nordic-skating / commit
docs: tilt to steer
PLAN.md | 15 +++++++++++++++ README.md | 16 +++++++++++++++- 2 files changed, 30 insertions(+), 1 deletion(-) diff --git a/PLAN.md b/PLAN.md index 13286ed..3bef7aa 100644 --- a/PLAN.md +++ b/PLAN.md @@ -168,6 +168,21 @@ cannot put spread into a sound that has none. **What would settle it**, if it matters: a recording made some hundreds of metres from the cracks, with the ice's thickness known. The paper's own data are of that kind. +### 5a. Tilt to steer — built, not tried on a phone + +Asked for by Pavel on 2026-10-10. A setting, off by default, shown only on phones and +tablets: lean the phone like a wheel to steer, level to let the skater skate itself. +Dragging still works with it on. + +Checked in a desktop browser pretending to be a phone, with made-up tilt: the setting +shows, is remembered, and leaning turns the skater. Not checked: a real phone, where +the things to judge are whether 4° of rest and 28° for full steering are right, whether +leaning is the right way round in each orientation, and whether an iPhone's request for +leave appears and works. It needs HTTPS, so it can only be tried on the live site. + +**Open.** There is no way to set which lean counts as level: it is level. Someone lying +on their side cannot use it. + ### 6. Phone controls **Waiting on Pavel**, who is still trying the touch steering and will send feedback. diff --git a/README.md b/README.md index c03f78e..61a734c 100644 --- a/README.md +++ b/README.md @@ -46,7 +46,7 @@ one side of every fork, for as long as you leave it. | To | Touch or mouse | Keyboard | |---|---|---| -| Steer left or right | Drag sideways from wherever you touch | ← → or A D | +| Steer left or right | Drag sideways from wherever you touch; or tilt the phone, if that is turned on in Settings | ← → or A D | | Turn right round, or circle an islet | Hold the steer over | the same | | Choose a way at a fork | A touch towards it on the way up to the fork | the same | | Sound on or off | The button at the top right | M | @@ -78,11 +78,25 @@ Each takes effect as it is touched, behind the box, and is remembered for next t | Setting | Choices | To begin with | |---|---|---| | Time of day | Surprise me, Day, Dusk, Night, Aurora | Surprise me: whichever the lake comes with | +| Tilt to steer (phones and tablets only) | on or off | off | | Impossible ice | on or off | off | | Lake | Another lake (the same as Randomize); a link back to this one | a different lake every visit | <img src="docs/screenshots/settings.png" alt="The settings box at the foot of the screen, under a night sky" width="320" /> +### Tilt to steer + +On a phone or tablet, Settings has **Tilt to steer**. Turned on, the phone is leaned +left or right like a wheel, about the line the skater looks along: more lean, tighter +turn, full steering at 28°. Within 4° of level counts as level, since nobody holds a +phone dead level, and held level the skater skates itself. It works held upright or on +its side, and dragging still works alongside it. + +An iPhone asks leave for this, each visit, at the first touch. If it has been refused +it is not asked again: Settings, Safari, Motion & Orientation Access turns it back on. +Browsers give a page the phone's tilt only over HTTPS, which the live site is and +`npm run dev` on a phone is not, so it cannot be tried on a phone from the dev server. + ### A different lake every visit A lake is a number from 1 to 999,999, and everything about it follows from the number: