🎮 Overview NostalgicRainSystem creates a fully dynamic rain simulation with:
Falling rain particles (with wind + tilt)
Splash sub-emitters on impact
Continuous rain sound
Random thunder sounds
Realistic lightning flashes with configurable color Debug gizmos to visualize spawn zone
Dynamic LOD system (auto-optimizes particle emission based on FPS)
Works with both HDRP and URP using appropriate transparent shaders