-----------------------------------------------------------
--                                                       --
--    Engine configuration                               --
--                                                       --
--    Builds Spectre engine as static library.           --
--                                                       --
--      Output variables:                                --
--        libspectre = path to .lib file                 --
-----------------------------------------------------------

local settings = CopySettings(global_settings, "Engine")

settings.cc.includes:Add("include/")
settings.cc.includes:Add("source/")

if global_settings.debug then
	settings.cc.flags:Add("-DSPECTRE_DEBUG")
end

-- Platform
if TARGET_OS == "Win32" then
	settings.cc.defines:Add("SPECTRE_PLATFORM_WIN=1")
elseif TARGET_OS == "Unix" then
	settings.cc.defines:Add("SPECTRE_PLATFORM_UNIX=1")
end

-- FreeType2
if TARGET_OS == "Win32" then
	settings.cc.includes:Add("vendor/FreeType2/include")

	-- Staticly link freetype on windows.
	settings.link.libpath:Add("vendor/FreeType2/lib/x86")
else
	settings.cc.includes:Add("/usr/include/freetype2")
end

-- STB
settings.cc.includes:Add("vendor/stb/include")

-- Source files
-----------------------------------------------------------

local system_module = Module("source/System", {
	"ByteOrder.cpp",
	"File.cpp",
	"Path.cpp",
	"MessageHandler.cpp",
	"MessageQueue.cpp",
	"Event.cpp",
	"EventListener.cpp",
	"Log.cpp"
})

local platform_common_module = Module("source/Platform", {
	"PlatformApplication.cpp",
	"PlatformDisplay.cpp"
})

if TARGET_OS == "Win32" then
	platform_spec_module = Module("source/Platform/Win32", {
		"Win32Application.cpp",
		"Win32Display.cpp",
		"Win32GLContext.cpp",
		"Win32Input.cpp",
		"Win32Internal.cpp",
		"Win32Keyboard.cpp",
		"Win32Misc.cpp",
		"Win32Mouse.cpp",
		"Win32EventQueue.cpp",
		"Win32System.cpp",
		"glad_wgl.c"
	})
elseif TARGET_OS == "Unix" then
	platform_spec_module = Module("source/Platform/Unix", {
		"Xlib.cpp",
		"UnixApplication.cpp",
		"X11Display.cpp",
		"GLXContext.cpp",
		"X11Input.cpp",
		"X11Keyboard.cpp",
		"X11Mouse.cpp",
		"X11EventQueue.cpp",
		"X11WindowEventHandler.cpp",
		"UnixMisc.cpp",
		"UnixSystem.cpp",
		"glad_glx.c"
	})
end

local input_module = Module("source/Input", {
	"InputDevice.cpp",
	"InputModule.cpp",
	"Keyboard.cpp",
	"Mouse.cpp"
})

local display_module = Module("source/Display", {
	"Display.cpp",
	"DisplayDescription.cpp",
	"DisplayMode.cpp",
	"GLContext.cpp"
})

local graphics_module = Module("source/Graphics", {
	-- Primitives
	"Vertex2D.cpp",
	"Transformable.cpp",
	"Sprite.cpp",

	-- Rendering
	"BatchRenderer2D.cpp",
	"DefaultRenderer2D.cpp",
	"Renderable2D.cpp",
	"Renderer2D.cpp",
	"RenderState.cpp",
	"Shader.cpp",
	"ShaderProgram.cpp",
	"Texture.cpp",

	-- Text
	"Font/Engine/FreeTypeEngine.cpp",
	"Font/Engine/FreeTypeError.cpp",
	"Font/Engine/FreeTypeLib.cpp",
	"Font/FontDescription.cpp",
	"Font.cpp",
	"Text.cpp",

	-- Image
	"Image.cpp",
	"ImageLoader.cpp",
	"Image/IcoFormat.cpp",
	"PixelFormat.cpp",

	"OpenGL.cpp",
	"GL/glad.c",
	"GL/CheckError.cpp",
})

local core_module = Module("source/Core", {
	"String.cpp"
})

local math_module = Module("source/Math", {
	"Color.cpp",
	"Logarithm.cpp",
	"Math.cpp",
	"Transform.cpp"
})

local game_module = Module("source", {
	"Game/FPSCounter.cpp",
	"Game/GameTime.cpp",
	"Game.cpp",
})

local scene_module = Module("source/Scene", {
	"Camera2D.cpp"
})

-- Build target
-----------------------------------------------------------

-- Dependancies
if TARGET_OS == "Win32" then
	Import("vendor/FreeType2/build.lua")
end

-- engine
local obj = Compile(settings, {
	system_module,
	platform_common_module,
	platform_spec_module,
	input_module,
	display_module,
	graphics_module,
	core_module,
	math_module,
	game_module,
	scene_module
})

libspectre = StaticLibrary(settings,
	"spectre",
	obj,
	ft2_obj
)