SeasonI/splash.h

#pragma once

#include "pixelGameEngine.h"

namespace olc
{
	class SplashScreen : public olc::PGEX
	{
	public:
		SplashScreen();

	protected:
		virtual void OnAfterUserCreate() override;
		virtual bool OnBeforeUserUpdate(float& fElapsedTime) override;

	private:
		olc::Renderable spr;
		std::vector<std::pair<olc::vf2d, olc::vf2d>> vBoom;
		olc::vf2d vScale;
		olc::vf2d vPosition;
		float fParticleTime = 0.0f;
		float fAspect = 0.0f;
		bool bComplete = false;
	};


}

#ifdef OLC_PGEX_SPLASHSCREEN
#undef OLC_PGEX_SPLASHSCREEN

namespace olc
{
	SplashScreen::SplashScreen() : olc::PGEX(true)
	{		
	}

	void SplashScreen::OnAfterUserCreate()
	{
		const char logo[] =
			"000000000000000000000000000000000000000000000000000000000000000000005"
			"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEED1EE"
			"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEED5EEE"
			"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE@E@000"
			"0000000000000000000000000000000000000000000000000000000000001E1D:ZZZZ"
			"ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ1D5BZZZZZZ"
			"ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ5@E:P0002Z0"
			"02ZZX000000000000ZP0000000000000000000000000000ZX000Z002XE1DX?o`o:Poo"
			"800SooaE5@E1ED5BX?ol5E@E0E1ED?oo5@E1ED5DE1D5E@ZQEEBPEE2QD5BSooclZ?olQ"
			"AB?oo5DEEDEEDE:SooaEEAE5DEEDoolEADEEDEAE5AEEBZ5EE:5EE:5@E:?oo?bXoob55"
			"8o3lEAEEAD5ADZ?oo5@E5EEAD5Cl01E5AD5AE5DE5@E:X01DXEEDXE1DXo3lo:Sl0800S"
			"ooaE1ED5EE5BXo00EEDEEE5EE?oo5EE5EE5DEEDEEDZQEEBQD5BQD5BSl?cl0?`0ZZZ?o"
			"o5D5E@EEDE03loaEEAEEDEEDoolEED5EDEAEEAEEBZ5EE:5@E:5@E:?oo?oloob008o00"
			"EAEEAD01EE?co5EE5EEAD03l01DE@05AE5AE5@0:XE000EEDXE1DXooloocoo8DDSlZQE"
			"5EE5EE5EDoolE1DE4E5EE?oo5AE5EE5DE5DEEDZQEEAAEEBQD5BPoo3oo3olQAB?bZ5DE"
			"1D5EDEE@ooaD5AD1D5EDoolE1DEE@EAD5@EEBZ5EE51ED:5@E:P000000020080:X0000"
			"00000000000000000000000000000000000:X0000002XE1DZZZZZZZZZZZZZZZZZZZZZ"
			"ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZQD5@ZZZZZZZZZZZZZZZZZZZZZZ"
			"ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZX5@E@00000000000000000000000"
			"00000000000000000000000000000000000000001E1EEEEEEEEEEEEEEEEEEEEEEEEEE"
			"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEED5EEEEEEEEEEEEEEEEEEEEEEEEEEE"
			"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE@5EEEEEEEEEEEEEEEEEEEEEEEEEEEE"
			"EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEED0000000000000000000000000000000"
			"0000000000000000000000000000000000000";

		spr.Create(203, 24);
		int px = 0, py = 0;
		for (size_t b = 0; b < 1624; b += 4)
		{
			uint32_t sym1 = (uint32_t)logo[b + 0] - 48;
			uint32_t sym2 = (uint32_t)logo[b + 1] - 48;
			uint32_t sym3 = (uint32_t)logo[b + 2] - 48;
			uint32_t sym4 = (uint32_t)logo[b + 3] - 48;
			uint32_t r = sym1 << 18 | sym2 << 12 | sym3 << 6 | sym4;

			for (int i = 0; i < 12; i++)
			{
				olc::Pixel p = olc::RED;
				switch ((r & 0xC00000) >> 22)
				{
				case 0: p = olc::Pixel(0, 0, 0, 255);  break;
				case 1: p = olc::Pixel(255, 255, 255, 255);  break;
				case 2: p = olc::Pixel(255, 120, 26, 255);  break;
				case 3: p = olc::Pixel(79, 193, 255, 255);  break;
				}
				spr.Sprite()->SetPixel(px, py, p);
				if (++px == 203) { py++; px = 0; }
				r <<= 2;
			}
		}

		spr.Decal()->Update();
		vBoom.resize(spr.Sprite()->width * spr.Sprite()->height);
		vScale = { float(pge->ScreenWidth()) / 500.0f, float(pge->ScreenWidth()) / 500.0f };
		fAspect = float(pge->ScreenWidth()) / float(pge->ScreenHeight());
		vPosition = olc::vf2d(
			(250 - spr.Sprite()->width) / 2.0f,
			(250 - spr.Sprite()->height) / 2.0f / fAspect);
		for (int y = 0; y < spr.Sprite()->height; y++)
			for (int x = 0; x < spr.Sprite()->width; x++)
				vBoom[y * spr.Sprite()->width + x] = std::make_pair(
					vPosition + olc::vf2d(x, y),
					olc::vf2d(
						(float(rand()) / float(RAND_MAX)) * 10.0f - 5.0f,
						(float(rand()) / float(RAND_MAX)) * 10.0f - 5.0f)
				);
	}

	bool SplashScreen::OnBeforeUserUpdate(float& fElapsedTime)
	{
		if (bComplete) return false;

		fParticleTime += fElapsedTime;

		for (int y = 0; y < spr.Sprite()->height; y++)
			for (int x = 0; x < spr.Sprite()->width; x++)
			{


				if (fParticleTime < 1.0f)
				{

				}
				else if (fParticleTime < 2.0f)
				{
					vBoom[y * spr.Sprite()->width + x].first =
						olc::vf2d(
							(250 - spr.Sprite()->width) / 2.0f + float(x),
							(250 - spr.Sprite()->height) / 2.0f / fAspect + float(y)
						) +
						olc::vf2d(
							(float(rand()) / float(RAND_MAX)) * 0.5f - 0.25f,
							(float(rand()) / float(RAND_MAX)) * 0.5f - 0.25f);
				}
				else if(fParticleTime < 5.0f)
				{
					vBoom[y * spr.Sprite()->width + x].first += vBoom[y * spr.Sprite()->width + x].second * fElapsedTime * 20.0f;
				}
				else
				{
					bComplete = true;
				}

				pge->DrawPartialDecal(vScale * vBoom[y * spr.Sprite()->width + x].first * 2.0f, spr.Decal(), olc::vf2d(x, y), { 1, 1 }, vScale * 2.0f, olc::PixelF(1.0f, 1.0f, 1.0f, std::min(1.0f, std::max(4.0f - fParticleTime, 0.0f))));
			}

		olc::vi2d vSize = pge->GetTextSizeProp("Copyright OneLoneCoder.com 2022");
		pge->DrawStringPropDecal(olc::vf2d(float(pge->ScreenWidth()/2) - vSize.x/2, float(pge->ScreenHeight()) - vSize.y * 3.0f), "Copyright OneLoneCoder.com 2022", olc::PixelF(1.0f, 1.0f, 1.0f, 0.5f), olc::vf2d(1.0, 2.0f));
		return true;
	}

}

#endif