java

[经验] Cocos Creator使用笔记 --- 俄罗斯方块 (1)

橙三吉。 提交于 2021-02-19 17:15:11
一: 实现 物体匀速掉落   这是我在做俄罗斯方块的时候遇到的一个问题, 因为原来的方块的掉落是每秒掉落一个像素点, 但是这样看起来的话会是一卡一卡的, 为了让方块在掉落的过程中看起来更加的流畅, 于是我决定在游戏的主逻辑处实现如下功能 /* * * 方块匀速下降 */ update: function (dt){ this .speedy = 1 ; this .schedule( this .down_move, this .speed* dt); }, /* * * 方块下落 */ down_move(){ // 大范围内加一个加一个检测,防止重合 if ( this .gamestate === 0 ){ this .node.y -= this .speedy; this .i -= 1 ; console.log( this .i); this .choose(); // 移动时降落反应的延迟导致重叠检 for (let i=0;i<4;i++ ){ if ( this .box[ this .one[i]][ this .two[i]] === 1 ){ this .i++ ; this .choose(); } } this .check(); } }, 但是这样的话, 方块虽然是会匀速下降了, 但是却不会像原来那样碰到游戏窗口底部就停下来, 于是,

搭建互联网架构学习--001--前言

北城以北 提交于 2021-02-19 17:13:29
前言: 自己也参与过app上的前后端分离项目,说是项目,其实就是app上一个新的功能。和其他功能不相干,所以不是在公司app项目基础上做的新增,而是一个单独的maven项目,具体到代码,自己参与的还只是CRUD,写service,以至于再去面试,别人问到这个前后端分离的一些具体问题,自己就答不上来。离开了上家公司,所以想把前后端分离模式下的一些细节问题弄懂。在网上买的这个教程。题目是《从无到有搭建中小型互联网公司后台服务架构与运维架构》,感觉这个正是自己想要了解的。学学吧,这里做一些记录,以便日后使用查阅。如有错误,请指教,谢谢! 这是课程介绍的内容: 本课程主要是针对如何从无到有搭建中小型互联网公司后台服务架构和运维架构的课程,课程所涉及的内容均是当前应用最广泛的技术和工具。本课程所讲解的技术体系已经在多个中小型互联网公司中实战运行使用,目前运行已经非常稳定,数据量也是在不断持续增加。并且,这个技术体系也正在被其他很多互联网公司应用,希望通过此课程,让大家能快速熟练掌握各个技术,并且能实际应用到项目中。课程将会通过实际案例讲解,并且会提供完整的视频案例源码供学员学习使用,同时有需要的企业或学员可以直接拿本套教学案例代码来使用或者二次开发。 本课程设计的技术及工具如下: 后台服务架构:dubbo、spring-boot、spring mvc、spring-security

Spring RSocket:基于服务注册发现的 RSocket 负载均衡

怎甘沉沦 提交于 2021-02-19 17:07:19
作者 | 雷卷 来源| 阿里巴巴云原生公众号 RSocket 分布式通讯协议是 Spring Reactive 的核心内容,从 Spring Framework 5.2 开始,RSocket 已经是 Spring 的内置功能,Spring Boot 2.3 也添加了 spring-boot-starter-rsocket,简化了 RSocket 的服务编写和服务调用。RSocket 通讯的核心架构中包含两种模式,分别是 Broker 代理模式和服务直连通讯模式。 Broker 的通讯模式更灵活,如 Alibaba RSocket Broker,采用的是事件驱动模型架构。而目前更多的架构则是面向服务化设计,也就是我们常说的服务注册发现和服务直连通讯的模式,其中最知名的就是 Spring Cloud 技术栈,涉及到配置推送、服务注册发现、服务网关、断流保护等等。在面向服务化的分布式网络通讯中,如 REST API、gRPC 和 Alibaba Dubbo 等,都与 Spring Cloud 有很好地集成,用户基本不用关心服务注册发现和客户端负载均衡这些底层细节,就可以完成非常稳定的分布式网络通讯架构。 RSocket 作为通讯协议的后起之秀,核心是二进制异步化消息通讯,是否也能和 Spring Cloud 技术栈结合,实现服务注册发现、客户端负载均衡,从而更高效地实现面向服务的架构

C# - Reading a long from Java's DataOutputStream

|▌冷眼眸甩不掉的悲伤 提交于 2021-02-19 15:33:01
问题 I'm using the DataOutputStream#WriteLong method in the java programming language to write a long to a stream, and I need to be able to read it from C# using the BinaryReader class from C# to try to read the data, the BinaryReader is connected to a NetworkStream that uses the TcpClient socket. The java DataInputStream#ReadLong method is used to read the long value sent from the DataOutputStream in Java, however I'm trying to use the BinaryReader class to read this value. Here's the method I

Java 在 Word 里面添加多行水印图片

半腔热情 提交于 2021-02-19 15:13:31
Word中设置水印效果时,不论是文本水印或者是图片水印都只能添加单个文字或者图片到Word页面,效果比较单一,本文通过Java代码示例介绍如何在页面中添加多行图片水印效果,即水印效果以多个图片平铺到页面。 思路及方法: 获取Word页眉,添加图片到页眉段落,并复制图片。 程序环境: 使用spire.doc.jar,版本3.9.0 import com.spire.doc.*; import com.spire.doc.documents.Paragraph; import com.spire.doc.documents.TextWrappingStyle; import com.spire.doc.fields.DocPicture; //java项目源码www.fhadmin.org public class ImageWatermark { public static void main(String[] args) { //加载Word文档 Document doc=new Document(); doc.loadFromFile("input.docx"); //加载图片 DocPicture picture = new DocPicture(doc); picture.loadImage("logo.png"); picture.setTextWrappingStyle

Updating Codename one in Eclipse

為{幸葍}努か 提交于 2021-02-19 15:04:33
问题 I can't seem to get ToastBar in my build, my CodenameOne.jar doesn't have the class. I've tried updating libs from project properties and it says it's all up to date. My eclipse says I have Codename 3.1 installed too, shouldn't it be 3.3 now? Is there something in particular I need to do to get the latest Codename one jar? 回答1: That API wasn't released yet and is only available in the source code at this time. It will be available within a couple of weeks as we try to release every 3-4 weeks.

Child class method cannot be accessed when a child class object has a reference of parent type and parent class dont have the same child class method [duplicate]

烂漫一生 提交于 2021-02-19 14:57:46
问题 This question already has answers here : Calling a subclass method from superclass (5 answers) Java Inheritance: Why calling a method at the parent constructor level, calls the overridden child method? (2 answers) Closed 2 years ago . Could not access methods from child class using the below line, Parent p = new Child(); p.print(); Suppose I have a method print() inside Child class and the same method is NOT there in the Parent class. In this scenario we cannot access child class method print

Child class method cannot be accessed when a child class object has a reference of parent type and parent class dont have the same child class method [duplicate]

喜夏-厌秋 提交于 2021-02-19 14:55:25
问题 This question already has answers here : Calling a subclass method from superclass (5 answers) Java Inheritance: Why calling a method at the parent constructor level, calls the overridden child method? (2 answers) Closed 2 years ago . Could not access methods from child class using the below line, Parent p = new Child(); p.print(); Suppose I have a method print() inside Child class and the same method is NOT there in the Parent class. In this scenario we cannot access child class method print

Child class method cannot be accessed when a child class object has a reference of parent type and parent class dont have the same child class method [duplicate]

落花浮王杯 提交于 2021-02-19 14:54:23
问题 This question already has answers here : Calling a subclass method from superclass (5 answers) Java Inheritance: Why calling a method at the parent constructor level, calls the overridden child method? (2 answers) Closed 2 years ago . Could not access methods from child class using the below line, Parent p = new Child(); p.print(); Suppose I have a method print() inside Child class and the same method is NOT there in the Parent class. In this scenario we cannot access child class method print

Child class method cannot be accessed when a child class object has a reference of parent type and parent class dont have the same child class method [duplicate]

邮差的信 提交于 2021-02-19 14:51:08
问题 This question already has answers here : Calling a subclass method from superclass (5 answers) Java Inheritance: Why calling a method at the parent constructor level, calls the overridden child method? (2 answers) Closed 2 years ago . Could not access methods from child class using the below line, Parent p = new Child(); p.print(); Suppose I have a method print() inside Child class and the same method is NOT there in the Parent class. In this scenario we cannot access child class method print