A Minecraft strategy mod, a trigonometry city builder and follow-me drone software.

CivMod turns a single-player Minecraft world into a strategy game. You found a nation and build cities while AI nations expand, research, trade and go to war around you. A city planner imports Litematica, Sponge schematic and NBT structure files, and visible builder NPCs place them block by block from the city's own stores.

All the game rules live in a plain-Java core with no Minecraft imports, about 10,400 lines with 8,000 lines of tests, so the simulation can be tested in seconds without starting the game. NeoForge game tests and a client self-test cover the parts that touch Minecraft, including loading saves from every earlier milestone.

Running the design numbers on real world seeds produced zero AI wars, because AI capitals spawned 36 to 147 chunks apart and never met. Raising the neighbour range from 32 to 96 chunks gave five wars and one elimination over 240 game days on one seed. Two other seeds still gave none, and that is logged as an open problem.

A browser game for learning trigonometry over 21 days. Each day is a level of problems, and solving them earns buildings and residents for a city modelled on Lafayette, Louisiana, which you lay out yourself.

The first version filled the city in automatically. Phase 1 replaced that with a serializable grid model: buildings have footprints that collide, can be rotated, moved and demolished, and old saves migrate to the new format. Phase 2 made roads matter. A building only counts as active if it touches a road, which needed connectivity logic and a second save migration. Game state lives in a zustand store saved to the browser, so there is no server.

The city logic has 51 tests. The plan runs to five phases, ending in a SimCity-style economy with services and disasters; work stopped halfway through phase 2, with seven of its thirteen tasks done.

Software for a drone that follows one person at a set distance. The subject enrolls by standing in front of the camera at takeoff, and there is deliberately no way to point it at someone from a photo. After that it tracks them with YOLOv8n and ByteTrack, and when they disappear behind something it finds them again by matching face (ArcFace) and body appearance (OSNet).

The safety rules are a tested state machine: hover after one second without the subject, land after eight, never exceed 1.5 m/s, and stay inside a 30 m geofence. A body-only match can never take over a lock that is already held, and the lock uses hysteresis so it does not flicker between people.

The full detect, re-identify and control loop runs at about 8 frames a second at 640 by 480 on a laptop CPU. Five scripted scenarios cover walking straight, hiding behind a wall, a stranger crossing, turning away and stop-start. The PX4 simulator adapter is written but has not been run yet.