UKismetSystemLibrary::DrawDebugFloatHistoryLocation
#include "Kismet/KismetSystemLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintCallable
Description
Draws a 2D histogram of a float value's history at a fixed world location, always billboarded to face the first player's camera.
Caveats & Gotchas
- • Only compiled in development builds — calls are stripped from Shipping/Test via the DevelopmentOnly meta flag, so don't rely on it for runtime UI.
- • The histogram always faces the camera of the first local player; it cannot be oriented manually. Use DrawDebugFloatHistoryTransform if you need explicit orientation control.
- • FloatHistory must already contain samples added via AddFloatHistorySample — passing a freshly constructed struct draws an empty graph.
Signature
static void DrawDebugFloatHistoryLocation(const UObject* WorldContextObject, const FDebugFloatHistory& FloatHistory, FVector DrawLocation, FVector2D DrawSize, FLinearColor DrawColor = FLinearColor::White, float Duration = 0.f)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| WorldContextObject | const UObject* | World context used to resolve the world to draw into. | — |
| FloatHistory | const FDebugFloatHistory& | The sample history struct built up via AddFloatHistorySample. | — |
| DrawLocation | FVector | World-space location for the histogram; it always faces the first local player's camera. | — |
| DrawSize | FVector2D | Screen-space size in world units of the drawn histogram. | — |
| DrawColor | FLinearColor | Color of the histogram lines and border. | FLinearColor::White |
| Duration | float | How long the debug draw persists, in seconds. 0 draws for a single frame. | 0.f |
Return Type
void Example
Plot a tracked value each tick C++
// Member: FDebugFloatHistory SpeedHistory;
void AMyPawn::Tick(float DeltaTime)
{
Super::Tick(DeltaTime);
SpeedHistory = UKismetSystemLibrary::AddFloatHistorySample(GetVelocity().Size(), SpeedHistory);
UKismetSystemLibrary::DrawDebugFloatHistoryLocation(this, SpeedHistory, GetActorLocation() + FVector(0, 0, 100), FVector2D(100, 50), FLinearColor::Green, 0.f);
}Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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