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import java.awt.Color;
import java.awt.Graphics;
import java.util.Random;
import javax.swing.JFrame;
public class Pathsearch extends JFrame
{
int curX=0;
int curY=0;
int SIZE_X=30;
int SIZE_Y=30;
int[][] passable = new int[SIZE_X][SIZE_Y];
int[][] field = new int[SIZE_X][SIZE_Y];
int scaling=10;
int tx=10;
int ty=40;
int startX=25;
int startY=25;
int goalX=1;
int goalY=1;
public Pathsearch()
{
this.setVisible(true);
this.setSize(SIZE_X*10+20, SIZE_Y*10+50);
setDefaultCloseOperation(3);
this.setLocationRelativeTo(null);
Random ran=new Random();
for(int xx=0;xx<SIZE_X;xx++)
{
for(int yy=0;yy<SIZE_Y;yy++)
{
passable[xx][yy]=ran.nextInt(4)==0?1:0;
}
}
this.repaint();
curX=startX;
curY=startY;
System.out.println(0 % 2 );
while(true)
{
int gx=curX;
int gy=curY;
double minDist=1000000;
for(int x=-1;x<2;x++)
{
for(int y=-1;y<2;y++)
{
int nx=curX+x;
int ny=curY+y;
if(nx>=0 && nx<SIZE_X && ny>=0 && ny<SIZE_Y && !(x==0 && y==0) && !(Math.abs(x)==1 && Math.abs(y)==1))
{
if(passable[nx][ny]==0)
{
double dx=nx-goalX;
double dy=ny-goalY;
double dist=Math.sqrt((dx*dx) + (dy*dy));
dist+=field[nx][ny];
if(dist<minDist)
{
gx=nx;
gy=ny;
minDist=dist;
}
}
}
}
}
curX=gx;
curY=gy;
field[gx][gy]+=50;
if(curX==goalX && curY==goalY) break;
try
{
Thread.sleep(100);
} catch (InterruptedException e)
{
e.printStackTrace();
}
this.repaint();
}
}
BufferedImage buffer=new BufferedImage(400,400,1);
public void paint(Graphics g)
{
Graphics g2=g;
g=buffer.getGraphics();
g.setColor(new Color(255,255,255));
g.fillRect(0, 0, 400, 400);
g.translate(tx, ty);
g.setColor(new Color(230,230,230));
for(int xx=0;xx<SIZE_X;xx++)
{
g.drawLine(xx*scaling, 0, xx*scaling, SIZE_Y*scaling);
}
for(int xx=0;xx<SIZE_Y;xx++)
{
g.drawLine(0, xx*scaling, SIZE_X*scaling, xx*scaling);
}
g.setColor(new Color(100,100,100));
for(int xx=0;xx<SIZE_X;xx++)
{
for(int yy=0;yy<SIZE_Y;yy++)
{
if(passable[xx][yy]!=0) g.fillRect(xx*scaling, yy*scaling, scaling, scaling);
}
}
g.setColor(new Color(250,100,100));
g.fillRect(startX*scaling, startY*scaling, scaling, scaling);
g.setColor(new Color(100,100,250));
g.fillRect(goalX*scaling, goalY*scaling, scaling, scaling);
g.setColor(new Color(100,250,100));
g.fillRect(curX*scaling, curY*scaling, scaling, scaling);
g2.drawImage(buffer, 0, 0, null);
}
public static void main(String[] args)
{
new Pathsearch();
}
}
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