Is there an easy way to have an object move across the screen gradually getting bigger?
Gingervitis wrote ...
2013/2/25
Making an object bigger
you could use the Position of your Object and then scale() (in GreenfootImage).
The size would be sth like the right side of your world minus the position of your object and that times a factor.
I tried scaling it, but it didn't work. I think I messed up the code.
1 2 3 4 5 6 7 8 9 10 | public void ifInIntro() { World world; world = getWorld(); if (world instanceof Intro) { GreenfootImage image = getImage(); image.scale(5, 5); } } |
1 2 3 4 5 6 7 8 9 10 11 12 | public void ifInIntro() { World world; world = getWorld(); if (world instanceof Intro) { GreenfootImage image = getImage(); int percentage = (getX()*100 /world.getWidth) ; int scale =5*percentage; image.scale(scale, scale); } } |
If minSize is the smallest size at left side of screen and maxSize is the largest size at right side of screen then
It is neccessary to have line 3 in the code because scaling the same image multiple times will stretch the image non-uniformly. You can replace 'baseImage' with a filename or a reference name to the initial image before scaling.
1 2 3 4 5 | double factor = (double)getX()/(double)getWorld().getWidth();int size = minSize + (int)(factor*(maxSize-minSize));GreenfootImage image = new GreenfootImage(baseImage);image.scale(size, size);setImage(image); |
Thank you very much for the help.
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