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lambda-lantern

★ 167 Open GitHub ↗

🧙 ‎‎ A 3D game about functional programming patterns. Uses PureScript Native, C++, and Panda3D.

// repository documentation

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# Lambda Lantern :smiley:

![Lambda Lantern](https://i.imgur.com/qsocAZg.png)

# What is Lambda Lantern? :thinking:

![Lambda Lantern](https://i.imgur.com/wQBJNrS.gif)

Lambda Lantern is a game made with PureScript, PureScript Native, and Panda3D.
The premise of the game involves collecting and using functional programming patterns
to solve puzzles and ultimately escape a dungeon.

One of the purposes of Lambda Lantern is to demonstrate binding PureScript to C++.

Lambda Lantern originally started as a [GitHub Game Off submission](https://itch.io/jam/game-off-2018/rate/338096).

# How do I build and run Lambda Lantern? :hammer:

![Lambda Lantern](https://i.imgur.com/V6bVIRR.png)

```bash
# Install Git.
# Install nvm (https://github.com/creationix/nvm).
# Install Panda3D (https://www.panda3d.org/download/sdk-1-10-1/).
# Install Haskell Stack (https://docs.haskellstack.org/en/stable/README/).

# Install PureScript Native (https://github.com/andyarvanitis/purescript-native).

git clone https://github.com/andyarvanitis/purescript-native.git
cd purescript-native
git checkout aa857adec6aa40edac91bcacfe4c3b7c5f1c3f2d
stack install

# Update path for PureScript Native compiler pscpp.

export PATH="${PATH}:${HOME}/.local/bin"

# Download and install the FFI exports.

git clone https://github.com/lettier/purescript-native-ffi.git
cd purescript-native-ffi
git checkout lambda-lantern

git clone https://github.com/lettier/lambda-lantern.git

# Note the trailing dot.
cp -nr purescript-native-ffi/. lambda-lantern/ffi/

cd lambda-lantern

# Install Node.js.

nvm install `cat .nvmrc` && nvm use

# Install PureScript and psc-package.

npm install -g purescript@0.13.0 psc-package-bin-simple@3.0.1

# Install the PureScript dependencies.
psc-package install

# Build Lambda Lantern.
# Double check the include and lib paths.
# You may need additional flags for your platform.

make \
  CXXFLAGS=" \
    -fmax-errors=1 \
    -I/usr/include/python \
    -I/usr/include/panda3d \
    -I/usr/include/freetype2" \
  LDFLAGS=" \
    -L/usr/lib/panda3d \
    -lp3framework \
    -lpanda \
    -lpandafx \
    -lpandaexpress \
    -lp3dtoolconfig \
    -lp3dtool \
    -lp3pystub \
    -lp3direct \
    -pthread \
    -lpthread"

# Run Lambda Lantern.

LAMBDA_LANTERN_ASSETS_PATH="./assets" ./output/bin/lambda-lantern
```

# What is the license? :scroll:

![Lambda Lantern](https://i.imgur.com/mwTFPkq.png)

For license information, see [LICENSE](LICENSE).

# Who wrote Lambda Lantern? :copyright:

![Lambda Lantern](https://i.imgur.com/gXtQR61.gif)

lambda-lantern

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