Unreal Engine 5.5 - Character FX: Magical Energy Smoke (Niagara Tutorial)

Tech Tutorial Summary (Unreal Engine 5.5: Character FX — Magical Energy Smoke with Niagara)

Goal / Effect Being Built

Create a character-attached magical energy / smoke effect using:

• A custom material featuring:
  • Fresnel edge glow
  • Animated noise-driven color variation
• A Niagara system that:
  • Spawns particles on the character’s surface
  • Uses the material to render a swirl and dissolving look

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Scene Setup (From Scratch)

The tutorial uses Cinematics → Sequencer:

1. Create or open a Sequencer
2. Drag the character animation into the Sequencer
3. Enable looping/playback

Additional notes:

• Rotate the view/character as needed.
• Optionally add lighting for better visibility of the glow.

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Material Creation (Glowing Character Edges)

Edge Glow via Fresnel

• Start with a Fresnel node to generate an edge highlight glow.
• Tune Power so the glow stays mostly on the edges.

Noise-Driven Masking

• Use noise to control where the effect appears, via either:
  • Noise with good UVs, or
  • 3D noise
• Adjust:
  • Noise scale
  • Detail / levels (reduce turbulence so it doesn’t look overly busy)

Animated Movement

• Use Global Position + Time (often multiplying the vector).
• Primarily scroll along the Z axis.
• Time can be scaled (e.g., multiplying by ~50), and direction can be reversed with add/subtract.

Color Shaping

• Combine Fresnel + noise to colorize the glow (with purple emphasis).
• Use Lerp between two colors:
  • Purple (white portion)
  • Blue (black portion)

Brightness / Shinier Tuning

• Multiply glow strength for punchier highlights (example referenced: ×5 for brighter small areas).

Apply Material

• Apply it to the character (e.g., by dragging it onto the character mesh).

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Niagara Setup (Surface-Triangle Emission + Attachment)

Create the Niagara System

• Create a Niagara system (referenced as something like “NS vector effect”).

Key Configuration Steps

• Remove unnecessary settings such as:
  • Speed
  • Location of the sphere
  • Gravity
• Set emission source to the skeletal mesh location
• Choose sampling mode:
  • Surface triangles (instead of bones)

Make It Attach to the Character

• Create a child Niagara setup so it inherits/attaches properly.
• Add the Niagara component and place it into the Sequencer.
• Ensure Niagara is attached to the character’s skeletal mesh component.

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Niagara Material Effect (Swirl + Dissolve Animation)

Swirl / Distortion Construction

• Assign the material to the Niagara renderer.
• Build the look using:
  • Noise texture + radial math
  • Radial exponent and multipliers
• Use a custom rotation approach:
  • Center texture coordinates at (0.5, 0.5)
  • Time-based rotation
  • Constrain rotation onset using Radial Saw so turning starts where white/black regions dictate

Dynamic Parameters

• Use dynamic parameters to control animation timing/intensity, often with ranges like:
  • 0 to 1
  • -1 to 1 for dissolve/opacity behavior

Particle Appearance Controls

• Two-color look (purple + black/blue variation)
• Adjust:
  • Opacity / alpha strength (to be less soft or stronger)
  • Size (examples referenced like 50/40, later scaled down as needed)
  • Fade-in / fade-out

Particle Motion Behavior

• Add gravity-like upward motion by setting positive gravity (example: ~30–40).
• Adjust response rate (example: ~30).
• Add size change over lifetime (smaller early values, then decreasing as needed).
• Tune depth / clipping behavior (noted as “cutting… use one depth”).

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Dissolve / Distortion via Dynamic Parameters

• Add dissolve by:
  • Applying additional distortion
  • Combining math operations (subtract/multiply style) into the opacity path
• Update dynamic parameter values so the effect:
  • dissolves from the beginning
• Dissolve can also incorporate:
  • Rising behavior
  • Directional speed adjustments (to make it appear to move backward/forward)

Note: Dynamic parameter updates may require saving/refreshing to take effect.

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Layering / Variation Passes

To create more interesting ensembles, the tutorial duplicates the effect into multiple layers:

• Layer 1: stronger/more noticeable swirl
• Layer 2: weaker swirl, adjusted:
  • life and life multiplier
  • spawn rate
  • speed
  • size (larger + smaller ensemble effect)

Optional extra look:

• Add an ember/ripple-like secondary effect using Ripple Noise.

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Performance Note (GPU Particles)

If many particles are needed:

• Enable GPU particles
• Use a fixed limit (example: ~500)
• GPU particle settings can change how you must tune:
  • size
  • behavior/response

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Main Speakers / Sources

• Asif Ali (creator/host; referenced opening: “Hey guys, I’m Asif Ali…”)
• CG How (channel name/source referenced in subtitles)