A City Block from 1945 to 2055

Using a single HTML file and Three.js, create a time-lapse scene of a city block: the same block changes from 1945 all the way to 2055. As time progresses, the height and facades of buildings, cars on the road, ground-floor shops, crowds on the street, nighttime lighting, and environmental sounds all change with the era. Provide a draggable timeline control. Avoid: only changing colors without changing buildings, discontinuous changes between eras, street layout randomly changing over time, splitting into multiple files.

Translated from Chinese by AI.

用單一 HTML 檔與 Three.js 做一個城市街區的時間變化場景:同一個街區從 1945 年一路變化到 2055 年。隨著時間推進,建築的高度與立面、路上的汽車、一樓的店家、街上的人群、夜間照明與環境音效都跟著年代改變。提供可以拖曳的時間軸控制。避免:只換顏色不換建築、各年代之間的變化不連續、街道格局隨時間亂變、拆成多個檔案。