High-Performance Game Engineering

Developing real-time multiplayer games requires a deep understanding of network synchronization and CPU cycle optimization. In Unity, the physics engine can quickly become a bottleneck if not managed correctly. Our team focuses on Deterministic Physics and Server-Side Validation.

1. FixedUpdate vs. Update

One of the most common mistakes is placing physics logic in the Update() method, which is frame-rate dependent. We strictly adhere to FixedUpdate() for all Rigidbody calculations to ensure consistent behavior regardless of the user's hardware. To keep the UI smooth, we use interpolation to fill the gaps between physics steps.

2. Layer-Based Collision Matrix

To reduce CPU load, we never use the default collision matrix. We define specific layers for players, projectiles, and environmental triggers, disabling collisions between objects that don't need to interact. This reduces the number of Raycasts and collision checks per second, which is vital for mobile game performance.

3. Network Prediction and Rollback

To combat latency, we implement Client-Side Prediction. The player's character moves instantly on their screen, while the server verifies the move in the background. If the server detects a discrepancy, we perform a "Rollback" to the last known valid state. This logic is implemented in C# using high-speed bit-packing for network packets, ensuring that the 30+ developers in our gaming division deliver a lag-free experience for players globally.