我想在java中創建生活的遊戲,但我有困難編寫檢查鄰居數量的部分。我明白,問題是當程序到達網格邊緣時它將無法工作,因爲索引比數組的邊界更大/更小。所以問題出在我的鄰居()。我不知道如何解決這個問題,我嘗試擴展if語句,並且還嘗試將整個語句集放在while循環中。該程序似乎正在工作,除非在網格邊緣有活細胞。對此有何建議?提前致謝。康威的生活遊戲的邊界計數鄰居 - java
import java.io.*;
import java.util.Scanner;
public class LifeGrid
{
public int[][] grid;
public int[][] newgrid;
public int getX()
{
return grid[0].length;
}
public int getY()
{
return grid.length;
}
public int getcurrentgen()
{
return currentgen;
}
public int currentgen=0;
// modify neighbours out of boundary problem.
int Neighbours(int x, int y)
{
int neighbours = 0;
if (grid[y][x-1] == 1)
{ neighbours++; }
if (grid[y][x+1] ==1)
{ neighbours++; }
if (grid[y+1][x-1] ==1)
{ neighbours++; }
if (grid[y+1][x+1] ==1)
{ neighbours++; }
if (grid[y+1][x] ==1)
{ neighbours++; }
if (grid[y-1][x-1] ==1)
{ neighbours++; }
if (grid[y-1][x+1] ==1)
{ neighbours++; }
if (grid[y-1][x] ==1)
{ neighbours++; }
return neighbours;
}
public LifeGrid(int x, int y, String filename)
{
grid = new int [y][x];
newgrid = new int[y][x];
File input = new File(filename);
Scanner sc;
try
{
sc = new Scanner(input);
}
catch (FileNotFoundException e)
{
System.out.println("File error");
return;
}
for (y=0; y< getY(); y++)
{
String line = sc.nextLine();
for(x = 0; x < getX(); x++)
{
if (line.charAt(x) == '*')
{
grid[y][x] = 1;
}
else
{
grid[y][x] = 0;
}
}
}
}
public void run()
{
show();
while(getcurrentgen() < 3)
{
setup();
grid = newgrid;
currentgen++;
show();
}
}
public void setup()
{
for (int y = 0; y < getY(); y++)
{
for (int x = 0;x < getX();x++)
{
if (grid[y][x]== 1)
{
if (Neighbours(x,y) < 2)
{
newgrid[y][x] = 0;
}
if (Neighbours(x,y) > 3)
{
newgrid[y][x] = 0;
}
if (Neighbours(x,y) == 3 || Neighbours(x,y) == 2)
{
newgrid[y][x] = 1;
}
}
if(grid[y][x]==0)
{
if(Neighbours(x,y) == 3)
{
newgrid[y][x]= 1;
}
}
}
}
}
public void show()
{
for(int y =0; y < getY(); y++)
{
for(int x = 0; x < getX(); x++)
{
System.out.print(grid[y][x]);
}
System.out.println();
}
System.out.println("Current generation: "+getcurrentgen());
}
}
看看這篇文章,[約翰·康威在的Java Swing生命遊戲(http://java-articles.info/articles/?p=504 ),看看生活是如何計算在邊界上的。 – 2014-11-21 21:03:52