Pydraw

This is a clone of the tutorial app https://github.com/pointer-gg/anchor-tutorial with Seahorse

It's a collaborative pixel art app on Solana

Programs

There is one program, pydraw. Its source code is at programs_py/pydraw.py

The rust source for it, programs/pydraw/src/lib.rs is build by running seahorse build.

From then on Anchor can be used as normal.

Tests

Tests are in the tests/ directory, and are normal Anchor tests. The test suite is copied from the original tutorial app.

Differences from the original

• The program name is changed because it needs to be snake case for Seahorse (was draw-with-frens)

• We're not checking the precise PDA seeds + bump on the update instruction. But this is ok because it's still required to be a Pixel account and the seeds we're checking are stored on-chain in that account anyway. Basically if create_pixel works correctly then update_pixel doesn't need to check the account beyond making sure it's a Pixel.

• The PDA seeds are different, because Seahorse doesn't allow lists yet.

Original (Rust): seeds = [b"pixel".as_ref(), [pos_x, pos_y].as_ref()],

Original (TS): [Buffer.from("pixel"), Buffer.from([x, y])],

Seahorse (Python): seeds = ["pixel", pos_x, pos_y]

Seahorse (TS): [Buffer.from("pixel"), Buffer.from([x]), Buffer.from([y])],