Class Model

java.lang.Object

Model

public class Model
extends java.lang.Object

Main class for an agent-based model.

The model has an Environment, containing raster data.

It also has a series of Agent objects.

Each iteration of the model, the agent's run method is called.

The model also implements a model-wide stopping criterion.

Version:

1.0

Author:

Andy Evans

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.ArrayList<Agent>	agents List of all agents.
private int	height Default environment height.
private int	numberOfAgents Number of agents in model.
private int	numberOfIterations Number of timesteps in model.
private int	width Default environment width.
private Environment	world Environment to store raster data.

Constructor Summary

Constructors

Constructor and Description
Model() Model constructor.

Method Summary

Modifier and Type	Method and Description
private void	buildAgents() Makes the agents.
private void	buildWorld() Makes the world with initial values.
static void	main(java.lang.String[] args) Just calls the constructor.
private void	runAgents() Runs the agents.
private boolean	stoppingCriteriaMet() Checks stopping criteria.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

numberOfIterations

private int numberOfIterations

Number of timesteps in model.

numberOfAgents

private int numberOfAgents

Number of agents in model.

width

private int width

Default environment width.

height

private int height

Default environment height.

agents

private java.util.ArrayList<Agent> agents

List of all agents. Note that the use of the Agent interface allows for heterogeneous agents.

world

private Environment world

Environment to store raster data.

Constructor Detail

Model

public Model()

Model constructor.

Method Detail

buildWorld

private void buildWorld()

Makes the world with initial values.

buildAgents

private void buildAgents()

Makes the agents.

runAgents

private void runAgents()

Runs the agents. Iterates through numberOfIterations. Randomises the agent order.

stoppingCriteriaMet

private boolean stoppingCriteriaMet()

Checks stopping criteria. Returns true if stopping criteria met, false otherwise, including where the criteria can't be checked. Here the stopping criterion is that there is nothing left in the environment.

Returns:

whether the stopping criteria have been met

main

public static void main(java.lang.String[] args)

Just calls the constructor.

Parameters:

args - String sequence. Unused.