source: golgotha/src/maxtool/sdk_inc/particle.h @ 80 Tweet

/**********************************************************************
 *<
        FILE: particle.h

        DESCRIPTION: Particle system object

        CREATED BY: Rolf Berteig

        HISTORY: 10-18-95

 *> Copyright (c) 1994, All Rights Reserved.
 **********************************************************************/

#ifndef __PARTICLE__
#define __PARTICLE__

#include "export.h"

class ParticleSys;

// Custom particle drawing callback
class CustomParticleDisplay {
        public:
                virtual void DrawParticle(GraphicsWindow *gw,ParticleSys &parts,int i)=0;
        };

class ParticleSys {
        private:
                CustomParticleDisplay *draw;

                void DrawGW(GraphicsWindow *gw,DWORD flags,MarkerType type);

        public:
                Tab<Point3>     points;         // The particles themselves
                Tab<Point3> vels;               // Velocities of each particle (optional)
                Tab<TimeValue> ages;    // Age of each particle (optional)
                float size;                             // World space radius of a particle


                // Draws the particle system into the GW
                DllExport void Render(GraphicsWindow *gw,MarkerType type=POINT_MRKR);
                
                // Hit tests the particle system. Returns TRUE if a particle is hit.
                DllExport BOOL HitTest(GraphicsWindow *gw, HitRegion *hr, 
                        int abortOnHit=FALSE,MarkerType type=POINT_MRKR);

                // Gets bounding box
                DllExport Box3 BoundBox(Matrix3 *tm=NULL);

                // Sets all counts to 0
                DllExport void FreeAll();

                // Sets the size. Flags indicate if optional params should be allocated
                DllExport void SetCount(int c,DWORD flags);

                int Count() {return points.Count();}
                Point3& operator[](int i) {return points[i];}

                // Is particle i alive?
                BOOL Alive(int i) {return ages[i]>=0;}

                // Sets custom draw callback
                void SetCustomDraw(CustomParticleDisplay *d) {draw=d;}
        };

// Flags for SetCount()
#define PARTICLE_VELS   (1<<0)
#define PARTICLE_AGES   (1<<1)


#endif  // __PARTICLE__