public Tile cellContent(GamePostion postion)
{
if(this.withinBounds(postion)){
return this.cells[postion.x,postion.y];
}
return null;
}
public List<GamePostion> availableCells()
{
List<GamePostion> cells = new List<GamePostion>();
for(int i = 0; i < this.size;i++){
for(int j = 0; j < this.size;j++){
Tile t = this.cells[i,j];
if(t == null){
GamePostion gp = new GamePostion(i,j);
cells.Add( gp);
}
}
}
return cells;
}
public Hashtable buildTraversals(GamePostion vector)
{
Hashtable reslut = new Hashtable();
List<int> x = new List<int>();
List<int> y = new List<int>();
for(int i = 0;i < size; i++){
x.Add(i);
y.Add(i);
}
if(vector.x == 1)
x.Reverse();
if(vector.y == 1)
y.Reverse();
reslut.Add("x",x);
reslut.Add("y",y);
return reslut;
}
public Hashtable findFarthestPosition(GamePostion cell,GamePostion vector)
{
// Debug.Log("findFarthestPosition cell x:"+cell.x + " y:"+cell.y);
GamePostion previous;
do{
previous = cell;
cell = new GamePostion(previous.x+ vector.x,previous.y+ vector.y);
}while(grid.withinBounds(cell) && grid.cellAvailable(cell));
Hashtable result = new Hashtable();
result.Add("farthest",previous);
result.Add("next",cell);
// Debug.Log("之前的坐标farthest x:"+ previous.ToString());
// Debug.Log("最近的坐标next x:"+ cell.ToString());
return result;
}
public bool tileMatchesAvailable()
{
Tile tile;
for(int x=0;x<size;x++){
for(int y=0;y<size;y++){
tile = grid.cellContent(new GamePostion(x,y));
if(tile != null){
for(int direction=0;direction<4;direction++){
GamePostion vector = getVector((MyDirection)direction);
GamePostion cell = new GamePostion(x+vector.x,y+vector.y);
Tile other = grid.cellContent(cell);
if(other !=null){
Tile t = (Tile)other;
Tile t1 =(Tile)tile;
if(t.value == t1.value){
return true;
}
}
}
}
}
}
return false;
}
public bool positionsEqual(GamePostion first,GamePostion second)
{
return first.x == second.x && first.y == second.y;
}
public void moveTile(Tile tile,GamePostion cell)
{
// Debug.Log("moveTile:" + cell.ToString());
grid.cells[tile.x,tile.y] = null;
Tile o = grid.cells[tile.x,tile.y];
// Debug.Log("moveTile null :"+o == null);
grid.cells[cell.x,cell.y] = tile;
// Debug.Log("moveTile hou :"+grid.cells[cell.x,cell.y].ToString());
// Debug.Log("before up:"+tile.ToString());
tile.updatePostion(cell);
// Debug.Log("after up:"+tile.ToString());
}
public void move(MyDirection direction)
{
// Debug.Log("移动");
GamePostion vector = getVector(direction);
Hashtable traversals = buildTraversals(vector);
prepareTiles();
bool moved = false;
Tile tile;
List<int> xList = (List<int>)traversals["x"];
List<int> yList = (List<int>)traversals["y"];
for(int i=0;i<size;i++){
int x = xList[i];
for(int j=0;j<size;j++){
int y = yList[j];
GamePostion cell = new GamePostion(x,y);
tile = grid.cellContent(cell);
if(tile != null){
Hashtable postions = findFarthestPosition(cell,vector);
Tile next = grid.cellContent((GamePostion)postions["next"]);
if(next !=null && next.value == tile.value && next.mergedFrom == null){
// Debug.Log("找到合并的tile :"+tile.ToString());
// Debug.Log("找到合并的next :"+next.ToString());
Tile merged = new Tile((GamePostion)postions["next"],tile.value*2);
merged.mergedFrom = new Tile[]{tile,next};
grid.insertTile(merged);
grid.removeTile(tile);
tile.updatePostion((GamePostion)postions["next"]);
score += merged.value;
if(merged.value == 2048){
//TODO yingle
}
}else{
moveTile(tile,(GamePostion)postions["farthest"]);
}
if(!positionsEqual(cell,new GamePostion(tile.x,tile.y))){
moved = true;
}
}
}
}
if(moved){
addRandomTile();
if(!movesAvailable()){
// Debug.Log("GameOver");
this.over = true;
}
// actuate();
// Debug.Log("move le");
}
actuate(moved);
Debug.Log("移动结束");
}
public GamePostion getVector(MyDirection direction)
{
GamePostion result;
switch(direction){
case MyDirection.DirectionUp:
result = new GamePostion(0,-1);
break;
case MyDirection.DirectionRight:
result = new GamePostion(1,0);
break;
case MyDirection.DirectionDown:
result = new GamePostion(0,1);
break;
case MyDirection.DirectionLeft:
result = new GamePostion(-1,0);
break;
default:
result = new GamePostion(0,0);
break;
}
return result;
}
public bool cellOccupied(GamePostion postion)
{
//Debug.Log("cellOccupied x:"+postion.x + " y:"+postion.y+" bool:"+(this.cellContent(postion) != null));
return this.cellContent(postion) != null;
}
public bool cellAvailable(GamePostion position)
{
return !this.cellOccupied(position);
}
public bool withinBounds(GamePostion position)
{
// Debug.Log("withinBounds x:"+position.x + " y:"+position.y+" "+(position.x >= 0 && position.x < this.size && position.y >= 0 && position.y < this.size));
return position.x >= 0 && position.x < this.size && position.y >= 0 && position.y < this.size;
}
public void updatePostion(GamePostion position)
{
// Debug.Log("updatePostion:" + position.ToString() + " yuan x:"+this.x+" y:"+this.y);
this.x = position.x;
this.y = position.y;
}
public Tile(GamePostion postion,int value)
{
this.x = postion.x;
this.y = postion.y;
this.value = value;
}