godot-platform-mobile
Platform: Mobile
Touch-first input, safe area handling, and battery optimization define mobile development.
NEVER Do (Expert Mobile Rules)
Input & Display
- NEVER use mouse events for touch interaction — Relying on
InputEventMouseButtonon mobile is unreliable. Always useInputEventScreenTouchandInputEventScreenDragfor high-fidelity multi-touch support. - NEVER ignore display safe areas (notches/cutouts) — UI placed behind a camera notch is unusable. Query
DisplayServer.get_display_safe_area()and offset critical UI accordingly. - NEVER assume fixed orientation — Locking a landscape game without handling the
size_changedsignal leads to broken layouts on foldable devices or tablet orientation shifts.
Battery & Performance
- NEVER maintain high framerate when backgrounded — Keeping an app at 60 FPS in the background drains battery. Use
NOTIFICATION_APPLICATION_PAUSEDto dropEngine.max_fpsto 1. - NEVER use the Forward+ renderer for mobile — Most mobile GPUs are not optimized for Forward+. Use the dedicated Mobile or Compatibility renderers for optimal fill-rate.
- NEVER leave 'ETC2/ASTC' texture compression disabled — Uncompressed desktop textures will crash mobile devices due to VRAM exhaustion.
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