MOHAA Netcode Visualization

A two-part visualization: remote entity snapshot interpolation/extrapolation, plus local-player client-side prediction and server reconciliation.

Controls

Hover the dotted labels for plain-English explanations.

Simulation variables

Manual local input Arrow keys / WASD.

Remote entity speed 150 units/s

Direction change 3.0s

Network variables

Ping / RTT 200 ms

Packet loss 0%

Jitter 0 ms

Netcode variables

sv_fps 20 FPS

snaps 20 snapshots/s

cl_maxpackets 30 packets/s

cl_packetdup 1

cg_smoothClients Smooth remote entities.

cg_smoothClientsTime 100 ms

cl_timeNudge 0 ms

Live world

Top lane: remote enemy snapshot smoothing. Bottom lane: local player prediction and reconciliation.

Actual Server Client Packets

Remote entity lane

Local player lane

Legend

▲ actual ▲ server ▲ client

Packets

● client → server ● server → client ● lost

Input

Arrow keys or WASD move the local predicted player.

Stats

What this demo is, and is not

Remote entities: the red client marker is rendered from received server snapshots. When two snapshots bracket render time, it interpolates; when it runs out of future data, it extrapolates for a capped time.

Local player: the red marker moves instantly from input. The server simulates delayed authoritative commands, then the client reconciles and replays unacknowledged commands.

Simplification: real MOHAA/OpenMOHAA has full player physics, collision, delta-compressed snapshots, reliable commands, rate limits, and richer entity state. This is intentionally a visual model, not a protocol emulator.