Let's Build the RPG! - 22 – Unreal Engine 5 Niagara Collision Tutorial with GPU Ray Tracing
This episode is a showcase of the options for enabling collision within Niagara Systems. First I review CPU collision, the pros and cons of that, and automatically spawning splash particles off of Event Handler collision. Then we get into the downsides of GPU collision, but we turn on the brand new GPU ray traced particle collision option. By the end of the episode we set up a fountain blueprint asset complete with Niagara systems, sound, and the ability to modify the number of particles via the blueprint. Link to spreadsheet of all content packs, material, and the 2 sounds used in this episode (and everything else used in this series, up to episode 22): https://docs.google.com/spreadsheets/... 00:00 Intro 00:23 Today's Goals and Key Concepts 02:03 Initial Blueprint for Fountain and Niagara System 05:07 Customizing the Niagara System Fountain 11:44 COLLISION METHOD 1: CPU Collision generating Splash Particles 18:06 COLLISION METHOD 2: GPU Depth Buffer Collision 20:13 COLLISION METHOD 3: GPU Ray Trace Collision with issue fixes 23:32 Setting up second sysystem and emitter for the fountain splashes 28:37 Switching water material of fountain to better see splash particles 29:46 ISSUE FIX: How to kill the particles after a number of collisions 33:34 Making # of fountain particles dynamic based on blueprint variable 37:33 Setting up audio for fountain 43:06 Adjusting audio pitch and volume based on # of particles 47:18 Conclusion New episode released every Saturday morning! Footstep VFX Content Pack: https://www.unrealengine.com/marketpl... City Park Environment Collection Content Pack: https://www.unrealengine.com/marketpl... Sound content comes from Zapsplat: https://www.zapsplat.com/ Direct References How to Turn on Niagara GPU Ray Traced Collision: https://docs.unrealengine.com/5.0/en-... Niagara Collision Tutorial from TharleVFX that helped me make this episode: • Niagara 105 - GPU Particles and Collision ... Water System in Unreal Engine 5: https://docs.unrealengine.com/5.0/en-... Niagara Effects in Unreal Engine 5: https://docs.unrealengine.com/5.0/en-...
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