Ok, I've got 4 images of hearts. One with 3 one with 2, 1, 0. I want to make it so that when the variable "health" is at 1 it shows 1 heart, when at 2 it shows 2 hearts,etc. How would I do this?
tallyaka wrote ...
2012/3/18
Health Hearts
The easiest way is to set up an array of images, like so:
Just change the filenames appropriately, and when the health value changes, call the updateImage method.
GreenfootImage[] hearts = { new GreenfootImage("no_hearts.jpg"),
new GreenfootImage("one_heart.jpg"),
new GreenfootImage("two_hearts.jpg"),
new GreenfootImage("three_hearts.jpg") }
int health = 3;
private void updateImage()
{
setImage(hearts[health]);
}Ok, I did this but how do I add the hearts into the scenario. Just using getWorld().addObject(hearts, int, int); doesn't seem to work.
The code I provided should be in an Actor sub-class, best called 'Hearts'.
The constructor for the Hearts class would simply be
and you could add this method
Then, in the world class constructor, add the Heart object as follows:
with the world class variable hearts defined as
In your player actor class, when loses health, get a reference to your world sub-class (WorldSubClass) to access the Hearts object with
public Hearts()
{
updateImage();
}public void adjustHearts(int adjustmentValue)
{
health += adjustmentValue;
if (health > 3) health = 3;
if (health == 0) Greenfoot.stop();
else updateImage();
}addObject(hearts, x, y);
public Hearts hearts = new Hearts();
WorldSubClass worldsubclass = (WorldSubClass) getWorld(); worldsubclass.hearts.adjustHearts(-1);
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