Bullet-Hell Shrine

A danmaku dodge shooter built with Spinel and sdl — a throughput demo pushing hundreds of simultaneous fill_rect bullets per frame.

A stationary shrine boss fires scripted radial bursts, a rotating spiral, aimed spreads, and falling bullet walls. Dodge for 60 seconds to win. Scoring comes from survival ticks plus "grazing" — passing close to a bullet without getting hit.

Requirements

• Spinel (spin)
• SDL3, statically linked via the sdl package — no brew install needed at build or run time

Install Spinel

With asdf:

asdf plugin add spinel https://github.com/jockofcode/asdf-spinel
asdf install spinel master
asdf set -u spinel master   # make it the default (~/.tool-versions)

Or build it from source:

git clone https://github.com/matz/spinel.git
cd spinel
make
export PATH="$PWD/bin:$PATH"
cd -

Play

spin run bullet_hell_shrine

Or build first and run the binary directly:

spin build
./build/bin/bullet_hell_shrine

Controls

Key	Action
Arrow keys	Move ship
R	Restart (after hit / survival)
Esc / Q	Quit