bevy-hex-sandbox

Example implementation of a 3d hexagon tile-based map editor using bevy v0.10.

smol.mov

This is not a maintained project.

Instead, this is a series of example implementations of how a series of capabilities could be implemented in bevy. There are no guarantees that any of the implementations are idiomatic.

Capabilities/Functionality:

• Maintainable/scaleable egui interface
  • adapted from bevyengine/bevy#5522
  • widgets aren't required to implement SystemParam
  • implementation: src/ui/widget.rs
  • complex usage: src/bin/editor_ui/panel.rs
• Reorganizable egui tile picker
  • multi-select, drag & drop to sort
  • implementation editor_ui::panel::TilePicker
• Render images of GLTF models
  • use a second camera & RenderLayers to render each GLTF scene into an image
  • implementation: src/thumbnail_render.rs
• native file pickers (save & load) via IoTask & rfd crate
  • src/file_picker.rs
• IoTask-based save & load (not using Assets)
  • When bevy's Asset infrastructure is too heavy-weight for loading config data, we can use IoTask to load & return the results
  • implementation tileset::tileset_importer & tileset::tileset_exporter
  • more complicated example in src/persistence.rs
• Serialize (not reflection) based save/load
  • When you need to save a framework agnostic format (example: map file) reflection-based formats expose too many internals
  • Reflection-based save also causes noise in diffs due to Entity values changing between each run
  • implementation: src::persistence::MapFormat
  • not fully diff-stable at this time (tiles not sorted)
  • format needs improvements for diffs to be fully human readable
• version-aware save/load
  • limited support, recognizes incorrect version
  • can be expanded to generate intermediate representation based on what the version provides
  • see Tileset::Serialize/Deserialize

Assets

Assets included in this project were created by Kenney, and available at https://kenney.nl/assets/hexagon-kit

Usage

• File -> New Map
• In the Tileset panel, click the "..." button and select "Import Tileset"
  • Note: bug here, may have to click it multiple times
• Select "kenney.tileset.ron"
• click on tile then click on map

Controls

• Q/E: Rotate currently selected tile
• [ / ]: Rotate camera
• Scroll wheel: zoom in/out
• Space + mouse move: pan camera