www.pudn.com > cool_fei.rar > Particles.h

#ifndef _PARTICLES_H_ 
#define _PARTICLES_H_ 
 
#include  
#include "d3d9.h" 
#include "d3dx9.h" 
#include "Direct3D.h" 
 
// Particle emitter types 
#define EMITTER_CLOUD       0 
#define EMITTER_TREE        1 
#define EMITTER_PEOPLE      2 
 
// Particle types and # of particle types 
#define PARTICLE_SMOKE      0 
#define PARTICLE_TREE1      1 
#define PARTICLE_TREE2      2 
#define PARTICLE_TREE3      3 
#define PARTICLE_PEOPLE1    4 
#define PARTICLE_PEOPLE2    5 
#define NUM_PARTICLE_TYPES  6 
 
// Vertex structure for vertex-shader particles 
typedef struct { 
  D3DXVECTOR3 vecPos;     // Coordinates of particle 
  D3DXVECTOR2 vecOffset;  // Corner vertex offset coordinates 
  DWORD       Diffuse;    // Diffuse color of particle 
  float       u, v;       // Texture coordinates 
} sShaderVertex; 
 
// Particle container class 
class cParticle 
{ 
  public: 
    DWORD       m_Type;         // Type of particle 
 
    D3DXVECTOR3 m_vecPos;       // Position of particle 
    D3DXVECTOR3 m_vecVelocity;  // Velocity of particle 
 
    DWORD       m_Life;         // Life of particle in ms 
    float       m_Size;         // Size of particle 
 
    DWORD       m_Color;        // Diffuse color of particle 
 
    cParticle *m_Prev;          // Prev particle in linked list 
    cParticle *m_Next;          // Next particle in linked list 
 
  public: 
    // Constructor and destructor to clear/release data 
    cParticle()  { m_Prev = NULL; m_Next = NULL;                } 
    ~cParticle() { delete m_Next; m_Next = NULL; m_Prev = NULL; } 
}; 
 
// Particle emitter class 
class cParticleEmitter 
{ 
  protected: 
    IDirect3DDevice9       *m_pDevice;       // Parent 3-D device 
     
    DWORD                   m_EmitterType;   // Type of emitter 
 
    IDirect3DVertexBuffer9 *m_VB;            // Particles' vertex buffer 
    IDirect3DIndexBuffer9  *m_IB;            // Particles' index buffer 
 
    D3DXVECTOR3             m_vecPosition;   // Position of emitter 
    DWORD                   m_NumParticles;  // Max # particles in buffer 
    cParticle              *m_Particles;     // Particle list 
 
    static DWORD            m_RefCount;      // Class reference count 
 
    static IDirect3DVertexShader9 *m_pShader;    // Vertex shader 
    static IDirect3DVertexDeclaration9 *m_pDecl; // Vertex decl 
    static IDirect3DTexture9 **m_pTextures;      // Textures 
 
  public: 
    cParticleEmitter(); 
    ~cParticleEmitter(); 
 
    BOOL Create(IDirect3DDevice9 *pDevice,  
                D3DXVECTOR3 *vecPosition, 
                DWORD EmitterType,                               
                DWORD NumParticlesPerBuffer = 32); 
    void Free(); 
 
    void Add(DWORD Type, D3DXVECTOR3 *vecPos, float Size,  
             DWORD Color, DWORD Life,  
             D3DXVECTOR3 *vecVelocity); 
    void ClearAll(); 
    void Process(DWORD Elapsed); 
 
    // Functions to prepare for particle rendering, wrap up rendering, 
    // and to render a batch of particles. 
    BOOL Begin(D3DXMATRIX *matView, D3DXMATRIX *matProj); 
    void End(); 
    void Render(); 
 
    // Specialized functions for various particle types 
    void HandleSmoke(D3DXVECTOR3 *vecPos, DWORD Elapsed); 
    void HandleDucking(D3DXVECTOR3 *vecPos); 
}; 
 
#endif