converts a 1.12.2 resource pack to 1.21.1 format. This will handle the major changes needed for compatibility.

Pack Format Update: Updates pack.mcmeta to use pack format 48 (1.21.1 compatible)

Texture Migration:

• Moves textures/blocks/ to textures/block/
• Moves textures/items/ to textures/item/
• Renames specific textures that changed names between versions

Model Updates: Updates model files to reference the new texture paths

Blockstate Updates: Updates blockstate files to use correct model references

Sound Updates: Updates sound event names that changed

# Convert a zip file
python packmapper.py "MyPack_1.12.2.zip" "MyPack_1.21.1.zip"

# Convert a directory
python packmapper.py "MyPack_1.12.2/" "MyPack_1.21.1/"

# Verbose output
python packmapper.py -v "input_pack.zip" "output_pack.zip"

• Directory structure changes (blocks → block, items → item)
• Texture file renames (like stone_granite.png → granite.png)
• Model and blockstate file updates
• Pack format version updates
• Sound event name changes

• It doesn't add textures for new blocks/items introduced after 1.12.2
• Complex custom models might need manual review
• Some advanced features like custom fonts or shaders may need additional work
• Animation metadata files might need manual checking

The program creates a temporary directory during conversion and cleans up afterward. It provides detailed progress output and error handling for common issues.