Technical Implementation
At the heart of Headball Arena is a robust Host-Client architecture built on top of Unity Netcode for GameObjects (NGO). Unlike traditional script-based sports games, every interaction in the arena is purely physical, making state synchronization incredibly complex.
To bridge the gap between local area networks and global play, I integrated Unity Lobbies and Relay to bypass NAT punchthrough issues. Furthermore, to provide challenging solo gameplay, I utilized Unity ML-Agents to train highly competitive AI bots capable of mastering these complex physics-based mechanics.
Advanced Networking Features
Client Prediction & Reconciliation
To eliminate perceived input lag, the client simulates movements locally in real-time. The system maintains a circular buffer of state snapshots; when an authoritative server update arrives, the client verifies its predicted state. Any divergence triggers a millisecond-accurate reconciliation, re-simulating missed frames to snap the character back to its true position without jitter.
Fairness-Driven Artificial Delay
In high-speed 2D physics environments, even minor latency imbalances can ruin competitive integrity. I implemented a tunable artificial delay buffer that normalizes jitter between players, ensuring that the physics of the game feel consistent whether you are the host or a client.