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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 | import { useEffect, useCallback } from 'react' import type { MutableRefObject } from 'react' import type { RAFContext } from '../engine/rafContext' import type { ConstructionElement, PropositionDef } from '../types' import { replayConstruction } from '../engine/replayConstruction' import { mergeProofFacts } from '../engine/factStore' import { getPoint } from '../engine/constructionState' import type { UseEuclidMusicReturn } from '../audio/useEuclidMusic' interface UseCompletionFlowOptions { rafCtx: RAFContext isComplete: boolean playgroundMode: boolean | undefined proposition: PropositionDef propositionId: number onComplete?: (propId: number) => void audioEnabled: boolean sayCorrection: () => void musicRef: MutableRefObject<UseEuclidMusicReturn | null> } /** * Manages the completion lifecycle: * - Fires onComplete callback when proposition is solved * - Handles Prop 1 triangle orientation correction * - Auto-selects Move tool for draggable props * - Notifies music system * - Runs the wiggle animation to invite point dragging * - Auto-triggers wiggle 400ms after completion */ export function useCompletionFlow({ rafCtx, isComplete, playgroundMode, proposition, propositionId, onComplete, audioEnabled, sayCorrection, musicRef, }: UseCompletionFlowOptions) { // ── Fire onComplete callback and auto-select Move tool ── useEffect(() => { if (isComplete) { if (onComplete && !playgroundMode) onComplete(propositionId) if (proposition.id === 1) { const state = rafCtx.constructionRef.current const pA = getPoint(state, 'pt-A') const pB = getPoint(state, 'pt-B') const pC = getPoint(state, 'pt-C') if (pA && pB && pC) { const abx = pB.x - pA.x const aby = pB.y - pA.y const cross = abx * (pC.y - pA.y) - aby * (pC.x - pA.x) if (cross < 0) { const center = { x: (pA.x + pB.x) / 2, y: (pA.y + pB.y) / 2 } if (center) { rafCtx.correctionRef.current = { active: true, startTime: performance.now(), duration: 900, center, fromAngle: 0, toAngle: Math.PI, } rafCtx.correctionActiveRef.current = true rafCtx.setIsCorrectionActive(true) if (audioEnabled) { sayCorrection() } } } } } if (!playgroundMode && proposition.draggablePointIds && !rafCtx.correctionActiveRef.current) { rafCtx.setActiveTool('move') rafCtx.activeToolRef.current = 'move' } if (!playgroundMode) musicRef.current?.notifyCompletion() } else { rafCtx.correctionRef.current = null rafCtx.correctionActiveRef.current = false rafCtx.setIsCorrectionActive(false) } }, [ isComplete, onComplete, propositionId, proposition.draggablePointIds, proposition.id, audioEnabled, sayCorrection, ]) // ── Wiggle animation — invite kids to drag moveable points ── const startWiggle = useCallback( (delayMs: number = 0) => { // Cancel any existing wiggle rafCtx.wiggleCancelRef.current?.() rafCtx.wiggleCancelRef.current = null const prop = rafCtx.propositionRef.current const computeFn = prop.computeGivenElements // Collect all moveable points: given draggable + free (playground) const initialPositions = new Map<string, { x: number; y: number }>() const initialActions = [...rafCtx.postCompletionActionsRef.current] const draggableSet = new Set(prop.draggablePointIds ?? []) for (const el of rafCtx.constructionRef.current.elements) { if (el.kind !== 'point') continue if (draggableSet.has(el.id) || el.origin === 'free' || el.origin === 'extend') { initialPositions.set(el.id, { x: el.x, y: el.y }) } } if (initialPositions.size === 0) return // Per-point random sinusoid parameters const params = [...initialPositions.keys()].map((ptId) => { const canvas = rafCtx.canvasRef.current const cssMin = canvas ? Math.min(canvas.getBoundingClientRect().width, canvas.getBoundingClientRect().height) : 600 const ppu = rafCtx.viewportRef.current.pixelsPerUnit const amp = ((0.0025 + Math.random() * 0.00375) * cssMin) / ppu return { ptId, isFree: !draggableSet.has(ptId), ax: amp * (0.6 + Math.random() * 0.8), ay: amp * (0.6 + Math.random() * 0.8), freqX: (2 + Math.random() * 2) * ((2 * Math.PI) / 1000), freqY: (2 + Math.random() * 2) * ((2 * Math.PI) / 1000), phaseX: Math.random() * 2 * Math.PI, phaseY: Math.random() * 2 * Math.PI, } }) const DURATION_MS = 1500 let frameId = 0 let cancelled = false function applyPositions(positions: Map<string, { x: number; y: number }>) { // Update free-point actions with new positions const actions = initialActions.map((a) => { if (a.type === 'free-point' && positions.has(a.id)) { const pos = positions.get(a.id)! return { ...a, x: pos.x, y: pos.y } } return a }) rafCtx.postCompletionActionsRef.current = actions let givenElements: ConstructionElement[] if (computeFn) { givenElements = computeFn(positions) } else { givenElements = prop.givenElements.map((el) => { if (el.kind === 'point' && positions.has(el.id)) { const pos = positions.get(el.id)! return { ...el, x: pos.x, y: pos.y } } return el }) } const result = replayConstruction( givenElements, prop.steps, prop, actions, rafCtx.stepDataRef.current ) rafCtx.constructionRef.current = result.state rafCtx.candidatesRef.current = result.candidates rafCtx.ghostLayersRef.current = result.ghostLayers rafCtx.factStoreRef.current = result.factStore mergeProofFacts(rafCtx.factStoreRef.current, rafCtx.proofFactsRef.current) } function frame(now: number) { if (cancelled) return const t = now - startMs if (t >= DURATION_MS) { // Restore original positions rafCtx.postCompletionActionsRef.current = initialActions applyPositions(initialPositions) rafCtx.needsDrawRef.current = true rafCtx.wiggleCancelRef.current = null // prevent stale cancel from wiping later actions return } const envelope = Math.sin((t / DURATION_MS) * Math.PI) const positions = new Map(initialPositions) for (const p of params) { const orig = initialPositions.get(p.ptId)! positions.set(p.ptId, { x: orig.x + envelope * p.ax * Math.sin(p.freqX * t + p.phaseX), y: orig.y + envelope * p.ay * Math.sin(p.freqY * t + p.phaseY), }) } applyPositions(positions) rafCtx.needsDrawRef.current = true frameId = requestAnimationFrame(frame) } let startMs = 0 const timeoutId = setTimeout(() => { if (!cancelled) { startMs = performance.now() frameId = requestAnimationFrame(frame) } }, delayMs) const cancel = () => { cancelled = true clearTimeout(timeoutId) cancelAnimationFrame(frameId) rafCtx.postCompletionActionsRef.current = initialActions applyPositions(initialPositions) rafCtx.needsDrawRef.current = true } rafCtx.wiggleCancelRef.current = cancel return cancel }, // eslint-disable-next-line react-hooks/exhaustive-deps [] ) // Auto-wiggle on proposition completion (not in playground — user triggers manually) useEffect(() => { if (!isComplete) return if (playgroundMode) return if (!proposition.draggablePointIds || proposition.draggablePointIds.length === 0) return const cancel = startWiggle(400) // 400ms delay for completion moment to render return () => { cancel?.() rafCtx.wiggleCancelRef.current = null } // eslint-disable-next-line react-hooks/exhaustive-deps }, [isComplete, proposition.id]) return { startWiggle } } |