//Handles particles

#include<d3d9.h>
#include<d3dx9.h>

#define CUSTOMVERTEX_FVF (D3DFVF_XYZ|D3DFVF_TEX1|D3DFVF_DIFFUSE)

struct CUSTOMVERTEX
{
	float fX,fY,fZ;
	float fU,fV;
	D3DCOLOR color;
};

class cParticle
{
public:
	bool SetupPolygon(LPDIRECT3DDEVICE9);
	void SetupMovement(LPDIRECT3DDEVICE9);
	void RenderParticle(LPDIRECT3DDEVICE9);
private:
	LPDIRECT3DVERTEXBUFFER9 m_iD3DVertBuf; //Vertex buffer for particle polygon

	LPDIRECT3DTEXTURE9 m_iParticleTexture; //Particle

};

bool cParticle::SetupPolygon(LPDIRECT3DDEVICE9 lpD3DDev9)
{

	CUSTOMVERTEX sVertices[4] =
	{
		{0.0f,50.0f, 0.0f,0.0f,0.0f,D3DCOLOR_XRGB(0,255,0)},
		{0.0f,0.0f,  0.0f,0.0f,1.0f,D3DCOLOR_XRGB(0,255,0)},
		{50.0f,50.0f,0.0f,1.0f,0.0f,D3DCOLOR_XRGB(0,255,0)},
		{50.0f,0.0f, 0.0f,1.0f,1.0f,D3DCOLOR_XRGB(0,255,0)}
	};

	if(FAILED(lpD3DDev9->CreateVertexBuffer(sizeof(CUSTOMVERTEX)*4,
		0,CUSTOMVERTEX_FVF,D3DPOOL_DEFAULT,&m_iD3DVertBuf,NULL)))
	{
		MessageBox(NULL,"Failed to create vertexbuffer", "Error", MB_OK|MB_ICONSTOP);
		return false;
	}
	
	VOID *pPtr;
	if(FAILED(m_iD3DVertBuf->Lock(0,sizeof(sVertices),(VOID**)&pPtr,0)))
	{
		MessageBox(NULL,"Failed to lock vertexbuffer", "Error", MB_OK|MB_ICONSTOP);
		return false;
	}

	memcpy(pPtr,sVertices, sizeof(sVertices));

	//Create the texture

	if(FAILED(D3DXCreateTextureFromFile(lpD3DDev9 ,"particle.bmp", &m_iParticleTexture)))
	{
		MessageBox(NULL,"Failed to create texture from file", "Error", MB_OK|MB_ICONSTOP);
		return false;
	}

	return true;
}

void cParticle::SetupMovement(LPDIRECT3DDEVICE9 lpD3DDev9)
{
	D3DXMATRIX matWorld;
	D3DXMatrixIdentity(&matWorld);
	lpD3DDev9->SetTransform(D3DTS_WORLD, &matWorld);
}

void cParticle::RenderParticle(LPDIRECT3DDEVICE9 lpD3DDev9)
{
	lpD3DDev9->SetStreamSource(0, m_iD3DVertBuf, 0, sizeof(CUSTOMVERTEX));
	lpD3DDev9->SetFVF(CUSTOMVERTEX_FVF);
	lpD3DDev9->SetTexture(0, m_iParticleTexture);
	lpD3DDev9->DrawPrimitive(D3DPT_TRIANGLESTRIP, 0, 2);
	
}
  

  #define CUSTOMVERTEX_FVF (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)struct CUSTOMVERTEX{    float fX,fY,fZ;    D3DCOLOR color;    float fU,fV;};