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package model;
import controller.Simulation;
import datastruct.Coordinate;
* {@link CellularAutomatonSimulation} instances run <i>The Game of Life</i>.
*
* @param <S> The type of state used in the simulation.
public class CellularAutomatonSimulation<S extends State<S>>
private final Cell<Integer> generationNumber = new Cell<>(0);
private final CellularAutomaton<S> automaton;
private final Random generator;
* Creates a new {@link CellularAutomatonSimulation} instance for a given automaton.
* @param automaton A description of the {@link CellularAutomaton}.
* @param generator The {@link Random} instance used for random state generation.
public CellularAutomatonSimulation(CellularAutomaton<S> automaton, Random generator) {
this.automaton = automaton;
this.grid = new Matrix<>(
automaton.numberOfColumns(),
automaton.numberOfRows(),
new ConstantCellInitializer<>(automaton.defaultState())
);
this.generator = generator;
/**
* Returns the {@link Cell} at the specified coordinate.
*
* @param coordinate The coordinate of the cell to retrieve.
* @return The cell at the specified coordinate.
*/
public Cell<S> at(Coordinate coordinate) {
return this.grid.get(coordinate);
this.generationNumber.set(this.generationNumber.get()+1);
Matrix<S> nextStates = this.nextGenerationMatrix();
for (Coordinate coordinate : this.grid.coordinates()) {
this.at(coordinate).set(nextStates.get(coordinate));
}
}
/** Computes the {@link Matrix} of states obtained after a single step of updates
* of the simulation.
*
* @return the states of each cell after one generation
*/
private Matrix<S> nextGenerationMatrix() {
this.grid.width(),
this.grid.height(),
new NextGenerationInitializer<>(this)
);
S oldState = this.grid.get(coordinate).get();
this.at(coordinate).set(oldState.next());
}
@Override
public void copy(Coordinate source, Coordinate destination) {
S state = this.at(source).get();
this.at(destination).set(state);
}
@Override
public Color getColor(Coordinate coordinate) {
public void setChangeListener(Coordinate coordinate, Runnable listener) {
this.at(coordinate).addOnChangeListener(
(oldValue, newValue) -> listener.run()
@Override
public void setGenerationNumberChangeListener(OnChangeListener<Integer> listener){
this.generationNumber.addOnChangeListener(listener);
for (Cell<S> cell : this.grid) {
cell.set(this.automaton.defaultState());
}
for (Cell<S> cell : this.grid) {
cell.set(this.automaton.randomState(generator));
}
this.generationNumber.set(0);