A game highly inspired by Rabi-Ribi being developed using a custom-developed Sig game engine from the ground up with a proper game studio!
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RabiClone/src/sig/engine/Panel.java

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package sig.engine;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.ColorModel;
import java.awt.image.MemoryImageSource;
import java.util.ArrayList;
import java.util.List;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import sig.RabiClone;
public class Panel extends JPanel implements Runnable,ComponentListener {
JFrame window;
public int pixel[];
final int CIRCLE_PRECISION=32;
final int OUTLINE_COL=Color.BRIGHT_WHITE.getColor();
private Thread thread;
private Image imageBuffer;
private MemoryImageSource mImageProducer;
private ColorModel cm;
int scanLine=0;
int nextScanLine=0;
double x_offset=0;
double y_offset=0;
int frameCount=0;
long lastSecond=0;
boolean resizing=false;
long lastUpdate=System.nanoTime();
final long TARGET_FRAMETIME = 8333333l;
public Panel(JFrame f) {
super(true);
this.window=f;
thread = new Thread(this, "MyPanel Thread");
}
/**
* Get Best Color model available for current screen.
* @return color model
*/
protected static ColorModel getCompatibleColorModel(){
GraphicsConfiguration gfx_config = GraphicsEnvironment.
getLocalGraphicsEnvironment().getDefaultScreenDevice().
getDefaultConfiguration();
return gfx_config.getColorModel();
}
/**
* Call it after been visible and after resizes.
*/
public void init(){
cm = getCompatibleColorModel();
int screenSize = getWidth() * getHeight();
if(pixel == null || pixel.length < screenSize){
pixel = new int[screenSize];
}
if(thread.isInterrupted() || !thread.isAlive()){
thread.start();
}
mImageProducer = new MemoryImageSource(getWidth(), getHeight(), cm, pixel,0, getWidth());
mImageProducer.setAnimated(true);
mImageProducer.setFullBufferUpdates(true);
imageBuffer = Toolkit.getDefaultToolkit().createImage(mImageProducer);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
// perform draws on pixels
render();
// ask ImageProducer to update image
mImageProducer.newPixels();
// draw it on panel
g.drawImage(this.imageBuffer, 0, 0, this);
}
/**
* Overrides ImageObserver.imageUpdate.
* Always return true, assuming that imageBuffer is ready to go when called
*/
@Override
public boolean imageUpdate(Image image, int a, int b, int c, int d, int e) {
return true;
}
/**
* Do your draws in here !!
* pixel is your canvas!
*/
public /* abstract */ void render(){
resizeUpdate();
int[] p = pixel; // this avoid crash when resizing
//a=h/w
for (int y=0;y<getHeight();y++) {
for (int x=0;x<getWidth();x++) {
p[y*getWidth()+x]=(0<<16)+(0<<8)+0;//RGB
}
}
Draw_Sprite(Sprite.NANA);
}
private void resizeUpdate() {
if (resizing) {
pixel = new int[getWidth()*getHeight()];
resizing=false;
mImageProducer = new MemoryImageSource(getWidth(), getHeight(), cm, pixel,0, getWidth());
imageBuffer = Toolkit.getDefaultToolkit().createImage(mImageProducer);
System.out.println("Window resized.");
}
}
public void FillRect(int[] p,Color col,double x,double y,double w,double h) {
for (int xx=0;xx<w;xx++) {
for (int yy=0;yy<h;yy++) {
int index = ((int)y+yy)*getWidth()+(int)x+xx;
Draw(p,index,col.getColor());
}
}
}
public void FillCircle(int[] p,Color col,double center_x,double center_y,double r) {
int counter=0;
Point[] points = new Point[CIRCLE_PRECISION];
for (double theta=0;theta<Math.PI*2;theta+=((Math.PI*2)/CIRCLE_PRECISION)) {
//System.out.println("Loop "+counter+++". Theta:"+theta);
//System.out.println("X:"+(Math.sin(theta)*r+center_x)+" Y:"+(Math.cos(theta)*r+center_y));
points[counter++]=new Point((int)(Math.round(Math.sin(theta)*r+center_x)),(int)(Math.round(Math.cos(theta)*r+center_y)));
}
FillPolygon(p,col,0,0,points);
}
public void FillOval(int[] p,Color col,double center_x,double center_y,double w,double h) {
int counter=0;
Point[] points = new Point[CIRCLE_PRECISION];
double r = Math.max(w,h);
double ratio = Math.min(w,h)/r;
for (double theta=0;theta<Math.PI*2;theta+=((Math.PI*2)/CIRCLE_PRECISION)) {
//System.out.println("Loop "+counter+++". Theta:"+theta);
//System.out.println("X:"+(Math.sin(theta)*r+center_x)+" Y:"+(Math.cos(theta)*r+center_y));
Point newP = new Point((int)(Math.round(Math.sin(theta)*r)),(int)(Math.round(Math.cos(theta)*r)));
if (w<h) {
newP.x=(int)Math.round(newP.x*ratio);
} else {
newP.y=(int)Math.round(newP.y*ratio);
}
newP.x+=center_x;
newP.y+=center_y;
points[counter++]=newP;
}
FillPolygon(p,col,0,0,points);
}
public void FillPolygon(int[] p,Color col,double x_offset,double y_offset,Point...points) {
Edge[] edges = new Edge[points.length];
List<Edge> edges_sorted = new ArrayList<Edge>();
for (int i=0;i<points.length;i++) {
edges[i] = new Edge(points[i],points[(i+1)%points.length]);
if (!Double.isInfinite(edges[i].inverse_slope)) {
if (edges_sorted.size()==0) {
edges_sorted.add(edges[i]);
} else {
boolean inserted=false;
for (int j=0;j<edges_sorted.size();j++) {
Edge e2 = edges_sorted.get(j);
if (e2.min_y>=edges[i].min_y) {
edges_sorted.add(j,edges[i]);
inserted=true;
break;
}
}
if (!inserted) {
edges_sorted.add(edges[i]);
}
}
}
}
//System.out.println(edges_sorted);
List<Edge> active_edges = new ArrayList<Edge>();
scanLine = edges_sorted.get(0).min_y-1;
nextScanLine = scanLine+1;
do {
for (int i=0;i<active_edges.size();i+=2) {
Edge e1 = active_edges.get(i);
Edge e2 = active_edges.get(i+1);
//System.out.println("Drawing from "+((int)Math.round(e1.x_of_min_y))+" to "+e2.x_of_min_y+" on line "+scanLine);
for (int x=(int)Math.round(e1.x_of_min_y);x<=e2.x_of_min_y;x++) {
int index = (scanLine+(int)y_offset)*getWidth()+x+(int)x_offset;
if (index<p.length&&index>=0) {
Draw(p,index,col.getColor());
}
}
}
List<Edge> new_active_edges = new ArrayList<Edge>();
for (int i=0;i<active_edges.size();i++) {
Edge e = active_edges.get(i);
if (e.max_y==scanLine+1) {
active_edges.remove(i--);
} else {
e.x_of_min_y+=e.inverse_slope;
}
}
scanLine++;
for (int i=0;i<active_edges.size();i++) {
Edge e = active_edges.get(i);
boolean inserted=false;
for (int j=0;j<new_active_edges.size();j++) {
Edge e2 = new_active_edges.get(j);
if (e2.x_of_min_y>e.x_of_min_y) {
new_active_edges.add(j,e);
inserted=true;
break;
}
}
if (!inserted) {
new_active_edges.add(e);
}
}
active_edges=new_active_edges;
GetNextScanLineEdges(edges_sorted, active_edges);
}
while (active_edges.size()>0);
}
private void GetNextScanLineEdges(List<Edge> edges_sorted, List<Edge> active_edges) {
if (scanLine==nextScanLine) {
for (int i=0;i<edges_sorted.size();i++) {
Edge e = edges_sorted.get(i);
if (e.min_y==scanLine) {
e = edges_sorted.remove(i--);
boolean inserted=false;
for (int j=0;j<active_edges.size();j++) {
if (e.x_of_min_y<active_edges.get(j).x_of_min_y) {
active_edges.add(j,e);
inserted=true;
break;
}
}
if (!inserted) {
active_edges.add(e);
}
} else
if (e.min_y>scanLine) {
nextScanLine=e.min_y;
break;
}
}
}
}
public void Draw(int[] canvas,int index, int col) {
int alpha = col>>>24;
if (alpha==0) {
return;}
else
if (alpha==255) {
canvas[index]=col;
} else {
float ratio=alpha/255f;
int prev_col=canvas[index];
int prev_r=(prev_col&0xFF);
int prev_g=(prev_col&0xFF00)>>>8;
int prev_b=(prev_col&0xFF0000)>>>16;
int r=(col&0xFF);
int g=(col&0xFF00)>>>8;
int b=(col&0xFF0000)>>>16;
int new_r=(int)(ratio*r+(1-ratio)*prev_r);
int new_g=(int)(ratio*g+(1-ratio)*prev_g);
int new_b=(int)(ratio*b+(1-ratio)*prev_b);
canvas[index]=new_r+(new_g<<8)+(new_b<<16)+(col&0xFF000000);
}
}
public void Draw_Sprite(Sprite sprite){
int[] p = pixel;
for(int x=0;x<sprite.height;x++){
for(int y=0;y<sprite.width;y++){
p[y*getWidth()+x] = sprite.bi_array[y*sprite.width+x];
}
}
}
@Override
public void run() {
while (true) {
// request a JPanel re-drawing
repaint();
//System.out.println("Repaint "+frameCount++);
waitForNextFrame();
}
}
private void waitForNextFrame() {
long newTime = System.nanoTime();
if (newTime-lastUpdate<TARGET_FRAMETIME) {
long timeRemaining=TARGET_FRAMETIME-(newTime-lastUpdate);
long millis = timeRemaining/1000000l;
int nanos = (int)(timeRemaining-millis*1000000l);
//System.out.println(timeRemaining+"/"+millis+" Nanos:"+nanos);
try {
Thread.sleep(millis,nanos);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
lastUpdate=newTime;
updateFPSCounter();
}
private void updateFPSCounter() {
if (window!=null&&System.currentTimeMillis()-lastSecond>=1000) {
window.setTitle(RabiClone.PROGRAM_NAME+" - FPS: "+(frameCount));
frameCount=0;
lastSecond=System.currentTimeMillis();
}
frameCount++;
}
@Override
public void componentHidden(ComponentEvent e) {
// TODO Auto-generated method stub
}
@Override
public void componentMoved(ComponentEvent e) {
// TODO Auto-generated method stub
}
@Override
public void componentResized(ComponentEvent e) {
//COMPONENT_RESIZED (8,564 948x508)
resizing=true;
}
@Override
public void componentShown(ComponentEvent e) {
// TODO Auto-generated method stub
}
}