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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 | import { useCallback, useRef } from 'react' import type { MutableRefObject } from 'react' import type { ConstructionState, ConstructionElement, IntersectionCandidate, GhostLayer, PropositionStep, MacroPhase, ActiveTool, SuperpositionPhase, } from '../types' import type { ProofFact } from '../engine/facts' import type { FactStore } from '../engine/factStore' import { rebuildFactStore } from '../engine/factStore' import { captureSnapshot } from '../engine/snapshots' import type { ProofSnapshot } from '../engine/snapshots' import { validateStep } from '../propositions/validation' import { findNewIntersections } from '../engine/intersections' import { MACRO_REGISTRY } from '../engine/macros' import type { ToolPhaseManager } from '../interaction/useToolPhaseManager' const WRONG_MOVE_PHRASES = [ "Not quite. Let's try that step again.", "Hmm, that's not right. Try again.", "That's not it. Here's the step one more time:", 'Oops! Let me remind you:', ] export interface TutorialController { /** * Validate an element against the expected action at the current step. * Returns 'advanced' if the step was correct and advanced, 'corrected' if wrong. */ checkStep: ( element: ConstructionElement, candidate?: IntersectionCandidate ) => 'advanced' | 'corrected' /** * Advance past an observation step (no canvas interaction needed). */ advanceObservation: () => void /** * Trigger a correction: revert state to the snapshot at the given step, * narrate wrong-move feedback, and lock interactions during narration. */ triggerCorrection: (step: number) => void /** * Rewind to a previous step (restoring all state from the snapshot stack). */ handleRewindToStep: (targetStep: number) => void } export interface UseTutorialControllerOptions { steps: PropositionStep[] extendSegments: boolean // Refs owned by the composition root but read/written by the controller currentStepRef: MutableRefObject<number> snapshotStackRef: MutableRefObject<ProofSnapshot[]> resolvedStepOverridesRef: MutableRefObject<Map<number, Partial<PropositionStep>>> resolvedTutorialRef: MutableRefObject<Map<number, import('../types').TutorialSubStep[]>> stepDataRef: MutableRefObject<Map<number, Record<string, unknown>>> // Mutable refs the controller reads/writes constructionRef: MutableRefObject<ConstructionState> candidatesRef: MutableRefObject<IntersectionCandidate[]> proofFactsRef: MutableRefObject<ProofFact[]> ghostLayersRef: MutableRefObject<GhostLayer[]> factStoreRef: MutableRefObject<FactStore> isCompleteRef: MutableRefObject<boolean> // Animation/tool refs the controller needs to clear on correction/rewind straightedgeDrawAnimRef: MutableRefObject<unknown> macroAnimationRef: MutableRefObject<unknown> macroRevealRef: MutableRefObject<unknown> superpositionFlashRef: MutableRefObject<unknown> citationFlashesRef: MutableRefObject<unknown[]> ghostOpacitiesRef: MutableRefObject<Map<string, number>> postCompletionActionsRef: MutableRefObject<unknown[]> correctionActiveRef: MutableRefObject<boolean> // Superposition interaction superpositionPhaseRef?: MutableRefObject<SuperpositionPhase> superpositionCascadeTimersRef?: MutableRefObject<ReturnType<typeof setTimeout>[]> // Tool phase manager toolPhases: ToolPhaseManager // Audio audioEnabledRef: MutableRefObject<boolean> currentSpeechRef: MutableRefObject<string> speakStepCorrectionRef: MutableRefObject<(opts: { say: { en: string } }) => Promise<void>> // Proposition (for resolveStep, resolveTutorialStep) proposition: import('../types').PropositionDef // Tutorial advancement sub-step refs (cleared on rewind) tutorialSubStepRef: MutableRefObject<number> prevCompassTagRef: MutableRefObject<string> prevStraightedgeTagRef: MutableRefObject<string> // State setters setCurrentStep: (step: number) => void setCompletedSteps: React.Dispatch<React.SetStateAction<boolean[]>> setIsComplete: (v: boolean) => void setProofFacts: (v: ProofFact[]) => void setTutorialSubStep: (v: number) => void requestDraw: () => void } export function useTutorialController(opts: UseTutorialControllerOptions): TutorialController { const { steps, extendSegments, currentStepRef, snapshotStackRef, resolvedStepOverridesRef, resolvedTutorialRef, stepDataRef, constructionRef, candidatesRef, proofFactsRef, ghostLayersRef, factStoreRef, isCompleteRef, straightedgeDrawAnimRef, macroAnimationRef, macroRevealRef, superpositionFlashRef, citationFlashesRef, ghostOpacitiesRef, postCompletionActionsRef, correctionActiveRef, superpositionPhaseRef, superpositionCascadeTimersRef, toolPhases, audioEnabledRef, currentSpeechRef, speakStepCorrectionRef, proposition, tutorialSubStepRef, prevCompassTagRef, prevStraightedgeTagRef, setCurrentStep, setCompletedSteps, setIsComplete, setProofFacts, setTutorialSubStep, requestDraw, } = opts const wrongMoveCounterRef = useRef(0) // Keep a ref to steps to avoid stale closures const stepsRef = useRef(steps) stepsRef.current = steps const triggerCorrection = useCallback( (step: number) => { const snapshot = snapshotStackRef.current[step] if (!snapshot) return // Revert construction state to what it was before the wrong action constructionRef.current = snapshot.construction candidatesRef.current = snapshot.candidates proofFactsRef.current = snapshot.proofFacts setProofFacts(snapshot.proofFacts) ghostLayersRef.current = snapshot.ghostLayers factStoreRef.current = rebuildFactStore(snapshot.proofFacts) // Clear any ongoing draw animations straightedgeDrawAnimRef.current = null macroAnimationRef.current = null macroRevealRef.current = null // Reset superposition interaction if (superpositionPhaseRef) superpositionPhaseRef.current = { tag: 'idle' } if (superpositionCascadeTimersRef) { for (const t of superpositionCascadeTimersRef.current) clearTimeout(t) superpositionCascadeTimersRef.current = [] } // Reset tool phases so no in-flight gesture survives the revert toolPhases.resetAll() // Lock all tool interactions for the duration of the correction narration correctionActiveRef.current = true const phrase = WRONG_MOVE_PHRASES[wrongMoveCounterRef.current++ % WRONG_MOVE_PHRASES.length] const stepOverrides = resolvedStepOverridesRef.current.get(step) const instruction = currentSpeechRef.current || stepOverrides?.instruction || stepsRef.current[step].instruction const unlock = () => { correctionActiveRef.current = false // Re-initialize the macro selecting phase if the step expects a macro. // The step-sync useEffect won't re-fire because currentStep didn't change. const stepDef = stepsRef.current[step] if (stepDef?.tool === 'macro' && stepDef.expected.type === 'macro') { const macroDef = MACRO_REGISTRY[stepDef.expected.propId] if (macroDef) { toolPhases.enterMacroSelecting(stepDef.expected.propId, macroDef.inputs) } } } if (audioEnabledRef.current) { speakStepCorrectionRef .current({ say: { en: phrase } }) .then(() => speakStepCorrectionRef.current({ say: { en: instruction } })) .finally(unlock) } else { setTimeout(unlock, 1200) } requestDraw() }, [ constructionRef, candidatesRef, proofFactsRef, ghostLayersRef, factStoreRef, straightedgeDrawAnimRef, macroAnimationRef, macroRevealRef, correctionActiveRef, toolPhases, audioEnabledRef, currentSpeechRef, speakStepCorrectionRef, setProofFacts, requestDraw, ] ) const checkStep = useCallback( (element: ConstructionElement, candidate?: IntersectionCandidate): 'advanced' | 'corrected' => { const step = currentStepRef.current if (step >= stepsRef.current.length) return 'advanced' const stepDef = stepsRef.current[step] // Use resolved override if available (for adaptive steps like Prop 5) const overrides = resolvedStepOverridesRef.current.get(step) const effectiveExpected = overrides?.expected ?? stepDef.expected const valid = validateStep(effectiveExpected, constructionRef.current, element, candidate) console.log( '[checkStep] step=%d valid=%s expected=%o element=%o', step, valid, effectiveExpected, { kind: element.kind, id: element.id } ) if (valid) { // Capture snapshot before advancing — state after this step completes snapshotStackRef.current = [ ...snapshotStackRef.current, captureSnapshot( constructionRef.current, candidatesRef.current, proofFactsRef.current, ghostLayersRef.current ), ] setCompletedSteps((prev) => { const next = [...prev] next[step] = true return next }) const nextStep = step + 1 currentStepRef.current = nextStep if (nextStep >= stepsRef.current.length) { setIsComplete(true) // Recompute candidates with segment extension for post-completion play if (!extendSegments) { let updatedCandidates = [...candidatesRef.current] for (const el of constructionRef.current.elements) { if (el.kind === 'point') continue const additional = findNewIntersections( constructionRef.current, el, updatedCandidates, true ) updatedCandidates = [...updatedCandidates, ...additional] } candidatesRef.current = updatedCandidates } } setCurrentStep(nextStep) return 'advanced' } else { triggerCorrection(step) return 'corrected' } }, [ constructionRef, candidatesRef, proofFactsRef, ghostLayersRef, extendSegments, setCompletedSteps, setCurrentStep, setIsComplete, triggerCorrection, ] ) const advanceObservation = useCallback(() => { const step = currentStepRef.current if (step >= stepsRef.current.length) return const stepDef = stepsRef.current[step] if (stepDef.expected.type !== 'observation') return // Capture snapshot before advancing snapshotStackRef.current = [ ...snapshotStackRef.current, captureSnapshot( constructionRef.current, candidatesRef.current, proofFactsRef.current, ghostLayersRef.current ), ] setCompletedSteps((prev) => { const next = [...prev] next[step] = true return next }) const nextStep = step + 1 currentStepRef.current = nextStep if (nextStep >= stepsRef.current.length) { setIsComplete(true) } setCurrentStep(nextStep) }, [ constructionRef, candidatesRef, proofFactsRef, ghostLayersRef, setCompletedSteps, setCurrentStep, setIsComplete, ]) const handleRewindToStep = useCallback( (targetStep: number) => { const snapshot = snapshotStackRef.current[targetStep] if (!snapshot) return // 1. Reset all tool phases to idle, clear animations toolPhases.resetAll() macroAnimationRef.current = null macroRevealRef.current = null superpositionFlashRef.current = null citationFlashesRef.current = [] postCompletionActionsRef.current = [] // Reset superposition interaction if (superpositionPhaseRef) superpositionPhaseRef.current = { tag: 'idle' } if (superpositionCascadeTimersRef) { for (const t of superpositionCascadeTimersRef.current) clearTimeout(t) superpositionCascadeTimersRef.current = [] } // 2. Restore construction, candidates, proofFacts, ghostLayers from snapshot constructionRef.current = snapshot.construction candidatesRef.current = snapshot.candidates proofFactsRef.current = snapshot.proofFacts setProofFacts(snapshot.proofFacts) ghostLayersRef.current = snapshot.ghostLayers ghostOpacitiesRef.current = new Map() // 3. Rebuild factStore via rebuildFactStore factStoreRef.current = rebuildFactStore(snapshot.proofFacts) // 4. Truncate snapshot stack to [0..targetStep] snapshotStackRef.current = snapshotStackRef.current.slice(0, targetStep + 1) // 5. Set currentStep, reset completedSteps from targetStep onward currentStepRef.current = targetStep setCurrentStep(targetStep) setCompletedSteps((prev) => { const next = [...prev] for (let i = targetStep; i < next.length; i++) { next[i] = false } return next }) setIsComplete(false) // 6. Reset tutorial sub-step tutorialSubStepRef.current = 0 setTutorialSubStep(0) prevCompassTagRef.current = 'idle' prevStraightedgeTagRef.current = 'idle' // 7. Clear resolved step/tutorial overrides for steps at and after the target for (const key of resolvedStepOverridesRef.current.keys()) { if (key >= targetStep) resolvedStepOverridesRef.current.delete(key) } for (const key of resolvedTutorialRef.current.keys()) { if (key >= targetStep) resolvedTutorialRef.current.delete(key) } // Clear step data for steps at and after the target for (const key of stepDataRef.current.keys()) { if (key >= targetStep) stepDataRef.current.delete(key) } // 8. Sync tool/expectedAction refs for the new current step if (targetStep < stepsRef.current.length) { // Re-resolve step if proposition has resolveStep if (proposition.resolveStep && targetStep >= 2) { const override = proposition.resolveStep( targetStep, constructionRef.current, stepDataRef.current ) if (override) { resolvedStepOverridesRef.current.set(targetStep, override as Partial<PropositionStep>) } } } requestDraw() }, [ constructionRef, candidatesRef, proofFactsRef, ghostLayersRef, factStoreRef, ghostOpacitiesRef, macroAnimationRef, macroRevealRef, superpositionFlashRef, citationFlashesRef, postCompletionActionsRef, toolPhases, proposition, tutorialSubStepRef, prevCompassTagRef, prevStraightedgeTagRef, setCurrentStep, setCompletedSteps, setIsComplete, setProofFacts, setTutorialSubStep, requestDraw, ] ) return { checkStep, advanceObservation, triggerCorrection, handleRewindToStep, } } |