project('Pong', 'c', license : 'GPL-3.0-only', version : '0.2', default_options : ['warning_level=3', 'werror=false', 'optimization=g', 'c_std=c11', 'prefix=/opt'])
fs = import('fs')

# Checks if on UNIX/POSIX System
if host_machine.system() != 'windows'
  if host_machine.system() != 'darwin'
    set_variable('posix', true)
  endif
else
  set_variable('posix', false)
endif

if get_variable('posix') == true
  message('Cleaning raylib...')
  # First clean up
  run_command('make', '-C', 'raylib/src', 'clean', capture : true, check : true)
  message('Building raylib...')
  # Then Build
  run_command('make', '-C', 'raylib/src', 'PLATFORM=PLATFORM_DESKTOP', 'RAYLIB_BUILD_MODE=RELEASE', capture : true, check : true)
else
  message('Cleaning raylib...')
  # Have to put OS_PLATFORM=linux or makefile will complain about del command not being found.
  run_command('mingw32-make', '-C', 'raylib/src', 'PLATFORM_OS=linux', 'clean', capture : true, check : true)
  message('Building raylib...')
  run_command('mingw32-make', '-C', 'raylib/src', 'PLATFORM=PLATFORM_DESKTOP', 'RAYLIB_BUILD_MODE=RELEASE', capture : true, check : true)
endif

# Find the static library
if fs.exists('raylib/libraylib.a') == true
    add_project_link_arguments('../raylib/libraylib.a', language : 'c')
elif fs.exists('raylib/src/libraylib.a') == true
    add_project_link_arguments('../raylib/src/libraylib.a', language : 'c')
else
    error('raylib failed to compile. Check meson-logs to see what went wrong.')
endif

message('raylib successfully compiled.')

Include_Directories = include_directories('raylib/src')

# Install launcher if flatpak
if get_option('build_flatpak') == true
    install_data('src/launch.sh', install_dir : 'bin')
endif

# Checks if on UNIX/POSIX System
if host_machine.system() != 'windows'
  if host_machine.system() != 'darwin'
    set_variable('posix', true)
  endif
else
  set_variable('posix', false)
endif

if get_variable('posix') == true
  X11_Dep = dependency('x11')
endif

GL_Dep = dependency('gl')
Threads_Dep = dependency('threads')

Sources = ['src/main.c', 'src/enemy.c', 'src/ball.c', 'src/title.c', 'src/versus.c', 'src/marathon.c']

if get_variable('posix') == true
  Dependencies = [GL_Dep, Threads_Dep, X11_Dep]
  add_project_link_arguments('-lGL', '-lm', '-lpthread', '-ldl', '-lrt', '-lX11', language : 'c')
else
  Dependencies = [GL_Dep, Threads_Dep]
  add_project_link_arguments('-lopengl32', '-lgdi32', '-lwinmm', '-lpthread', '-lm', language : 'c')
endif

# If on windows, we need the c11 threads emulation layer.
if get_variable('posix') == false
  Include_Directories = include_directories(['raylib/src', 'src/windows'])
endif

executable('pong', Sources, dependencies : Dependencies, install : true, install_dir : 'Pong', include_directories : Include_Directories)
install_subdir('resources', install_dir : 'Pong')