RetRot_DxLib.h

#pragma once

#include <DxLib.h>

namespace RetRot
{

	class RetRot
	{
		bool iniFlag;

		int scrW;
		int scrH;
		bool scrFull;

		int pixSz;

		int hScreen;

	public:
		operator bool()
		{
			return iniFlag;
		}

		RetRot(int ScreenWidth = 320, int ScreenHeight = 240, bool ScreenFull = false, int PixelSize = 2)
		{
			iniFlag = false;
			pixSz = PixelSize;

			if (ChangeWindowMode(!ScreenFull) != DX_CHANGESCREEN_OK)
			{
				return;
			}

			if (DxLib_Init() == -1)
			{
				return;
			}

			if (SetGraphMode(scrW * pixSz, scrH * pixSz, 16) != DX_CHANGESCREEN_OK)
			{
				return;
			}

			hScreen = MakeScreen(scrW, scrH);
			if (hScreen == -1)
			{
				return;
			}

			if (SetDrawScreen(hScreen) == -1)
			{
				return;
			}

			iniFlag = true;
		}

		int FrameProcess()
		{
			if (ProcessMessage() == -1)
			{
				return -1;
			}

			if (SetDrawScreen(DX_SCREEN_FRONT) == -1)
			{
				return -1;
			}

			if (DrawExtendGraph(0, 0, scrW * pixSz, scrH * pixSz, hScreen, FALSE) == -1)
			{
				return -1;
			}

			if (SetDrawScreen(hScreen) == -1)
			{
				return -1;
			}
		}

		void Exit()
		{
			DxLib_End();
		}
	};

}