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POHow to refer to an instance from a different class in the current class in Java
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  1. POHow to refer to an instance from a different class in the current class in Java
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    copied!<p>I am working on bounding box collision of a laser colliding with a monster in Java. There is no problem with collision. The problem is the Rectangle object inside the OneEye class is static! </p> <p>Problem 1: This is no problem if one monster was in the game but in my game I will be adding a lot of instances of the Monster class. So my Rectangle object cannot be static if I were to add more than one monster.</p> <p>Problem 2: Note: if Rectangle object is non-static my getter method for Rectangle needs be non-static.</p> <p>But I cannot seem to figure how to fix these two problems.</p> <p>Again, my collision works! It is more of a code design flaw if I were to add different instances of the same class. To sum it all up, how do I refer to an instance from a different class in the current class I am writing code without referring to it in a static context. </p> <p>Here's my code of two classes: Laser class and OneEye Class</p> <pre><code>public class Laser { /* use a bounding box * to test collision detection * */ private Rectangle rect; public void update(long milliseconds) { // surround a bounding box around the laser rect = new Rectangle((int)position.x,(int)position.y,this.getWidth(),this.getHeight()); // collision against the OneEye monster if(rect.intersects(OneEye.getRectangle())) { Game.getInstance().remove(this); } } public class OneEye { /* * use bounding box * for collision * detection */ private static Rectangle rect; public void update(long milliseconds) { // surround a bounding box around the oneEye monster rect = new Rectangle((int)position.x,(int)position.y,this.getWidth(),this.getHeight()); } // can be useful for collision detection public static Rectangle getRectangle() { return rect; } } </code></pre>
 

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