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Mickael Daniel edited this page Jan 27, 2019 · 7 revisions

Target System Plugin

An UE4 plugin written entirely in C++ which adds support for a simple Dark Souls inspired Camera Lock On / Targeting system.

It was first developed and tested in Blueprints following the implementation of the people over at Lurendium, with this tutorial series: Part 1, Part 2, Part 3, and then converted and rewritten into a C++ module and plugin.

Features

  • Customizable with a set of options that can be overridden in Blueprints.
  • Easy setup: only one Actor component to attach and a minimum of one functions to bind to input.
  • Target closest enemy (Pawns by default, customizable with TargetableActors UPROPERTY).
  • Break on Line of Sight when getting behind an object.
  • Break Target when getting outside minimum distance to enable.
  • Simple TargetLockedOn Widget included, can be customized / overridden.
  • Option to control character rotation when locked on.
  • Switch to new target with axis input (on mouse / gamepad axis movement).
  • Two Blueprint implementable events on component on Target Locked On and Off.

Installation

From the Marketplace

Subscribe to https://www.unrealengine.com/marketplace/target-system-component-plugin, and Hit the button "Install in the Engine" button from the Vault. Then, ensure the plugin is enabled for your project.

Manual Installation

Download the latest TargetSystem.zip pre-built plugin zip from the Release page, and drop the content in your project's Plugins folder. Then, load up Unreal Editor, check the Plugins page and see if TargetSystem plugin is enabled.

Setup

Check the Setup and Installation wiki page.

Options

  • float MinimumDistanceToEnable: The minimum distance to enable target locked on.
  • TSubclassOf<AActor> TargetableActors: The AActor Subclass to search for targetable Actors.
  • TSubclassOf<UUserWidget> TargetLockedOnWidgetClass: The Widget Class to use when locked on Target. If not defined, will fallback to a Text-rendered widget with a single O character.
  • float TargetLockedOnWidgetDrawSize: The Widget Draw Size for the Widget class to use when locked on Target.
  • float BreakLineOfSightDelay: The amount of time to break line of sight when actor gets behind an Object.
  • float StartRotatingThreshold: Lower this value is, easier it will be to switch new target on right or left.
  • bool ShouldControlRotationWhenLockedOn: Whether or not the character rotation should be controlled when Target is locked on. If true, it'll set the value of bUseControllerRotationYaw and bOrientationToMovement variables on Target locked on / off. Set it to true if you want the character to rotate around the locked on target to enable you to setup strafe animations.
  • FVector TargetLockedOnWidgetRelativeLocation: The Relative Location to apply on Target LockedOn Widget when attached to a target.

Blueprint Functions / Events

  • void TargetActor(): Function to call to target a new actor.
  • void TargetActorWithAxisInput(float AxisValue): Function to call to target a new actor with Axis input, on right or left.
  • OnTargetLockedOff(AActor* TargetActor): Called when a target is locked off, either if it is out of reach (based on MinimumDistanceToEnable) or behind an Object.
  • OnTargetLockedOn(AActor* TargetActor): Called when a target is locked on.

License

MIT License.

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