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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.*;
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public class Panel00 extends JPanel {
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Timer t = new Timer(1, new Listener());
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int ctr = 0;
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double G = 0.1; //Gravitational Constant
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final int xpos = 280;
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double[] p2d = {280, 200};
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double[] v2d = {0, 0};
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int points = 0;
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int lives = 0;
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int sides = 13;
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double snorm = 400;
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double sd = 450;
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double sv = 0;
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boolean setlock = false;
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boolean rdown, ldown;
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double paddle = 130;
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double rtheta = 0;
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double ltheta = 0;
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int preset[][] = {
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{0, 400, 135, 450,1}, //right paddle
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{135, 450, 270, 400,1}, //left paddle
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{270, 0, 300, 20, 1}, //first bouncey thingy
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{291, 0, 291, 500, 1}, //right wall
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{-1, 0, 270, 0, 1}, //top wall
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{0, -1, 0, 500, 1} //left wall
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};
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int[][] balls = {
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{80, 80, 30, 50},
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{230, 280, 20, 200},
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{50, 200, 25, 100},
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{200, 100, 10, 500}
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};
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int lines[][] = new int[100][5];
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public Panel00(){
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super();
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t.start();
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addKeyListener(new Key());
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setFocusable(true);
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for(int i = 0; i < preset.length; i++){
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lines[i] = preset[i];
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}
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int plen = preset.length;
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int ct = 0;
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for(int k = 0; k < balls.length; k++){
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int px = balls[k][0], py = balls[k][1], radius = balls[k][2];
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for(double i = 0; i < 2 * Math.PI; i+= 2 * Math.PI/ sides){
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ct++;
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lines[plen + ct][0] = px + (int) (radius * Math.cos(i));
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lines[plen + ct][1] = py + (int) (radius * Math.sin(i));
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lines[plen + ct][2] = px + (int) (radius * Math.cos(i - 2 *Math.PI / sides));
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lines[plen + ct][3] = py + (int) (radius * Math.sin(i - 2 * Math.PI / sides));
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}
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}
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}
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private class Listener implements ActionListener {
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public void actionPerformed(ActionEvent e){
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repaint();
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}
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}
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public void paintComponent(Graphics g){
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super.paintComponent(g);
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v2d[1] += G;
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p2d[1] += v2d[1];
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p2d[0] += v2d[0];
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if(p2d[1] > 1000){
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p2d[0] = 280;
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p2d[1] = 200;
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v2d[0] = 0;
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v2d[1] = 0;
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lives++;
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}
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if(p2d[0] == 280 && p2d[1] > sd){
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p2d[1] = sd;
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v2d[1] = Math.min(v2d[1], sv);
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}
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if(setlock == false){
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sv *= 0.95; //the dampening coefficient for the springiness
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sv -= (sd - snorm)/30;
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sd += sv;
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}
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double rc = 0.1;
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if(rdown){
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rtheta = Math.max(-0.5, rtheta - rc);
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}else{
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rtheta = Math.min(0.5, rtheta + rc);
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}
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if(ldown){
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ltheta = Math.max(-0.5, ltheta - rc);
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}else{
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ltheta = Math.min(0.5, ltheta + rc);
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}
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lines[0][2] = lines[0][0] + (int) (Math.cos(ltheta) * paddle);
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lines[0][3] = lines[0][1] + (int) (Math.sin(ltheta) * paddle);
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lines[1][0] = lines[1][2] + (int) (-Math.cos(rtheta) * paddle);
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lines[1][1] = lines[1][3] + (int) (Math.sin(rtheta) * paddle);
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int rX = (int) p2d[0];
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int rY = (int) p2d[1];
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int r = 10;
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g.setColor(Color.blue);
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g.drawArc(rX - r, rY - r, 2 * r, 2 * r, 0, 360);
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g.setColor(Color.black);
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for(int i = 0; i < lines.length; i++){
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int x1 = lines[i][0],
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y1 = lines[i][1],
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x2 = lines[i][2];
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double y2 = lines[i][3] + 0.0001;
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if(i > preset.length){
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g.setColor(Color.red);
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}
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g.drawLine(x1, y1, x2, (int) Math.round(y2));
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double bmag = Math.sqrt(v2d[0] * v2d[0] + v2d[1] * v2d[1]);
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double lineslope = ((double)(x2 - x1))/((double)(y2 - y1));
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double ballslope = v2d[0] / v2d[1];
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//System.out.println(ballslope + " " + lineslope);
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//xpos * ballslope + p2d[1] = xpos * lineslope + y1;
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double binter = p2d[0] - ballslope * p2d[1];
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double linter = x1 - lineslope * y1;
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double y = (binter - linter)/(lineslope - ballslope);
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double sx = y * ballslope + binter;
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//double qx = y * lineslope + linter;
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double la = Math.atan2(y2 - y1, x2 - x1);
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double ba = Math.atan2(v2d[1], v2d[0]);
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double da = 2 * la - ba;
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//System.out.println(sx + " " + y);
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/*
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g.drawLine((int)sx, (int)y, (int)p2d[0], (int)p2d[1]);
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g.fillRect((int)sx - 2, (int)y - 2, 4, 4);
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g.drawLine((int)p2d[0], (int)p2d[1], (int) (p2d[0] + Math.cos(da) * 100), (int)(p2d[1] + Math.sin(da) * 100));
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//*/
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if(sx >= Math.min(x2, x1) && sx <= Math.max(x1, x2) &&
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Math.min(y1, y2) <= y && Math.max(y1, y2) >= y){
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double interdist = Math.sqrt(Math.pow(sx - p2d[0],2) + Math.pow(y - p2d[1],2));
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double tiny = 0.0001;
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double futuredist = Math.sqrt(Math.pow(sx - (p2d[0] + Math.cos(ba) * tiny),2) + Math.pow(y - (p2d[1] + Math.sin(ba) * tiny),2));
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if(interdist <= bmag + r && futuredist < interdist){
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//System.out.println("Carl Sagan" + i); //this is a pun because he wrote a book called Contact
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if(i > preset.length){
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int ball = (int) Math.floor((i - preset.length)/sides);
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//System.out.println(balls[ball][2]);
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points += balls[ball][3] * bmag;
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}
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v2d[0] = Math.cos(da) * bmag;
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v2d[1] = Math.sin(da) * bmag;
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}
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}
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}
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g.setColor(Color.black);
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//System.out.println(sx + " " + qx);
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//System.out.println(ballslope + " " + lineslope);
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//double slope = Math.atan2(v2d[1], v2d[0]);
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//g.drawLine((int) p2d[0], (int) p2d[1], (int) (p2d[0]+10*v2d[0]), (int) (p2d[1]+10*v2d[1]));
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g.fillRect(xpos - 5, (int)sd + 10, 10, 20);
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g.drawString("Score: " + points + " Resets: " + lives, 10, 15);
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}
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private class Key extends KeyAdapter {
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public void keyPressed(KeyEvent e){
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if(e.getKeyCode() == KeyEvent.VK_DOWN){
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setlock = true;
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sd += 2;
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}
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if(e.getKeyCode() == KeyEvent.VK_LEFT){
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ldown = true;
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}
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if(e.getKeyCode() == KeyEvent.VK_RIGHT){
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rdown = true;
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}
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}
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public void keyReleased(KeyEvent e){
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setlock = false;
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if(e.getKeyCode() == KeyEvent.VK_LEFT){
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ldown = false;
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}
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if(e.getKeyCode() == KeyEvent.VK_RIGHT){
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rdown = false;
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}
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}
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}
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