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Java Game APIs & Engines / OpenGL Development / JOGL and JBOX2D
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on: 2011-08-22 19:59:50
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Hello, im doing a test with JBox2D with Jogamp (JOGL) so my problem is the "Box" doesnt fallout , i made this test , reading a bunch of examples that appears to work, but not to me, 1
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| import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.opengl.*;
import javax.media.opengl.glu.*;
import javax.media.opengl.awt.GLCanvas;
import com.jogamp.opengl.util.*;
import org.jbox2d.dynamics.*;
import org.jbox2d.common.*;
import org.jbox2d.collision.*;
import org.jbox2d.collision.shapes.PolygonShape;
public class SimpleScene implements GLEventListener {
private final int SCREEN_WIDTH = 800;
private final int SCREEN_HEIGHT = 600;
private GLU glu;
private World world;
private Body block;
private int blockW = 50;
private int blockH = 50;
public static void main(String[] args) {
GLProfile glp = GLProfile.getDefault();
GLCapabilities caps = new GLCapabilities(glp);
GLCanvas canvas = new GLCanvas(caps);
Frame frame = new Frame("JBox2D Test");
frame.setSize(800, 600);
frame.add(canvas);
frame.setVisible(true);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
canvas.addGLEventListener(new SimpleScene());
FPSAnimator animator = new FPSAnimator(canvas, 60);
animator.add(canvas);
animator.start();
}
public SimpleScene(){
initPhysx();
}
private void initPhysx(){
Vec2 gravity = new Vec2(0.f,-9.8f);
world = new World(gravity, true);
world.setGravity(gravity);
createBlock();
}
private void createBlock(){
BodyDef blockDef;
PolygonShape blockShape;
blockDef = new BodyDef();
blockDef.type = BodyType.DYNAMIC;
blockDef.position.set(100, 100);
blockShape = new PolygonShape();
blockShape.setAsBox(blockW, blockH);
FixtureDef fixtureDef = new FixtureDef();
fixtureDef.shape = blockShape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.8f;
fixtureDef.restitution = 0.3f;
block = world.createBody(blockDef);
block.createFixture(fixtureDef);
block.setType(BodyType.DYNAMIC);
}
@Override
public void display(GLAutoDrawable drawable) {
update();
render(drawable);
}
@Override
public void dispose(GLAutoDrawable drawable) {
}
@Override
public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
glu = new GLU();
establishProjectionMatrix(gl,SCREEN_WIDTH,SCREEN_HEIGHT);
gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
gl.glEnable(GL2.GL_TEXTURE_2D);
}
@Override
public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {
GL2 gl = drawable.getGL().getGL2();
establishProjectionMatrix(gl,SCREEN_WIDTH,SCREEN_HEIGHT);
}
public void establishProjectionMatrix(GL2 gl,int width,int height){
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL2.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluOrtho2D(0,width,height,0);
}
private void update() {
world.step(1/60, 8, 1);
}
private void render(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
gl.glClear( GL2.GL_COLOR_BUFFER_BIT );
gl.glMatrixMode( GL2.GL_MODELVIEW );
gl.glLoadIdentity();
gl.glColor3f(1.0f, 0.0f, 0.0f);
for (Body body = world.getBodyList(); body != null; body = body.getNext()) {
Vec2 p = body.getPosition();
float angle = (float) Math.toDegrees(body.getAngle());
drawQuad(gl,p.x,p.y,blockW,blockH,angle);
System.out.println(body.getPosition() +" " + world.getGravity());
}
}
private void drawLine(GL2 gl, float x1,float y1, float x2, float y2){
gl.glBegin(GL.GL_LINES);
gl.glVertex2f((x1), (y1));
gl.glVertex2f((x2), (y2));
gl.glEnd();
}
private void drawQuad(GL2 gl, float x,float y, float w, float h,float angle){
gl.glTranslatef(x, y, 0.0f);
gl.glRotatef(angle, 0, 0, 1);
gl.glBegin(GL2.GL_QUADS);
gl.glTexCoord2f(0.0f,0.0f); gl.glVertex2f(-w, h);
gl.glTexCoord2f(0.0f,1.0f); gl.glVertex2f(-w,-h);
gl.glTexCoord2f(1.0f,1.0f); gl.glVertex2f( w,-h);
gl.glTexCoord2f(1.0f,0.0f); gl.glVertex2f( w, h);
gl.glEnd();
}
} |
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6
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Java Game APIs & Engines / Java 2D / EvenListener or Thread?
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on: 2010-04-14 01:14:41
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Hey everyone, im working on a game, so i want to have some handles, one for the painting the "Draw method", other for the logic that usually called "Update Method" , so i want those two methods work for their own, because in this way i will be able to put some loops instructions like for, while in the Update method, without interrupt the painting i did two threads called PaintHandle and UpdateHandle , and they have a While that called the Draw and the Update method from each Actor at first was really messy so i put a Thread Delay 1
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| private final int DELAY = 40;
public void run(){
while (true) {
for (int i=0 ; i < actors.size() ; i++){
( (Actor)(actors.get(i)) ).update();
}
try{
Thread.sleep(DELAY);
}catch(Exception e){}
}
} |
the same with the paint handle, just change the update with draw() , well it work at first, but sometime it get messy again, so i think the thread is to fast or i dont know, so i was wondering, if you recommend to used EventListener insted or a better way hope you could understand my problem |
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7
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Java Game APIs & Engines / Java 2D / Re: canvas into applet?
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on: 2009-10-08 02:49:22
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hello people, i posted this topic long time ago, since i couldn't figer out the problem i stopped try to make it works so today i openned the code again, and i tried the suggestion that cylab replied in the post, i didn't tried before i dont know why xD , so i did it, and it worked ! ^^ , i changed Applet to JApplet and it rendered my custom Canvas I have no idea. You could try to extend JApplet instead of Applet since you are adding a swing panel:
thx cylab, and sorry for my late reply and testing |
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8
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Java Game APIs & Engines / JOGL Development / Re: loading a TGA image , wrong colors
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on: 2009-08-16 22:42:10
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hey Cork i did that you told me and i was able to figer out the problem , the color was in the wrong order i changed this 1
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rawData[i + 2] = dis.readByte(); rawData[i + 1] = dis.readByte(); rawData[i ] = dis.readByte(); |
for this 1
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| rawData[i ] = dis.readByte(); rawData[i + 2] = dis.readByte(); rawData[i + 1] = dis.readByte(); |
is a little bit strange because the TGA colors are BGR , so you have to swap the B with the R and that's it , but in this case is RBG ? well, thx for everything  |
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9
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Java Game APIs & Engines / JOGL Development / Re: loading a TGA image , wrong colors
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on: 2009-08-16 03:54:29
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oh thx a lot cork , it worked so good, i didnt know about that class, i will use this in the future insted of my own class
but if somebody can tell me the error why it shows me the wrong color i will be so thankful too, i just curious and i want to know what happened in there too
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10
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Java Game APIs & Engines / JOGL Development / Re: loading a TGA image , wrong colors
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on: 2009-08-14 22:46:43
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OpenGLDemo.java
[CODE]
package com.ogltest;
import com.sun.opengl.util.Animator;
import java.awt.Frame;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCanvas;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.glu.GLU;
public class OpenGLDemo implements GLEventListener,KeyListener {
static Frame frame=null;
static int windowWidth=500;
static int windowHeight=500;
float cubeRotateX = 45.0f;
float cubeRotateY = 45.0f;
boolean keys[]=new boolean[255];
com.ogltest.Texture texture = null;
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
establishProjectionMatrix(gl,windowWidth,windowHeight);
gl.glShadeModel(GL.GL_SMOOTH);
gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
gl.glEnable(GL.GL_DEPTH_TEST);
gl.glDepthFunc(GL.GL_LEQUAL);
gl.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
gl.glEnable(GL.GL_PERSPECTIVE_CORRECTION_HINT);
gl.glEnable(GL.GL_TEXTURE_2D);
texture = new com.ogltest.Texture("data/joyal_wood_texture.tga", "Joyal Box",drawable);
}
public void establishProjectionMatrix(GL gl,int width,int height){
GLU glu = new GLU();
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45.0f, (float)width/(float)height, 0.1f, 200.0f);
}
public void display(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0,0,-5.0f);
gl.glRotatef(cubeRotateX,1,0,0);
gl.glRotatef(cubeRotateY,0,1,0);
gl.glColor3f(1.0f, 1.0f, 1.0f);
gl.glBindTexture(GL.GL_TEXTURE_2D, texture.texID[0]);
//Draw Cube
gl.glBegin(GL.GL_QUADS);
//Top face
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f,-1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f,-1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
//Bottom face
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f,-1.0f,-1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f,-1.0f,-1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f,-1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f,-1.0f, 1.0f);
//Front face
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f,-1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f,-1.0f, 1.0f);
//Back face
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f,-1.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f,-1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f,-1.0f,-1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f,-1.0f,-1.0f);
//Left face
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f,-1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f,-1.0f,-1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f,-1.0f, 1.0f);
//Right face
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f,-1.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f,-1.0f,-1.0f);
gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f,-1.0f, 1.0f);
gl.glEnd();
gl.glFlush();
displayFPS();
}
long lastTime = System.currentTimeMillis();
long loops = 0;
float fps= 0.0f;
public void displayFPS(){
long newTime = System.currentTimeMillis();
if (newTime - lastTime > 100)
{
float newFPS = (float)loops / (float) (newTime - lastTime) * 1000.0f;
fps = (fps + newFPS) / 2.0f;
frame.setTitle("OpenGL Demo - "+fps);
lastTime = newTime;
loops=0;
}
loops++;
}
long lastTimeKeys = System.currentTimeMillis();
public boolean checkKeys(){
final float speed = 1.0f;
final long updateTime = 2;
long newTime = System.currentTimeMillis();
if (newTime - lastTimeKeys > updateTime){
if (keys[KeyEvent.VK_LEFT])
cubeRotateY -= speed;
if (keys[KeyEvent.VK_RIGHT])
cubeRotateY += speed;
if (keys[KeyEvent.VK_UP])
cubeRotateX -= speed;
if (keys[KeyEvent.VK_DOWN])
cubeRotateX += speed;
lastTimeKeys = newTime;
}
return false;
}
public void keyPressed(KeyEvent e) {
keys[e.getKeyCode()]=true;
}
public void keyReleased(KeyEvent e) {
keys[e.getKeyCode()]=false;
}
public static void main(String[] args) {
OpenGLDemo ogl=new OpenGLDemo();
initWindow("OpenGL Demo",windowWidth, windowHeight,ogl);
boolean done=false;
while (!done){
ogl.checkKeys();
}
}
public static void initWindow(String title,int width, int height,OpenGLDemo ogl)
{
frame = new Frame(title);
GLCanvas canvas = new GLCanvas();
canvas.addGLEventListener(ogl);
frame.addKeyListener(ogl);
frame.add(canvas);
frame.setSize(width, height);
final Animator animator = new Animator(canvas);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
// Run this on another thread than the AWT event queue to
// make sure the call to Animator.stop() completes before
// exiting
new Thread(new Runnable() {
public void run() {
animator.stop();
System.exit(0);
}
}).start();
}
});
// Center frame
frame.setLocationRelativeTo(null);
frame.setVisible(true);
animator.start();
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
GL gl = drawable.getGL();
GLU glu = new GLU();
}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
}
public void keyTyped(KeyEvent e) {
}
}
[/CODE]
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11
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Java Game APIs & Engines / JOGL Development / loading a TGA image , wrong colors
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on: 2009-08-14 22:46:01
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hello, i started to learn OpenGL watching the 3dbuzz OpenGL VTMs ( www.3dbuzz.com) , and i decided to port my C++ code to jogl, because im a java coder ^^ and i love java, so i was doing the TGA texture loader (uncompress) and it worked fine, i had to do some changes because jogl manage a BufferByte insted of a byte array , well my problem is that the loader show the colors wrong, i textured a cube, i know that the TGA file format use BGR insted of RGB but i already flip the order, and it show wrong still, if you can help me with this, here is the 2 code i used, btw i used the JOGL version with comes with the NeHe demos this the texture = http://www.joyalstudios.com/files/joyal_wood_texture.tgaTexture.java [CODE] package com.ogltest; import javax.media.opengl.GL; import javax.media.opengl.GLAutoDrawable; import com.sun.opengl.util.BufferUtil; import java.io.DataInputStream; import java.io.FileInputStream; import java.io.IOException; import java.nio.ByteBuffer; import java.util.Vector; public class Texture{ public ByteBuffer imageData; public int bpp; public int width; public int height; public int texID[] = new int[1]; public String name; private GLAutoDrawable drawable; static Vector<Texture>textures = new Vector<Texture>(); public Texture(String in_filename, String in_name,GLAutoDrawable drawable) { this.drawable = drawable; loadTGA(in_filename); name = in_name; textures.add(this); } boolean loadTGA(String filename) { try{ FileInputStream file = new FileInputStream(filename); DataInputStream dis = new DataInputStream(file); // TGA_Header byte ID_Length = dis.readByte(); byte ColorMapType = dis.readByte(); byte ImageType = dis.readByte(); byte ColorMapSpecification[]= new byte[5]; dis.read(ColorMapSpecification); short xOrigin = flipEndian(dis.readShort()); short yOrigin = flipEndian(dis.readShort()); short ImageWidth = flipEndian(dis.readShort()); short ImageHeight = flipEndian(dis.readShort()); byte pixelDepth = dis.readByte(); bpp = pixelDepth; width = ImageWidth; height = ImageHeight; int bytesPerPixel = bpp / 8; int imageSize = width * height * bytesPerPixel; if (ImageType != 2) return false; if ( width <=0 || height <= 0 || (bpp != 24 && bpp != 32)) return false; int type; byte[] rawData = new byte[imageSize]; if ( bpp == 24){ type = GL.GL_RGB; for ( int i = 0; i < imageSize; i += bytesPerPixel ) { rawData[i + 2] = dis.readByte(); // R rawData[i + 1] = dis.readByte(); // G rawData[i ] = dis.readByte(); // B } }else{ type = GL.GL_RGBA; for ( int i = 0; i < imageSize; i += bytesPerPixel ) { rawData[i + 2] = dis.readByte(); // R rawData[i + 1] = dis.readByte(); // G rawData[i ] = dis.readByte(); // B rawData[i + 3] = dis.readByte(); // Alpha } } imageData = BufferUtil.newByteBuffer(rawData.length); imageData.put(rawData); imageData.flip(); createTexture(imageData, width, height,type); }catch(IOException e){ e.printStackTrace(); } return true; } boolean createTexture(ByteBuffer imageData, int width, int height, int type) { GL gl = drawable.getGL(); gl.glGenTextures(1, texID,0); gl.glBindTexture(GL.GL_TEXTURE_2D, texID[0]); gl.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_LINEAR); gl.glTexParameterf(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR); gl.glTexImage2D(GL.GL_TEXTURE_2D, 0, type, width, height, 0, type, GL.GL_UNSIGNED_BYTE , imageData); return true; } //this method is provided by Slick engine https://bob.newdawnsoftware.com/repos/slick/trunk/Slick/src/org/newdawn/slick/opengl/TGAImageData.javaprivate short flipEndian(short signedShort) { int input = signedShort & 0xFFFF; return (short) (input << 8 | (input & 0xFF00) >>>  ; } } [/CODE] |
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12
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Java Game APIs & Engines / Tools Discussion / Re: JDIV , a 2d engine for java (fully java2d)
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on: 2009-03-25 19:51:57
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oh yes, the particle engine test, should be not there ^^. is not working fine, because the blending modes are too slow , if you recompile the sample without the blending mode just erasing the part "this.blend=BLEND_ADD;" on Particle.java , should be fine, sorry about that, just ignore it for now ^^, and i will put applet version as soon i can
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13
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Java Game APIs & Engines / Tools Discussion / Re: JDIV , a 2d engine for java (fully java2d)
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on: 2009-03-25 19:02:02
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Behave, gouessej.
Pure java will work in applets and webstart apps without requiring signing the app or having the user agree to hand over his computer to you.
thx Markus_Persson , to answer  , other thing is in others non java2d mostly all the time you have to get a specific version depending on the OS you have, because of their dll or .o , etc, native code , something that with java2d doesnt happend you're probably right, with opengl you can get more advance features, and it's more powerful, but java2d is not bad at all , you can do a very decent game with this i think the main goal of my engine is be able to do game in a very easy way, honestly opengl can be very complicated, and for the people who are starting in the game development world can be very hard to get used to it, i think that is the only different thing i can offer with this engine zip version: http://www.joyalstudios.com/files/jdiv.zip |
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14
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Java Game APIs & Engines / Java 2D / Blending modes on java2d?
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on: 2009-03-25 06:40:25
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hello guys, i was wondering is there a way to do the blending modes? (add, multiply, screen, overlay...), i know that are some request to implement this on the new version of the JVM , i found some code to do it, but i doesnt work fine for me, tooo slow , and hard to handle
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15
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Java Game APIs & Engines / Tools Discussion / JDIV , a 2d engine for java (fully java2d)
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on: 2009-03-25 06:34:59
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hello guys, im working in a 2d engine that i called JDIV , 100% java2d, without other 3rd partys , the project is still young, and im still working on it, so i wanted to share with you, some test that i've done using my engine, and i hope you like it and be helpful, maybe to decide on the future with tool use the file has the source code of the all the samples include, to show how's the programing method using this tool, i base my engine in a 2d game language called Fenix , you can see the original compiler in http://fenix.divsite.net , im using their own formats from fenix , that are FPG a file to store image files, a easy way to store sprites and do animation, and FNT , font image files, a very easy way to do bitmap fonts you can download the engine in this url : http://www.joyalstudios.com/files/jdiv.rarany comments, any suggestion will be so helpful |
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16
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Java Game APIs & Engines / Java 2D / Re: canvas into applet?
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on: 2008-08-01 07:40:33
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Can you explain exactly what "didn't work"? It threw an exception, or nothing got rendered, or what? sure, i mean do nothing, nothing got rendered, My guess is that you didn't resize your canvas properly. You should either set the preferred size, or
set the size explicitly. i added to the init() method 1
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and nothing ohh thx dude i didnt notice that , very good tip |
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Java Game APIs & Engines / Java 2D / Re: canvas into applet?
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on: 2008-07-30 03:00:38
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thx man, i tried it, but didnt work for me T_T , i use Frame , maybe is my implementation maybe is wrong. I do all on a canvas, i thought is going to be easy, just add the canvas on the applet and that's it , but it didnt
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Java Game APIs & Engines / Java 2D / Re: canvas into applet?
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on: 2008-07-27 17:53:39
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| package com.jdiv.samples.zelda.applet;
import java.applet.Applet;
import java.awt.Panel;
import java.net.URL;
import com.jdiv.JDiv;
public class Main extends Applet{
static Link link;
static int fpg_enemigo,fpg_ambiente;
public void init(){
URL urlLink= getClass().getClassLoader().getResource("res/fpg/link.fpg"),
urlEnemigo=getClass().getClassLoader().getResource("res/fpg/enemigo.fpg");
JDiv.load_fpg(urlLink);
fpg_enemigo=JDiv.load_fpg(urlEnemigo);
link=new Link();
new Enemigo();
Panel panel = new Panel();
panel.add(JDiv.getCanvas());
add(panel);
}
public void start(){
JDiv.appletInit(JDiv.m320x240);
}
} |
this code below is the Class who extends Canvas 1
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| public void appletInit(int resolution){
setResolution(resolution);
coreInit();
} |
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| private void setResolution(int resolution){
int width=0, height=0;
switch (resolution){
case 0: width=320; height=200; break;
case 1: width=320; height=240; break;
case 2: width=320; height=400; break;
case 3: width=360; height=240; break;
case 4: width=360; height=260; break;
case 5: width=376; height=282; break;
case 6: width=400; height=300; break;
case 7: width=640; height=400; break;
case 8: width=640; height=480; break;
case 9: width=800; height=600; break;
case 10: width=1024; height=768; break;
}
this.width=width;
this.height=height;
} |
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public void coreInit(){
regions.add(new JRegion(0,0,0,getWidth(),getHeight()));
addKeyListener(this);
createBufferStrategy(2);
bStrategy = getBufferStrategy();
gBackBuffer =(Graphics2D)bStrategy.getDrawGraphics();
clearImg=new BufferedImage(getWidth(), getHeight(),BufferedImage.TYPE_INT_RGB);
clearImg.createGraphics();
Graphics g= clearImg.getGraphics();
g.setColor(Color.black);
g.fillRect(0,0,getWidth(),getHeight());
new JUpdate().start();
new JLoop().start();
} |
this code is called in JUpdate Thread 1
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| public void update(){
updatePaint(gBackBuffer);
fps();
bStrategy.show();
mFpsCount++;
} |
all the paint stuff 1
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public void updatePaint(Graphics2D g){
g.drawImage(clearImg,0,0,null);
paintBackground(g);
paintProcess(g);
paintWrites(g);
}
public void update( Graphics g ) {
if (bStrategy!=null) bStrategy.show();
}
public void paint( Graphics g ) {
update( g );
} |
it works perfectly in a Frame but it doesnt in an Applet this the code for the frame 1
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| JDivWindow window=new JDivWindow(title,this,width,height);
window.addKeyListener(this);
window.setVisible(true);
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Constructor of JDivWindow 1
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| public JDivWindow(String title,Canvas canvas,int width,int height){
setTitle(title);
setSize(new Dimension(width+6,height+32));
setLayout(null);
addWindowListener( new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
canvas.setBounds(3,29, width, height);
add(canvas);
} |
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20
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Java Game APIs & Engines / Java 2D / canvas into applet?
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on: 2008-07-27 02:57:07
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hey guys , i never used applet before , and i want to put my game into an applet, i have a class that exteds of canvas and i use buffer strategy, in this class i have a method 1
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| public Canvas getCanvas(){
return this;
} |
and i tried to add it in an applet and didnt work.... could you explain me how i have to do it? |
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21
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Java Game APIs & Engines / Java 2D / Re: get rgb from a canvas?
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on: 2008-07-26 21:34:24
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i have a class that extends from Canvas, and i overrides the paint method to draw the images, the paint method used the Graphics from a BufferStrategy, i have an arraylist that store somes classes which content the BufferedImage and the X , Y information for their position, sorry my english, spanish speaking , i hope that you can understand me |
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23
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Java Game APIs & Engines / Java 2D / get rgb from a canvas?
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on: 2008-07-26 20:29:49
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hi people, im doing a game in java, and i want to get a pixel value by determinate X,Y coordinates , from a canvas , i tried to convert the canvas to bufferedimage, but the result bufferedimage is all black :S 1
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| int pixel=canvasToImage(this).getRGB(x,y);
private BufferedImage canvasToImage(Canvas canvas) {
int w = canvas.getWidth();
int h = canvas.getHeight();
int type = BufferedImage.TYPE_INT_RGB;
BufferedImage image = new BufferedImage(w,h,type);
Graphics2D g2 = image.createGraphics();
canvas.paint(g2);
g2.dispose();
return image;
} |
what can i do? |
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