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OCC is an unofficial open source engine reimplementation of the game trilogy Crystal Caves

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C/C++ CI #CrystalCaves on Mastodon Download at itch.io

OpenCrystalCaves

OCC is an unofficial open source engine reimplementation of the game trilogy Crystal Caves.

Download binaries and project info at itch.io

This repository includes the shareware version of Crystal Caves. To play the full, retail version, you can copy over the data files or purchase them at Steam or GoG.

Current state of OCC:

Animation

Screenshot 3

Currently the engine can:

  • Load sprite, item and level data.
  • Render a level that is selected at compile time.
  • Render items that, both behind and in front of the player, as well as animated items.
  • Move the player around, jumping, colliding with solid items and moving platforms.

Features that are missing:

  • Main menu including starting a new game and loading a saved game.
  • Exiting levels.
  • Items.
  • Enemies.
  • (and much more).

Compiling OCC

OCC is built using C++17 and requires external libraries: SDL 2.0, SDL_image and SDL_mixer and . SDL2 must be installed and available in /usr/include/SDL2. Additionally the build system cmake must be installed.

Steps to compile (Linux, macOS):

git clone --recursive https://github.com/gurka/OpenCrystalCaves.git
cd OpenCrystalCaves
mkdir debug
cmake -Bdebug -DCMAKE_BUILD_TYPE=debug occ
cd debug
make

The binary will be available at OpenCrystalCaves/build/occ

Or in Windows (with vcpkg):

# In vcpkg dir
./vcpkg install --triplet x64-windows sdl2 --recurse
# In your projects dir
git clone --recursive https://github.com/gurka/OpenCrystalCaves.git
cd OpenCrystalCaves
cmake -Bbuild -DCMAKE_TOOLCHAIN_FILE=C:/path/to/vcpkg/scripts/buildsystems/vcpkg.cmake occ -A x64

The Visual Studio project will be available at OpenCrystalCaves/build

Running OCC

OCC requires data files from the original Crystal Caves (any episode). Either install it via Steam or GoG, or copy the game data to the media folder in the occ package (such as CC1.GFX).

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OCC is an unofficial open source engine reimplementation of the game trilogy Crystal Caves

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