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PredatorPrey_step9

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RoiArthurB edited this page Sep 11, 2023 · 11 revisions

9. Stopping condition

This 9th step illustrates how to use the pause action to stop a simulation.

Formulation

  • Addition of a stopping condition for the simulation: when there is no more prey or predator agents, the simulation stops

Model Definition

We add a new reflex that stops the simulation if the number of preys or the number of predators is zero.

global {
    ...
    reflex stop_simulation when: (nb_preys = 0) or (nb_predators = 0) {
        do pause ;
    } 
}

Complete Model

https://github.com/gama-platform/gama/blob/GAMA_1.9.2/msi.gama.models/models/Tutorials/Predator%20Prey/models/Model%2009.gaml

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