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<!doctype html> <!doctype html>
<html lang=en-us> <html lang="en-us">
<head> <head>
<meta name="viewport" content="width=device-width, initial-scale=1"> <title>doylet.dev</title>
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<body> <body>
<!--
Color palette
#C16358
#BEBF5E
#8DBCA2
#519A8B
#DBAE55
-->
<header> <header>
<div style=""> <div>
<h1><a href="https://doylet.dev">doy<u style="text-decoration: none; color: #6BBAE4">-</u>lee <em class=title-note>// TODO: Doyle T.</em> </a></h1> <h1>doylet <em class=title-note>// doy-lee</em></h1>
<p>G'day, I'm a software developer that enjoys low-level programming.</p> <p>Low-level programming enthusiast. Practicing C/C++ daily. Passion for tools and the game development domain. Always curious and learning.</p>
</div> </div>
<div class=divider style="margin-bottom: 0.5em"></div>
</header> </header>
<main> <main>
<section aria-label="Contact Links"> <div><hr></div>
<div class=row> <section aria-label="Links">
<p class=row-key>Print Me!</p> <h2>Links</h2>
<p><a href="doylet_cv.pdf">doylet.dev/doylet_cv.pdf</a></p> <table>
</div> <tr>
<div class=row> <td>Email</td>
<p class=row-key>Email</p> <td><a href="cv.doylet.2380i@simplelogin.com">cv.doylet.2380i@simplelogin.com</a></td>
<p><a href="cv.doylet.2380i@simplelogin.com">cv.doylet.2380i@simplelogin.com</a></p> </tr>
</div>
<div class=row> <tr>
<p class=row-key>Gitea</p> <td>Gitea (Personal Projects)</td>
<p><a href="git.doylet.dev">https://git.doylet.dev</a></p> <td><a href="git.doylet.dev">https://git.doylet.dev</a></td>
</div> </tr>
<div class=row>
<p class=row-key>GitHub</p> <tr>
<p><a href="https://github.com/doy-lee">https://github.com/doy-lee</a></p> <td>Github (Open Source Work)</td>
</div> <td><a href="https://github.com/doy-lee">https://github.com/doy-lee</a></td>
</tr>
</table>
</section> </section>
<div><hr></div>
<section aria-label="About">
<h2>About</h2>
<p>
G'day, I'm a software developer who enjoys low-level programming. I have an interest
in building bespoke software using my own libraries, developing a "tech garden" so to speak.
That is a bunch of foundational libraries[<a href="#about-dn-library">1</a>] where I've
written and/or understood every line of code in them. Any bug is a bug in <i>my</i> source
code that I can go understand and fix.
</p>
<p>
Doing this is a nice forcing function that in turn provides an opportunity to learn about
different domains especially those involved in game development. Game development involves
the marrying of many programming disciplines with a reasonably high bar of quality that is
expected by end users and making games is fun and interesting!
</p>
<p>
I'm constantly learning and re-writing/improving[<a href="#about-reinventing-the-wheel">2</a>]
my foundational libraries as a form of training and
practice[<a href="#about-practice">3</a>]. In my experience each re-write has solidified my
understanding and improved the API design in that domain without fail.
</p>
<p>
I learn and take inspiration from the design philosophies of:
<ul class=bullet-points>
<li><strong><a href="https://handmade.network/manifesto">Handmade</a></strong> communities and friends (C. Muratori, R. Fleury, Wookash) for their initiatives to teach and cultivate high quality software.</li>
<li><strong><a href="https://tinygrad.org">TinyGrad</a></strong> for democratising ML through the relentless pursuit of simplification.</li>
<li><strong><a href="https://radgametools.com">Epic Game Tools (formerly RAD Game Tools)</a></strong> for consistently shipping high quality tooling trusted by the industry.</li>
</ul>
</p>
<small>
<ul class=citations>
<li id="about-dn-library">[1] Foundation Libraries <a href="https://git.doylet.dev/doylet/dn">git.doylet.dev/doylet/dn</a></li>
<li id="about-reinventing-the-wheel">[2] Reinventing the Wheel <a href="https://youtu.be/4B00hV3wmMY?t=292">Solving the Right Problems for Engine Programmers - Mike Acton‌ @ 4:52</a></li>
<li id="about-practice">[3] Practice <a href="https://youtu.be/4B00hV3wmMY?t=788">Solving the Right Problems for Engine Programmers - Mike Acton‌ @ 13:08</a></li>
</ul>
</small>
</section>
<div><hr></div>
<section aria-label="Work"> <section aria-label="Work">
<h2>Work</h2> <h2>Work</h2>
<div class=divider style="margin-bottom: 0.5em"></div>
<div> <div>
<div class=job-role style="border-color: #C16358"> <h3>Session (Private Messaging/Blockchain) [2024-2026]<img class=favicon src="assets/session-favicon.ico"></h3>
<p>2022 - CURR: C++ Senior Software Engineer, Agent Orientated Software <img class=favicon src="assets/aos-favicon.ico"> (AI)</p> <ul class=job-tech>
</div> <li>C++20</li>
<div class=job-role style="border-color: #BEBF5E"> <li>Python (Flask/UWSGI)</li>
<p>2020 - 2022: C++ Software Engineer, Agent Orientated Software <img class=favicon src="assets/aos-favicon.ico"> (AI)</p> <li>CMake</li>
</div> <li>Solidity (Smart Contracts)</li>
<sub><i>C++17, CMake, Docker, DDS+Kafka (distribution), discrete event simulators (game engine-esque)</i></sub> <li>Cryptonote</li>
</ul>
<ul>
<li class=job-role style="border-color: #519A8B">2024 - 2026: C++ Senior Software Engineer</li>
</ul>
<p> <p>
AOS creates creating trustable and explainable Session is a decentralised private messaging application that onion routes its messages
AI using <i>multi-agent systems</i> with the cognitive using the Session Node network. The Session Node network is powered by the Oxen blockchain
framework, <i>Beliefs, Desires and Intentions</i> (BDI). which allows operators to trustlessly join the network to store and route messages on
My role involves improving the AI toolchain such as behalf of Session. Operator tokens are escrowed by smart contracts and are rewarded for
improving cross-agent collaboration, forward planning, routing messages successfully.
scheduling and de-conflicting of agent intentionality,
its execution and distributed agent communication to
improve resilience in adversarial situations.
</p> </p>
<ul class=milestones> <p>
<li>Coordinating multiple toolchain upgrades of our in-house AI frameworks, end-to-end</li> I rejoined Session (formerly Oxen) in the blockchain team of 3 engineers, to assist the
<li>Added virtual-memory backed allocators for cache locality, reduced sys-calls and memory profiling</li> network migrate its nodes from the Oxen blockchain to a layer 2 blockchain, Arbitrum. This
<li>Co-implement protocol to distribute agents onto different routing technologies (DDS & Kafka)</li> involves porting the trustless functionality from Oxen's C++ implementation into Solidity.
<li>Responsible for the docs website with APIs & manuals, end-to-end for production releases</li> That is deployed on Arbitrum as well as designing and implementing the next stage, privacy
<li>Implement multiple discrete event simulators for verification of agent behaviours</li> preserving subscriptions that grant access to premium messaging features.
<li>Documenting best practices, patterns and tutorials for designing effective multi-agent systems</li> </p>
<li>Implement real-world system specs in a multi-agent architecture to highlight deficiencies in the development methodology leading to new protocols, e.g. researching interfaces for humans to effectively contribute into the agent decision making.</li> <p>
The migration had to occur on a live network in a way that minimises disruption of
the quality-of-service of users using Session. We migrated successfully in 2025
atomically switching over 1000+ nodes to change their source-of-truth from Oxen to
Arbitrum and simultaneously migrated escrowed liquidity to Arbitrum.
</p>
<ul class=bullet-points>
<li>Built smart contracts[<a href="#session-smart-contracts">1</a>] to allow operators to escrow a stake to join a decentralised network, receive rewards.</li>
<li>Designed a certificate/token[<a href="#session-payment-architecture">2</a>] based system to endow Session accounts with Pro features in a privacy preserving manner.</li>
<li>Wired up payment hooks from Apple and Google into the certificate based system for Pro membership.</li>
<li>Worked on a plugin system[<a href="#session-plugins">3</a>] for extensions such as bots and moderation in public group-chats.</li>
</ul>
<small>
<ul class=citations>
<li>Session Messenger <a href="https://getsession.org/">https://getsession.org/</a></li>
<li id="session-smart-contracts">[1] Smart Contracts <a href="https://github.com/Doy-lee/session-token-contracts/tree/doyle-manual-contract-interaction">github.com/Doy-lee/session-token-contracts/tree/doyle-manual-contract-interaction</a></li>
<li id="session-payment-architecture">[2] Payment Architecture <a href="https://github.com/session-foundation/session-pro-backend/tree/6bfea783644e4f2a77096fb2535465a7af86c5d0#architecture">github.com/session-foundation/session-pro-backend/tree/6bfea783644e4f2a77096fb2535465a7af86c5d0#architecture</a></li>
<li id="session-plugins">[3] Session Plugins <a href="https://github.com/Doy-lee/session-pysogs/blob/doyle-plugin-installers/plugins.md">github.com/Doy-lee/session-pysogs/blob/doyle-plugin-installers/plugins.md</a></li>
</ul>
</small>
</div>
<div>
<h3>Agent Orientated Software (AI/Robotics) [2020-2024]<img class=favicon src="assets/aos-favicon.ico"></h3>
<ul class=job-tech>
<li>C++17</li>
<li>CMake</li>
<li>Docker</li>
<li>DDS+Kafka (Data Distribution)</li>
<li>2D Discrete Event Simulator (ImGui, GLFW)</li>
</ul>
<ul>
<li class=job-role style="border-color: #C16358">2022 - 2024: C++ Senior Software Engineer</li>
<li class=job-role style="border-color: #BEBF5E">2020 - 2022: C++ Software Engineer</li>
</ul>
<p>
AOS aims to build trustable and explainable AI using <i>multi-agent systems</i> with the
cognitive framework, <i>Beliefs, Desires and Intentions</i> (BDI). My role involves
improving the AI toolchain such as improving cross-agent collaboration, forward planning,
scheduling and de-conflicting of agent intentionality, its execution and distributed agent
communication to improve resilience in adversarial situations.
</p>
<ul class=bullet-points>
<li>Coordinated multiple toolchain upgrades of our in-house AI frameworks, end-to-end.</li>
<li>Added virtual-memory backed allocators for cache locality, reduced sys-calls and memory profiling.</li>
<li>Co-implemented protocol to distribute agents onto different routing technologies (DDS & Kafka).</li>
<li>Owned the docs website with APIs & manuals, end-to-end for production releases.</li>
<li>Implemented multiple discrete event simulators for verification of agent behaviours.</li>
<li>Documented best practices, patterns and tutorials for designing effective multi-agent systems.</li>
<li>Implemented real-world system specs in a multi-agent architecture to highlight deficiencies in the development methodology leading to new protocols, e.g. researching interfaces for humans to effectively contribute into the agent decision making.</li>
</ul> </ul>
<small> <small>
<ul class=citations> <ul class=citations>
<li>Agent Orientated Software <a href="https://aosgrp.com">aosgrp.com</a></li> <li>Agent Orientated Software <a href="https://aosgrp.com">aosgrp.com</a></li>
<li>Github <a href="https://github.com/jackagents/jack">github.com/jackagents/jack</a></li>
</ul> </ul>
</small> </small>
</div> </div>
<div> <div>
</div> <h3>Oxen (Privacy Software/Blockchain) [2018 - 2022]<img class=favicon src="assets/oxen-favicon-32x32.png"></h3>
<div> <ul class=job-tech>
<div class=job-role style="border-color: #8DBCA2"> <li>C++14</li>
<p>2018 - 2020: C++ Software Engineer, Oxen <img class=favicon src="assets/oxen-favicon-32x32.png"> (Blockchain)</p> <li>Boost</li>
</div> <li>CMake</li>
<sub><i>C++14, Boost, CMake, Docker, Android+Windows+Mac+Linux clients, Qt5, Monero Cryptonote & EPEE Levin P2P Protocol, Open Source Maintainer (Oxen), Libsodium (EC Cryptography)</i></sub> <li>Docker</li>
<li>Qt5</li>
<li>Cross Platform Builds</li>
<li>Open Source</li>
<li>Applied Cryptography (Cryptonote/Libsodium)</li>
</ul>
<ul>
<li class=job-role style="border-color: #8DBCA2">2018 - 2020: C++ Software Engineer</li>
</ul>
<p> <p>
Oxen is a non-for-profit, open-source company developing Oxen is a not-for-profit, open-source company developing privacy protocols and tools. I
privacy protocols and tools. I implemented[<a href="#oxen-git-commits">1</a>] a decentralized layer of servers known as
implemented[<a href="#oxen-git-commits">1</a>] the Service Node[<a href="#oxen-service-nodes">2</a>] network that distributes the
a decentralized layer of servers known as the Service blockchain and maintains layer access-control. They coordinate peer-to-peer to evict
Node[<a href="#oxen-service-nodes">2</a>] network that underperforming and malicious peers whilst generating entropy for securing blocks using
distributes the blockchain and maintains layer checkpointing[<a href="#oxen-checkpointing">3</a>] and a commit-reveal scheme known as
access-control. They coordinate peer-to-peer to evict
underperforming and malicious peers whilst generating
entropy for securing blocks using
checkpointing[<a href="#oxen-checkpointing">3</a>] and
a commit-reveal scheme known as
Pulse[<a href="#oxen-pulse#">4</a>]. Pulse[<a href="#oxen-pulse#">4</a>].
</p> </p>
<p> <p>
With over 1k+ servers and growing, the Service Node With over 1k+ servers and growing, the Service Node network provides a sybil-resistant
network provides a sybil-resistant foundation to foundation to facilitate a privacy preserving onion routing network, Lokinet, and, a
facilitate a privacy preserving onion routing network, privacy preserving messenger, Session.
Lokinet, and, a privacy preserving messenger, Session.
</p> </p>
<ul class=milestones> <ul class=bullet-points>
<li>Rapidly learning & up-skilling as their first developer in the startup to form a development methodology and hiring practices</li> <li>Rapidly learned & up-skilled as their first developer in the startup to form a development methodology and hiring practices.</li>
<li>Implement a resilient server layer over new P2P gossip protocols: node de/registration & rewards, service metrics & voting</li> <li>Implemented a resilient server layer over new P2P gossip protocols: node de/registration & rewards, service metrics & voting.</li>
<li>Form immutable checkpoints to secure blocks using shared consensus to provide faster finalization of transfers on the network</li> <li>Formed immutable checkpoints to secure blocks using shared consensus to provide faster finalization of transfers on the network.</li>
<li>Create an on-chain DNS registry to map cryptographic keys to human readable aliases (e.g. Lokinet domains, Oxen wallets and Session aliases)</li> <li>Created an on-chain DNS registry to map cryptographic keys to human readable aliases (e.g. Lokinet domains, Oxen wallets and Session aliases).</li>
<li>Transition from Proof of Work to Proof of Stake live in production, deprecates miners for a commit-reveal scheme to generate entropy for minting blocks</li> <li>Transitioned from Proof of Work to Proof of Stake live in production, deprecated miners for a commit-reveal scheme to generate entropy for minting blocks.</li>
<li>Ownership of release process (build/package/distribute) end to end.</li> <li>Owned the release process (build/package/distribute) end to end.</li>
<li>Patching of 0-days and exploits & recovering from consensus failure on a live production network</li> <li>Patched 0-days and exploits & recovering from consensus failure on a live production network.</li>
<li>Improved the test framework for including re-write of Monero's framework and adding integration tests using IPC over named pipes</li> <li>Improved the test framework for including re-write of Monero's framework and adding integration tests using IPC over named pipes.</li>
</ul> </ul>
<small> <small>
<ul class=citations> <ul class=citations>
@@ -258,91 +275,198 @@
</ul> </ul>
</small> </small>
</div> </div>
<div> <div>
<div class=job-role style="border-color: #519A8B"> <h3>Older Work</h3>
<p>2017: C++ Intern Software Engineer, Wargaming Sydney <img class=favicon src="assets/wargaming-favicon.ico"> (Game Dev)</p> <p class=job-role style="border-color: #519A8B">2017: C++ Intern Tools Engineer, Wargaming Sydney</p>
</div>
<p> <p>
Game development company most popular for developing Game development company most popular for developing World of Tanks. I was in the tools
World of Tanks. I was in the tools team assisting with team assisting with the development of the editor for the asset pipeline.
the development of the editor for the asset pipeline.
</p> </p>
</div>
<div>
<p class=job-role style="border-color: #DBAE55">2014 - 2017: B. Computer Science, University of New South Wales<img class=favicon src="assets/unsw-icon-192x192.png"></p>
<small> <small>
<ul class=citations> <ul class=citations>
<li>UNSW <a href="https://unsw.edu.au">unsw.edu.au</a></li>
<li>Wargaming Sydney <a href="https://wargaming.com/">wargaming.com</a></li> <li>Wargaming Sydney <a href="https://wargaming.com/">wargaming.com</a></li>
</ul> </ul>
</small> </small>
</div> </div>
</section>
<div><hr></div>
<section aria-label="Projects">
<h2>Projects</h2>
<div> <div>
<div class=job-role style="border-color: #DBAE55"> <p class=job-role style="border-color: #C16358">2018 - CURR: DN Library <a href="https://git.doylet.dev/doylet/dn">git.doylet.dev/doylet/dn</a></p>
<p>2014 - 2017: B. Computer Science, University of New South Wales <img class=favicon src="assets/unsw-icon-192x192.png"></p> <ul class=job-tech>
<li>C style C++</li>
<li>Single File Library</li>
<li>Arenas</li>
<li>Pools</li>
<li>Hash-Tables</li>
<li>Arrays</li>
<li>Strings</li>
<li>OS Primitives (Threads/Mutexes/Barriers...)</li>
<li>Networking (cURL/Emscripten)</li>
<li>Profiler</li>
<li>Cross-Platform (Win32/POSIX/Emscripten)</li>
</ul>
<p>
My personal foundational libraries for tools in C-style C++ that replaces the C/C++
standard libraries for my projects. It provides a set of primitives designed around
explicit memory control with allocator-aware APIs, zero-allocation patterns, and
arena-based memory management where appropriate.
</p>
<p>
The library is designed for trivial integration: a single dn.h/dn.cpp pair (or an
auto-generated single-header amalgamation) with no external dependencies required. It
targets Win32, POSIX, and Emscripten/WASM, with compile-time feature toggles to include
only what's needed.
</p>
<p>
Core modules include arrays, hash tables, string manipulation with optional
AVX-512 acceleration, a frame profiler, thread-local arena contexts with scratch memory,
and a networking layer abstracting cURL and browser Fetch APIs. Debug tooling is built in:
ASAN memory poisoning, use-after-free detection for scratch arenas, memory scrubbing on
deallocation, and leak tracking.
</p>
<p>
It has continually evolved since the start of my programming career and has been a testing
ground for understanding the implication of different API designs, how common
functionality is built and exploring different primitives (like the experimental AVX-512
string APIs).
</p>
</div> </div>
<div>
<p class=job-role style="border-color: #DBAE55">2025 - CURR: Solid++</p>
<ul class=job-tech>
<li>Python</li>
<li>C++ (GUI)</li>
<li>Chainflip</li>
<li>Hyperliquid</li>
<li>Market Making</li>
<li>ImGui</li>
<li>SQLite</li>
<li>WebSocket</li>
<li>Emscripten/WASM</li>
</ul>
<table>
<tr><td><img src="assets/projects_solidpp.jpg"></td></tr>
</table>
<p>
A complete rewrite of Liquid++ bot in Python with a native C++ ImGui dashboard which also
targets the web using Emscripten for remote monitoring. This was an experiment into the
viability of using Python for faster iteration on protocol updates on Chainflip as well as
testing newer strategies more easily. It was also an experiment in using ImGui for web
UIs.
</p>
<p>
The rewrite was a trade-off sacrificing latency for faster iteration. Chainflip has a
6-second block time which makes sub-second latency less critical than
the ability to iterate quickly. The bot runs two strategies: a delta-neutral hedge
across Chainflip and Hyperliquid (perps and spot), and a basic Bybit spot strategy. Bot
pricing is configurable using averages over a lookback window with tools to identify
competing orders and to offer to beat or match them in real-time.
</p>
<p>
The C++ GUI compiles to both a native desktop app and a WASM web build allowing for quick
local iteration whilst allowing remote monitoring. It communicates with the Python backend
over WebSocket using a custom binary protocol. Features include a self-tuning swap window,
trading performance tracking and sends notifications via Session messenger webhooks.
</p>
</div>
<div>
<p class=job-role style="border-color: #DBAE55">2024 - 2025: Liquid++</p>
<ul class=job-tech>
<li>C style C++</li>
<li>Chainflip</li>
<li>Market Making</li>
<li>ImGui</li>
<li>Sokol</li>
<li>SQLite</li>
<li>Backend</li>
</ul>
<table>
<tr><td><img src="assets/projects_liquidpp.png"></td></tr>
</table>
<p>
A market-making bot written in C++ for Chainflip, a decentralised cross-chain exchange.
The bot provides liquidity by placing limit orders on Chainflip's concentrated liquidity
AMM, then hedges directional exposure by taking opposing perpetual positions on
Hyperliquid. It pulls price data from Bybit as a secondary oracle to inform pricing.
</p>
<p>
The system connects to three exchanges simultaneously via WebSocket, each with dedicated
rate limiters and staleness detection to prevent trading on stale data. Orders are priced
using the external mid-price plus a configurable profit margin, and a kill-order is
scheduled for the next block to cancel unfilled orders before they can be picked up at an
unfavourable price.
</p>
<p>
It has hot-reload DLL support, a platform layer (Sokol) separates business logic into a
reloadable DLL. Dear ImGui is used for monitoring positions, order fills, and exchange
connectivity. A separate web dashboard server (CivetWeb) publishes binary heartbeats over
WebSocket for remote monitoring in a browser.
</p>
</div>
<div>
<p class=job-role style="border-color: #519A8B">2023: Terry Cherry</p>
<ul class=job-tech>
<li>C style C++</li>
<li>Raylib</li>
<li>Emscripten</li>
<li>2D Tower Defence-Esque</li>
</ul>
<table>
<tr><td><img src="assets/projects_terry_cherry_1.jpg"></td>
<td><img src="assets/projects_terry_cherry_0.jpg"></td></tr>
</table>
<p>
A 2-player local co-op top-down tower defence game developed over 4 weekends in a game
jam. Players defend "Terry's Heart" from waves of love-themed enemies (catfish, smoochie
teleporters, and clinger dashers) that march along waypoint paths toward the base.
</p>
<p>
Players earn coins by defeating enemies and purchase upgrades or buildings from the
storefronts. A pub that slows enemies, a church that converts them to allies and an
airport that flies them to the back of the queue. Monkey totems spawn periodically which
can disable enemy portals when delivered to them shutting them down permanently to win.
</p>
<p>
The engine features a tree-based entity system with generation-indexed
handles[<a href="projects-terry-cherry-handles">1</a>] to prevent use-after-free bugs,
fixed-timestep physics with swept AABB collision and a waypoint path-finding system. Built
on Raylib with a custom C++ meta-build system, hot-reload DLL support, and an Emscripten
web build targeting WebGL.
</p>
<small> <small>
<ul class=citations> <ul class=citations>
<li>UNSW <a href="https://unsw.edu.au">unsw.edu.au</a></li> <li>Play Terry Cherry <a href="https://game.doylet.dev/terry_cherry/">game.doylet.dev/terry_cherry/</a></li>
<li>Source Code <a href="https://git.doylet.dev/doylet/feely_pona">git.doylet.dev/doylet/feely_pona</a></li>
<li>[1] Handles are the better pointers<a href="https://floooh.github.io/2018/06/17/handles-vs-pointers.html">floooh.github.io/2018/06/17/handles-vs-pointers.html</a></li>
</ul> </ul>
</small> </small>
</div> </div>
</section>
<section aria-label="Projects Summary"> <div>
<h2>Projects Summary</h2> <p class=job-role style="border-color: #BEBF5E">2020: intc Software u128/256 bit port to C <a href="https://git.doylet.dev/doylet/intc">git.doylet.dev/doylet/intc</a></p>
<div class=divider style="margin-bottom: 0.5em"></div> <ul class=job-tech>
<div class=job-role style="border-color: #C16358"> <li>C99/C++</li>
<p>2018 - CURR: <a href="#dqn-project">Dqn</a> C/C++ personal standard library <a href="https://git.doylet.dev/doylet/dqn">git.doylet.dev/doylet/dqn</a></p> <li>Open Source</li>
</div> <li>Single File Library Port</li>
<div class=job-role style="border-color: #BEBF5E">
<p>2021: <a href="#intc-project">intc</a> Software u128/256 bit port to C <a href="https://git.doylet.dev/doylet/intc">git.doylet.dev/doylet/intc</a></p>
</div>
<div class=job-role style="border-color: #8DBCA2">
<p>2020: <a href="#raylibsimd-project">RaylibSIMD</a> SIMD Software rendering in C <a href="https://git.doylet.dev/doylet/RaylibSIMD">git.doylet.dev/doylet/RaylibSIMD</a></p>
</div>
<div class=job-role style="border-color: #519A8B">
<p>2017: <a href="#dtrenderer-project">DTRenderer</a> 3D Software rendering in C++ <a href="https://git.doylet.dev/doylet/DTRenderer">git.doylet.dev/doylet/DTRenderer</a></p>
</div>
<div class=job-role style="border-color: #DBAE55">
<p>2017: <a href="#mathmasher-project">Math Masher</a> Math game for mobile <a href="https://doylet.dev/luneaustralia">doylet.dev/luneaustralia</a></p>
</div>
<div class=job-role style="border-color: #C16358">
<p>2017: <a href="#dchip8-project">DCHIP8</a> Chip8 interpreter <a href="https://git.doylet.dev/doylet/dchip-8">git.doylet.dev/doylet/dchip-8</a></p>
</div>
<div class=job-role style="border-color: #C16358">
<p>2016: <a href="#dengine-project">Dengine</a> 2D engine for asteroids <a href="https://git.doylet.dev/doylet/dengine">git.doylet.dev/doylet/dengine</a></p>
</div>
</section>
<section class=pagebreak aria-label="Projects">
<h2>Projects</h2>
<div class=divider style="margin-bottom: 0.5em"></div>
<div id=dqn-project>
<div class=job-role style="border-color: #C16358">
<p>2018: Dqn C/C++ personal standard library <a href="https://git.doylet.dev/doylet/dqn">git.doylet.dev/doylet/dqn</a></p>
</div>
<p>
My personal standard library used in personal projects
that focuses on simplicity, transparent data
structures void of crazy C++ features with minimal
dependencies on the standard libraries. The library is
orientated around avoiding unnecessary allocations e.g.
minimal calls to malloc and non-pessimized
implementations.
</p>
<ul class=milestones>
<li>Custom memory routines: arena allocator, virtual memory containers, TLS scratch allocators</li>
<li>Allocation-less string slices and string manipulation routines</li>
<li>Linear probed and chained hash tables in 400~ LOC</li>
<li>Fixed sized arrays and strings containers</li>
</ul> </ul>
</div>
<div id=intc-project>
<div class=job-role style="border-color: #BEBF5E">
<p>2020: intc Software u128/256 bit port to C <a href="https://git.doylet.dev/doylet/intc">git.doylet.dev/doylet/intc</a></p>
</div>
<sub><i>C99/C++, Open Source, Single File Library Port</i></sub>
<p> <p>
intc is a port of calccrypto's uint128/256 library into intc is a port of calccrypto's uint128/256 library into a single header file library to
a single header file library to allow u128/256 allow u128/256 calculations. This port is primarily C first and provides C++ helpers like
calculations. This port is primarily C first and operator overloads that are opt in.
provides C++ helpers like operator overloads that are
opt in.
</p> </p>
<small> <small>
<ul class=citations> <ul class=citations>
@@ -350,17 +474,18 @@
</ul> </ul>
</small> </small>
</div> </div>
<div id=raylibsimd-project>
<div class=job-role style="border-color: #8DBCA2"> <div>
<p>2020: RaylibSIMD SIMD Software rendering in C <a href="https://git.doylet.dev/doylet/RaylibSIMD">git.doylet.dev/doylet/RaylibSIMD</a></p> <p class=job-role style="border-color: #8DBCA2">2020: RaylibSIMD SIMD Software rendering in C <a href="https://git.doylet.dev/doylet/RaylibSIMD">git.doylet.dev/doylet/RaylibSIMD</a></p>
</div> <ul class=job-tech>
<sub><i>C99, SSE2, Graphics Programming</i></sub> <li>C99</li>
<li>SSE2</li>
<li>Graphics Programming</li>
</ul>
<p> <p>
Raylib is a game-engine by Raysan5 whose main focus is Raylib is a game-engine by Raysan5 whose main focus is to make game engine programming
to make game engine programming simple and enjoyable. simple and enjoyable. In this project, I rewrote the software-rendering routine to use
In this project, I rewrote the software-rendering SSE2/3 instructions to attain the expected 4x speed-up by taking advantage of
routine to use SSE2/3 instructions to attain the
expected 4x speed-up by taking advantage of
data-parallelism offered by SIMD. data-parallelism offered by SIMD.
</p> </p>
<small> <small>
@@ -369,19 +494,18 @@
</ul> </ul>
</small> </small>
</div> </div>
<div id=dtrenderer-project>
<div class=job-role style="border-color: #519A8B"> <div>
<p>2017: DTRenderer 3D Software rendering in C++ <a href="https://git.doylet.dev/doylet/DTRenderer">git.doylet.dev/doylet/DTRenderer</a></p> <p class=job-role style="border-color: #519A8B">2017: DTRenderer 3D Software rendering in C++ <a href="https://git.doylet.dev/doylet/DTRenderer">git.doylet.dev/doylet/DTRenderer</a></p>
</div> <table>
<a href="assets/projects_dtrenderer.gif"><img src="assets/projects_dtrenderer.gif"></a> <tr><td><img src="assets/projects_dtrenderer.gif"></td></tr>
</table>
<p> <p>
DTRenderer is an attempt to build a simple software DTRenderer is an attempt to build a simple software renderer from the ground up. The main
renderer from the ground up. The main goal is to build goal is to build an intuitive understanding of graphics mathematics, rendering pipeline
an intuitive understanding of graphics mathematics, and core concepts. It runs as a Win32 program with minimal dependencies.
rendering pipeline and core concepts. It runs as a Win32
program with minimal dependencies.
</p> </p>
<ul class=milestones> <ul class=bullet-points>
<li>2D Software Rendering</li> <li>2D Software Rendering</li>
<li>Alpha Blending</li> <li>Alpha Blending</li>
<li>Bilinear Filtering</li> <li>Bilinear Filtering</li>
@@ -391,35 +515,31 @@
<li>Translation, Rotation, Scale</li> <li>Translation, Rotation, Scale</li>
<li>3D Software Rendering</li> <li>3D Software Rendering</li>
<li>Full Bright, Flat, Gouraud Shading</li> <li>Full Bright, Flat, Gouraud Shading</li>
<li>Orthogaphic, Perspective Projections</li> <li>Orthographic, Perspective Projections</li>
<li>Translation Rotation Scale</li>
<li>Custom Wavefront Obj Loader (minimal subset)</li> <li>Custom Wavefront Obj Loader (minimal subset)</li>
<li>Hot Reloadable DLL for Renderer Code (taken from Handmade Hero)</li> <li>Hot Reloadable DLL for Renderer Code (taken from Handmade Hero)</li>
</ul> </ul>
</div> </div>
<div id=mathmasher-project>
<div class=job-role style="border-color: #DBAE55">
<p>2017: Math Masher Math game for mobile <a href="luneaustralia/">doylet.dev/luneaustralia</a></p>
</div>
<div class=row>
<a href="assets/projects_math_masher_screen_1.png"><img src="assets/projects_math_masher_screen_1.jpg"></a>
<a href="assets/projects_math_masher_screen_2.png"><img src="assets/projects_math_masher_screen_2.jpg"></a>
<a href="assets/projects_math_masher_screen_3.png"><img src="assets/projects_math_masher_screen_3.jpg"></a>
</div>
<p>
Math Masher is a cross-platform mobile app that aims to
teach basic arithmetic skills including addition,
subtraction and multiplication by gamifying the learning
experience. The app was developed in a team using the
Cocos2DX framework in C++.
My role in the project is as the lead developer and <div>
assisting role with asset design. <p class=job-role style="border-color: #DBAE55">2017: Math Masher Math game for mobile <a href="luneaustralia/">doylet.dev/luneaustralia</a></p>
<table>
<tr>
<td><img src="assets/projects_math_masher_screen_1.jpg"></td>
<td><img src="assets/projects_math_masher_screen_2.jpg"></td>
<td><img src="assets/projects_math_masher_screen_3.jpg"></td>
</tr>
</table>
<p>
Math Masher is a cross-platform mobile app that aims to teach basic arithmetic skills
including addition, subtraction and multiplication by gamifying the learning experience.
The app was developed in a team using the Cocos2DX framework in C++. My role in the
project is as the lead developer and assisting role with asset design.
</p> </p>
<ul class=milestones> <ul class=bullet-points>
<li>Project management (Trello, minutes meeting, code review etc.)</li> <li>Project management (Trello, minutes meeting, code review etc.)</li>
<li>Game engine architecture (Gameplay, UI, shopping mechanics, debug)</li> <li>Game engine architecture (Gameplay, UI, shopping mechanics, debug)</li>
<li>Basic sound editing (Compressor, EQuing, normalisation)</li> <li>Basic sound editing (Compressor, EQing, normalisation)</li>
<li>Asset designs (Creating graphical assets with Photoshop)</li> <li>Asset designs (Creating graphical assets with Photoshop)</li>
</ul> </ul>
<small> <small>
@@ -428,20 +548,18 @@
</ul> </ul>
</small> </small>
</div> </div>
<div id=dchip8-project>
<div class=job-role style="border-color: #C16358"> <div>
<p>2017: DCHIP8 Chip8 interpreter <a href="https://git.doylet.dev/doylet/dchip-8">git.doylet.dev/doylet/dchip-8</a></p> <p class=job-role style="border-color: #C16358">2017: DCHIP8 Chip8 interpreter <a href="https://git.doylet.dev/doylet/dchip-8">git.doylet.dev/doylet/dchip-8</a></p>
</div> <table>
<div class="row"> <tr>
<a href="assets/projects_dchip8_screen_1.png"><img src="assets/projects_dchip8_screen_1.png"></a> <td><img src="assets/projects_dchip8_screen_1.png"></td>
<a href="assets/projects_dchip8_screen_2.png"><img src="assets/projects_dchip8_screen_2.png"></a> <td><img src="assets/projects_dchip8_screen_2.png"></td>
</div> </tr>
<p> </table>
DCHIP8 aims to emulate the CHIP8 architecture to better <p> DCHIP8 aims to emulate the CHIP8 architecture to better understand at a lower level
understand at a lower level operations between memory, operations between memory, cpu, input and output.</p>
cpu, input and output. <ul class=bullet-points>
</p>
<ul class=milestones>
<li>Fetch, Decode, Execute Opcodes</li> <li>Fetch, Decode, Execute Opcodes</li>
<li>Modelling memory, registers and basic CPU architecture</li> <li>Modelling memory, registers and basic CPU architecture</li>
<li>Software Rendering and interaction with Win32</li> <li>Software Rendering and interaction with Win32</li>
@@ -453,26 +571,24 @@
</ul> </ul>
</small> </small>
</div> </div>
<div id=dengine-project>
<div class=job-role style="border-color: #C16358"> <div>
<p>2016: Dengine 2D engine for asteroids <a href="https://git.doylet.dev/doylet/dengine">git.doylet.dev/doylet/dengine</a></p> <p class=job-role style="border-color: #C16358">2016: Dengine 2D engine for asteroids <a href="https://git.doylet.dev/doylet/dengine">git.doylet.dev/doylet/dengine</a></p>
</div> <table>
<div class="row"> <tr>
<a href="assets/projects_dengine_screen_1.png"><img src="assets/projects_dengine_screen_1.png"></a> <td><img src="assets/projects_dengine_screen_1.png"></td>
<a href="assets/projects_dengine_demo.gif"><img src="assets/projects_dengine_demo.gif"></a> <td><img src="assets/projects_dengine_demo.gif"></td>
</div> </tr>
</table>
<p> <p>
Dengine is a solo project, 2D game engine developed with Dengine is a solo project, 2D game engine developed with OpenGL and low-level libraries in
OpenGL and low-level libraries in C. The main goal of C. The main goal of Dengine is to facilitate learning from many aspects of Computer
Dengine is to facilitate learning from many aspects of Science. Alongside Dengine, Asteroids is being built which guides the development of
Computer Science. Alongside Dengine, Asteroids is being features for the game. Dengine is inspired by Handmade Hero, with a focus on developing as
built which guides the development of features for the many features with minimal libraries, such that it is not too time-consuming and
game. Dengine is inspired by Handmade Hero, with a focus
on developing as many features with minimal libraries,
such that it is not too time-consuming and
counter-productive to do so. counter-productive to do so.
</p> </p>
<ul class=milestones> <ul class=bullet-points>
<li>Asset Management (load data into intermediate representations)</li> <li>Asset Management (load data into intermediate representations)</li>
<li>Audio API from OpenAL</li> <li>Audio API from OpenAL</li>
<li>Basic 2D Game Mathematics/Physics (Vector, Trig, Explicit Euler)</li> <li>Basic 2D Game Mathematics/Physics (Vector, Trig, Explicit Euler)</li>
@@ -493,7 +609,9 @@
</ul> </ul>
</small> </small>
</div> </div>
</section> </section>
</main> </main>
</body> </body>
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