make particles fade away
Pre-release
Pre-release
More customizable particles (#15) * refactor: Remove mouse attraction code from particle compute shader * refactor: Adjust default particle world info time step to 0.01f * feat: Initialize particle system with configurable particle count * fix: Add missing particleCount parameter to Particles constructor * feat: Add initial speed parameter to Particles class * feat: Increase particle initial speed and store speed parameter * feat: Add particle lifetime and age-based opacity fading * feat: Add random lifetime variation to particle generation * particle stuff