Files
infiplot-web/components/PlayCanvas.tsx
T

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20 KiB
TypeScript

"use client";
import { useCallback, useEffect, useRef, useState, type ReactNode } from "react";
import type { Beat, BeatChoice } from "@infiplot/types";
export type Phase =
| "loading-first" // first scene not yet rendered
| "ready" // current beat is interactive
| "vision-thinking" // background click → waiting on vision verdict
| "inserting-beat" // vision-driven beat being generated
| "transitioning"; // changing scenes (cache miss or speculative wait)
const SHADOW =
"0 1px 0 rgba(45,24,16,0.05), 0 36px 64px -28px rgba(45,24,16,0.25), 0 8px 18px -6px rgba(45,24,16,0.10)";
const DEFAULT_CHAR_MS = 28;
const MIN_CHAR_MS = 30;
// Voice playback speed multiplier. >1 speeds up the (somewhat slow) MiMo voice
// while preserving pitch. Typewriter pacing is divided by the same factor.
const SPEECH_RATE = 1.2;
// If audio metadata never arrives within this window, give up waiting and
// let the typewriter run at default speed.
const AUDIO_WAIT_TIMEOUT_MS = 2500;
// ── Typewriter hook ────────────────────────────────────────────────────
// Returns the progressively-revealed text, a `done` flag, and a `skip()` that
// instantly completes the current text. Reset is keyed by `resetKey` (the beat
// id) rather than the text, so a new beat whose line happens to match the
// previous one still replays from scratch.
//
// When `targetDurationMs` is provided we space characters to span that audio
// duration, keeping text and voice in lockstep. While `waitForAudio` is true
// and we don't yet know a duration, the typewriter holds (so text doesn't
// race ahead of an audio that's still loading).
function useTypewriter(
text: string,
resetKey: string,
opts: { targetDurationMs?: number; waitForAudio: boolean; defaultCharMs?: number } = {
waitForAudio: false,
},
): { shown: string; done: boolean; skip: () => void } {
const { targetDurationMs, waitForAudio, defaultCharMs } = opts;
const [displayed, setDisplayed] = useState("");
const [prevKey, setPrevKey] = useState(resetKey);
const timer = useRef<ReturnType<typeof setInterval> | null>(null);
// Sticky once the player has skipped this beat: prevents a late-arriving
// audio metadata event from re-triggering the effect and replaying the text.
const skippedRef = useRef(false);
// Render-phase reset (React "adjust state on prop change" pattern): when the
// beat changes, drop the old progress before this render commits.
if (resetKey !== prevKey) {
setPrevKey(resetKey);
setDisplayed("");
skippedRef.current = false;
}
useEffect(() => {
if (!text) return;
// `=== undefined` (not `!targetDurationMs`): 0 means "audio failed or
// timed out — run at default speed". The original truthy check stalled
// the typewriter forever on those fallback paths.
if (waitForAudio && targetDurationMs === undefined) return;
// If the player skipped, settle on the full text and don't restart even
// when audio metadata arrives late and re-triggers this effect.
if (skippedRef.current) {
setDisplayed(text);
return;
}
const speed =
targetDurationMs && text.length > 0
? Math.max(MIN_CHAR_MS, targetDurationMs / text.length)
: (defaultCharMs ?? DEFAULT_CHAR_MS);
let i = 0;
timer.current = setInterval(() => {
i += 1;
setDisplayed(text.slice(0, i));
if (i >= text.length && timer.current) {
clearInterval(timer.current);
timer.current = null;
}
}, speed);
return () => {
if (timer.current) clearInterval(timer.current);
timer.current = null;
};
}, [resetKey, text, targetDurationMs, waitForAudio, defaultCharMs]);
const skip = useCallback(() => {
if (timer.current) {
clearInterval(timer.current);
timer.current = null;
}
skippedRef.current = true;
setDisplayed(text);
}, [text]);
// During the throwaway render where the beat just changed, `displayed` still
// holds the previous beat's text — coerce it to empty so nothing stale shows.
const shown = resetKey === prevKey ? displayed : "";
const done = text.length === 0 || shown.length >= text.length;
return { shown, done, skip };
}
// ── Choice button ──────────────────────────────────────────────────────
function ChoiceButton({
index,
label,
disabled,
onClick,
}: {
index: number;
label: string;
disabled: boolean;
onClick: () => void;
}) {
return (
<button
type="button"
disabled={disabled}
onClick={onClick}
className="group relative flex-1 min-w-0 px-4 py-3 text-left transition-all duration-200
disabled:opacity-50 disabled:cursor-wait"
style={{
background: "rgba(20, 14, 8, 0.68)",
border: "1.5px solid rgba(180, 140, 80, 0.65)",
borderRadius: "6px",
backdropFilter: "blur(8px)",
WebkitBackdropFilter: "blur(8px)",
boxShadow: "0 2px 12px rgba(0,0,0,0.4), inset 0 1px 0 rgba(200,165,90,0.12)",
}}
>
<span
className="absolute inset-0 rounded-[5px] opacity-0 group-hover:opacity-100 transition-opacity duration-200 pointer-events-none"
style={{
background: "rgba(180,140,60,0.10)",
border: "1.5px solid rgba(200,165,90,0.85)",
}}
/>
<span className="relative flex items-baseline gap-2">
<span
className="shrink-0 font-serif text-[11px] num"
style={{ color: "rgba(195,155,75,0.9)" }}
>
{index + 1}.
</span>
<span
className="font-serif text-[13px] md:text-[14px] leading-snug"
style={{ color: "rgba(245,235,210,0.95)" }}
>
{label}
</span>
</span>
</button>
);
}
// ── Main component ─────────────────────────────────────────────────────
export function PlayCanvas({
imageUrl,
audioBase64,
audioMime,
muted,
phase,
beat,
pendingClick,
onBackgroundClick,
onAdvance,
onSelectChoice,
fullViewport = false,
aboveCanvas,
aboveCanvasLeft,
teaserText,
}: {
imageUrl: string | null;
audioBase64: string | null;
audioMime: string | null;
muted: boolean;
phase: Phase;
beat: Beat | null;
pendingClick: { x: number; y: number } | null;
onBackgroundClick: (click: { x: number; y: number }) => void;
onAdvance: () => void;
onSelectChoice: (choice: BeatChoice) => void;
fullViewport?: boolean;
// 渲染在图片正上方、右对齐的 slot(画面外、紧贴右上角)。
aboveCanvas?: ReactNode;
// 渲染在图片正上方、左对齐的 slot(画面外、紧贴左上角),与 aboveCanvas 水平镜像。
aboveCanvasLeft?: ReactNode;
teaserText?: string | null;
}) {
const imgRef = useRef<HTMLImageElement>(null);
const audioRef = useRef<HTMLAudioElement>(null);
const [audioDurationMs, setAudioDurationMs] = useState<number | undefined>(
undefined,
);
const isChoiceBeat = beat?.next.type === "choice";
const choices: BeatChoice[] = isChoiceBeat
? (beat!.next as { type: "choice"; choices: BeatChoice[] }).choices
: [];
const displayBody = beat?.speaker ? beat.line ?? "" : beat?.narration ?? "";
const { shown: typedBody, done: typingDone, skip: skipTypewriter } =
useTypewriter(displayBody, beat?.id ?? "", {
targetDurationMs: audioDurationMs,
waitForAudio: Boolean(audioBase64),
});
const { shown: typedTeaser, done: teaserDone } = useTypewriter(teaserText ?? "", "teaser_reset", {
waitForAudio: false,
defaultCharMs: 65,
});
const [pulseActive, setPulseActive] = useState(false);
useEffect(() => {
if (teaserDone) {
const timer = setTimeout(() => {
setPulseActive(true);
}, 1000);
return () => clearTimeout(timer);
} else {
setPulseActive(false);
}
}, [teaserDone]);
// ── Audio source change ──────────────────────────────────────────────
// Reset duration when audio source changes; if loading takes too long,
// unblock the typewriter via timeout so text doesn't stall.
useEffect(() => {
setAudioDurationMs(undefined);
if (!audioBase64) return;
const timer = setTimeout(() => {
setAudioDurationMs((prev) => prev ?? 0);
}, AUDIO_WAIT_TIMEOUT_MS);
return () => clearTimeout(timer);
}, [audioBase64]);
// ── Mute toggle ───────────────────────────────────────────────────────
useEffect(() => {
const el = audioRef.current;
if (!el) return;
el.muted = muted;
el.playbackRate = SPEECH_RATE;
if (!muted && audioBase64 && el.paused) {
el.play().catch(() => {
// autoplay blocked — silent until next interaction
});
}
}, [muted, audioBase64]);
function handleAudioMetadata() {
const el = audioRef.current;
if (!el) return;
el.playbackRate = SPEECH_RATE;
// Effective playback time is shorter once sped up — keep the typewriter in sync.
const ms = Number.isFinite(el.duration)
? (el.duration * 1000) / SPEECH_RATE
: 0;
setAudioDurationMs(ms > 0 ? ms : 0);
if (!muted) {
el.play().catch(() => {
// autoplay blocked
});
}
}
function handleAudioError() {
// Treat as zero duration so the typewriter runs at default speed.
setAudioDurationMs(0);
}
function handleImageClick(e: React.MouseEvent<HTMLImageElement>) {
if (phase !== "ready" || !imgRef.current || !beat) return;
const rect = imgRef.current.getBoundingClientRect();
const x = (e.clientX - rect.left) / rect.width;
const y = (e.clientY - rect.top) / rect.height;
// If the typewriter is still printing, a click completes it instantly
// (standard VN affordance) — the page never sees this click.
if (!typingDone) {
skipTypewriter();
return;
}
// For continue-type beats, image click advances; for choice beats,
// image click goes through vision (treat as freeform action).
if (beat.next.type === "continue") {
onAdvance();
return;
}
onBackgroundClick({
x: Math.max(0, Math.min(1, x)),
y: Math.max(0, Math.min(1, y)),
});
}
// Card swallows its own clicks so they never fall through to the image's
// vision (识图) trigger: while typing a click completes the text, a continue
// beat advances, and a choice beat stays inert (player must pick an option).
function handleCardClick() {
if (phase !== "ready" || !beat) return;
if (!typingDone) {
skipTypewriter();
return;
}
if (beat.next.type === "continue") onAdvance();
}
const interactive = phase === "ready" && !!imageUrl;
const dimmed = phase === "transitioning";
const sizeStyle = fullViewport
? { maxWidth: "100vw", maxHeight: "100dvh" }
: { maxWidth: "96vw", maxHeight: "calc(100dvh - 200px)" };
const placeholderWidth = fullViewport
? "min(100vw, calc(100dvh * 16 / 9))"
: "min(96vw, calc((100dvh - 200px) * 16 / 9))";
return (
<div
className={`flex flex-col items-center ${fullViewport ? "w-full h-full justify-center" : "w-full"}`}
>
{/* Hidden audio element — voice playback for the current beat */}
{audioBase64 && (
<audio
key={audioBase64.slice(-48)}
ref={audioRef}
src={`data:${audioMime ?? "audio/wav"};base64,${audioBase64}`}
preload="auto"
onLoadedMetadata={handleAudioMetadata}
onError={handleAudioError}
className="hidden"
/>
)}
{imageUrl ? (
<div
className="relative inline-block"
style={{ boxShadow: fullViewport ? "none" : SHADOW }}
>
{/* Background image — Runware CDN URL or data URI (mock mode).
The width/height attributes are NOT rendered dimensions (w-auto
h-auto + the maxWidth/maxHeight in sizeStyle still drive the
final layout); they give the browser an intrinsic aspect ratio
so that, while the bytes are still arriving from the CDN, the
<img> reserves a 1792:1024 box instead of collapsing to a
one-pixel sliver — fixes the "等很久 → 一根线 → 突然出图" jank. */}
<img
key={imageUrl.slice(-48)}
ref={imgRef}
src={imageUrl}
width={1792}
height={1024}
alt="Generated scene"
onClick={handleImageClick}
draggable={false}
className={`block w-auto h-auto select-none animate-fade-in transition-opacity duration-700 ease-out ${
interactive ? "cursor-pointer" : "cursor-wait"
} ${dimmed ? "opacity-40" : "opacity-100"}`}
style={sizeStyle}
/>
{!fullViewport && (
<div className="absolute inset-x-0 top-0 h-10 bg-gradient-to-b from-clay-900/12 to-transparent pointer-events-none" />
)}
{/* 画面正上方右对齐的 slot —— 用 bottom-full + right-0 让它整体浮在图片之外、紧贴右上角 */}
{!fullViewport && aboveCanvas && (
<div className="absolute bottom-full right-0 mb-2 flex items-center gap-2">
{aboveCanvas}
</div>
)}
{!fullViewport && aboveCanvasLeft && (
<div className="absolute bottom-full left-0 mb-2 flex items-center gap-2">
{aboveCanvasLeft}
</div>
)}
{beat && (
<div className="absolute inset-0 flex flex-col justify-end pointer-events-none select-none">
{choices.length > 0 && (
<div className="pointer-events-auto px-[3%] pb-[1.5%] flex gap-[1.5%] items-stretch">
{choices.map((choice, i) => (
<ChoiceButton
key={choice.id}
index={i}
label={choice.label}
disabled={phase !== "ready"}
onClick={() => onSelectChoice(choice)}
/>
))}
</div>
)}
{(beat.narration || beat.line) && (
<div
className="pointer-events-auto mx-[2%] mb-[2%] px-[3%] py-[2.2%] relative"
onClick={handleCardClick}
style={{
background: "rgba(14, 10, 6, 0.72)",
border: "1.5px solid rgba(175, 138, 72, 0.60)",
borderRadius: "6px",
backdropFilter: "blur(10px)",
WebkitBackdropFilter: "blur(10px)",
boxShadow:
"0 4px 24px rgba(0,0,0,0.55), inset 0 1px 0 rgba(200,165,90,0.10)",
}}
>
<span
className="absolute top-[6px] left-[8px] text-[10px] opacity-40 pointer-events-none"
style={{ color: "rgba(195,155,75,1)" }}
aria-hidden
>
</span>
<span
className="absolute top-[6px] right-[8px] text-[10px] opacity-40 pointer-events-none"
style={{ color: "rgba(195,155,75,1)" }}
aria-hidden
>
</span>
{beat.speaker && (
<p
className="font-serif text-[11px] md:text-[12px] smallcaps mb-[0.6em]"
style={{ color: "rgba(205,165,90,0.92)" }}
>
{beat.speaker}
</p>
)}
<p
className="font-serif leading-[1.85] text-[13px] md:text-[15px]"
style={{ color: "rgba(245,235,210,0.95)" }}
>
{typedBody}
{beat.speaker && beat.narration && (
<span
className={`block mt-[0.5em] italic text-[12px] md:text-[13px] transition-opacity duration-300 ${
typingDone ? "opacity-100" : "opacity-0"
}`}
style={{ color: "rgba(200,185,155,0.78)" }}
aria-hidden={!typingDone}
>
{beat.narration}
</span>
)}
</p>
{typingDone && beat.next.type === "continue" && (
<span
className="absolute bottom-[6px] right-[10px] text-[10px] animate-slow-pulse"
style={{ color: "rgba(195,155,75,0.7)" }}
aria-hidden
>
</span>
)}
</div>
)}
</div>
)}
{(phase === "transitioning" || phase === "inserting-beat") && (
<div className="absolute inset-0 flex items-center justify-center pointer-events-none">
<p className="text-[10px] smallcaps text-cream-50/70 animate-slow-pulse">
{phase === "transitioning"
? "AI · 正 · 在 · 描 · 画 · 下 · 一 · 幕"
: "AI · 正 · 在 · 想 · 你 · 看 · 到 · 了 · 什 · 么"}
</p>
</div>
)}
{pendingClick && (
<>
<div
className="absolute rounded-full border border-ember-500 pointer-events-none"
style={{
left: `${pendingClick.x * 100}%`,
top: `${pendingClick.y * 100}%`,
transform: "translate(-50%, -50%)",
width: 30,
height: 30,
animation:
"infiplot-ripple 1.6s cubic-bezier(0.16,1,0.3,1) infinite",
}}
/>
<div
className="absolute rounded-full pointer-events-none"
style={{
left: `${pendingClick.x * 100}%`,
top: `${pendingClick.y * 100}%`,
transform: "translate(-50%, -50%)",
width: 11,
height: 11,
background: "#D97A2E",
boxShadow:
"0 0 0 3px rgba(251,247,240,0.95), 0 0 14px rgba(217,122,46,0.55)",
}}
/>
</>
)}
</div>
) : (
<div
className="relative aspect-video bg-cream-200 flex flex-col items-center justify-center p-6 md:p-12 text-center"
style={{
width: placeholderWidth,
boxShadow: fullViewport ? "none" : SHADOW,
}}
>
{teaserText ? (
<div className="w-full max-w-[85%] md:max-w-[75%] flex flex-col items-center justify-center gap-3.5 md:gap-5 animate-fade-in">
<span className="text-[9px] smallcaps text-clay-400 tracking-[0.2em] font-sans">
· · ·
</span>
<p className={`font-serif leading-[2] text-clay-700 text-[13px] md:text-[15px] italic whitespace-pre-wrap text-left w-full ${pulseActive ? "animate-slow-pulse" : ""}`}>
{typedTeaser}
</p>
</div>
) : (
<div className="flex flex-col items-center justify-center gap-4">
<div className="w-1.5 h-1.5 bg-clay-500 rounded-full animate-slow-pulse" />
<p className="text-[9px] smallcaps text-clay-500 animate-slow-pulse">
· ·
</p>
</div>
)}
{/* 加载占位也挂同一对 slot,让右上 / 左上的操作按钮在第一帧就出现 */}
{!fullViewport && aboveCanvas && (
<div className="absolute bottom-full right-0 mb-2 flex items-center gap-2">
{aboveCanvas}
</div>
)}
{!fullViewport && aboveCanvasLeft && (
<div className="absolute bottom-full left-0 mb-2 flex items-center gap-2">
{aboveCanvasLeft}
</div>
)}
</div>
)}
</div>
);
}