sigonasr2/PixelEngine
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Render loop now paints properly

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Co-authored-by: sigonasr2 <sigonasr2@gmail.com>
This commit is contained in:
sigonasr2 2022-11-28 12:17:28 -06:00
parent 010ac996e6
commit ca082c3f2c
3 changed files with 79 additions and 48 deletions
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11
src/sig/JavaProjectTemplate.java
View File

@ -1,10 +1,7 @@
package sig;
import javax.swing.JFrame;
import sig.engine.Color;
import sig.engine.Panel;
import java.awt.RenderingHints;
public class JavaProjectTemplate {
public static final String PROGRAM_NAME="Sig's Java Project Template";
@ -12,10 +9,14 @@ public class JavaProjectTemplate {
public static int WINDOW_HEIGHT=720;
public static Panel game;
public static void updateGame() {
}
public static void drawGame() {
game.Clear(Color.BRIGHT_BLUE);
game.Draw_Line(null, WINDOW_HEIGHT, WINDOW_HEIGHT, WINDOW_WIDTH, WINDOW_HEIGHT, 0);
game.Draw(100,20,Color.BLACK);
game.Draw_Line(10,10,35,35,Color.BLACK);
game.FillCircle(Color.MAGENTA,200,200,50);
}
public static void main(String[] args) {

7
src/sig/engine/Color.java
View File

@ -35,4 +35,11 @@ public class Color {
public int getColor() {
return (a<<24)+(r<<16)+(g<<8)+b;
}
@Override
public java.lang.String toString() {
return "Color [r=" + r + ", g=" + g + ", b=" + b + ", a=" + a + "]";
}
}

109
src/sig/engine/Panel.java
View File

@ -51,6 +51,9 @@ public class Panel extends JPanel implements Runnable,KeyListener {
public HashMap<Integer,Boolean> MOUSE = new HashMap<>();
private Point mousePosition = new Point(0,0);
private MouseScrollValue scrollWheel=null;
public static final int UPDATE_LOOP_FRAMERATE = 244;
public static final long UPDATE_LOOP_NANOTIME = (long)((1d/UPDATE_LOOP_FRAMERATE)*1000000000l);
public static final double UPDATE_MULT = 1d / UPDATE_LOOP_FRAMERATE;
public static RenderingHints RENDERHINTS = new RenderingHints(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_OFF);
@ -85,9 +88,37 @@ public class Panel extends JPanel implements Runnable,KeyListener {
(int) ((Toolkit.getDefaultToolkit().getScreenSize().getHeight() - f.getHeight()) / 2));
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
f.createBufferStrategy(2);
p.render();
long lastGameTime = System.nanoTime();
long dt = 0;
while (true) {
dt += System.nanoTime() - lastGameTime;
lastGameTime = System.nanoTime();
while (dt >= UPDATE_LOOP_NANOTIME) {
JavaProjectTemplate.updateGame();
dt -= UPDATE_LOOP_NANOTIME;
TIME += UPDATE_LOOP_NANOTIME;
}
gameUpdateLoopStabilizer(dt); //This is hackish. Removing this slows down the game by about 30%. The timer runs slower. ???
}
}
private static void gameUpdateLoopStabilizer(long dt) {
if (dt < UPDATE_LOOP_NANOTIME) {
lastReportedTime = System.currentTimeMillis();
} else {
if (System.currentTimeMillis() - lastReportedTime > 5000) {
System.out.println("WARNING! Game is lagging behind! Frames Behind: " + (dt / UPDATE_LOOP_NANOTIME));
lastReportedTime = System.currentTimeMillis();
}
}
try {
Thread.sleep(4);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public Panel(JFrame f) {
@ -200,11 +231,10 @@ public class Panel extends JPanel implements Runnable,KeyListener {
public /* abstract */ void render(){
//a=h/w
JavaProjectTemplate.drawGame();
}
public void FillCircle(byte[] p,byte col,double center_x,double center_y,double r) {
public void FillCircle(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)) {
@ -212,11 +242,11 @@ public class Panel extends JPanel implements Runnable,KeyListener {
//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);
FillPolygon(col,0,0,points);
}
public void FillOval(byte[] p,byte col,double center_x,double center_y,double w,double h) {
public void FillOval(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);
@ -234,10 +264,10 @@ public class Panel extends JPanel implements Runnable,KeyListener {
newP.y+=center_y;
points[counter++]=newP;
}
FillPolygon(p,col,0,0,points);
FillPolygon(col,0,0,points);
}
public void FillPolygon(byte[] p,byte col,double x_offset,double y_offset,Point...points) {
public void FillPolygon(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++) {
@ -272,8 +302,8 @@ public class Panel extends JPanel implements Runnable,KeyListener {
//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);
if (index<pixel.length&&index>=0) {
Draw(index,col.getColor());
}
}
}
@ -335,36 +365,34 @@ public class Panel extends JPanel implements Runnable,KeyListener {
}
}
public void Draw(int index, byte col) {
public void Draw(int x, int y, Color col) {
Draw(y*JavaProjectTemplate.WINDOW_WIDTH+x,col.getColor());
}
void Draw(int index, int col) {
pixel[index]=col;
}
@Override
public void run() {
if (mImageProducer==null) return;
while (true) {
// request a JPanel re-drawing
//repaint();
render();
mImageProducer.newPixels();
if (f!=null&&f.getBufferStrategy()!=null) {
do {
do {
if (f.getBufferStrategy()!=null) {
Graphics2D g2 = (Graphics2D)f.getBufferStrategy().getDrawGraphics();
g2.setRenderingHints(RENDERHINTS);
if (g2!=null) {
try {
paintComponent(g2);
} finally {
g2.dispose();
}
}
}
} while (f.getBufferStrategy().contentsRestored());
f.getBufferStrategy().show();
Toolkit.getDefaultToolkit().sync();
} while (f.getBufferStrategy().contentsLost());
if (f!=null) {
Graphics2D g2 = (Graphics2D)f.getGraphics();
if (g2!=null) {
g2.setRenderingHints(RENDERHINTS);
try {
repaint();
} finally {
g2.dispose();
}
} else {
System.out.println("Invalid frame!");
}
} else {
System.out.println("Invalid frame!");
}
updateFPSCounter();
//System.out.println("Repaint "+frameCount++);
@ -438,7 +466,7 @@ public class Panel extends JPanel implements Runnable,KeyListener {
}
}
public void Draw_Line(byte[] canvas,int x1,int y1,int x2,int y2,byte col) {
public void Draw_Line(int x1,int y1,int x2,int y2,Color col) {
int x,y,dx,dy,dx1,dy1,px,py,xe,ye;
dx=x2-x1;dy=y2-y1;
dx1=Math.abs(dx);dy1=Math.abs(dy);
@ -449,7 +477,6 @@ public class Panel extends JPanel implements Runnable,KeyListener {
} else {
x=x2-1;y=y2-1;xe=x1;
}
Draw(canvas,y*JavaProjectTemplate.WINDOW_WIDTH+x,col);
while (x<xe) {
x=x+1;
if (px<0) {
@ -462,7 +489,7 @@ public class Panel extends JPanel implements Runnable,KeyListener {
}
px=px+2*(dy1-dx1);
}
Draw(canvas,y*JavaProjectTemplate.WINDOW_WIDTH+x,col);
Draw(y*JavaProjectTemplate.WINDOW_WIDTH+x,col.getColor());
}
} else {
if (dy>=0) {
@ -470,7 +497,7 @@ public class Panel extends JPanel implements Runnable,KeyListener {
} else {
x=x2-1;y=y2-1;ye=y1;
}
Draw(canvas,y*JavaProjectTemplate.WINDOW_WIDTH+x,col);
Draw(y*JavaProjectTemplate.WINDOW_WIDTH+x,col.getColor());
while (y<ye) {
y=y+1;
if (py<=0) {
@ -483,17 +510,17 @@ public class Panel extends JPanel implements Runnable,KeyListener {
}
py=py+2*(dx1-dy1);
}
Draw(canvas,y*JavaProjectTemplate.WINDOW_WIDTH+x,col);
Draw(y*JavaProjectTemplate.WINDOW_WIDTH+x,col.getColor());
}
}
}
public void Fill_Rect(byte[] p,byte col,double x,double y,double w,double h) {
public void Fill_Rect(Color col,double x,double y,double w,double h) {
for (int xx=0;xx<w;xx++) {
for (int yy=0;yy<h;yy++) {
if (x+xx>=0&&y+yy>=0&&x+xx<JavaProjectTemplate.WINDOW_WIDTH&&y+yy<JavaProjectTemplate.WINDOW_HEIGHT) {
int index = ((int)y+yy)*JavaProjectTemplate.WINDOW_WIDTH+(int)x+xx;
Draw(p,index,col);
Draw(index,col.getColor());
}
}
}
@ -550,7 +577,7 @@ public class Panel extends JPanel implements Runnable,KeyListener {
if (((sprite.getImg().getRGB(X,Y)>>>24)&0xFF)==0||index<0||index>=pixel.length) {
continue;
} else {
Draw(pixel,index,(col==Color.WHITE)?sprite.getImg().getRGB(X,Y):col.getColor());
Draw(index,(col==Color.WHITE)?sprite.getImg().getRGB(X,Y):col.getColor());
}
}
}
@ -560,12 +587,8 @@ public class Panel extends JPanel implements Runnable,KeyListener {
public void Clear(Color col){
for (int y=0;y<JavaProjectTemplate.WINDOW_HEIGHT;y++) {
for (int x=0;x<JavaProjectTemplate.WINDOW_WIDTH;x++) {
Draw(pixel,y*JavaProjectTemplate.WINDOW_WIDTH+x,col.getColor());
Draw(y*JavaProjectTemplate.WINDOW_WIDTH+x,col.getColor());
}
}
}
public void Draw(int[] canvas,int index, int col) {
canvas[index]=col;
}
}