UKismetMathLibrary::Vector_Distance

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Returns the Euclidean distance between two 3D points. Equivalent to (V2 - V1).Size().

Caveats & Gotchas

• Involves a square root and is more expensive than Vector_DistanceSquared. For distance comparisons (e.g., "is the enemy within range?"), prefer the squared variant to avoid the sqrt.
• Returns a double — in pre-UE5 projects compiled with 32-bit FVector (CORE_API double is only guaranteed in UE 5.x), the result precision depends on the engine version.

Signature

static UE_INL_API double Vector_Distance(FVector V1, FVector V2);

Parameters

Name	Type	Description	Default
V1	FVector	The first point.	—
V2	FVector	The second point.	—

Return Type

double

Example

Check if a pickup is within interaction range C++

double Dist = UKismetMathLibrary::Vector_Distance(
    Player->GetActorLocation(),
    Pickup->GetActorLocation());
if (Dist <= InteractRange)
{
    Pickup->Collect(Player);
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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