Java tutorial
//package com.java2s; public class Main { public static boolean isHit(int left1, int top1, int w1, int h1, int left2, int top2, int w2, int h2) { int x1 = left1 + w1 / 2; int y1 = top1 + h1 / 2; int x2 = left2 + w2 / 2; int y2 = top2 + h2 / 2; if (Math.abs(x1 - x2) < (w1 / 2 + w2 / 2) - 10 && Math.abs(y1 - y2) < (h1 / 2 + h2 / 2) - 10) { return true; } return false; } }