LayaAir引擎——（九）

var h = new Array();
var j = new Array();
var xbCursor = 0;

function xbinit() {
    xbinitName();
    xbRectChoose();
    xbRectChoosePic();
    xbSetVisible(0);
    Laya.stage.on(laya.events.Event.KEY_DOWN,this,xbOnkeyDown);
}
function xbinitName() {
    var d1 = new laya.display.Text();
    d1.text = "男性";
    d1.x = 400;
    d1.y = 300;
    d1.fontSize = 20;
    d1.color = "red";
    Laya.stage.addChild(d1);

    var d2 = new laya.display.Text();
    d2.text = "女性";
    d2.x = 400;
    d2.y = 330;
    d2.fontSize = 20;
    d2.color = "red";
    Laya.stage.addChild(d2);
}
function xbRectChoose() {
    for(var i = 0 ;i < 2 ;i++){
        h[i] = new laya.display.Sprite();
        h[i].graphics.drawRect(400, 300 + 30 * i, 2 * 20 + 5 + 10, 20, "white");
        h[i].alpha = 0.25; 
        h[i].visible = true;
        Laya.stage.addChild(h[i]);
    }
}
function xbRectChoosePic() {
    for(var i = 0 ;i < 2 ;i++){
        j[i] = new laya.display.Sprite();
        j[i].loadImage("rectChoosePic.png",400 + 2 * 20 + 5 , 305 + 30 * i, 10,10);
        j[i].visible = true;
        Laya.stage.addChild(j[i]);
    }
}
function xbOnkeyDown(e) {
    switch(e.keyCode){
        case 38:{
            if ( (xbCursor - 1) <= 0 ) {
                xbCursor = 0;
            }else{
                xbCursor--;
            }
            break;
        }
        case 40:{
            if ( (xbCursor + 1) >= 1 ) {
                xbCursor = 1;
            }else{
                xbCursor++;
            }
            break;
        }
    }
    xbSetVisible(xbCursor);    
    console.log(xbCursor);
}
function xbSetVisible(index) {
    for(var i = 0;i < 2; i++){
        if (i == index) {
            h[i].visible = true;
            j[i].visible = true;
        }else{
            h[i].visible = false;
            j[i].visible = false;
        }
    }
}