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HayleyG
HayleyG wrote ...

2012/10/14

Need help changing actor image

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Builderboy2005 Builderboy2005

2012/10/17

#
That is a less than ideal solution though. Not only are you creating a completely new image each time you check, but you also have to compare the images pixel by pixel to see if they are equal.
limefortheworld limefortheworld

2012/10/17

#
I suggest making a static reference greenfootimage, then make copies off the static reference rather than making a completely new image. Also, might I suggest a "frame" variable, and if so, also suggest using the ArrayList to help with the organization. If using the frame system (assuming the frame changes every act),
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import java.util.ArrayList;
 
static ArrayList<GreenfootImage> images = new ArrayList<GreenfootImage>();
private int frame;
 
static public void initialize()
{
images.add(new GreenfootImage("image 1 name"));
images.add(new GreenfootImage("image 2 name"));
...
}
 
public void act()
{
frame ++;
if(frame >= images.size())
{
frame = 0;
}
setImage(images.get(frame));
}
Ensure to run the "initialize" variable once. (I usually do this at the World constructor)
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(Classname).initialize();
This is okay assuming you are not manipulating the images. If not, then substitute setImage(images.get(frame)); with setImage(new GreenfootImage(images.get(frame)));
Builderboy2005 Builderboy2005

2012/10/17

#
That is a lot of work that could be sidestepped simply by keeping track of your current image by using a boolean or int.
limefortheworld limefortheworld

2012/10/18

#
Builderboy2005 wrote...
That is a lot of work that could be sidestepped simply by keeping track of your current image by using a boolean or int.
frame = keeping track of current image I specifically chose the static ArrayList method with the assumption that he will be fielding multiple objects of the class.
Builderboy2005 Builderboy2005

2012/10/18

#
Oh I see, I misunderstood you. For some reason I thought you were proposing a solution that involved saving global static images for the purpose of *comparing* them XD My mistake!
limefortheworld limefortheworld

2012/10/18

#
lulzy lulz Just about all of my games involve this frame mechanics (although it is only with my later works that I implement the static global variables) involving multiple images for actors (alongside the additional framechange variable). But then my stuff isn't as nearly as great as yours...
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