Metal Scrape

Metal Impacts · Volume 1

A stretched metallic contact leaves a scraping fragment trail. A leading flash and separate tail keep the hit readable.

Use: metal scrape feedback in combat.

Top: Original · Fine / smooth. Bottom: Chunky / step 3 · Bold / step 6. Matched preset framing at 60 FPS; select Play to compare.

Niagara asset

• Asset: NS_VX_Impact_MetalScrape
• Shipped path: /Game/VoxelHitPack_Vol01/Systems/VoxelImpacts/NS_VX_Impact_MetalScrape
• Presentation: Original system with three additional parameter presets.

Supported parameters

Values below are extracted from the shipped system. Colors use linear RGBA; vector components are shown explicitly. Restart after editing, particularly counts and seed values.

Parameter	Type	Shipped default	Hard limits	Behavior and dependencies
User.AnimationFrameStep	Int	1	1–12	1 = smooth. 2-12 = hold each pose for N reference frames at 60 Hz. 3 = 20 poses/sec; 6 = 10. Lifetime is unchanged.
User.BodyCount	Int	42	≥ 0.0	Layer voxel count; zero disables the layer. Restart after editing.
User.BodyDuration	Float	0.12	≥ 0.02	Seconds; restart after editing. Total Duration limits all layers. Requires BodyCount > 0. Cannot extend the effect beyond its total Duration.
User.BurstRotationVariation	Float	25	0–180	Maximum random yaw of the particle burst, degrees. Enabled when User.Randomize = true.
User.Color	Linear RGBA	{“r”:1,“g”:0.22,“b”:0.01,“a”:1}	No exposed bound	CPU voxel impact control. Restart to preview consistently.
User.Duration	Float	0.95	≥ 0.05	Seconds; restart after editing. Total Duration limits all layers.
User.FlashCount	Int	10	≥ 0.0	Layer voxel count; zero disables the layer. Restart after editing.
User.FlashDuration	Float	0.045	≥ 0.008	Seconds; restart after editing. Total Duration limits all layers. Requires FlashCount > 0. Cannot extend the effect beyond its total Duration.
User.FlashIntensity	Float	5	No exposed bound	CPU voxel impact control. Restart to preview consistently. Requires FlashCount > 0.
User.FlashSize	Float	12	≥ 0	Centimeters before Size. GridSize zero disables position snapping. Requires FlashCount > 0.
User.FragmentColor	Linear RGBA	{“r”:1,“g”:0.6,“b”:0.18,“a”:1}	No exposed bound	CPU voxel impact control. Restart to preview consistently. Requires FragmentCount > 0.
User.FragmentCount	Int	72	≥ 0.0	Layer voxel count; zero disables the layer. Restart after editing.
User.FragmentDuration	Float	0.32	≥ 0.02	Seconds; restart after editing. Total Duration limits all layers. Requires FragmentCount > 0. Cannot extend the effect beyond its total Duration.
User.FragmentSize	Float	1.7	≥ 0	Centimeters before Size. GridSize zero disables position snapping. Requires FragmentCount > 0.
User.FragmentSpeed	Float	150	No exposed bound	CPU voxel impact control. Restart to preview consistently. Requires FragmentCount > 0.
User.Gravity	Float	140	No exposed bound	CPU voxel impact control. Restart to preview consistently.
User.GridSize	Float	1	≥ 0	Centimeters before Size. GridSize zero disables position snapping.
User.Height	Float	6	≥ 0.0	Centimeters before Size. GridSize zero disables position snapping.
User.ImpactDirection	Vector3	{“x”:0,“y”:0,“z”:0}	No exposed bound	World-space impact direction; normalized internally. Zero falls back to world +Z.
User.Intensity	Float	1.5	≥ 0	Global nonnegative multiplier.
User.Radius	Float	20	≥ 0.0	Centimeters before Size. GridSize zero disables position snapping.
User.RandomizationStrength	Float	1	0–1	Master variation strength, clamped 0..1; 0 preserves authored appearance. Enabled when User.Randomize = true.
User.Randomize	Bool	true	No exposed bound	Enable extra voxel variation. Restart after changing seed or toggle.
User.RandomSeed	Int	0	No exposed bound	0 chooses a fresh variation each activation; nonzero repeats a chosen variation. Restart after editing.
User.ResidualColor	Linear RGBA	{“r”:0.18,“g”:0.12,“b”:0.055,“a”:1}	No exposed bound	CPU voxel impact control. Restart to preview consistently. Requires ResidualCount > 0.
User.ResidualCount	Int	12	≥ 0	Layer voxel count; zero disables the layer. Restart after editing.
User.ResidualDuration	Float	0.25	≥ 0.02	Seconds; restart after editing. Total Duration limits all layers. Requires ResidualCount > 0. Cannot extend the effect beyond its total Duration.
User.ResidualSize	Float	2	≥ 0	Centimeters before Size. GridSize zero disables position snapping. Requires ResidualCount > 0.
User.ScrapeDuration	Float	0.5	No exposed bound	Seconds over which the one-shot scrape releases its sparks; keep total Duration longer than this plus FragmentDuration. Cannot extend the effect beyond its total Duration.
User.SecondaryColor	Linear RGBA	{“r”:1,“g”:0.85,“b”:0.32,“a”:1}	No exposed bound	CPU voxel impact control. Restart to preview consistently.
User.ShockwaveCount	Int	0	≥ 0.0	Layer voxel count; zero disables the layer. Restart after editing.
User.ShockwaveDuration	Float	0.2	≥ 0.02	Seconds; restart after editing. Total Duration limits all layers. Requires ShockwaveCount > 0. Cannot extend the effect beyond its total Duration.
User.ShockwaveRadius	Float	25	≥ 0	Centimeters before Size. GridSize zero disables position snapping. Requires ShockwaveCount > 0.
User.ShockwaveSize	Float	1.8	≥ 0	Centimeters before Size. GridSize zero disables position snapping. Requires ShockwaveCount > 0.
User.Size	Float	1	≥ 0	Global nonnegative multiplier.
User.SpreadVariation	Float	0.18	0–0.9	Maximum fractional variation in particle distance from the origin. Enabled when User.Randomize = true.
User.VoxelSize	Float	4	≥ 0	Centimeters before Size. GridSize zero disables position snapping.
User.VoxelSizeVariation	Float	0.3	0–0.9	Maximum fractional size variation, clamped 0..0.9. Enabled when User.Randomize = true.

No exposed bound means no bound was recorded in the asset metadata; it is not a recommended operating range. Begin with the shipped values. See units and editing, stepping, and layer lifetime caps.

Exact demo overrides

These are four instances of this system. Unlisted controls inherit their asset defaults. All three additional presets are parameter variations, not additional system assets.

Parameter	Original	Fine / smooth	Chunky / step 3	Bold / step 6
RandomSeed	41	41	41	41
AnimationFrameStep	1	1	3	6
Size	1	0.9	0.95	1.12
VoxelSize	Inherited	2.6	6.4	4.6
FlashSize	Inherited	7.8	19.2	13.8
FragmentSize	Inherited	1.105	2.72	1.955
ResidualSize	Inherited	1.3	3.2	2.3
Intensity	Inherited	1.275	1.5	1.68

Related effects

• Metal Spark
• Metal Spark Shower
• Armor Break
• Metal Crush

Back to catalog · Spawn in Blueprint · Orientation · Randomization