由于某种原因，检查冲突（是否存在相同坐标的对象）在几秒钟内使java崩溃

Question

SOLVED I am working on my own java game engine that has it's own "physics engine", for some reason my new way of checking collisions crashes java?

I am fairly new on java, and I have no idea what is going on, I don't see any problem in the code, nor do I think I would see it.

the complete source is available on github

the function in gameobject.java:

private void checkAdvancedCollisions(objectManager o, gameObject i){
        if(!i.masterParent.engine_collisions){
            return;
        }
        LinkedList<String> ignore = tag;
        for(gameObject ga : children){
            ignore.addAll(ga.tag);
        }
        for(int xc : new Range(size)){
            for(int yc : new Range(size)){
                if(o.colliding(Math.round(i.x + xc), Math.round(i.y + yc), ignore)){
                    point1(i, o.collidingGA(xc, yc, ignore));
                }
                else if(o.colliding(Math.round(i.x + xc), Math.round(i.y + yc + 1), ignore)){
                    point2 = true;
                    point2(i, o.collidingGA(Math.round(i.x + xc), Math.round(i.y + yc + 1), ignore));
                }
                else{
                    colliding = false;
                    point2 = false;
                }
            }
        }
    }

the actual checking in objectmanager.java (should work fine):

public boolean colliding(int x, int y, LinkedList<String> ignore){
        for(gameObject i : object){
            if(i.getTag().contains("cursor") || i.getTag().containsAll(ignore)){}
            else{
                if((round(i.x) == x && round(i.y) == y)){
                    return true;
                }
            }
        }
        return false;
    }
    public gameObject collidingGA(int x, int y, LinkedList<String> ignore){
        for(gameObject i : object){
            if(i.getTag().contains("cursor") || i.getTag().containsAll(ignore)){}
            else{
                if((round(i.x) == x && round(i.y) == y)){
                    return i;
                }
            }
        }
        return null;
    }

and the java completely just stops when using this function, no error messages or anything

Answer 1

Thanks for Joop Eggen for pointing out that the ignore list may contain endless. The code was to add all tags of the children to the list, while all gameobjects are children of themselves, causing an endless list.