Noah Petherbridge
93623e4e8a
Especially to further optimize memory for large levels, Levels and
Doodads can now read and write to a ZIP file format on disk with
chunks in external files within the zip.
Existing doodads and levels can still load as normal, and will be
converted into ZIP files on the next save:
* The Chunker.ChunkMap which used to hold ALL chunks in the main json/gz
file, now becomes the cache of "hot chunks" loaded from ZIP. If there is
a ZIP file, chunks not accessed recently are flushed from the ChunkMap
to save on memory.
* During save, the ChunkMap is flushed to ZIP along with any non-loaded
chunks from a previous zipfile. So legacy levels "just work" when
saving, and levels loaded FROM Zip will manage their ChunkMap hot
memory more carefully.
Memory savings observed on "Azulian Tag - Forest.level":
* Before: 1716 MB was loaded from the old level format into RAM along
with a slow load screen.
* After: only 243 MB memory was used by the game and it loaded with
a VERY FAST load screen.
Updates to the F3 Debug Overlay:
* "Chunks: 20 in 45 out 20 cached" shows the count of chunks inside the
viewport (having bitmaps and textures loaded) vs. chunks outside which
have their textures freed (but data kept), and the number of chunks
currently hot cached in the ChunkMap.
The `doodad` tool has new commands to "touch" your existing levels
and doodads, to upgrade them to the new format (or you can simply
open and re-save them in-game):
doodad edit-level --touch ./example.level
doodad edit-doodad --touch ./example.doodad
The output from that and `doodad show` should say "File format: zipfile"
in the headers section.
To do:
* File attachments should also go in as ZIP files, e.g. wallpapers
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| .. | ||
| commands | ||
| main.go | ||
| README.md | ||
doodad.exe
The doodad tool is a command line interface for interacting with Levels and Doodad files, collectively referred to as "Doodle drawings" or just "drawings" for short.
Commands
doodad convert
Convert between standard image files (bitmap or PNG) and Doodle drawings (levels or doodads).
This command can be used to "export" a Doodle drawing as a PNG (when run against a Level file, it may export a massive PNG image containing the entire level). It may also "import" a new Doodle drawing from an image on disk.
Example:
# Export a full screenshot of your level
$ doodad convert mymap.level screenshot.png
# Create a new level based from a PNG image.
$ doodad convert scanned-drawing.png new-level.level
# Create a new doodad based from a BMP image, and in this image the chroma
# color (transparent) is #FF00FF instead of white as default.
$ doodad convert --key '#FF00FF' button.png button.doodad
Supported image types:
- PNG (8-bit or 24-bit, with transparent pixels or chroma key)
- BMP (bitmap image with chroma key)
The chrome key defaults to white (#FFFFFF), so pixels of that color are
treated as transparent and ignored. For PNG images, if a pixel is fully
transparent (alpha channel 0%) it will also be skipped.
When converting an image into a drawing, the unique colors identified in the drawing are extracted into the palette. You will need to later edit the palette to assign meaning to the colors.