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fix(scene): land the opening crane before a sign can latch its placement

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LucaP
2026-10-10 20:43:49 +03:00
parent 300ebac68a
commit d9cdbbbde2
1 changed files with 5 additions and 3 deletions
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8
src/scene/world/environment.ts
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@@ -522,8 +522,9 @@ export async function createProceduralSceneGeneration(
}
if (introProgress < 1) {
// The shot belongs to a visitor who waits at the top. Once they scroll
// or navigate it lands within about 0.4 s of wall time, so the chase
// framing (and every sign placed against it) is back before arrival.
// or navigate it lands within INTRO_LANDING_SECONDS of wall time: a sign
// latches its placement after its 300 ms anticipation, so the chase
// framing must be back before then.
if (snapshot.scrollY > 40 || snapshot.activeSectionId !== 'start') introHurried = true;
// A crane that stutters is worse than none: on a device that cannot
// hold the shot smoothly, land it straight away.
@@ -532,7 +533,7 @@ export async function createProceduralSceneGeneration(
introFrames += 1;
if (introFrames > 3 && wallSeconds > 0.1) introSlowFrames += 1;
if (introSlowFrames >= 3) introHurried = true;
const step = introHurried ? Math.min(0.5, wallSeconds) / 0.4 : deltaSeconds / INTRO_SECONDS;
const step = introHurried ? Math.min(0.5, wallSeconds) / INTRO_LANDING_SECONDS : deltaSeconds / INTRO_SECONDS;
introProgress = Math.min(1, introProgress + step);
}
const crane = easeInOutCubic(
@@ -618,6 +619,7 @@ export async function createProceduralSceneGeneration(
};
}
const INTRO_LANDING_SECONDS = 0.18;
const INTRO_SECONDS = 4.2;
function easeInOutCubic(t: number): number {