(function() {
    if(typeof PIXI!="object") {
        if(typeof loadfail=="function") {
            loadfail("libtapfx.js: PIXI(type of "+(typeof PIXI)+") is not an object");
        } else {
            window.alert("libtapfx.js: PIXI(type of "+(typeof PIXI)+") is not an object");
        }
        return;
    }
    if(typeof libmain!="object") {
        if(typeof loadfail=="function") {
            loadfail("libtapfx.js: libmain(type of "+(typeof libmain)+") is not an object");
        } else {
            window.alert("libtapfx.js: libmain(type of "+(typeof libmain)+") is not an object");
        }
        return;
    }

    var libtapfx= {};

    libmain.scenes.tap_fx.root.interactiveChildren=false;
    libmain.scenes.tap_fx.root.eventMode="static";
    libmain.scenes.tap_fx.root.on("tap", add_tap_fx);
    libmain.scenes.tap_fx.root.on("mousedown", add_tap_fx);

    libmain.scenes.tap_fx.judge_bg=new PIXI.Sprite({"texture": PIXI.Texture.WHITE});
    libmain.scenes.tap_fx.judge_bg.x=0;
    libmain.scenes.tap_fx.judge_bg.y=0;
    libmain.scenes.tap_fx.judge_bg.anchor.set(0, 0);

    libmain.scenes.tap_fx.root.addChildAt(libmain.scenes.tap_fx.judge_bg, 0);

    //libmain.settings.hud.show_tapfx

    // resize handler
    libtapfx.onresize=function() {
        var res=[document.body.clientWidth, document.body.clientHeight, 0, 0];
        if(libmain.settings.render.use_fixed_aspect_ratio) {
            res=libutil.calcresize(document.body.clientWidth, document.body.clientHeight, libmain.settings.render.fixed_ratio);
        }
        libmain.scenes.tap_fx.judge_bg.width=res[0];
        libmain.scenes.tap_fx.judge_bg.height=res[1];
    };
    window.addEventListener("resize", libtapfx.onresize);
    requestAnimationFrame(libtapfx.onresize);

    window.libtapfx=libtapfx;
    console.log("[libtapfx] initialized successfully.");
})();