Canvas Demo 3

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<language>Java</language>
The Game of Life is not your typical computer game. It is a 'cellular automaton', and was invented by Cambridge mathematician John Conway.

For a space that is 'populated':
*    Each cell with one or no neighbors dies, as if by loneliness. 
*    Each cell with four or more neighbors dies, as if by overpopulation. 
*    Each cell with two or three neighbors survives. 
For a space that is 'empty' or 'unpopulated'
*    Each cell with three neighbors becomes populated. 

<eval>
int[][] Spielfeld = new int[20][10];
Spielfeld[0][0] = 0;
Spielfeld[1][1] = 1;
Spielfeld[2][2] = 1;

void drawCell(int x, int y, boolean black){
  if(black) canvas.setColor(0,0,0); else 
            canvas.setColor(255,255,255);
  canvas.fillRect(x*25,y*25,25,25);           
}

void drawCells(){
  for(int x=0; x<20; x++)
   for(int y=0; y<10; y++)
    drawCell(x,y,Spielfeld[x][y] == 1);
}

void flipCells(){
  for(int x=0; x<20; x++)
   for(int y=0; y<10; y++)
    if (Spielfeld[x][y] == 1){
     Spielfeld[x][y] = 0;
     if(x>0) Spielfeld[x-1][y] = 1; 
     if(x<20) Spielfeld[x+1][y] = 1; 
     if(y>0) Spielfeld[x][y-1] = 1; 
     if(y<20) Spielfeld[x][y+1] = 1; 
    }
}


canvas.clear();

drawCells();
flipCells();
drawCells();
</eval>

<canvas></canvas>