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Scenario

This is a configuration file editor designed to choose parameter values before launching Evolife simulations.

Its use is rather intuitive. You may click directly on values you want to change, or navigate with arrows and use the [F2] key to edit values.

Pay attention to explanations displayed in this panel.

Scenario ==> CurrentScenario

Scenario ==> CurrentScenario ==> ScenarioName --> Path

Simulmates emerging path formation

Scenario ==> CurrentScenario ==> ScenarioFileName --> Walker.evo

Simulation

Simulation ==> DisplayPeriod --> 5

Display period

Simulation ==> TimeLimit --> 10000

Max number of simulation steps

Simulation ==> ApplicationDir --> .

Directory where the simulation can be found

Simulation ==> Target --> Walker.py

Programme to be executed

Simulation ==> RunConfigFile --> _Params.evo

Parameter values that will be read by the programme

Simulation ==> Title --> Evolife_Walker

Name of the present Configuration Editor

Simulation ==> Icon --> Walker.gif

local path to window icon

Ecology

Ecology ==> PopulationSize --> 1

total number of walkers

Ecology ==> Landscape

Landscape on which path will be found

Ecology ==> Landscape ==> Ground --> Landscape_2.png

Image showing ground

Ecology ==> Landscape ==> Altitudes --> landscape_2.dat

Array giving altitudes on ground (may have lower resolution than ground image

Ecology ==> Landscape ==> Startpoint --> 5x5

Start point with format 20x30 where 20 and 30 are in % of width and height

Ecology ==> Landscape ==> Endpoint --> 95x95

End point with format 20x30 where 20 and 30 are in % of width and height

Ecology ==> Behaviour

Agents' behaviour depends on three parameters.

  • Target attractiveness (TA)
  • Pheromon attractiveness (PA)
  • Slope aversion (SA)

  • Preference = TA + PA*pheromone - SA*slope

    Ecology ==> Behaviour ==> TargetAttractiveness --> 6

    Target attractiveness

    Ecology ==> Behaviour ==> PheromoneAttractiveness --> 4

    Pheromone attractiveness

    Ecology ==> Behaviour ==> SlopeAversion --> 3

    Aversion to slope

    Ecology ==> Behaviour ==> SniffingDistance --> 3

    distance from which pheromone is perceived

    Ecology ==> Behaviour ==> Exploration --> 2

    Probability (in %) that the walker moves randomly

    Ecology ==> Noise --> 0

    Additive noise (in %)

    Ecology ==> Pheromone

    Pheromon is laid down eventually along the path, depending on two parameters:

  • Global path distance (GD)
  • Cumulative slope (CS)
  • Ecology ==> Pheromone ==> Deposit --> 10000

    amount of pheromone that is laid down on the path after completion

    Ecology ==> Pheromone ==> ForwardDeposit --> 10

    amount of pheromone that is laid down when going forward

    Ecology ==> Pheromone ==> DepositVariation --> 80

    Variation of deposit when path is longer or shorter than previous one (in %)

    Ecology ==> Pheromone ==> Evaporation --> 1

    absolute amount of pheromone decrease per time unit

    Ecology ==> Pheromone ==> Saturation --> 60000

    maximum amount of pheromon that a cell can carry