80 lines
2.9 KiB
TypeScript
80 lines
2.9 KiB
TypeScript
import { describe, expect, it } from 'vitest';
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import { DAWN_STEPS, dawnStep, END_OF_SHIFT_SUBLINE } from '@/journey/dawn';
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import {
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blendDaybreak,
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CHAPTER_PALETTES,
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createMutableChapterPalette,
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DAYBREAK_PALETTE,
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engineOffStarScale,
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} from '@/scene/world/palette';
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describe('dawn step mapping (html[data-dawn])', () => {
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it('steps night -> first-light -> sunrise -> day at 0.3 / 0.6 / 0.95', () => {
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expect(DAWN_STEPS).toEqual({ 'first-light': 0.3, sunrise: 0.6, day: 0.95 });
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const cases: Array<[number, string]> = [
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[0, 'night'],
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[0.29, 'night'],
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[0.3, 'first-light'],
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[0.59, 'first-light'],
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[0.6, 'sunrise'],
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[0.949, 'sunrise'],
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[0.95, 'day'],
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[1, 'day'],
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[-1, 'night'],
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[Number.NaN, 'night'],
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];
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for (const [dawn, step] of cases) expect(dawnStep(dawn)).toBe(step);
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});
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it('reads the end-of-shift sub-line', () => {
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expect(END_OF_SHIFT_SUBLINE).toBe('END OF SHIFT · 05:48');
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});
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});
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describe('daybreak palette', () => {
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it('is not a journey chapter', () => {
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expect(Object.keys(CHAPTER_PALETTES)).not.toContain('daybreak');
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});
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it('leaves the destination untouched at 0 and becomes daybreak at 1', () => {
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const untouched = createMutableChapterPalette('destination');
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blendDaybreak(untouched, 0);
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expect(untouched.sky.getHex()).toBe(CHAPTER_PALETTES.destination.sky);
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expect(untouched.starVisibility).toBe(CHAPTER_PALETTES.destination.starVisibility);
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const full = createMutableChapterPalette('destination');
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blendDaybreak(full, 1);
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for (const key of ['sky', 'fog', 'terrainLow', 'terrainHigh', 'sun', 'haze'] as const) {
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expect(full[key].getHex()).toBe(DAYBREAK_PALETTE[key]);
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}
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expect(full.warmth).toBe(1.25);
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expect(full.terrainEnergy).toBe(0.4);
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expect(full.starVisibility).toBe(0);
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expect(full.streakEnergy).toBe(0);
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});
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it('blends partway and clamps out-of-range amounts', () => {
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const half = createMutableChapterPalette('destination');
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blendDaybreak(half, 0.5);
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expect(half.warmth).toBeCloseTo((1 + 1.25) / 2);
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expect(half.starVisibility).toBeCloseTo(0.08);
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const over = createMutableChapterPalette('destination');
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blendDaybreak(over, 3);
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expect(over.sky.getHex()).toBe(DAYBREAK_PALETTE.sky);
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const nan = createMutableChapterPalette('destination');
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blendDaybreak(nan, Number.NaN);
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expect(nan.sky.getHex()).toBe(CHAPTER_PALETTES.destination.sky);
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});
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it('boosts the stars as the engine cuts, then drains them as the dawn rises', () => {
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expect(engineOffStarScale(0, 0)).toBe(1);
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expect(engineOffStarScale(1, 0)).toBeCloseTo(1.8);
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expect(engineOffStarScale(1, 0.5)).toBeCloseTo(1.4);
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expect(engineOffStarScale(1, 1)).toBe(1);
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// Combined with the daybreak blend, the stars are gone by full dawn.
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const palette = createMutableChapterPalette('destination');
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blendDaybreak(palette, 1);
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expect(palette.starVisibility * engineOffStarScale(1, 1)).toBe(0);
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});
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});
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