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Java: How do you access a variable in another class (same package) without creating a new instance variable?
Long story short: I'm making a platform game as a project and I'm using a game engine that requires collision detection to be done in a separate class, with predefined parameters. I want this class -- let's call it "Collision" -- to access and change a boolean variable (called "onGround") in my "Game" class.
I've seen it done, but I don't remember the syntax... I think it went something like:
((Class) something).variable = value;
Thanks for the help!
-- Derek
Bonus Question: What is the proper terminology for this technique?
you have an import statement at the top.
your class Collision, your class Game both have...
package org.derek.spiffygame; // or something like that
import Collision.*;
-----------------
But, you don't have vars or functions belonging to Objects until runtime. Period.
To gain access to the vars in memory will take an Interface.
interface Collision{
public boolean intersect( Rectangle r );
public void hit();
}
class Game implements Collision;
class Warplane implements Collision;
and if you have an IDE, it will show you the code you have to add from that point. Basically, Game looks through an array of type Warplane to determine collision. As soon as it finds one, it breaks the loop.
If you don't want to use Interface, Collision has to be an arg in class Warplane constructor.
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