RCWeb Symbol-Snap Display

The Symbol-Snap Display app (app/symbol-snap) turns a shared screen into a fast spot-the-match challenge. Players scan the QR code, open the companion controller card on their phones, and race to tap the one symbol that appears on both cards.

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What it does

• Shared-screen party play: The main display shows one eight-symbol card while every connected phone sees the same second card.
• Phone-first joining: A QR code opens symbol-snap-control directly into the current RCWeb room so new players can join instantly.
• Point race scoreboard: The display keeps an always-visible score table and awards a point to the first player who taps the matching symbol.
• Sprite-sheet artwork: The symbols are rendered from symbol-snap.png, an 8x8 sprite sheet with the first 57 cells populated, matching the full 57-card deck structure.

How it works

• Viewer-owned round logic: script.js generates the 57-card finite-projective-plane symbol deck, selects two cards per round, and chooses the next round as soon as someone scores.
• Shared controller state: The symbol-snap viewer pushes the exact same controller card layout to every symbol-snap-control client while still tracking individual player names and scores.
• Canvas sprite rendering: Both cards are drawn on <canvas> with random rotation, scale, and circular placement to recreate the feel of a shuffled Symbol-Snap card.

Launch RCWeb App