rshtirmer 3142f9ddcd feat(vampire-survivors): upgrade to retina/DPR template patterns ...

Migrate all rendering from fixed 800x600 to dynamic DPR-aware canvas
sizing with PX scaling factor. The game now renders at native device
resolution on retina displays without CSS upscaling blur.

Changes:
- Constants.js: full rewrite with DPR detection, canvas sizing, PX
  scale factor; all spatial values (sizes, speeds, ranges, radii)
  multiplied by PX; time/logic values unchanged
- GameConfig.js: add Scale.FIT, CENTER_BOTH, zoom 1/DPR, roundPixels,
  antialias, preserveDrawingBuffer
- index.html: responsive viewport, full-screen container
- main.js: add render_game_to_text() and advanceTime() test hooks
- Scenes: SAFE_ZONE-aware UI positioning, proportional font sizing
  via UI ratios, PX-scaled layout in GameOverScene/UIScene/GameScene
- Entities: PX-aware pixel art sprite scale for Player, Enemy, XpGem
- Systems: PX-scaled particle sizes, spawn margins, weapon visuals,
  projectile knockback, garlic radius growth

Co-Authored-By: Claude <noreply@anthropic.com>

2026-02-23 16:52:58 -05:00

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