Create a Minecraft-style level editor where users can design and edit levels with elements such as grass, stone, and water. The level editor should allow users to save their creations to a JSON file and load them back from a JSON file.

Features

- Block Types: Ensure that users can choose from different block types, including grass, stone, and water, to build their levels.
- User Interface: Design a simple intuitive interface where users can select blocks from a toolbar and place them on a grid-based layout.

Interaction

Placing and Removing Blocks
- Placement: Click on a grid cell to place the selected block type.
- Removal: Right-click (or a designated key) on a block to remove it from the grid.

Save and Load Levels
- Saving: Provide a 'Save' button that the user can click to save the current level layout to a JSON file.
- Loading: Allow users to input a file name to load a previously saved level when they click a 'Load' button.

JSON Structure
- Design a JSON structure that effectively represents the level layout, including positions and types of blocks.

Best Practices
- Use a grid-based layout system for simplicity and accuracy in block placement.
- Keep the UI responsive so that users can build efficiently with minimal lag.
- Ensure the save/load functionality is robust and handles potential errors gracefully, such as invalid file names or corrupted data files.

Design Layout
- Toolbar: Include a section with icons for each block type and buttons for saving and loading levels.
- Grid: Present the editable grid space where users will place their blocks.

This editor should provide a seamless and engaging experience similar to building in Minecraft, with a focus on simplicity and functionality for saving and loading created levels.

Make level editor minecraft style. Save to json and open from json

Q: What types of blocks or elements should be available in the level editor?
A: Grass, stone, water

Q: How should users interact with the editor to save and load levels?
A: Click button to save; enter file name to load