This document is about: QUANTUM 3
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Architecture

Simulation Systems

Gameplay System

The main system responsible for controlling state of the game, player spawn, calculation of statistics and checking win conditions.

Player System

Player system processes player input and propagates actions to specific components - for example it sets input direction for character controller (Quantum KCC).

Health System

Health system controls player health, taking damage and short immortality after respawn.

Pickup System

Pickup system updates pickups in the world and is responsible for collecting when a player passes through a pickup.

Weapons System

Weapons system maintains player weapons, switching, reloading and shooting.

Lag Compensation Systems

Lag compensation systems provide a way to make physics queries (for example raycasts) against snapshot interpolated entities.
These systems dynamically create and destroy "proxy" entities within Quantum simulation. A proxy mimicks its reference entity at the moment of snapshot interpolation.
Player shooting is then evaluated against proxies instead of other player entities, which eliminates mispredictions and makes shooting accurate.

Views

Player View

Main player script which handles visuals and camera.

Weapon/Weapons View

Scripts that synchronize weapons, their visuals and react on simulation events.

Health View

Reacts on health changes - damage, spawns hit effects and controls immortality indicator.

Pickup View

Controls visual of the pickup based on its simulation state.

Others

Projectile Visual

Regular MonoBehaviour script which controls projectile flying through the environment with hit effect at the end.

UI

The user interface in the Simple FPS is handled in a straightforward manner, without relying on any specific UI framework. The main script responsible for UI management is the GameUI script. It enables the appropriate UI game objects that should be visible during gameplay. Additionally, the GameUI script maintains references to other UI elements and updates the player UI when a player is spawned.

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