实现代码比较容易一百多行，不过算法核心在astar.js了，界面核心在ht.js里面了，我只需要构建网格信息，只需监听用户点击，然后调用astar.js进行最短路径计算，将结果通过动画的方式呈现出走动的过程，所有代码如下：
function init() {
w = 40; m = 20; d = w * m / 2;
gridRows = [];
dm = new ht.DataModel();
g3d = new ht.graph3d.Graph3dView(dm);
g3d.setGridVisible(true);
g3d.setGridColor('#BBBBBB');
g3d.setGridSize(m);
g3d.setGridGap(w);
g3d.addToDOM();
g3d.sm().setSelectionMode('none');
anim = startBall = endBall = null;
g3d.getView().addEventListener(ht.Default.isTouchable ? 'touchstart' : 'mousedown', function(e){
if(!anim){
var p = g3d.getHitPosition(e);
var x = Math.floor((p[0] + d)/ w);
var y = Math.floor((p[2] + d)/ w);
var endBall = dm.getDataByTag("cell_" + x + "_" + y);
if(endBall && endBall.s('batch') !== 'wall'){
if(startBall.a('x') === x && startBall.a('y') === y){
return;
}
var g = new Graph(gridRows, {
diagonal: formPane.v('diagonal')
});
var start = g.grid[startBall.a('x')][startBall.a('y')];
var end = g.grid[ x][y];
var result = astar.search(g, start, end, {
closest: formPane.v('closest')
});
if(!result.length){
return;
}
x = result[result.length-1].x;
y = result[result.length-1].y;
endBall = dm.getDataByTag("cell_" + x + "_" + y);
endBall.s('3d.visible', true);
startBall.s('3d.visible', false);
formPane.setDisabled(true);
anim = ht.Default.startAnim({
duration: 700,
finishFunc: function(){
for(var i=0; i
