Good night you two.
@groengeel Just hope I didn't figure that out first then.
groengeel wrote ...
2012/11/17
New Greenfoot4Android discussion
@erdelf
I'v checked your source code.
The problem is you renamed the start folder to src. Do not rename the start folder, any change to this folder or MainActivity class would cause unexpected problem, the only thing to do there is setWorld(). If you want to change the name of your App, just make change in string.xml as I said is enough.
Then the name of your pics seems didn't match with your code, you can figure that out in debug mode as I has updated.
So just download the newest code from the demo scenario(dropbox hasn't updated yet), do not change the start package, turn on the debug mode, and thing would be much easier.
After all, it seems that you are using many pics in the scenario, I'm not sure if Greenfoot4Android could manage so many pics. That means it's possible that your scenario could be a bit slow.
It seems to work quite well actually:
The above code shows up wrong! :(
Click on "view plain" to see the correct code.
Upupzealot: i'll mail you the code.
/**
* Check whether this object intersects with another given object.
*
* @return True if the object's intersect, false otherwise.
*/
protected boolean intersects(Actor actor){
int ax = getX() - getImage().getWidth()/2;
int ay = getY() - getImage().getHeight()/2;
List<String> ac = new ArrayList();
for(int ix=0; ix<getImage().getWidth(); ix++) {
int dx = ax+ix;
for(int iy=0; iy<getImage().getHeight(); iy++) {
int dy = ay+iy;
if (actor.isContain(dx,dy)) {
return true;
}
}
}
return false;
}
it still don't work rotation...
BTW, how do you feel with the update. I think it makes things much easier since exception could be caught now.
Did you test it?
I believe isContain takes care of that:
My code just draws a straight up box around the other object (to explain it simple) and get's all the coordinates in it. For my plane scenario it works, as far as I can see now, quite good.
boolean isContain(float px, float py){
float distance = distanceTo(px, py);
double degrees = degreesTo(px, py);
float dx = distance * (float)Math.cos(Math.toRadians(degrees - (double)rotation));
float dy = distance * (float)Math.sin(Math.toRadians(degrees - (double)rotation));
RectF rect = new RectF(-getWidth() / 2, -getHeight() / 2, getWidth() / 2, getHeight() / 2);
return rect.contains(dx, dy);
}
boolean isContain(PointF point){
return isContain(point.x, point.y);
}After a few acts with nothing happening the game crashes, am I the only one experiencing that?
turn on the debug mod then
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