Overview

The VELESA Projectile Launcher component should be attached to an actor to become a type of weapon. Functions in this component fully manage firing including different fire modes and provide a wide range of configurations for project-specific use-cases.

Projectile Launcher Settings

Weapon

• Projectile Initial Speed : The projectile's initial speed when spawned.
• Add Owner Speed : If true, the Projectile Launcher component's velocity will be added to the initial speed of the projectile.
• Fire Interval : The interval at which the weapon can fire.
• Fire Spread : This value is used to calculate a randomized angle for a new projectile. See CalculateFireSpread() for more details.
• Burst Count : The maximum amount of ammo that will be shot when calling BeginFire().
• Burst Cooldown : The delay before another burst fire can be triggered.
• Fire Mode : The weapon's fire mode that defines the firing behavior.

notes

Fire Interval = 1, this means that you are allowed to shoot 1 projectile every second.

Burst Count applies to the following fire modes only:

• Burst
• InterruptibleBurst

Optimization

• Limit Shots Per Frame : Set this variable to true in order to avoid unwanted collisions between multiple projectiles spawned at the same frame. Consider this example: If the fire rate is faster than the frame rate, it is possible that more than one projectile will be spawned at the same frame.
• Client Safe Spawn Distance : The maximum allowed distance between the Projectile Launcher component's location on the server and client. If the distance exceeds this value, the client's location will be discarded.
• Client Aim Correction Enabled : If true, a client will be allowed to send its aim origin and rotation to the server. The update will occur on tick of the component.
• Client Screen Space Aim Coords : The screen-space coordinates (0.0 - 1.0) to use when calculating the client's camera aim. This defines where the crosshair is.
• Client Aim Trace Distance : The distance to trace from ClientScreenSpaceAimCoords into the world.
• Auto Update Ignore List : If set to true, ActorsIgnoredByProjectiles will be updated every time BeginFire() is called.

Ammo

• Ammo Consumption Per Shot : The amount of ammo to consume per shot.
• Projectile Spawn Amount : The amount of projectiles to spawn per shot.
• Ammo Count : The amount of available ammo for shooting.
• Ammo Sequence : Defines a sequence of VELESA Projectile classes that will be cycled through (with wrapping) when firing a shot.

note

Ammo Sequence is not intended to work like a magazine for a gun but to implement special behavior.

If you need to customize how Projectile classes are selected when firing, override GetProjectileClass().

examples

Examples for Ammo Sequence:

• Fire normal projectiles only : 1x NormalProjectile
• Fire explosive projectiles only : 1x ExplosiveProjectile
• Every 5th shot spawns an explosive projectile : 4x NormalProjectile + 1x ExplosiveProjectile
• The first shot of a reloaded weapon deals double damage : 1x DoubleDmgProjectile + 29x NormalProjectile
• The last shot of a reloaded weapon deals double damage : 29x NormalProjectile + 1x DoubleDmgProjectile
• etc.

User Data

• Weapon Damage : Weapon damage value passed to spawned projectiles.
• Weapon Tags : GameplayTagContainer passed to spawned projectiles.

note

The properties Weapon Damage and Weapon Tags are passed as-is from Projectile Launcher to spawned Projectiles. It is up to the developer to define meaning and values as needed.

examples

Example for Weapon Damage:

• It could be used to calculate the actual damage dealt by this projectile without having to know its parent actor.

Example for Weapon Tags:

• Tags could describe upgrades that were applied by the weapon at the time of firing.
• Apply a GameplayEffect when a target is hit by this projectile.

State

• Safety Lock Enabled : If the safety lock is enabled it will prevent firing.
• Infinite Ammo Enabled : If set to true, no ammo will be consumed when firing. It also allows to fire without having ammo.

Debug

• Debug : Debug flag passed to spawned projectiles. Set to true to enable projectile debug visualization. This will show the projectile's trajectory and events like ricochets, penetrations, and terminal hits.
• Debug Duration : Debug duration value passed to spawned projectiles. The duration for displaying the projectile debug visualization.

Events

On Weapon Fired

On Weapon Fired event will be called when the weapon was fired.

note

Keep in mind that this event will be called only on the server, so there is no need for checking authority nor using RPCs.

On Projectile Spawned

On Projectile Spawned event will be called when the projectile was spawned.

note

Keep in mind that this event will be called only on the server, so there is no need for checking authority nor using RPCs.

On Burst Finished

On Burst Finished event will be called when the burst was finished.

note

Keep in mind that this event will be called only on the server, so there is no need for checking authority nor using RPCs.

On Burst Interrupted

On Burst Interrupted event will be called when the burst was interrupted.

note

Keep in mind that this event will be called only on the server, so there is no need for checking authority nor using RPCs.

On Weapon Reloaded

On Weapon Reloaded event will be called when the weapon was reloaded.

note

Keep in mind that this event will be called only on the server, so there is no need for checking authority nor using RPCs.

On Ammo Sequence Updated

On Ammo Sequence Updated event will be called when the ammo sequence was updated.

On Ammo Count Updated

On Ammo Count Updated event will be called when the ammo count was updated.

• Ammo Count : New ammo count value.

On Safety Lock Updated

On Safety Lock Updated event will be called when the safety lock was updated.

• Safety Lock Enabled : New safety lock state.

On Fire Mode Updated

On Fire Mode Updated event will be called when the fire mode was updated.

• Fire Mode : New fire mode.