i have a money counter which is in one of the actors, how can i get another actor also add to the same counter
Stephon231 wrote ...
2012/9/30
actor/counter
You can make one public money counter in ActorA and access it through ActorB.
And in ActorB, you can write :
// This is in ActorA static int money_counter;
ActorA.money_counter = 0;
what would the code be to add to the counter(Money = money + 5)?
If you want to add it from ActorB :
ActorA.money_counter = ActorA.money_counter + 5;
nooby123, you're showing how to add a counter to one actor *class*, not just one particular actor. (It might work in this case - depending on what's required - but it is, in general, not good design).
Stephon231, you should look at tutorial #6.
what if the counter's code is Counter counter = 0;
'Counter counter' in itself tells the compiler that you have a variable call 'counter' and it is to hold a 'Counter' object. You cannot assign an 'int' or any other type to a variable of 'Counter' type; it must be an instance of the 'Counter' class.
You can, however have an 'int' variable within the 'Counter' class. An example of a simple Counter class follows:
Then, lets say you had an actor that will earn points.
The above will work, provided you have exactly one Counter object, and it must be in the world. If you happen to have more, it would be best to have references to each one. If they are both for different actors of the same type (say, player1 and player2), it would be best to have the references in the Player class (so each player has a reference to their own Counter object).
import greenfoot.*;
import java.awt.Color;
public class Counter extends Actor
{
int value = 0;
public Counter()
{
updateImage();
}
public void add(int amount)
{
value += amount;
updateImage();
}
public int getValue()
{
return value;
}
private void updateImage()
{
setImage(new GreenfootImage("Score: " + value, 24, Color.black, new Color(0, 0, 0, 0)));
}
}// in the actor class act method (or method it calls)
if (whatever == true) addToCounter(10);
// and add the following method
private void addToCounter(int addAmount)
{
WorldName world = (WorldName) getWorld();
Counter counter = (Counter) world.getObjects(Counter.class).get(0);
counter.add(addAmount);
}You need to login to post a reply.