Nodes/ComfyUI LC123 Nodes/πŸ—’οΈLC Scene Builder
ComfyUI Node

πŸ—’οΈLC Scene Builder

Stop typing 'cafe interior, golden hour' from memory

By lonecatone23Β·Created 2 months agoΒ·Updated 3 days agoΒ· 18
πŸ—’οΈLC Scene Builder
    • prompt
    β—„scene_presetLuxury penthouseβ–Ί
    β—„descriptionβ–Ί
    β—„time_of_dayAfternoonβ–Ί
    β—„weatherClearβ–Ί
    β—„environment_detailsβ–Ί

    Every photographer-turned-prompt-writer knows the grind: describing an environment well takes a paragraph, and doing it from memory means it comes out thin. LC Scene Builder is the environment half of the LC123 prompt-builder family, and it exists so "where does this happen" is a dropdown instead of a wall of text you have to get right.

    Pick a scene preset - 25 of them, from "Luxury penthouse" and "Modern kitchen" to "Rain-slick street" and "Alley with graffiti" - and the node fills in a detailed environment description for you. Then add time of day, weather, and any props or atmosphere the preset doesn't cover. What comes out the prompt socket is a ready-to-use STRING that feeds the LC Prompt Assembler (or any text encoder).

    How it works

    The presets come from editable JSON files in assets/prompt_builder/, so the list isn't hardcoded - you can tweak it. The mechanism has one clever bit worth knowing: it strips baked-in time and weather phrases from a preset when you've supplied your own in the widgets. Pick "Golden hour" in the dropdown and a preset that says "sunset-lit terrace" won't fight you with doubled phrasing. It then appends its own time/weather detail lines, joins everything with commas, and tacks on machine-readable scene-object markers (|||LC_OBJ:...|||) that only the assembler cares about - the caption text itself stays clean.

    The inputs

    • scene_preset - the environment preset (default "Luxury penthouse"). This fills the scene description.
    • description - freeform text to override or extend the preset; empty = preset only.
    • time_of_day - none/Dawn/Morning/Midday/Afternoon/Golden hour/Dusk/Evening/Night. "none" leaves time out.
    • weather - none/Clear/Partly cloudy/Overcast/Foggy/Rainy/Snowy/Windy.
    • environment_details - props, architecture, atmosphere not covered by the preset.

    Output is one prompt STRING.

    Where it fits

    The README's stack is: Subjects + Scene + Camera + Lighting + Style + Palette β†’ LC Prompt Assembler β†’ prompt β†’ CLIP. So Scene Builder is one module in a modular build - pair it with LC Subject for the character, LCStyleSelector for the look, and the assembler stitches it together. You can also just wire it straight into a CLIP Text Encode if you want a fast, detailed environment prompt without the rest of the machinery.

    One honest note: on tag-based models (Illustrious, NoobAI, Pony lineage) full descriptive sentences can dilute adherence versus proper booru tags; the preset's prose works best on LLM-encoded models that read natural language (Flux/Klein/Anima families) - which is the audience this pack is clearly aimed at.

    Install

    Part of LC123 - ComfyUI Manager (search "LC123") or:

    cd ComfyUI/custom_nodes
git clone https://github.com/lonecatone23/ComfyUI_LC123_nodes

    Restart. No extra pip dependencies; MIT licensed. Cloud-hosted ComfyUI needs LC123 requested or run locally.

    CategoryLC123/prompt

    Inputs (5)

    NameTypeDefaultDescription
    scene_presetCOMBOLuxury penthouseDetailed environment preset (fills the scene description).
    descriptionSTRINGOverride or extend the preset. Empty = use preset text only.
    time_of_dayCOMBOAfternoonWhen it is. none = leave time out.
    weatherCOMBOClearSky / weather. none = leave weather out.
    environment_detailsSTRINGProps, architecture, atmosphere not covered by the preset.

    Outputs (1)

    NameTypeDescription
    promptSTRINGβ€”