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Keep

A bright low-poly medieval castle keep for the Royal Castle Court kit: a crenellated stone tower on a plinth, four corner turrets in faceted conical royal-blue roofs with gold finials, a gatehouse with a pointed-arch door, arrow-slit windows and hanging heraldic banners.

Original GLB204 KB Poster

Left rail: colours and the 4 knobs the agent wrote into this model — they rebuild the geometry and go into your download. Right rail: looks for the viewer. Drag to orbit, scroll to zoom.

Triangles: 1,848
Vertices: 5,320
Meshes · materials: 35 · 35
Size (W × H × D): 12 m × 19 m × 13 m
File: GLB · 204 KB
Animation: Static
Style: Low-poly
Collection: Royal Castle Court

Palette · named materials

stone white#f4f1ec
stone white dark#d7cebc
royal blue#2e67b8
royal blue dark#1f457a
royal blue light#6190d1
gold#d0a225
crimson#a51d34
soot black#1b1b22
mid grey#7d828c
dark wood#3d2a1c

Use it

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/royal-castle-court-keep/b0944aaea2/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

How it was made

The brief given to 1DesignTool's “3D object” template:

Keep for the Royal Castle Court kit. Design it as one clear asset at believable real-world scale for that setting (state the size in metres in meta.notes), with its main parts modelled and named, readable at thumbnail size and from every orbit angle. This is one part of the Royal Castle Court kit (Low-poly style, flat-lowpoly direction): A bright castle for ceremonies and intrigue. Use ONLY the kit palette, by name: stone white #f4f1ec, royal blue #2e67b8, gold #d0a225, crimson #a51d34, stone white dark #d7cebc, royal blue dark #1f457a, stone white light #f9f8f6, royal blue light #6190d1, soot black #1b1b22, warm white #f2ede2, mid grey #7d828c, dark wood #3d2a1c. Every material's `name` must be exactly the palette colour it uses — the GLB carries these names so the kit recolours as one; an unnamed material fails delivery. Kit knob: expose a param `bannerCrestAndColours` (0–1, default 0.5) for the kit's "Banner crest and colours" setting wherever it makes sense on this part, and keep that id. Material names are the palette colour NAMES listed above (e.g. "leaf green", "dark wood") — never a hex code like "#3d2a1c". meta.json must be valid JSON.

Agent: OpenCode · longcat-2.5-preview-free in 1DesignTool
Direction: Low-poly · family scenes
three-check PASS · glb-lint PASS

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Named parts · 18

Keep
Plinth and Base Course
Keep Body
Battlements
Turret NE
Turret NW
Turret SE
Turret SW
Roof NE
Roof NW
Roof SE
Roof SW
Gatehouse
Gate Door
Arrow Slit Windows
Front Banner
Side Banner
Gold Trim

Note: Static piece — no animation clip in the GLB. Real-world scale: 18.98 m tall, ~12 m footprint (a believable court keep). Part ids use the prefix 'keep.' because the kit's part-id regex rejects hyphens, so the library slug 'royal-castle-court-keep' cannot be a part-id segment. The GLB carries 10 distinct palette materials (named by colour); meshes are merged per part, so the file holds 35 material slots. bannerCrestAndColours drives the banner crest size and the colour bands: at 0 the banners are plain royal blue, at 1 they carry the full gold shield with crimson cross plus light-blue and crimson bands. Geometry is merged per part for a clean export; the part registry is unchanged.