Throw Physics Object (AN_TFA_ThrowPhysicsObject)

Detaches an object and throws it with physics.

Asset path: /Game/InfimaGames/TacticalFPSAnimations/Common/Core/Animation/AN_TFA_ThrowPhysicsObject

AN_TFA_ThrowPhysicsObject is the character-owned notify you use when an attached prop should transition into free physics. It is a clean fit for magazine tosses, thrown handheld props, and any animation moment where a temporary object should detach and fly into the world.

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Quick Navigation

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• Purpose

• Notify Blueprint Flow

• What ThrowPhysicsObject Does

• Parameters

• Placement Tips

• Troubleshooting

• Notes and Gotchas

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Purpose

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Typical uses include:

• Tossing a magazine away

• Throwing a small object during an animation

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Owner Requirement

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This notify only works when the active animation is playing on a mesh owned by BP_TFA_BaseCharacter.

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Notify Blueprint Flow

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This notify is implemented in Received_Notify. It gets the owner from MeshComp, casts that owner to BP_TFA_BaseCharacter, and then calls Character.ThrowPhysicsObject(...). If the cast fails, nothing happens.

The notify itself does not apply the forces. It delegates the actual spawn and throw behavior to BP_TFA_BaseCharacter::ThrowPhysicsObject.

Readable Blueprint Flow

Received_Notify
  -> MeshComp.GetOwner()
  -> Cast to BP_TFA_BaseCharacter
  -> Character.ThrowPhysicsObject(
       ClassToSpawn        = ObjectToSpawn,
       SpawnSocketName     = SpawnSocketName,
       LocationOffset      = LocationOffset,
       RotationOffset      = RotationOffset,
       ThrowForce          = ThrowForce,
       ThrowRotationForce  = ThrowRotationForce,
       bClearSocketItem    = DestroySocketItem
     )
  -> ReturnValue = false

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What ThrowPhysicsObject Does

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Based on the current Base Character (BP_TFA_BaseCharacter) implementation, the character function:

• Spawns the actor class provided by the notify at a socket-derived transform

• Finds a PrimitiveComponent on the spawned actor

• Applies linear impulse with bVelChange = true

• Applies angular impulse with bVelChange = true using a random axis

• Optionally destroys attached actors tagged DisposableItem when bClearSocketItem = true

That cleanup path is especially useful when an earlier notify spawned an attached prop and you want to avoid duplicates.

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Parameters

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• ObjectToSpawn

  • Forwarded as ClassToSpawn

• SpawnSocketName

• LocationOffset

• RotationOffset

• ThrowForce

• ThrowRotationForce

• DestroySocketItem

  • Forwarded as bClearSocketItem

Default Values

• ObjectToSpawn = None

• SpawnSocketName = ik_hand_l

• LocationOffset = (0, 0, 0)

• RotationOffset = (0, 0, 0)

• ThrowForce = 80.0

• ThrowRotationForce = 80.0

• DestroySocketItem = true

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Placement Tips

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• Place the notify on the exact frame where the object should release

• Use DestroySocketItem = true when a previous notify spawned or attached a disposable prop

• Test the timing at a few montage play rates, because small shifts are very noticeable during throws

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Troubleshooting

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• Nothing happens

  • The animation is playing on a mesh not owned by BP_TFA_BaseCharacter

  • ObjectToSpawn is None, and your character implementation expects a valid class

• The throw direction feels wrong

  • Check whether the character function uses socket forward, socket up, or another basis

  • Adjust RotationOffset to bias the throw direction

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Notes and Gotchas

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• This is a character-owned notify, so it will not do anything on weapon-only montages

• DestroySocketItem = true is primarily a cleanup feature

• That cleanup destroys previously attached actors tagged DisposableItem, which helps prevent duplicate props when a montage loops or restarts

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Related Pages

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• Spawn Object Attached (AN_TFA_SpawnObjectAttached)

• Base Character (BP_TFA_BaseCharacter)

• Base Physics Object (BP_TFA_BasePhysicsObject)