我正在尝试使用移动的图形对象创建一个刷新的applet。但是我试图结合缓冲以防止我在执行程序时遇到的闪烁。如果您能提供有关如何使该计划有效的任何帮助，我将不胜感激。
import java.awt.*;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.applet.*;
import java.util.*;
import java.io.*;
import javax.imageio.ImageIO;
public class Flappy extends Applet {
static flappyBird Flappy1;
flappyBird FlappyF;
static Illuminati Illuminati1;
static Illuminati IlluminatiEye;
static Illuminati IlluminatedFlappy;
static Illuminati IlluminatiTroll;
static BufferedImage img;
static int x;
DoubleB Buffers;
@Override
public void init() {
Flappy1 = new flappyBird(500,500, 1);
Illuminati1 = new Illuminati(10, 50, 1);
IlluminatiEye = new Illuminati_eye(100,50,1);
IlluminatiTroll = new Illuminati_Troll(200, 50, 1);
IlluminatedFlappy = new illuminati_Flappy(300,50,1);
FlappyF = new flappyFly(800,500,1);
System.out.println("init");
this.setSize(1000,1000);
this.setVisible(true);
try {
img = ImageIO.read(new File("bgflappy.jpg"));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
x=2;
}
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
RenderingHints rh1 = new RenderingHints(
RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
RenderingHints rh2 = new RenderingHints(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
g2.setRenderingHints(rh1);
g2.setRenderingHints(rh2);
Flappy1.drawFlappy(g2);
FlappyF.drawFlappy(g2);
Illuminati1.gridIlluminati(g2);
IlluminatiEye.gridIlluminati(g2);
IlluminatiTroll.gridIlluminati(g2);
IlluminatedFlappy.gridIlluminati(g2);
}
class DoubleB extends Canvas{
Graphics g;
public DoubleB (Graphics g2){
g=g2;
}
public void rfresh(Graphics g)
{
Graphics gg;
Image offscreen = null;
Dimension d = new Dimension(1000,1000);
offscreen = createImage(d.width, d.height);
gg = offscreen.getGraphics();
if (x==2)
{
gg.drawImage(img, 0, 0, null);
Flappy1.drawFlappy(gg);
Illuminati1.gridIlluminati(gg);
IlluminatiEye.gridIlluminati(gg);
IlluminatiTroll.gridIlluminati(gg);
IlluminatedFlappy.gridIlluminati(gg);
}
if (x==3)
{
g.drawImage(offscreen, 0, 0, this);
x=-1;
}
x++;
}}
class flappyBird {
private final int topLx, topLy, pxlSize;
public flappyBird(int topLx, int topLy, int pxlSize) {
this.topLx = topLx;
this.topLy = topLy;
this.pxlSize = pxlSize;
}
public void drawFlappy(Graphics g2) {
int[][] FlappyBird = {
drawGrid(g2, getTopLx(), getTopLy(), getPxlSize(), FlappyBird);
}
public void drawGrid(Graphics g2, int xStart, int yStart, int pixSize,int[][] grid) {
int nRows = grid.length;
Color[] pallette = { Color.white, Color.red, Color.green,Color.blue, Color.yellow, Color.cyan, Color.magenta, Color.black };
Color[] pallette2 = { Color.WHITE, Color.GRAY, Color.YELLOW,Color.ORANGE, Color.green, Color.BLUE, Color.magenta, Color.RED,Color.PINK, Color.BLACK };
int nCols = grid[0].length;
System.out.print(nCols);
int x = xStart;
int y = yStart;
int p = pixSize;
for (int r = 0; r < nRows; r++)
for (int c = 0; c < nCols; c++) {
g2.setColor(pallette2[grid[r][c]]);
g2.fillRect(x + c * p, y + r * p, p, p);
}
}
public int getTopLx() {
return this.topLx;
}
public int getTopLy() {
return this.topLy;
}
public int getPxlSize() {
return this.pxlSize;
}
}
class flappyFly extends flappyBird {
public flappyFly(int topLx, int topLy, int pxlSize) {
super(topLx, topLy, pxlSize);
}
public Color Little(double valH, double valS, double valB) { ////////////////////////////////////////////////////////////////////////////TRANSPARENT COLOR
double H = valH;
double S = valS;
double B = valB;
int rgb = Color.HSBtoRGB((float)H, (float)S, (float)B);
int red = (rgb >> 16) & 0xFF;
int green = (rgb >> 8) & 0xFF;
int blue = rgb & 0xFF;
Color color = new Color(red, green, blue, 200);
return color;
}
public Color color(double valH, double valS, double valB) { ////////////////////////////////////////////////////////////////////////////TRANSPARENT COLOR
double H = valH * 0.3;
double S = valS*0.9;
double B = valB*0.9;
int rgb = Color.HSBtoRGB((float)H, (float)S, (float)B);
int red = (rgb >> 16) & 0xFF;
int green = (rgb >> 8) & 0xFF;
int blue = rgb & 0xFF;
Color color = new Color(red, green, blue, 0x00);
return color;}
public void drawGrid(Graphics g2, int xStart, int yStart, int pixSize,int[][] grid)
{
Buffers=new DoubleB(g2);
int nRows = grid.length;
Color[] pallette = { Color.white, Color.red, Color.green,Color.blue, Color.yellow, Color.cyan, Color.magenta, Color.black };
Color[] pallette2 = { Color.WHITE, Color.GRAY, Color.YELLOW,Color.ORANGE, Color.green, Color.BLUE, Color.magenta, Color.RED,Color.PINK, Color.BLACK };
int nCols = grid[0].length;
System.out.print(nCols);
double x = xStart;
double y = yStart;
int p = pixSize;
double addy=0;
double addx=0;
Random Randy = new Random();
int z =0;
while (z!=1)
{
int xcurr = Randy.nextInt(1000)+1;
int ycurr = Randy.nextInt(700)+151;
System.out.println("RndX: " + xcurr);
System.out.println("RndY: " + ycurr);
addx=(double)(xcurr-x)/x;
addy=(double)(ycurr-y)/y;
while(Math.abs(x-xcurr)>50 && Math.abs(y-ycurr)>50)
{
/* if (x<=0||x>=1000)
{ xcurr = -xcurr;
System.out.println("xcurr: "+xcurr);
}
if (y<=5||y>=995)
ycurr=-ycurr;
*/
Buffers.update(g2);
System.out.println("addy:" + addy + "\n addx:" + addx );
x+=addx;
y+=addy;
for (int r = 0; r < nRows; r++)
for (int c = 0; c < nCols; c++) {
g2.setColor(pallette2[grid[r][c]]);
if(grid[r][c]==2)
g2.setColor(Little(61,86,70));
if (grid[r][c]==0)
g2.setColor(color(0,0,0));
if (grid[r][c]==3)
g2.setColor(Little(37, 88, 83));
if(grid[r][c]==9)
g2.setColor(Little(0,0,0));
g2.fillRect((int)x + c * p, (int)y + r * p, p, p);
}
try {Thread.sleep(25);} catch(InterruptedException intrx) {/* handle the exception */}
System.out.println("x " + x + " y " + y);
System.out.println("xcurr: "+xcurr+" ycurr: " + ycurr);
}}}}
谢谢， 梅森