
set-current-plot "Wilting Plants"
plotxy clock count leaves
end
;call all the graphs
to update-and-plot
update-and-plot-velocity
update-and-plot-water-usage
update-and-plot-energy-usage
update-and-plot-watered-plants
update-and-plot-wilting-plants
end
; Creates obstacles in the environment by drawing them on the world
to make-obstacles
if mouse-down?
[ ask patches
[ if ((abs (pxcor - mouse-xcor)) < 1) and ((abs (pycor - mouse-ycor)) < 1)
[set pcolor obstacles-colour]]
]
end
; Removes obtacles in the environment.
to erase-obstacles
if mouse-down?
[ ask patches
[ if ((abs (pxcor - mouse-xcor)) < 1) and ((abs (pycor - mouse-ycor)) < 1)
[set pcolor background-colour]]
]
end
; Detecting obstacles
; Obstacles are obstacles and other agents.
to-report detect-obstacle
ifelse any? patches in-cone 2 90 with [pcolor = brown] or any? other robots in-cone 2 90
[report true]
[report false]
end
; The robot avoids any obstacles in the environment.
;to avoid-obstacles
;if (count patches in-cone radius-length radius-angle with [pcolor = obstacles-colour] > 0) ; there is an obstacle nearby
;[
;set heading heading + random 45 - random 45
;]
;end
; This instructs the agent to move the pen up if it is down, or vice versa.
to plot-paths
ifelse (pen-mode = "up")
[ pen-down ]
[ pen-up ]
end
; Utilities. Positions a new turtle randomly on the grid, taking care not to
;place it on top of another turtle
to rand-xy-co
let x 0
let y 0
loop [
set x random-pxcor
set y random-pycor
if not any? turtles-on patch x y and not (abs x < 4 and abs y < 4) [setxy x y stop]
]
end
;Team 6 has modified the Vacuum Cleaner Robot NetLogo model to fit the needs of this project
; Copyright 2009 by Thomas Christy and William John Teahan. All rights reserved.
;
; Permission to use, modify or redistribute this model is hereby granted,
; provided that both of the following requirements are followed:
; a) this copyright notice is included.
; b) this model will not be redistributed for profit without permission
; from William John Teahan.
; Contact William John Teahan for appropriate licenses for redistribution for
; profit.
;
; To refer to this model in publications, please use:
;
; Vacuum Cleaner Robot NetLogo model.
; Artificial Intelligence. Teahan, W. J. (2010). Ventus Publishing Aps.
;
答案 0 :(得分：2)
最简单的方法是只在非白色斑块上创建花朵：
to rand-xy-co
move-to one-of patches with [ pcolor != brown and not any? turtles-here ]
end
但请确保在调用setup-leaves之前设置补丁的颜色。