checking condition for two different breed of agents at once

Question

I have two agents mosquito and human. they both have different states like susceptible and infected. I want to check states for my agents and do the action I want to check if mosquito is infected and human susceptible then infect human and vice versa. please help on the codes

to go
  ask human
  [
    set heading  random 360
    forward random 2
      
      ]
  **if any? human-here infected? true and any? mosquito-here infected? false
ask mosquito [ set infected? true
    set color red]
  tick** 
end

Answer 1

You first need to decide which agents you want to ask to take the action necessary to infect or be infected. For that, I suggest using the "with" primitive that allows you to create a subset of the agentsets for which it makes sense to check if they can be infected. humans with [susceptible? = true and infected? = false]

After that you can ask this group to check for the conditions necessary to become infected themselves. if any? mosquitos-here with [infected? = true] [set infected? true]

I suggest doing this separately for both humans and mosquitos as your conditions might differ for both. Combined, your code could look something like this:

to go
  ask humans
  [
    set heading  random 360
    forward random 2
      ]
  
  ask mosquitos
  [
    set heading  random 360
    forward random 2
      ]  
  
  ask humans with [susceptible? = true and infected? = false] [
    if any? mosquitos-here with [infected? = true] [set infected? true set color red]
]
  
  ask mosquitos with [susceptible? = true and infected? = false] [
    if any? humans-here with [infected? = true] [set infected? true set color red]
]
  
  tick
end

If infection happens in a symmetric way, you could also use something like the following but I wouldn't suggest it since I assume you want some distinction between humans and mosquitos

  ask turtles with [susceptible? = true and infected? = false] [
    let my-breed breed
    if any? turtles-here with [infected? = true and breed != my-breed] [set infected? true set color red]
]