// 搜寻路径
searchTrack : function(piece) {
if (this.isNear(piece)) {
this.linkTrack(piece);
return;
}
if (this.isReach(piece) || this.isReach2(piece)) {
this.linkTrack(piece);
return;
}
},
// 是否相邻
isNear : function(piece) {
var a = (Math.abs(piece.x - this.x) == 1) && (piece.y == this.y)
|| (Math.abs(piece.y - this.y) == 1) && (piece.x == this.x);
return a;
},
// 直线
isStraightReach : function(piece) {
//alert("isStraightReach");
if (this.isNear(piece)) {
return true;
}
var a = false;
var b = false;
// 沿y轴方向搜索
if (this.x == piece.x) {
//alert("!!!!!!!!!!!");
for (var i = this.min(this.y, piece.y) + 1; i < this.max(this.y, piece.y); i ++) {
//alert("this.x == piece.x: " + piece.x + "," + i);
if (this.game.pieceMap.get(piece.x + "," + i).isPass()) {
a = true;
this.game.trackList.push(this.game.pieceMap.get(piece.x + "," + i));
continue;
} else {
a = false;
this.game.trackList = [];
return a;
}
}
}
// 沿x轴方向搜索
if (this.y == piece.y) {
//alert("!!!!!!!!!!!");
for (var i = this.min(this.x, piece.x) + 1; i < this.max(this.x, piece.x); i ++) {
//alert("this.y == piece.y: " + i + "," + piece.y);
if (this.game.pieceMap.get(i + "," + piece.y).isPass()) {
b = true;
this.game.trackList.push(this.game.pieceMap.get(i + "," + piece.y));
continue;
} else {
b = false
this.game.trackList = [];
return b;
}
}
}
return a || b;
},
// 拐一次弯搜索
isReach1 : function(piece) {
//alert("isReach1");
var corner_1 = this.game.pieceMap.get(this.x + "," + piece.y);
var corner_2 = this.game.pieceMap.get(piece.x + "," + this.y);
var _this = this;
if ((_this.isStraightReach(corner_1))
&& (corner_1.isStraightReach(piece))
&& corner_1.isPass()) {
//alert("corner_1: " + this.x + "," + piece.y);
this.game.trackList.push(corner_1);
return true;
}
if ((_this.isStraightReach(corner_2))
&& (corner_2.isStraightReach(piece))
&& corner_2.isPass()) {
//alert("corner_2: " + piece.x + "," + this.y);
this.game.trackList.push(corner_2);
return true;
}
return false;
},
// 直接或拐一次弯搜索
isReach : function(piece) {
var a = this.isStraightReach(piece);
var b = this.isReach1(piece);
return a || b;
},
// 拐两次弯搜索
isReach2 : function(piece) {
// 沿x轴正向搜索
for (var i = this.x + 1; i < 17; i ++) {
if (!this.game.pieceMap.get(i + "," + this.y).isPass()) {
this.game.trackList = [];
break;
} else if (this.game.pieceMap.get(i + "," + this.y).isReach(piece)
&& this.game.pieceMap.get(i + "," + this.y).isPass()) {
this.game.trackList.push(this.game.pieceMap.get(i + "," + this.y));
return true;
}
}
// 沿x轴搜索
for (var i = this.x - 1; i >= 0; i --) {
if (!this.game.pieceMap.get(i + "," + this.y).isPass()) {
this.game.trackList = [];
break;
} else if (this.game.pieceMap.get(i + "," + this.y).isReach(piece)
&& this.game.pieceMap.get(i + "," + this.y).isPass()) {
this.game.trackList.push(this.game.pieceMap.get(i + "," + this.y));
return true;
}
}
// 沿y轴搜索
for (var i = this.y - 1; i >= 0; i --) {
if (!this.game.pieceMap.get(this.x + "," + i).isPass()) {
this.game.trackList = [];
break;
} else if (this.game.pieceMap.get(this.x + "," + i).isReach(piece)
&& this.game.pieceMap.get(this.x + "," + i).isPass()) {
this.game.trackList.push(this.game.pieceMap.get(this.x + "," + i));
return true;
}
}
// 沿y轴正向搜索
for (var i = this.y + 1; i < 12; i ++) {
if (!this.game.pieceMap.get(this.x + "," + i).isPass()) {
this.game.trackList = [];
break;
} else if (this.game.pieceMap.get(this.x + "," + i).isReach(piece)
&& this.game.pieceMap.get(this.x + "," + i).isPass()) {
this.game.trackList.push(this.game.pieceMap.get(this.x + "," + i));
return true;
}
}
return false;
},