persistence.ts

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`f1262fd9` 2026-04-12 Pavel Safronov	1	const DATA_VERSION = 2
	2
	3	const KEYS = {
	4	settings: 'nuts-settings-v2',
	5	snapshot: 'nuts-snapshot-v2',
	6	} as const
	7
	8	// ── Settings ───────────────────────────────────────────────────────────────
	9
	10	export interface PersistedSettings {
	11	v: number
	12	nutRadius: number
`937f9abc` 2026-04-12 Pavel Safronov	13	gravityMode?: string
	14	vibrateEnabled?: boolean
`98ba5504` 2026-04-13 Pavel Safronov	15	vibrateItems?: boolean
	16	vibrateEdges?: boolean
`74d506c6` 2026-04-12 Pavel Safronov	17	kind?: string
`98ba5504` 2026-04-13 Pavel Safronov	18	randomPool?: string[]
`f1262fd9` 2026-04-12 Pavel Safronov	19	}
	20
	21	export function loadSettings(): PersistedSettings \| null {
	22	try {
	23	const raw = localStorage.getItem(KEYS.settings)
	24	if (!raw) return null
	25	const parsed = JSON.parse(raw) as PersistedSettings
	26	if (parsed.v !== DATA_VERSION) return null
	27	return parsed
	28	} catch {
	29	return null
	30	}
	31	}
	32
	33	export function saveSettings(s: Omit<PersistedSettings, 'v'>): void {
	34	try {
	35	localStorage.setItem(KEYS.settings, JSON.stringify({ v: DATA_VERSION, ...s }))
	36	} catch { /* storage full – ignore */ }
	37	}
	38
	39	// ── Nut snapshot ───────────────────────────────────────────────────────────
	40
	41	export interface NutSnapshot {
	42	x: number // normalised 0..1 (relative to screen size)
	43	y: number
	44	angle: number
	45	radius: number // absolute px
	46	colorIndex: number
`cfe80f49` 2026-04-13 Pavel Safronov	47	kind: 'nut' \| 'gem' \| 'balloon' \| 'metalnut' \| 'rock' \| 'stressball'
`f1262fd9` 2026-04-12 Pavel Safronov	48	gemVariant: number
	49	}
	50
	51	export interface SnapshotRecord {
	52	v: number
	53	screenW: number
	54	screenH: number
	55	nuts: NutSnapshot[]
	56	}
	57
	58	export function saveSnapshot(
`cfe80f49` 2026-04-13 Pavel Safronov	59	nuts: Array<{ body: { position: { x: number; y: number }; angle: number }; radius: number; colorIndex: number; kind: 'nut' \| 'gem' \| 'balloon' \| 'metalnut' \| 'rock' \| 'stressball'; gemVariant: number }>,
`f1262fd9` 2026-04-12 Pavel Safronov	60	screenW: number,
	61	screenH: number,
	62	): void {
	63	try {
	64	const record: SnapshotRecord = {
	65	v: DATA_VERSION,
	66	screenW,
	67	screenH,
	68	nuts: nuts.map(n => ({
	69	x: n.body.position.x / screenW,
	70	y: n.body.position.y / screenH,
	71	angle: n.body.angle,
	72	radius: n.radius,
	73	colorIndex: n.colorIndex,
	74	kind: n.kind,
	75	gemVariant: n.gemVariant,
	76	})),
	77	}
	78	localStorage.setItem(KEYS.snapshot, JSON.stringify(record))
	79	} catch { /* storage full – ignore */ }
	80	}
	81
	82	export function loadSnapshot(): SnapshotRecord \| null {
	83	try {
	84	const raw = localStorage.getItem(KEYS.snapshot)
	85	if (!raw) return null
	86	const record = JSON.parse(raw) as SnapshotRecord
	87	if (record.v !== DATA_VERSION) return null
	88	return record
	89	} catch {
	90	return null
	91	}
	92	}
	93
	94	export function clearSnapshot(): void {
	95	localStorage.removeItem(KEYS.snapshot)
	96	}