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

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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

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

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