#pragma once
#include <vector> // Standard-Vektor einschließen
#include <string>
#include <fstream>
#include "./GameManager.h"
#include "./Object3d.h"
#include <boost/shared_ptr.hpp>
#include <new>
#include <exception>
#include "Node.h"
#include "Vector.h"

using namespace std;

#define SPTR boost::shared_ptr

class Terrain : public Node
{
public:
	Terrain(void);
	~Terrain(void);
	void generateTerrain(std::string filename, int _numVertsPerRow, int _numVertsPerCol);
	float getHeight(float x, float y);
	float getOriginalHeight(float x, float y);
	float getSizeX();
	float getSizeZ();
	float getSlopeX(float x, float z);
	float getSlopeZ(float x, float z);
	void impact(float x, float z, int power);
	void setTextures(std::string texture0, std::string texture1, std::string texture2);
	
private:
	struct Vertex
	{
		Vertex(float _x, float _y, float _z, float _nx, float _ny, float _nz, DWORD _color, float _u, float _v)
		{
			x = _x;  
			y = _y;   
			z = _z;
			nx = _nx;
			ny = _ny;
			nz = _nz;
			color = _color;
			u = _u;
			v = _v;
		}

		float x, y, z;
		float nx, ny, nz;
		DWORD color;
		float u, v;
		
		enum FVF
		{
			FVF_Flags = D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_DIFFUSE | D3DFVF_TEX1 
		};
	};

	std::vector<float> readRawFile(std::string fileName);
	void createTerrainPatches();
	void updatePatch(int patchNumber, int x_top, int z_top, int x_bottom, int z_bottom, int powerRadius, float impactheight, int globalImpCenterX, int globalImpCenterZ, int patch_x, int patch_z);
	Vector *getNormals();
	void loadEffect();

	std::vector<float> heightmap;
	std::vector<float> originalHeightmap;
	int numVertsPerRow;
	int numVertsPerCol;
	float cellSpacing;
	float heightScale;
	int numVertices;
	int patchSize;
	int numberOfPatches;

	std::string texture0;
	std::string texture1;
	std::string texture2;
	std::string texture3;
	
	std::vector<Object3d*> terrainPatches;
	
	Vector *normals;

	D3DMATERIAL9 *standardMats;
	std::vector<IDirect3DTexture9*> Textures;

	//effect stuff:
	ID3DXEffect* TerrainEffect;
	
	//shader technique:
	D3DXHANDLE TexHandleTop;
	D3DXHANDLE TexHandleSlope;
	D3DXHANDLE TexHandleBottom;
	D3DXHANDLE AmbientHandle;
	D3DXHANDLE SunDirectionHandle;  
	D3DXHANDLE ShaderTechHandle;
};