CGHOW | Ashif Ali

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hi guys in this video you will learn how to make a birds flock in unreal engine Niagara. flying birds randomly and facing the velocity and make a material for flap animation of birds wings and some more parameters in material to randomize color of birds.

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Video Transcript Summary: “Bird Flock Effect in Unreal Engine Niagara”

1. Introduction
   • Asif Ali introduces the tutorial on creating a bird flock effect in Unreal Engine using Niagara.
2. Scene Setup and Materials
   • The scene includes flying birds with animated wings. The wings are animated using materials, similar to the insect legs animation shown in a previous tutorial.
   • A volumetric sky with clouds is used for atmospheric effects, which is explained in a separate tutorial.
3. Materials and Texture Setup
   • Two materials are used: one for the bird’s body and one for the wings.
   • The body material uses a texture with random colors, and the wing material uses world offset for wing animation.
4. Wing Animation
   • A UV map for the bird’s wings is created and used to animate them.
   • The animation is achieved using a sine wave function for time-based movement, connected to world position offsets.
5. Particle System Setup
   • The bird particles are set up using Niagara emitters.
   • The first step is spawning a single bird and applying the two materials.
   • A dynamic parameter is used to control the wing flap animation.
6. Randomizing Properties
   • Asif shows how to randomize the bird’s color, movement direction, and speed.
   • This includes randomizing color via a color parameter and randomizing the velocity and orientation of the birds with a curl noise setting.
7. Velocity and Orientation
   • To make the birds face the correct direction during movement, the velocity is adjusted, and an initial orientation is added.
8. Flap Speed and Strength Randomization
   • The wing flap speed and strength are randomized using float parameters.
   • Some birds flap faster, while others flap slower, adding variety to the flock’s behavior.
9. Final Adjustments and Conclusion
   • The size, speed, and movement of the birds are randomized to make the flock appear more natural.
   • The final result shows birds flying randomly with varied speeds, sizes, and wing flaps.
10. Outro

• Asif encourages viewers to like, comment, and subscribe for more tutorials.

Key Takeaways

• Use dynamic parameters and world offset to animate the wings of birds.
• Randomize particle properties like color, speed, size, and movement to create a more natural flocking effect.
• Utilize Niagara’s curl noise and orientation settings to add variety and randomness to particle behavior.

Trendy Tags:

• #UnrealEngine
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• #WingAnimation