Author: UprightPath (posted 2012-07-27 06:26:28, viewed 109 times)
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| import java.util.ArrayList;
public class TurnStateContext {
private ArrayList<TurnState> critters = new ArrayList<TurnState>();
public TurnStateContext() {
}
public void addState(TurnState state) {
if (critters.isEmpty()) {
state.enterState();
}
critters.add(state);
}
public void performAction() {
if (!critters.isEmpty()) {
critters.get(0).performAction();
if (critters.get(0).hasPerformedAction()) {
critters.get(0).exitState();
critters.add(critters.get(0));
critters.remove(0);
critters.get(0).enterState();
}
} else {
System.out.println("Nothing to perform an action on, oh-no!");
}
}
public static void main(String[] args) {
TurnStateContext context = new TurnStateContext();
context.addState(new PlayerTurnState(context));
context.addState(new MobTurnState(context, "Mob 1"));
context.addState(new MobTurnState(context, "Mob 2"));
for (int i = 0; i < 100; i++) {
context.performAction();
}
}
}
public abstract class TurnState {
protected TurnStateContext context;
protected boolean performedAction;
public TurnState(TurnStateContext context) {
this.context = context;
}
public void enterState() {
performedAction = false;
enterStateImplement();
}
protected abstract void enterStateImplement();
public void exitState() {
exitStateImplement();
}
protected abstract void exitStateImplement();
public abstract void performAction();
public boolean hasPerformedAction() {
return performedAction;
}
}
public class PlayerTurnState extends TurnState {
public PlayerTurnState(TurnStateContext context) {
super(context);
}
@Override
protected void enterStateImplement() {
}
@Override
protected void exitStateImplement() {
}
@Override
public void performAction() {
System.out.println("This is where the player takes input!");
this.performedAction = true;
}
}
public class MobTurnState extends TurnState {
private String name;
public MobTurnState(TurnStateContext context, String name) {
super(context);
this.name = name;
}
@Override
protected void enterStateImplement() {
}
@Override
protected void exitStateImplement() {
}
@Override
public void performAction() {
System.out.println("This is where " + name + " is deciding what to do!");
this.performedAction = true;
}
} |
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