Gemini Image Generator

Generate images using Google Gemini's image generation capabilities.

Prerequisites

• Python 3.8+

• Google AI Studio API key

• Virtual environment with dependencies

Setup

Navigate to scripts directory

cd scripts

Create virtual environment

python3 -m venv venv

Install dependencies

./venv/bin/pip install -r requirements.txt # Unix

or

.\venv\Scripts\pip install -r requirements.txt # Windows

Set API key

export GEMINI_API_KEY="your-api-key" # Unix

or

$env:GEMINI_API_KEY = "your-api-key" # PowerShell

Get your API key from Google AI Studio.

Usage

Basic Text-to-Image

python generate.py --prompt "A serene mountain landscape at sunset" --output landscape.png

With Reference Image (Style Transfer)

python generate.py --prompt "Same scene but in winter" --reference landscape.png --output winter.png

Prompt Engineering Tips

For best results, structure prompts as:

[Subject] + [Style] + [Composition] + [Technical] + [Mood]

Example for game assets:

"A bio-mimetic robot with Art Nouveau brass gears and botanical vine patterns, centered composition on transparent background, flat vector style suitable for game sprite, warm golden hour lighting, whimsical and charming mood"

Style keywords that work well:

• Art styles: Art Nouveau, steampunk, Studio Ghibli, pixel art, vector illustration

• Technical: transparent background, game sprite, icon, UI element, seamless texture

• Mood: whimsical, dramatic, cozy, ethereal, vibrant

Parameters

Parameter Required Description

--prompt

Yes Text description of desired image

--output

Yes Output file path (.png)

--reference

No Reference image for style guidance

Troubleshooting

Error Solution

API key not valid Check GEMINI_API_KEY is set correctly

403 Forbidden API key may have IP restrictions

Model not found Model names change; check Google AI docs

No image generated Try simpler prompt, check API quota

Integration with Game Assets Team

This skill is the primary image generation tool for the game-assets-team skill. Use it for:

• Concept art exploration

• UI element generation

• Character/Simulin designs

• Background and environment art

• Promotional materials

Always follow the art direction guidelines in game-assets-team for consistent visual style.