cocos3——8.实现初学者指南

function createClipNode(node, stencil, inverted) {
    var clip_node = new cc.ClippingNode();
    // 设置模板节点（就是要裁剪的区域）
    clip_node.stencil = stencil;
    // 加入要被裁剪掉的节点（显示的内容）
    clip_node.addChild(node);
    if (inverted != undefined) {
        // 设置反转（由于我们须要保留模板区域外面的内容，裁剪掉区域里的内容）
        clip_node.setInverted(inverted);
    }

    clip_node._stencil = stencil;
    return clip_node;
}

    // create clip node
    var mask = cc.LayerColor.create(cc.color(0, 0, 0, ui.mask_a), ui.screen_width, ui.screen_height);
    var stencil = cc.LayerColor.create(cc.color.GREEN, 100, 100);
    stencil.ignoreAnchorPointForPosition(false);
    this.clip_node = createClipNode(mask, stencil, true);
    this.addChild(this.clip_node, ui.mask_z);

node.clipNode = function (ref) {
    this.clip_ref = ref;
    var stencil = this.clip_node.stencil;
    if (ref) {
        stencil.setAnchorPoint(ref.getAnchorPoint());
        stencil.setContentSize(ref.getContentSize());
        stencil.setPosition(ref.getParent().convertToWorldSpace(ref.getPosition()));
    } else {
        // set out of screen
        stencil.setPosition(cc.p(10000, 10000));
    }
}

// local storage
var storage = {
    ls: cc.sys.localStorage,
};

storage.set = function (key, value) {
    this.ls.setItem(key, value);
}

storage.get = function (key) {
    var value = this.ls.getItem(key);
    if (value != '') {
        return value;
    }
}

storage.remove = function (key) {
    this.ls.removeItem(key);
}

// global interface
var guide = {
    node: node,
};

// arrow: // 0 down, 1 right, 2 up, 3 left
guide.steps = [
    // 0
    {
        name: 'btn_right',
        str: '请按住button，控制力度，将沙包扔进红色区域。',        arrow: 1,    },    // ...];// 获取上次引导完毕的步数guide.cur_step = storage.get('guide') || 0;

guide.start = function (step) {
    if (step == this.cur_step) {
        console.log('guide start:', step, ',', this.cur_step);

        this.started = true;
        this._show(true);
        var info = this.steps[this.cur_step];
        this.node.updateData(info);
    }
}

guide.end = function (step) {
    if (!this.started) {
        return;
    }
    this.started = false;

    if (step == undefined) {
        step = this.cur_step;
    }
    if (step == this.cur_step) {
        console.log('guide end:', step, ',', this.cur_step);

        storage.set('guide', ++this.cur_step);
        this._show(false);
    }
}

guide._show = function (show) {
    if (show) {
        if (!this.node.getParent()) {
            this.node.init();
            ui.scene.addChild(this.node);
        }
    }
    this.node.visible = show;
}