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Trebuchet

A low-poly counterweight trebuchet for the Siege Camp kit — twin A-frames on sled skids, a hinged stone-filled counterweight, sling trough and rear windlass. Baked 7-second loop: hold, drop, sling whip, settle, winch back down.

Original GLB198 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: 1,520
Vertices: 4,528
Meshes · materials: 27 · 9
Size (W × H × D): 2.9 m × 7.0 m × 8.1 m
File: GLB · 198 KB
Animation: scene-motion · 7.0s
Style: Low-poly
Collection: Siege Camp

Palette · named materials

mud light#8f7356
mud#634d36
dark wood#3d2a1c
steel#7e8c9a
canvas tan#bf9769
canvas tan dark#9a7142
canvas tan light#d2bca2
mid grey#7d828c
faded red#c05959

Use it

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

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/siege-camp-trebuchet/5a08d7f005/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

const mixer = new THREE.AnimationMixer(gltf.scene);
gltf.animations.forEach((clip) => mixer.clipAction(clip).play());
// in your loop: mixer.update(delta)

How it was made

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

Trebuchet for the Siege Camp 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. It moves: author a seamless baked loop (2–12 s) with every pivot exactly at its hinge, axle or swivel, and keep the base still. This is one part of the Siege Camp kit (Low-poly style, flat-lowpoly direction): An army camped outside the walls. Use ONLY the kit palette, by name: canvas tan #bf9769, mud #634d36, steel #7e8c9a, faded red #c05959, canvas tan dark #9a7142, mud dark #32261b, canvas tan light #d2bca2, mud light #8f7356, 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 `armyColours` (0–1, default 0.5) for the kit's "Army colours" setting wherever it makes sense on this part, and keep that id.

Agent: Devin · SWE-2 Max in 1DesignTool
Direction: Low-poly · family abstract-kinetic
three-check PASS · glb-lint PASS

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Named parts · 9

Trebuchet
Base and trough
A-frame cheeks
Throwing arm
Counterweight
Sling and stone
Windlass winch
Haul rope
Pennant mast

Note: Believable mid-size counterweight trebuchet: arm tip apex ~8.0 m mid-throw, ~4.9 m cocked, ~5.9 m long on its skids; 1520 triangles. One 7 s seamless clip (cocked hold → counterweight drop → sling whip over the top → settle → windlass re-cock); all pivots on real axles/hinges; skids stay planted. armyColours swaps the pennant and the counterweight shield between faded-red livery and struck canvas-tan-dark, and scales the shield. Delivered GLB was material-deduped after export (27 identical per-mesh clones → 9 palette-named records; geometry and clip unchanged). Intentional lint warnings: non-indexed geometry (flat-shaded facets), timber joinery overlaps, mast finial/pennant as glued ornaments, and the ~7 m scale heuristic.