The **Weapon Collision Manager (AC\_CollisionManager)** is a component that dynamically handles collision tracing, hit detection, and damage processing for weapons. Tracing is enabled or disabled at runtime through the [**Weapon Trace Notify**](/animation-notifies/damaging-and-combos/weapon-trace-notify.md), ensuring collision checks occur only during specific animation frames.
It is added to the **parent Weapon Item** Actor class by default **(B\_Item\_Weapon).**
### **How It Works**
1. **Initialization**:
* On `BeginPlay`, the component:
* Reads the **Trace Sockets** for the start and end positions of the weapon trace.
* Configures **Trace Radius** and **Trace Types**.
* Sets up the tracing logic but keeps it **paused by default**.
2. **Animation Notify State (ANS\_WeaponTrace)**:
* **ANS\_WeaponTrace** is used within weapon animations (e.g., attack swings) to toggle tracing:
* **Enable**: Starts weapon tracing by unpausing the Event Tick.
* **Disable**: Pauses weapon tracing to stop unnecessary checks.
3. **Collision Tracing (On Event Tick)**:
* When tracing is enabled:
* Performs a **Multi-Sphere Trace** using the socket positions and substepping to combat framerate dependency.
* If a valid target is detected, the **OnActorTraced** event fires, passing hit data for processing.
4. **Damage and Effects**:
* The `OnActorTraced` logic handles:
* **Damage Calculation**: Uses weapon stats and modifiers (e.g., scaling, random variance).
* **Damage Application**: Applies point damage to the hit target.
* **Visual Feedback**: Spawns effects like blood splatters or sparks at the impact point.
* **Audio Feedback**: Plays sound effects for weapon hits.
5. **Debugging**:
* The **Trace Debug Mode** visualizes traces in real-time, helping developers fine-tune trace positions and radii.
### Example Usage
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