snake

Snake

This example presents a variant of the classic arcade Snake game, where players navigate a continuously growing snake to consume food on an 11 x 7 board. Uniquely, this version features always two pieces of food on the board and eliminates "walls" at the borders. Instead, when the snake's head crosses the boundary, it reappears on the opposite side.

Requirements

1. Installation of libtorch: Follow the instructions on the official PyTorch website: https://pytorch.org/cppdocs/installing.html. In this example, we select the GPU version of libtorch. Please modify the paths in the following part of CMakeList (examples/lunar_lander/CMakeList.txt):

   # libtorch gpu
   set(CUDA_TOOLKIT_ROOT_DIR "path/to/cuda")
   find_package(CUDA REQUIRED)
   list(APPEND CMAKE_PREFIX_PATH "path/to/libtorch")
   find_package(Torch REQUIRED)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${TORCH_CXX_FLAGS}")
   target_link_libraries(lunar_lander PRIVATE "${TORCH_LIBRARIES}")
   set_property(TARGET lunar_lander PROPERTY CXX_STANDARD 17)
   if (MSVC)
   file(GLOB TORCH_DLLS "${TORCH_INSTALL_PREFIX}/lib/*.dll")
   add_custom_command(TARGET example-app
                       POST_BUILD
                       COMMAND ${CMAKE_COMMAND} -E copy_if_different
                       ${TORCH_DLLS}
                       $<TARGET_FILE_DIR:example-app>)
   endif (MSVC)
   

2. Installation of : SFML provides a simple interface for games and multimedia application.

   sudo apt-get install libsfml-dev
   

Run

1. Compile

   cd path/to/project
   mkdir build
   cd build
   cmake .. -DBUILD_SNAKE=ON
   make
   

2. Run

   Train and evaluate DQN.

   ./examples/snake/snake dqn
   

   Train and evaluate PPO.

   ./examples/snake/snake ppo
   

   Run MCTS in human mode.

   ./examples/snake/snake mcts