Metal Spark
Metal Impacts · Volume 1
A compact warm spark burst mixes bright fragments and small lingering embers.
Use: Metal-on-metal contacts.
Niagara asset
Section titled “Niagara asset”- Asset:
NS_Hit_MetalSpark_Voxel - Shipped path:
/Game/VoxelHitPack_Vol01/Systems/MetalSparkHitVoxel/NS_Hit_MetalSpark_Voxel - Presentation: Original system with three additional parameter presets.
Supported parameters
Section titled “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.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”:0.42,“b”:0.08,“a”:1} | No exposed bound | Main tint of sparks, embers and ring. Flash core stays whiter. |
User.DustCount |
Int | 25 | ≥ 0 | Number of small glowing ember dots that float upward. |
User.Gravity |
Float | 1 | No exposed bound | Gravity multiplier for the main sparks. |
User.Intensity |
Float | 12 | ≥ 0 | Emissive brightness multiplier. |
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.Size |
Float | 1 | ≥ 0 | Uniform size multiplier for all sprites. |
User.SparkCount |
Int | 40 | ≥ 0 | Number of main sparks spawned per hit. |
User.Speed |
Float | 1 | No exposed bound | Multiplier for the initial velocity of sparks and embers. |
User.SpreadVariation |
Float | 0.18 | 0–0.9 | Maximum fractional variation in particle distance from the origin. Enabled when User.Randomize = true. |
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
Section titled “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 | 0.65 | 1.6 | 1.15 |
Speed |
Inherited | 1.1 | 0.8 | 1.3 |
Intensity |
Inherited | 10.2 | 12 | 13.44 |
Related effects
Section titled “Related effects”Back to catalog · Spawn in Blueprint · Orientation · Randomization