@Override
public boolean collidesWith(ICollidable obj) {
if (this == obj) {
return false;
}
if (Game.debug) {
if (obj == null) {
System.out.println("Welll...something else went wrong");
}
}
// int r1 = (int)this.getX() + this.getCollisionBoxWidth();
// int l1 = (int)this.getX();
// int t1 = (int)this.getY();
// int b1 = (int) this.getY() + this.getCollisionBoxHeight();
//
// int r2 = (int)obj.getX() + obj.getCollisionBoxWidth();
// int l2 = (int)obj.getX();
// int t2 = (int)obj.getY();
// int b2 = (int) obj.getY() + obj.getCollisionBoxHeight();
//
//
// if ((r1 < l2) || (l1 > r2) || (t2 < b1) ||(t1 < b2)){
// return false;
// }
//
// return true;
boolean result = false;
Point thisCenter = getCenter();
Point otherCenter = obj.getCenter();
int thisCenterX = (int) (thisCenter.getX() + this.getCollisionRadius()); // find centers
int thisCenterY = (int) (thisCenter.getY() + this.getCollisionRadius());
int otherCenterX = (int) (otherCenter.getX() + obj.getCollisionRadius());
int otherCenterY = (int) (otherCenter.getY() + obj.getCollisionRadius());
// find dist between centers (use square, to avoid taking roots)
int dx = thisCenterX - otherCenterX;
int dy = thisCenterY - otherCenterY;
int distBetweenCentersSqr = (dx * dx + dy * dy);
// find square of sum of radii
int thisRadius = this.getCollisionRadius();
int otherRadius = obj.getCollisionRadius();
int radiiSqr =
(thisRadius * thisRadius + 2 * thisRadius * otherRadius + otherRadius * otherRadius);
if (distBetweenCentersSqr <= radiiSqr) {
result = true;
}
return result;
}
/**
* returns how much the two objects circles overlap
*
* @param obj
* @return
*/
public int getCollisonOvelap(ICollidable obj) {
Point thisCenter = getCenter();
Point otherCenter = obj.getCenter();
int thisCenterX = (int) (thisCenter.getX()); // + this.getCollisionRadius()); // find centers
int thisCenterY = (int) (thisCenter.getY()); // + this.getCollisionRadius());
int otherCenterX = (int) (otherCenter.getX()); // + obj.getCollisionRadius());
int otherCenterY = (int) (otherCenter.getY()); // + obj.getCollisionRadius());
// find dist between centers (use square, to avoid taking roots)
int dx = thisCenterX - otherCenterX;
int dy = thisCenterY - otherCenterY;
int distBetweenCentersSqr = (dx * dx + dy * dy);
// find square of sum of radii
int thisRadius = this.getCollisionRadius();
int otherRadius = obj.getCollisionRadius();
int radiiSqr =
(thisRadius * thisRadius + 2 * thisRadius * otherRadius + otherRadius * otherRadius);
if (distBetweenCentersSqr <= radiiSqr) {
// System.out.println(radiiSqr - distBetweenCentersSqr);
return (int) Math.sqrt(radiiSqr - distBetweenCentersSqr);
}
return 0;
}
