Class Collision

lewispoll

Hey there,

Was working on my super mario game and I am quite confused how to go about collision detection between 2 classes. This is because when I enter the xpos of a class and the xpos of the other, one will be unrecognizable because it is in another class.

Any ideas?

GoToLoop

This online example got class Bullet receiving an Asteroid object in method checkHit():

http://studio.processingtogether.com/sp/pad/export/ro.9K-kjhuONcJDZ/latest

PhiLho

There is no confusion, as you must prefix each field with the name of the object they belong to. Or, if you are in a class, the field without prefix belongs to the current class:

if (mario.xpos > mushroom.xpo) // ...

or in the Mario class:

if (xpos > mushroom.xpos) // ...

lewispoll

Thankyou! :)

}
if (xPos == Goomba.xpos && yPos == Goomba.ypos) {
  GAMEOVER = true;
}

I wrote this in the mario class in void move() and it says cannot make a static reference to the non-static field Goomba.xpos, any ideas?

lewispoll

Anyone? Extremely urgent D:

GoToLoop

You need a variable holding the reference for a Goomba object in order to access its members!
Take a look at checkHit() from my online example link above! 3:-O

PhiLho

Don't mix up objects (instances of classes, created with new), and classes (the declaration / blueprint of all objects).

In Java, you can call ClassName.method() or use ClassName.field, but only for a special kind of methods and fields, called static methods / fields. And this style isn't "natural" in Processing.