CLI tool to combine multiple images into a single sprite sheet.

Gattai can be installed with cargo using:

cargo install --locked gattai

Gattai has a simple and easy-to-use CLI interface powered by clap.

gattai -o sprite-sheet.png images/**/*.png

This command will output two files:

• sprite-sheet.png: the sprite sheet containing all images.
• sprite-sheet.json: the positions and sizes of all used sprites.

Gattai provides several options to configure its output, such as:

• -o, --output-file: configure the name and format of the sprite sheet.
• -m, --output-mode: configure the format of the sprite data JSON file.
  • map: output sprite data as a JSON map:

  {
    "sprites": {
      "path/to/image1.png": {
        "x": 0,
        "y": 0,
        "w": 16,
        "h": 16
      },
      "path/to/image2.png": {
        "x": 16,
        "y": 16,
        "w": 16,
        "h": 16
      }
    }
  }

  • array: output sprite data as a JSON array:

  {
    "sprites": [
      {
        "path": "path/to/image1.png",
        "bounds": {
          "x": 0,
          "y": 0,
          "w": 16,
          "h": 16
        }
      },
      {
        "path": "path/to/image2.png",
        "bounds": {
          "x": 16,
          "y": 16,
          "w": 16,
          "h": 16
        }
      }
    ]
  }

• -p, --padding: configure the padding between the sprites and the border of the image.
• -s, --spacing: configure the spacing between the sprites.

Gattai is able to use all image formats supported by image, the only restriction being that output formats must have an alpha channel.

Gattai is dual-licensed under either

• MIT License (LICENSE-MIT or https://opensource.org/license/mit/)

• Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above without any additional terms or conditions.