#include "pixelGameEngine.h"
#define OLC_PGEX_GRAPHICS3D
#include "olcPGEX_Graphics3D.h"

using namespace olc;

class Graphics3DPGEX_Example : public olc::PixelGameEngine
{
	GFX3D::mesh cube;
	GFX3D::PipeLine renderer;

	GFX3D::vec3d vUp = {0,1,0};
	GFX3D::vec3d vEye = {0,0,-4};
	GFX3D::vec3d vLookDir = {0,0,1};

	float fTheta=0;

	Sprite*cubeTex;
	
public:
	Graphics3DPGEX_Example()
	{
		sAppName = "Graphics3D PGEX Example";
	}

public:
	bool OnUserCreate() override
	{
		cube.LoadOBJFile("assets/unitcube.obj");
		olc::GFX3D::ConfigureDisplay();

		cubeTex=new Sprite("assets/dirtblock.png");


		renderer.SetProjection(90.0f, (float)ScreenHeight()/(float)ScreenWidth(), 0.1f, 1000.0f, 0.0f, 0.0f, ScreenWidth(), ScreenHeight());
		return true;
	}

	bool OnUserUpdate(float fElapsedTime) override
	{
		fTheta+=fElapsedTime;

		Clear(VERY_DARK_BLUE);

		GFX3D::ClearDepth();

		GFX3D::vec3d vLookTarget = GFX3D::Math::Vec_Add(vEye, vLookDir);

		renderer.SetCamera(vEye, vLookTarget, vUp);

		GFX3D::mat4x4 matRotateX=GFX3D::Math::Mat_MakeRotationX(fTheta);
		GFX3D::mat4x4 matRotateZ=GFX3D::Math::Mat_MakeRotationZ(fTheta/3.0f);
		GFX3D::mat4x4 matWorld=GFX3D::Math::Mat_MultiplyMatrix(matRotateX,matRotateZ);

		renderer.SetTransform(matWorld);

		renderer.SetTexture(cubeTex);
		//renderer.Render(cube.tris, GFX3D::RENDER_WIRE);
		
		renderer.Render(cube.tris);

		return true;
	}

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

int main()
{	
	Graphics3DPGEX_Example demo;
	if (demo.Construct(768, 480, 2, 2))
		demo.Start();

	return 0;
}