Building a Comedy Scene of a Robotic Arm Chasing a Cat with GPT-6 Astra and Blender
The author says they used GPT-6 Astra and Blender to build the scene and camera setup, and shared Chinese generation requirements for a 10-second animal comedy short. The prompt defines an orange-and-white cat, a household robotic arm, a cat-tail-shaped toy, a living room setting, camera relationships, and a comedic reversal.
A starting brief based on the creator's public project, not a verbatim original prompt. Your result will vary.
Creator notes
Use this Chinese prompt together with Images 1–4 and the reference video to build and generate a 3D scene video featuring the cat, robotic arm, toy, storage box, and indoor camera movements.
GPT-6 AstraBlender3D scenerobotic armorange-and-white catcat-tail-shaped toyindoor living roomcamera setup
The prompt
Generate a 10-second, 16:9 landscape animal comedy short with a realistic, live-action cinematic look
. A household robotic arm chases and tries to grab an orange-and-white cat. The cat nimbly dodges and mischievously circles behind a storage box. The gripper clamps onto the orange tail sticking out from behind the box, then lifts it to reveal that it is a cat-tail-shaped toy. The real cat has circled around to the robotic arm's base and reaches out to press the red power-off button. The robotic arm shuts down, and the cat looks happy and satisfied.
Start directly with the chase and grab attempt. Maintain suspense through occlusion in the middle, reveal the reversal when the toy is lifted, and end with the cat actively shutting down the arm for a second punchline. Use only diegetic sound effects throughout; do not generate background music, BGM, narration, or dialogue.
[Asset Anchors and Reference Rules]
Use the reference video cat_robot_previs as a reference for camera movement, timing, motion paths, and spatial relationships.
The orange block-shaped body, white feet, and geometric figure with ears and a tail in the reference video correspond to the real orange-and-white cat in Image 1.
The cream-white linkages, orange joints, three-finger gripper, and base with a red button correspond to the robotic arm in Image 2.
The small figure made of an upright orange tail, gray connector rod, and green base corresponds to the cat-tail-shaped toy in Image 3. The toy and the cat are two separate objects.
The central white box corresponds to the real cream-white storage box. Preserve its position, volume, and occlusion function. Use Image 4 as the reference for the indoor environment.
Generate the scene according to the reference video's edit timing, camera positions, shot sizes, the cat's route, the robotic gripper's tracking path, the occlusion behind the box, the toy's lifting path, and the contact relationship between the cat's paw and the button.
The cat's geometric translation is used only to indicate its motion path. Regenerate natural side hops, running, turning, crouching, head turns, and paw-raising actions. Subtle facial expressions and body movements may be added within the original positions and time ranges, without changing the key events or spatial relationships. Remove all graybox models, geometric placeholder shapes, and guide markers.
Image 1 image: the only cat appearance reference.
Use the same young adult orange-and-white short-haired cat throughout: orange tabby markings on the crown and back, a white muzzle and chest, four white paws, amber eyes, a pink nose, and an orange ringed tail with a pale tip. Preserve realistic body proportions, coat-color distribution, facial features, and tail length. Fine fur, natural whiskers, no clothing.
Image 2 image: the only robotic arm appearance reference.
Cream-white housing, orange joint covers, dark-gray connectors, a soft three-finger gripper, and an amber status light at the wrist, mounted on a low, wide base. The red power-off button on the robotic arm's base must be reachable by the cat while standing on the floor. Keep the base fixed; the arm performs the chase and grab attempt through joint rotation.
Image 3 image: the only cat-tail-shaped toy appearance reference.
Orange ringed plush tail with a pale tip, connected underneath to a metal spring and a mint-green wobble base with a white fishbone pattern. When the gripper grabs the plush tail, the spring and base must be lifted together as one complete toy, with the connection remaining clear at all times.
Image 4 image: scene appearance reference.
Use the warm living room, light wood flooring, large windows with daylight, light-colored sofa, wooden furniture, houseplants, and pet-living details from Image 4 as references. All action takes place on the indoor floor. Do not include the studio backdrop or grid layout from the reference image in the final video.
[Visual Style and Scene]
The photographic quality of a realistic pet short combined with a refined home-robot commercial: natural lighting, realistic materials, with comedy driven by behavior and timing.
A spacious residential living room with light oak flooring featuring fine wood grain and soft reflections. Warm daylight enters through floor-to-ceiling windows on the left. Sheer curtains cast soft shadows across the floor, while the cat's fur edges and the robotic arm's housing catch natural rim light.
The background includes a light-gray sofa, throw pillows, a small coffee table, a rug, a warm-toned floor lamp, and storage cabinets. Place houseplants by the window, with a cat bed and scratching post to the side. Keep the rug in the distance so the foreground activity area remains a continuous, open expanse of wood flooring.
Place a cream-white, round-cornered storage box slightly behind center, with a pale orange handle. The box should conceal the crouching cat and the toy's base while leaving connected routes open on the left, right, and behind it. Position the robotic arm to the right of the box, with its red button facing the position where the cat eventually arrives.
Keep the camera near the cat's eye level, with the subjects clearly visible and the background moderately blurred. Use a low angle to emphasize the suddenness of the gripper's downward grab, the cat's nimble movements, and the layered reveal behind the box. Give every contact natural shadows and believable force feedback.
How to use this prompt
01
Start with the right workspace
Open your preferred coding assistant or 3D tool. Use the model shown on the example as a starting point, and check any linked project for setup instructions.
02
Choose one thing to change
Swap the subject, art style or setting. Keep the camera and interaction clear. Build a small version first, then refine one detail at a time.
03
Give the scene its own assets
For a custom character or prop, create a 3D model from a short object description or reference image, then bring it into your project.
Previews belong to their respective creators. Check the original source and project license before reusing code or assets.