java.lang.Objectgreenfoot.Actor
Counter
public class Counter
A Counter class that allows you to display a numerical value on screen. The Counter is an actor, so you will need to create it, and then add it to the world in Greenfoot. If you keep a reference to the Counter then you can adjust its value. Here's an example of a world class that displays a counter with the number of act cycles that have occurred:
class CountingWorld { private Counter actCounter; public CountingWorld() { super(600, 400, 1); actCounter = new Counter("Act Cycles: "); addObject(actCounter, 100, 100); } public void act() { actCounter.setValue(actCounter.getValue() + 1); } }
Constructor Summary | |
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Counter()
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Counter(java.lang.String prefix)
Create a new counter, initialised to 0. |
Method Summary | |
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void |
act()
Animate the display to count up (or down) to the current target value. |
void |
add(int score)
Add a new score to the current counter value. |
int |
getValue()
Return the current counter value. |
void |
setPrefix(java.lang.String prefix)
Sets a text prefix that should be displayed before the counter value (e.g. |
void |
setValue(int newValue)
Set a new counter value. |
Methods inherited from class greenfoot.Actor |
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addedToWorld, getImage, getIntersectingObjects, getNeighbours, getObjectsAtOffset, getObjectsInRange, getOneIntersectingObject, getOneObjectAtOffset, getRotation, getWorld, getX, getY, intersects, isTouching, move, removeTouching, setImage, setImage, setLocation, setRotation, turn, turnTowards |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Counter()
public Counter(java.lang.String prefix)
Method Detail |
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public void act()
act
in class greenfoot.Actor
public void add(int score)
public int getValue()
public void setValue(int newValue)
public void setPrefix(java.lang.String prefix)