Question

I have a method caller addColisionBox and when i call it and setting values to it i get nullpointer at the place im calling it.. I will show some code:

    public void addCollisionBox(int x, int y, int arrayNum)
    {
        //Creating a new rectangle at the x & y cord passed in
        rectangle[arrayNum] = new Rectangle(x, y, R_Width, R_Height);
    }

And i created inside another class like this:

CollisionHandler collision;
....
//CurrentX and CurrentY position to pass into addCollisionBox method and at the array number i
collision.addCollisionBox(currentX, currentY, i);

And it says in a message box that Visual C# express give out that: “Object reference not set to an instance of an object.”

Answer 1

You didn’t initalize your collision object. You should have something similar to the following. e.g.

CollisionHandler collision = new CollisionHandler();

…or how ever you are creating/grabbing an instance of your object prior to using it.