MosaicPGEShader/main.cpp

#define OLC_GFX_OPENGL33
#include "pixelGameEngine.h"

using namespace olc;

#define WIDTH 640
#define HEIGHT 480

class Example : public olc::PixelGameEngine
{
	float lastIncrease=0.f;

public:
	Example()
	{
		sAppName = "Example";
	}

public:
	olc::Key last;
	bool OnUserCreate() override
	{
		return true;
	}

	bool OnUserUpdate(float fElapsedTime) override
	{
		if(lastIncrease==0.f){
			if(GetKey(RIGHT).bHeld){
				SetMosaicEffect(GetMosaicEffect()+1);
				lastIncrease=0.01f;
			}
			if(GetKey(LEFT).bHeld){
				SetMosaicEffect(GetMosaicEffect()-1);
				lastIncrease=0.01f;
			}
		}else{
			lastIncrease=std::max(0.f,lastIncrease-fElapsedTime);
		}
		Clear(BLACK);
		srand(48190);
		for(int i=0;i<500;i++){
			if(rand()%2){
				DrawCircle({rand()%640,rand()%480},rand()%30,{uint8_t(rand()%255),uint8_t(rand()%255),uint8_t(rand()%255)});
			}else{
				FillCircle({rand()%640,rand()%480},rand()%30,{uint8_t(rand()%255),uint8_t(rand()%255),uint8_t(rand()%255)});
			}
		}
		DrawStringDecal({1,1},"Mosaic Effect: "+std::to_string(GetMosaicEffect()),BLACK);
		DrawStringDecal({0,0},"Mosaic Effect: "+std::to_string(GetMosaicEffect()),WHITE);
		return true;
	}

	bool OnUserDestroy()override{
		return true;
	}
};

enum Direction{
    RIGHT,
    DOWN,
    LEFT,
    UP
};

struct Data{
	int x,y;
};


int main()
{	
	Example demo;
	if (demo.Construct(640, 480, 4, 4))
		demo.Start();

	return 0;
}