Z's Blog

Shenzhen and Hong Kong are separated by just a river. Although I had long planned to visit Hong Kong, I was unable to do so for the past two to three years due to the pandemic. Now that the pandemic restrictions have eased this year, passing between Hong Kong and the mainland has also become relatively convenient, so I’ve included a trip to Hong Kong in my schedule.

I went to Hong Kong for a weekend trip with my wife. Before we went, I made some travel plans and arrangements that can serve as a reference for first-time travelers to Hong Kong.

Remote building is a very convenient way to package iOS in UE, allowing code compilation only on a Mac without COOKing resources, which greatly reduces the hardware requirements for Mac.

Moreover, Macs are quite expensive. In a traditional setup, if multiple independent iOS package build processes are needed, it usually requires purchasing several separate Mac machines for deployment, leading to high hardware costs.

Additionally, the iOS development environment often needs to be updated with iOS system iterations. Every year at WWDC, a new version of iOS is released, requiring support from the latest XCode, which in turn depends on the latest MacOS—a nested chain of dependencies. If the number of Mac build environments increases, updating the build environments of these machines also becomes a cumbersome repetitive task.

Remote building for iOS can effectively solve this issue. A single independent Mac can simultaneously support multiple iOS build processes, and if an update is needed, it only needs to be handled on one machine. Furthermore, the time it takes to compile code is relatively fixed, and incremental compilation can be performed. In theory, as long as not all machines execute a full compilation at the same time, the performance pressure on the Mac won’t be that great.

There are also articles on enabling remote building for iOS in the blog: UE Development Notes: Mac/iOS Edition, which can be referred to for basic configuration.

However, the default implementation of iOS remote building in UE also presents several issues in actual use, failing to achieve a fully automated process from deployment to building. This article aims to optimize the pain points of remote building in real project applications.

To do a good job, one must first sharpen their tools! AIGC tools represented by ChatGPT and Stable Diffusion have emerged, and the AI wave is sweeping across various industries. As developers, how to leverage AI capabilities to improve efficiency in tasks is a question worth studying.

It is crucial to note that the content generated by GPT may not be entirely accurate and can contain inaccuracies. However, its potential lies in the possibility of achieving a general-purpose AI assistant. No one can possess expert-level knowledge in all fields, but effectively utilizing GPT in unfamiliar domains can significantly lower the entry costs.

In this article, I will introduce some cases of using GPT to assist in work, life, and learning, as well as explore application scenarios for secondary development using the GPT API. At the end of the article, I will share some Prompts I use and recommend some useful GPT tools, as well as a solution for encapsulating Azure OpenAI services using Cloudflare Worker.

DevOps is a philosophy based on automation for Continuous Integration (CI) and Continuous Deployment (CD), optimizing all aspects of development, testing, and operations. It emphasizes the integration of software development, testing, and operations, reducing communication costs between departments or processes to achieve rapid and high-quality releases and iterations.

Although the development situation in the gaming field differs significantly from traditional internet development, leveraging the concept of DevOps to integrate all production elements of a project into automation can greatly enhance efficiency.

This article will introduce the basic concepts of automation in UE and share some of my attempts and actual engineering practices regarding automation builds in Unreal Engine.

Recently, there is often a strange sense of anxiety. After a period of self-observation and reflection, I believe it is necessary to confront these issues and attempt to provide answers.

This article is a thought experiment that examines and analyzes the current state of life and its problems, summarizing the ideological tools for guiding life and work. As a personal methodology, it contains a large amount of subjective content.

In game project development, a large number of developers from various aspects such as development, art, planning, and outsourcing will be involved. For reasons of resource security and information confidentiality, complex permission controls and synchronization logic are usually implemented.

However, leaving aside permission control and focusing on the resources themselves, in UE, resources are upward compatible, meaning resources can be opened directly with the same version engine or a higher version engine. This means that distributed resources can be used directly in other projects. Therefore, ensuring the security of resources during the development phase is a key focus.

This article provides an idea for encrypting the original UASSET resources in the project and introduces the basic principles that can be used for resource encryption. However, publicly disclosing the specific encryption implementation would be akin to running naked, so this article will only provide an analysis of the uasset resource structure and ideas for implementing encryption, but will not provide specific implementation code.

When using the Unreal Engine development tool, a significant number of tasks involve resource processing and data export needs. These tasks need to be performed frequently and automatically, often integrated into a CI/CD system.

In the specific implementation, the Commandlet mechanism of UE is utilized to drive the engine in a command-line manner, performing custom behaviors.

Taking the Commandlet features supported in the plugin I developed as an example:

1. HotPatcher: Export basic package information, pack patches
2. ResScannerUE: Incremental scanning of changed resources
3. HotChunker: Standalone packaging of Chunk
4. libZSTD: Training Shader dictionaries
5. ExportNavMesh: Export NavMesh data

Commandlet allows for easier integration into CI/CD to achieve automation.

In this article, I will primarily introduce the Commandlet mechanism of UE, analyze its implementation principles, and provide some development tips and insights from my development process.

Additionally, this is the second article in my UE Plugin and Tool Development series, which will continue to be updated, so stay tuned.

I previously wrote an article introducing UE’s default unpacking method (UE Hot Update: Splitting the Base Package), but the default unpacking method in UE is not flexible enough for large-scale resource projects and cannot meet the refined management needs of super-large-scale resource projects.

To address the issues with UE’s default packaging and resource splitting pain points, I developed an extension based on HotPatcherCore that can solve the drawbacks of the default unpacking process, making it sufficiently flexible and powerful. There’s an article on the blog that introduces its overall implementation mechanism: A Flexible and Non-Intrusive Base Package Splitting Solution.

HotChunker can be integrated into UE’s default packaging process non-intrusively, requiring no manual handling. As long as the default UE packaging is done, it will automatically trigger HotChunker’s unpacking process, achieving resource cooking, packaging, and automatic copying to the StagedBuilds directory.

This article will focus on how to configure resource splitting using HotChunker, automate builds, minimize resource redundancy, and implement parallel packaging.

Memory optimization is a frequent focus in game development. To avoid excessive memory allocation that triggers an OOM (Out of Memory) to be forcibly terminated by the system, common optimization methods typically start from the usage perspective, enhancing memory utilization efficiency by trimming unnecessary features and controlling resource loading.

However, there is another approach to increase the threshold for triggering OOM, allowing the system to permit our app to allocate more memory. In the new iOS versions, Apple has introduced new memory features for apps, allowing them to extend addressable space and increase allocatable memory.

In this article, I will explore how to leverage these features in UE to enhance the total allocatable memory for games on the iOS platform.

During the process of project development using Unreal Engine, various types of plugins are often developed and integrated to extend the engine, thereby fulfilling different requirements. For developers, understanding the operational mechanism is more important than using the tools. Thus, it is necessary to understand the principles behind the integration and development of plugins.

Previously, I also developed some tools and plugins for UE, and I hope to write a series of related articles summarizing the common technical content related to UE plugin and tool development and sharing some of my thoughts and functional scaffolding during plugin development. The goal is to achieve the desired functionality with minimal code, minimal invasiveness, and the best implementation strategies.