z_build.sh

#!/bin/bash

# Use locally defined Raylib paths if available, otherwise fallback to system paths
# ci build paths are set during the pipeline run
RAYLIB_PATH="${RAYLIB_PATH:-/Users/grey/softwares/raylib/src}"
RAYLIB_LIB_PATH="${RAYLIB_LIB_PATH:-/Users/grey/softwares/raylib/build/raylib}"

C_FILES=$(find . -type f -name "*.c" ! -name "host.c" ! -name "release.c" ! -name "release_web.c")

# backend flags
# mac and windows - sdl
# web and linux - glfw
BACKEND_DEFINE=""
BACKEND_FLAGS=""
if [[ "$OSTYPE" == "linux"* ]]; then
  echo "linux build: Using glfw backend"
  BACKEND_DEFINE="-DPLATFORM_DESKTOP"
  BACKEND_FLAGS=$(pkg-config --cflags --libs glfw3)
else
  echo "-- Windows/macOS build: Using SDL backend --"
  BACKEND_DEFINE="-DPLATFORM_DESKTOP_SDL"
  BACKEND_FLAGS=$(pkg-config --cflags --libs sdl2)
fi

# detect windows
IS_WINDOWS=false
if [[ "$OSTYPE" == msys* || "$OSTYPE" == win32* || "$OSTYPE" == cygwin* ]]; then
  IS_WINDOWS=true
fi

# net and system libs
NET_FLAGS=""
RES_FILE=""
SYS_LIBS=""
if [[ "$IS_WINDOWS" == true ]]; then
  SYS_LIBS="-lwinhttp"
  RES_FILE="build/resource.res"
  echo "Windows build: nocurl specified, skipping libcurl"
else
  NET_FLAGS=$(pkg-config --cflags --libs libcurl)
fi

# actions
case "$1" in
  release)
    echo "Release build"

    if [[ "$IS_WINDOWS" == true ]]; then
      echo "Generating Windows icon resource"
      mkdir build
      echo 'IDI_ICON1 ICON "assets/game_icon.ico"' > build/resource.rc
      windres build/resource.rc -O coff -o build/resource.res
    fi

    echo "Building executable"
    gcc release.c $C_FILES -lm -O2 -flto -march=native $BACKEND_DEFINE -o build/game_release \
      -L$RAYLIB_LIB_PATH -lraylib \
      -Wl,-rpath,$RAYLIB_LIB_PATH \
      $BACKEND_FLAGS $NET_FLAGS $SYS_LIBS $RES_FILE
    echo "Done building executable"

    "$0" pak
    ;;
  
  wasm)
    echo "Building for wasm"
    mkdir build
    mkdir build/wasm

    # build pak
    "$0" pak

    # enable this for debugging wasm bugs
    # -s ASSERTIONS=2 -s SAFE_HEAP=1 \
    # -s USE_SDL=2 \ # sdl didn't work cause raylib
    emcc -o build/wasm/game.html -DWASM release_web.c $C_FILES \
      -Wall -std=c99 -D_DEFAULT_SOURCE -Wno-missing-braces -Wunused-result \
      -O3 -DWASM -I "$RAYLIB_PATH" -I "$RAYLIB_PATH/external" \
      --preload-file build/assets.pak@/assets.pak \
      -L. -L "$RAYLIB_PATH" \
      --preload-file assets \
      -s ASYNCIFY \
      -s USE_GLFW=3 \
      -s INITIAL_MEMORY=512MB \
      -s ALLOW_MEMORY_GROWTH=1 \
      -s STACK_SIZE=5242880 \
      -s FORCE_FILESYSTEM=1 \
      -s MAX_WEBGL_VERSION=2 -s USE_WEBGL2=1 \
      -s FETCH=1 \
      --shell-file "$RAYLIB_PATH/minshell.html" "$RAYLIB_PATH/web/libraylib.a" \
      -s 'EXPORTED_FUNCTIONS=["_free","_malloc","_main"]' \
      -s EXPORTED_RUNTIME_METHODS=ccall
    ;;
  
  assets)
    # build dll and pak
    "$0" dll
    "$0" pak
    ;;
  
  dll)
    echo "Building a dll"
    gcc -fPIC -DDEBUG -shared $C_FILES $BACKEND_DEFINE -o build/libgame.dylib \
      -L$RAYLIB_LIB_PATH -lraylib \
      -Wl,-rpath,$RAYLIB_LIB_PATH \
      $BACKEND_FLAGS $NET_FLAGS
    echo "Done building dll"
    ;;
  
  pak)
    echo "Building pak file"
    python3 tools/pak/make_pak.py
    echo "Done building pak"
    ;;
  
  clean)
    rm -fr build
    mkdir build
    "$0" dll
    "$0" pak
    ;;
  
  watch)
    # runs a nodemon server on all files to hot reload when there's something new
    echo "Watching files"
    nodemon --ext c,h,png --watch . --exec "./z_build.sh assets"
    ;;
  
  gen-maps)
    cd tools/map
    python3 map_gen.py
    cd ..
    ;;
  
  *)
    echo "Default debug run"
    gcc host.c -DDEBUG $BACKEND_DEFINE -o build/game_debug \
      -L$RAYLIB_LIB_PATH -lraylib \
      -Wl,-rpath,$RAYLIB_LIB_PATH \
      $BACKEND_FLAGS

    ./build/game_debug
    ;;
esac