UE5 Weapon System Line Trace Shooting FirePoint and Fire Montage

What You Will Build

• A dedicated fire input action bound to the left mouse button
• A FirePoint component attached to the rifle muzzle
• A firing animation montage for controlled playback
• A clean shooting flow inside the character blueprint
• A camera based line trace that shoots where the player aims
• Muzzle sound played from the FirePoint location
• A temporary crosshair widget for testing

This is the minimum solid foundation of a real trace-based firing system.

Why This Step Matters in a Weapon System

A lot of beginner weapon systems fall apart right here. The player can pick up the gun, maybe even aim, but the actual firing logic is garbage. The shot comes from the wrong place, the animation does not sync, the sound plays from nowhere useful, and the trace does not match where the player is looking.

This tutorial fixes that by building a proper firing pipeline in the right order. First input. Then muzzle reference. Then animation. Then trace. Then testing UI. That order matters.

Step 1: Create the Fire Input Action

Open the Content Drawer and go to your Input folder. Inside the Actions subfolder, create a new Input Action and name it:

IA_Fire

Open the asset and set the Value Type to:

Digital

That is correct because firing here is a simple pressed or not pressed input.

Then go back to your input mapping context, usually:

IMC_Default

Add a new mapping for IA_Fire and bind it to:

Left Mouse Button

At this point, Unreal knows what input should trigger the shooting system. Simple, clean, and reusable.

Step 2: Create a FirePoint on the Weapon

Before wiring the shooting logic, you need a physical reference point on the weapon. This is the location that represents the muzzle area and acts as the origin for sound, projectile spawning later, and other weapon effects.

Open:

BP_ThirdPersonCharacter

To make setup easier, temporarily turn the Rifle component visibility on if it is hidden, and enable Pause Anims on the character so the weapon stops moving while you place the helper component.

Then select the Rifle component and add a small helper component. In this tutorial, a Sphere is used, though an Arrow component would also work.

Scale it down to something tiny, such as:

0.02

Then move it slightly in front of the rifle muzzle. Do not place it buried inside the weapon mesh. Leave a little space in front so the trace and later effects do not start inside geometry.

Once positioned correctly, disable the helper component visibility so it stays functional but invisible in-game. Then turn Pause Anims off again.

This FirePoint is a small step, but it matters. Without it, your muzzle sound and future effects have no reliable anchor.

Step 3: Create the Fire Montage

Next you need an animation montage for firing. Open your retargeted animation folder and find the fire animation asset, such as:

Fire Rifle Hip

Right-click it and choose:

Create Anim Montage

Unreal will generate a montage based on that animation. This gives you controlled playback from Blueprint during the firing event.

That is the correct choice. Raw animation clips are fine for simple playback, but montages are built for triggered actions like firing, reloading, and other weapon events.

Step 4: Add the Fire Input Event in the Character Blueprint

Go back to BP_ThirdPersonCharacter and open the Event Graph.

Add the input action event for:

IA_Fire

Use the Started output pin so the system reacts as soon as the player clicks.

Then bring in the existing:

Armed

Boolean and connect it into a Branch.

This is your first gate. If the character is not armed, the system should stop immediately. No weapon, no shot.

Step 5: Access the Animation Blueprint and Check IsAiming

From the character Mesh component, get the current Anim Instance and cast it to your animation blueprint, in this case:

ABP_Unarmed

From the cast result, get the Boolean:

IsAiming

Then add another Branch.

Now the firing logic has two conditions:

• The character must be armed
• The character must be aiming

That gives you a controlled firing state instead of letting the system shoot anytime the left mouse button is clicked.

Step 6: Play the Fire Anim Montage

From the True output of the aiming check, add:

Play Anim Montage

Keep the target as Self and select the Fire Rifle Hip montage you created earlier.

This plays the firing animation every time the shot is triggered. That immediately makes the system feel more complete and gives visual feedback that the weapon actually fired.

Step 7: Play Sound from the FirePoint

Bring the FirePoint component into the graph and get its:

World Location

Then add:

Play Sound at Location

Use the FirePoint world location as the sound position and choose a suitable weapon fire sound, such as the one from the First Person template.

This matters more than people think. Sound coming from the muzzle area feels believable. Sound playing from some random actor origin or character feet feels sloppy.

Step 8: Create a GunRange Variable

Before building the trace, create a new Float variable named:

GunRange

Compile the blueprint and set the default value to:

20000

This defines how far the weapon can shoot.

Using a variable here is the right move because different weapons can later use different ranges without rebuilding the whole trace logic.

Step 9: Build a Camera Based Line Trace

This is the real core of the shooting system.

Bring in the Aiming Camera component and get:

• World Location
• Forward Vector

Add a:

Line Trace by Channel

Connect the firing flow into this node after the sound playback.

For the Start input, use the Aiming Camera world location.

For the End input, calculate:

Camera World Location + (Forward Vector * GunRange)

This is the correct logic for a camera-based trace. It means the shot goes exactly where the player is looking, not wherever the rifle mesh happens to point.

That is a huge difference. It keeps aiming reliable and makes testing much easier.

Why Use the Camera for the Trace Instead of the Muzzle

This is one of the most important design choices in the whole tutorial.

If you fire the trace directly from the muzzle forward vector, the shot may not land where the crosshair or aiming camera is pointing, especially in third-person setups. That creates frustrating mismatch between what the player sees and what the game actually hits.

By tracing from the camera, you guarantee the shot follows the player's aim direction. The FirePoint is still useful for sound and future visual effects, but the trace direction should be driven by the camera for reliable shooter gameplay.

Step 10: Enable Debug Drawing and Ignore Self

For testing, set the trace debug mode to:

For Duration

and use a draw time such as:

5 seconds

Also make sure:

Ignore Self = true

Debug traces are not optional when building this kind of system. If you cannot see what your trace is doing, you are wasting time guessing instead of verifying.

Step 11: Create a Temporary Crosshair Widget

Before testing, add a simple HUD crosshair.

In your UI folder, create a new Widget Blueprint named:

WBP_HUD

Open it and add:

• A Canvas Panel
• A Text widget in the center

Set the anchor to the middle of the screen. Position X and Y can stay at 0. Set alignment X and Y to:

0.5

Enable Size to Content and use a simple plus sign as the text content:

+

Set the font size to something small and readable, such as:

18

It is ugly, yes. But for testing, it works. That is enough for now.

Step 12: Add the Crosshair to the Screen on Begin Play

Back in BP_ThirdPersonCharacter, use the Event Begin Play node.

From it, create the widget:

WBP_HUD

Then call:

Add to Viewport

This places the temporary crosshair on screen as soon as gameplay starts.

How the Full Firing Flow Works

Once everything is wired correctly, the system behaves like this:

1. The player presses the left mouse button
2. The input action event for IA_Fire triggers
3. The character checks whether it is armed
4. The system gets the animation blueprint and checks IsAiming
5. If both checks pass, the fire montage plays
6. The muzzle sound plays at the FirePoint location
7. A line trace is fired from the aiming camera along its forward vector
8. The debug line appears in the world for testing

That is a full working firing pipeline.

Common Mistakes to Avoid

• Trying to fire without checking the Armed state
• Skipping the IsAiming check and letting the weapon fire in any state
• Starting the trace from a bad position inside the mesh
• Using the weapon mesh forward direction instead of the camera for aiming logic
• Forgetting to ignore self in the line trace
• Not using debug drawing and then guessing why the trace feels wrong
• Playing sound from the wrong location
• Using a montage incorrectly or not at all for weapon firing animation

What Comes Next After This Shooting Setup

This tutorial gives you the base firing pipeline, but it is not the end of the weapon system. The next useful additions are things like:

• Laser pointer aiming
• Reload and magazine logic
• Muzzle flash effects
• Hit impact effects
• Damage application
• Health and destruction systems

That is where the weapon starts moving from a tested prototype into a complete combat framework.

Conclusion

In this Unreal Engine 5 weapon system tutorial, you built a complete line trace shooting setup by creating a fire input action, adding a FirePoint to the rifle, generating a fire montage, checking armed and aiming state, playing muzzle sound, tracing from the aiming camera, and adding a temporary crosshair for testing.

This is the exact kind of system foundation you want before adding hit effects, reloads, lasers, and damage logic.

Watch the full tutorial on YouTube: UE5 Weapon System Line Trace Shooting FirePoint and Fire Montage

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Frequently Asked Questions

How do I create a line trace shooting system in Unreal Engine 5?

Create a fire input action, check the player state, play the firing montage, then use a Line Trace by Channel driven by the camera location and forward vector to calculate the shot.

What is a FirePoint in a UE5 weapon system?

A FirePoint is a helper component attached near the weapon muzzle. It gives you a stable reference location for sound, muzzle flashes, projectile spawning, and other weapon effects.

Why use the camera for the line trace instead of the muzzle?

Because the camera represents where the player is aiming. A camera-based trace keeps shots accurate to the crosshair, especially in third-person systems.

Why create a fire montage instead of playing the animation directly?

An anim montage is better for triggered gameplay actions like firing because it gives cleaner control inside Blueprint logic.

Why is my shot not hitting where the crosshair points?

Common causes include tracing from the wrong start position, using the weapon forward vector instead of the aiming camera, or failing to calculate the end point with the camera forward vector and gun range.

Why add a temporary crosshair if it will be replaced later?

Because testing is easier when you have a clear center point on screen. A simple placeholder crosshair helps verify aiming and trace direction before building the final UI.