ParticleSystem.h

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#ifndef _PARTICLESYSTEM_H_
#define _PARTICLESYSTEM_H_

//#pragma once

#include "Particle.h"
#include "Camera.h"
#include "../Common/OS/Windows.h"
//#include <windows.h>
#include "../Math/Math.h"

#define MAX_PARTICLES   1000

#define MIN_SPEED               0.0f
#define MIN_LIFETIME    0.1f
#define MIN_SPREAD              0.01f
#define MIN_EMISSION    1.0f
#define MIN_SIZE                0.5f
#define MIN_GRAVITY             -5.0f
#define MIN_ALPHA               0.0f

#define MAX_SPEED               250.0f
#define MAX_LIFETIME    10.0f
#define MAX_SPREAD              180.0f
#define MAX_EMISSION    1000.0f
#define MAX_SIZE                10.0f
#define MAX_GRAVITY             5.0f
#define MAX_ALPHA               1.0f

#define PARTICLESYSTEM_SUN              9
#define PARTICLESYSTEM_SPAWN    8

//#define PARTICLE_MAX_TEXTURES 5
#define MAX_PRESETS             9


//#define RANDOM_NUM    (((float)rand()-(float)rand())/RAND_MAX)        //(float)rand()
//#define Clamp(x, min, max) x=(x<min ? min : (x<max? x : max));

class ParticleSystem {
        public:
                ParticleSystem();
                ~ParticleSystem();
                bool update(float dTime, bool absoluteTime = false);
                void move(Vec3 location);
                Vec3 getPos() { return m_location; }
                void getLocation(Vec3 &location);
                unsigned int numParticles();
                void setRenderer(void *renderer);
                void loadPreset(unsigned int preset);

                bool isMoving();
                bool isColliding();
                bool isAttractive();

                void start() { m_alive = true; }
                void die() { m_alive = false; }
                bool isAlive() { return m_alive; }

                virtual void draw() = 0;
                virtual bool drawAndUpdate(Camera *camera, float dTime, bool absoluteTime = false, bool billboard = true) = 0;

        public:
                void* m_renderer;

                int m_textureID;
                unsigned int m_particlesPerSec;
                unsigned int m_particlesAlive;

                Vec3 m_prevLocation;
                Vec3 m_location;
                Vec3 m_velocity;
                Vec3 m_direction;
                Vec3 m_baseLocation;

                float m_gravityStart;
                float m_gravityVar;
                float m_gravityEnd;

                float m_sizeStart;
                float m_sizeVar;
                float m_sizeEnd;

                float m_alphaStart;
                float m_alphaVar;
                float m_alphaEnd;

                float m_speed;
                float m_speedVar;

                float m_life;
                float m_lifeVar;

                Vec4 m_colorStart;
                Vec4 m_colorVar;
                Vec4 m_colorEnd;

                float m_theta;

                float m_age;

                float m_timeLastUpdate;
                float m_emissionResidue;

                bool m_isMoving;
                bool m_isAttractive;
                bool m_isSuppressed;
                bool m_isColliding;

                bool m_alive;

                Particle m_particles[MAX_PARTICLES];
};

#endif

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