public cell getCell(int x, int y){
	int myx; int myy;
	if(x >= xmin && x < xmax){myx = x-xmin;}else{myx = -1;}
	if(y >= ymin && y < ymax){myy = y-ymin;}else{myy = -1;}
	if(myy == -1 || myx == -1){ return new cell();}
	else{ return culture[myx][myy];}
}