Whenever I tried to run the program, yes the text is moving but it leaves a trace of its last position. Like for example the text "test" is in first positioned at x=50, y=100 then in the next update, the x=50, y=120. The problem is, the last position which is the x=50, y=100 is still in display. I would like to remove the last position of the text every time it updates.
Can you guys help me?
(The j label is in the Action performed method)
This is my core class.
package GAME;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Random;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;
public class GameFrame extends JPanel implements ActionListener{
Image background = Toolkit.getDefaultToolkit().createImage("D:\\SHIPMATH TEXTURES\\simple-water-animation-597-x-800.gif");
Timer mainTimer;
shipPlayer player;
enemyShips enemy;
int level = 5;
int enemyCount = 5;
int numCount = 10;
int y=0;
// arraylists are arrays that has no capacity limit
static ArrayList<Numbers> number = new ArrayList<Numbers>();
static ArrayList<enemyShips> enemies = new ArrayList<enemyShips>();
static ArrayList<Cannons> cannon_balls = new ArrayList<Cannons>();
JLabel numbers;
Random rn = new Random();
public GameFrame() {
// calls the actionPerformed method every 10 milliseconds
mainTimer = new Timer(10, this);
mainTimer.start();
setLayout(null);
setFocusable(true);
player = new shipPlayer(0, 500);
addKeyListener(new KeyAdapt(player));
startGame();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D) g;
g2d.drawImage(background, 0, 0, this);
player.draw(g2d);
repaint();
for(int i=0; i<enemies.size(); i++) {
// the value of 'i' is the location/index used to find the value stored in the ArrayList
enemyShips enemy = enemies.get(i);
enemy.draw(g2d);
}
for(int i=0; i<cannon_balls.size(); i++) {
Cannons cannon = cannon_balls.get(i);
cannon.draw(g2d);
}
}
public void actionPerformed(ActionEvent e) {
player.update();
// where movement of the enemy happens
for(int i=0; i<enemies.size(); i++) {
enemyShips enemy = enemies.get(i);
enemy.update();
}
// Later...
for(int i=0; i<cannon_balls.size(); i++) {
Cannons cannon = cannon_balls.get(i);
cannon.update();
}
/////////////////////////////////////
y++;
numbers = new JLabel("TEST");
numbers.setBounds(200, y, 100, 100);
add(numbers);
////////////////////////////////////
repaint();
}
public static void addEnemy(enemyShips e) {
enemies.add(e);
// stores what the user puts in the enemyShips' object into the ArrayList "enemies"
}
public static void removeEnemy(enemyShips e) {
enemies.remove(e);
// removes what the user inputs from the ArrayList
}
public static ArrayList<enemyShips> getEnemyList() {
return enemies;
}
public static void addNumbers(Numbers n) {
number.add(n);
}
public static void addCannons(Cannons c) {
cannon_balls.add(c);
// stores what the user puts in the Cannons' object into the ArrayList "cannon_balls"
}
public static void removeCannons(Cannons c) {
cannon_balls.remove(c);
// removes what the user inputs from the ArrayList
}
public static ArrayList<Cannons> getCannonsList() {
return cannon_balls;
}
public void startGame() {
// enemyCount = level * 5;
// runs 5 times
for(int x=0; x<enemyCount; x++) {
addEnemy(new enemyShips(rn.nextInt(500), -rn.nextInt(800)));
}
}
}
This is the output of this program. Click here for the output of the program
