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Canvas won`t paint 2.0
Joined: 17 Apr 2004
Posts: 28
Canvas won`t paint 2.0
I changed my canvas to a JPanel and changed the paint method to
paintComponent, but now my sprites won`t paint. The paintComponent
method is not even being called. Is there anything else wrong with my
code?
-Michael Sullivan-
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MainBattle extends JFrame
{
public static Battle battle;
public MainBattle()
{
this.setSize(600, 600);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.show();
Ally us[] = new Ally[4];
us[0] = new Ally(0, "Michael");
us[1] = new Ally(1, "Fox");
us[2] = new Ally(3, "Fawn");
us[3] = new Ally(4, "Sierra");
AllyParty party = new AllyParty(us);
Container pane = getContentPane();
battle = new Battle(party);
battle.setVisible(true);
pane.add(battle);
setContentPane(pane);
this.addKeyListener(battle);
// battle.doBattle();
}
public static void main(String args[])
{ new MainBattle(); }
}
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
class Battle extends JPanel implements KeyListener
{
AllyParty ap;
boolean showMenu = false;
EnemyParty ep;
Graphics screen;
Image allyPic[], enemyPic[];
int enemyCount;
int turn[];
Random rand;
public Battle (AllyParty allyparty)
{
/*Initial Canvas subclass setup*/
this.setSize(600, 600);
this.setBackground(Color.black);
/*Create our ally party*/
ap = new AllyParty();
ap = allyparty;
/*Create randomizer and random number variable*/
long seed = System.currentTimeMillis();
rand = new Random(seed);
/*Use rand to select a number of enemies*/
enemyCount = rand.nextInt(12) + 1;
enemyCount = 12; //TEMP
ep = new EnemyParty(enemyCount);
/*Create the individual enemies in ep and place them*/
for (int i = 0; i < enemyCount; i++)
{
ep.enemy[i] = new Enemy(1);
}
/*Initialize images and set them to their starting values*/
allyPic = new Image[4];
enemyPic = new Image[enemyCount];
for (int i = 0; i < 4; i++)
{
allyPic[i] = ap.ally[i].getStandPic();
}
for (int i = 0; i < enemyCount; i++)
{
enemyPic[i] = ep.enemy[i].getImage();
}
/*Set battle placement*/
ap.setPos(0);
ep.setPos(0);
/*Temporary Section*/
findTurns();
repaint();
}
public void findTurns()
{
int total = ep.getEnemyCount() + 4; //Enemies + allies
int used[] = new int[total];
turn = new int[total];
int next = rand.nextInt(total);
for (int j = 0; j < total; j++)
used[j] = -1;
for (int j = 0; j < total; j++)
{
for (int k = 0; k < j; k++)
{
if (used[k] == next)
{
k = -1;
next = rand.nextInt(total);
}
}
turn[j] = next;
used[j] = next;
}
}
public void paintComponenet (Graphics g)
{
super.paintComponent(g);
for (int i = 0; i < 4; i++)
{
System.out.println("Painting ally #" + i);
g.drawImage(allyPic[i], ap.ally[i].getXPos(),
ap.ally[i].getYPos(), this);
}
for (int i = 0; i < enemyCount; i++)
{
System.out.println("Painting enemy #" + i);
g.drawImage(enemyPic[i], ep.enemy[i].getXPos(),
ep.enemy[i].getYPos(), this);
}
System.out.println("Screen painted in paint method");
}
public void keyPressed (KeyEvent k) {}
public void keyReleased (KeyEvent k) {}
public void keyTyped (KeyEvent k) {}
}
Joined: 17 Apr 2004
Posts: 28
Canvas won`t paint 2.0
Please ignore my post earlier today. In it I said that paintComponent
wasn`t being called. That was because the method name was misspelled in
my code. I`ve corrected it and I tested if it could use
Graphics.drawString. That worked. I can`t get it to draw Images
though. Below is my code. Please help!
-Michael Sullivan-
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
class Battle extends JPanel implements KeyListener
{
AllyParty ap;
boolean showMenu = false;
EnemyParty ep;
Graphics screen;
Image allyPic[], enemyPic[];
int enemyCount;
int turn[];
Random rand;
public Battle (AllyParty allyparty)
{
/*Initial Canvas subclass setup*/
this.setSize(600, 600);
this.setPreferredSize(new Dimension(800, 600));
this.setBackground(Color.black);
/*Create our ally party*/
ap = new AllyParty();
ap = allyparty;
/*Create randomizer and random number variable*/
long seed = System.currentTimeMillis();
rand = new Random(seed);
/*Use rand to select a number of enemies*/
enemyCount = rand.nextInt(12) + 1;
enemyCount = 12; //TEMP
ep = new EnemyParty(enemyCount);
/*Create the individual enemies in ep and place them*/
for (int i = 0; i < enemyCount; i++)
{
ep.enemy[i] = new Enemy(1);
}
/*Initialize images and set them to their starting values*/
allyPic = new Image[4];
enemyPic = new Image[enemyCount];
for (int i = 0; i < 4; i++)
{
allyPic[i] = ap.ally[i].getStandPic();
}
for (int i = 0; i < enemyCount; i++)
{
enemyPic[i] = ep.enemy[i].getImage();
}
/*Set battle placement*/
ap.setPos(0);
ep.setPos(0);
/*Temporary Section*/
findTurns();
repaint();
}
public void update(Graphics g)
{}
public void findTurns()
{
int total = ep.getEnemyCount() + 4; //Enemies + allies
int used[] = new int[total];
turn = new int[total];
int next = rand.nextInt(total);
for (int j = 0; j < total; j++)
used[j] = -1;
for (int j = 0; j < total; j++)
{
for (int k = 0; k < j; k++)
{
if (used[k] == next)
{
k = -1;
next = rand.nextInt(total);
}
}
turn[j] = next;
used[j] = next;
}
}
public void paintComponent (Graphics screen)
{
super.paintComponent(screen);
Graphics2D g = (Graphics2D) screen;
g.setColor(Color.white);
g.drawString("paintComponent", 0, 100);
for (int i = 0; i < 4; i++)
{
System.out.println("Painting ally #" + i);
g.drawImage(allyPic[i], ap.ally[i].getXPos(),
ap.ally[i].getYPos(), this);
}
for (int i = 0; i < enemyCount; i++)
{
System.out.println("Painting enemy #" + i);
g.drawImage(enemyPic[i], ep.enemy[i].getXPos(),
ep.enemy[i].getYPos(), this);
}
System.out.println("Screen painted in paint method");
}
public void keyPressed (KeyEvent k) {}
public void keyReleased (KeyEvent k) {}
public void keyTyped (KeyEvent k) {}
}
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