Velvet Hearth

Develop a full-screen interactive generative art application named Velvet Hearth, centered on thousands of glowing particles to create a tactile ambient user experience. First, build the core particle physics system: enable smooth field movement interaction where users dragging their cursor across the screen naturally pulls ember particles into corresponding flowing motion, add click-triggered shockwave ring effects to disperse surrounding particles with gradual fade-out animation, design four distinct particle formation presets including starfish-shaped clusters, jellyfish floating structures, nautilus spiral arrangements and natural current-like streams, support one-click switching between these presets without disrupting existing particle dynamics. Next, implement dynamic behavior modes, support toggling between growth mode where particles gradually multiply and spread across the screen with natural boundary limits and orbit mode where all particles rotate around the user's cursor position with adjustable rotation radius, add a slider control to tune bloom intensity from subtle soft glow to bright saturated luminous effect, include a one-click re-seed function that resets the entire particle system to initial state with random parameter variations for new experience on each trigger. Then, integrate optional audio feature: add soft atmospheric ambient tones that trigger subtly when particles move or interact, ensuring audio remains unobtrusive to the visual experience. For visual design, adopt warm ember orange and red as the core particle color palette, add rare teal glimmer particles that appear randomly every few seconds to create visual contrast, embed motion-reactive physics where particle speed and trajectory adjust in real time based on user input speed and direction. Finally, add a minimal unobtrusive HUD at the bottom of the screen that only displays all control options without blocking the main visual canvas, ensure the entire application runs smoothly at 60fps on standard devices without lag during prolonged interaction.