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README.md

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Setup

nix-shell # all further commands inside this shell
opam switch create ./ # only needed if it doesn't exist
opam install . --deps-only --locked
eval (opam env)
dune exec ./frontend_example.exe --profile release

Dune generates the celeste_ocaml.opam file. More info on that here.

OPAM for npm/yarn users

Standard library

  • Level 1 (builtin): Builtin functions in our interpreter that don't exist in normal Lua or on Pico-8 (e.g. __new_unknown_boolean)
  • Level 2 (builtin): Builtin functions in our interpreter that also exist in normal Lua (e.g. error)
  • Level 3 (lua): Native Lua functions that only exist on Pico-8, but are required by tests (e.g. add). These are used by our interpreter and by real Lua.
  • Level 4 (builtin): Pico8 functions that are not required by tests (e.g. sfx). Some of these (typically drawing functions) may be empty stubs.
  • Level 4 (lua): Same as above, but implemented as Lua functions. These are used by our interpreter, not by real Lua.
  • Level 5 (builtin): Pico8 functions that depend on cart data.