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83 lines
2.1 KiB
83 lines
2.1 KiB
package collider;
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import gameobjects.*;
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import org.apache.logging.log4j.Logger;
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import org.apache.logging.log4j.LogManager;
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/** Collider for round objects */
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public class CircleCollider extends Collider {
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double x;
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double y;
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double vx;
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double vy;
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double r;
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private static Logger logger = LogManager.getLogger(Collider.class);
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/**
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* Constructor which sets the radius to be respected for collisions.
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*
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* @param id String unique name for the collider instance
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* @param o GameObject it belongs to
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* @param radius radius in pixels to use as a size
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*/
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public CircleCollider(String id, GameObject o, double radius) {
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super(id, o);
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this.r = radius;
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}
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/** simple concatenation of all attributes (x,y,r) */
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public String toString() {
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return "circ:" + x + " " + y + "/" + r + " ";
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}
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/**
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* calculates the collission of this with other collider
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*
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* @param _c2 the other collider
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* @return true if a collision was detected
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* @throws Exception in case the math operations are invalid (due to illegal values of x y or
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* radius)
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*/
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public boolean checkCollisionCircCirc(Collider _c2) throws Exception {
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CircleCollider c2 = (CircleCollider) _c2;
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CircleCollider c1 = this;
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logger.trace(c1.x + " " + c1.y + " " + c1.r + " " + c2.x + " " + c2.y + " " + c2.r);
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int kathete1 = (int) (Math.abs(c2.gameobject.getX() - c1.gameobject.getX()));
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int kathete2 = (int) (Math.abs(c2.gameobject.getX() - c1.gameobject.getY()));
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int hypothenuse = (int) (c1.r + c2.r);
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logger.trace(kathete1 + " " + kathete2 + " " + hypothenuse + " ");
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if (((kathete1 ^ 2) + (kathete2 ^ 2)) <= (hypothenuse ^ 2)) {
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logger.trace("Collision");
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return true;
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}
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return false;
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}
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@Override
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public boolean collidesWith(Collider other) {
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// circ circ
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try {
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return checkCollisionCircCirc(other);
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} catch (Exception e) {
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}
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try {
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return other.collidesWith(this);
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} catch (Exception e) {
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}
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throw new RuntimeException("Collider type not implemented!");
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}
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}
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