#pragma once

#include "Vector.h"

class Particle
{
public:
	Particle(void);
	~Particle(void);

	Vector m_Color;
	bool refrcol;
	int m_ID;
	
private:
	Vector m_Position;
	Vector m_Velocity;

	
	float m_Size;
	float m_D_Size;
public:
	unsigned int m_Time_to_Live; //if 0 live forever
	unsigned int m_Age;

	void setPosition(Vector position);
	void setPosition(double x, double y, double z);
	Vector& getPosition(void);
	void getPosition(double& x, double& y, double& z);
	void setVelocity(Vector velocity){m_Velocity=velocity;}
	void setTimetoLive(unsigned int ttl){m_Time_to_Live=ttl;}
	void setSize(double size){m_Size=size;}
	double getSize(){return m_Size;}

	double m_Distance;
	
	bool operator < (Particle& op){return(m_Distance<op.m_Distance);}
	bool operator > (Particle& op){return(m_Distance>=op.m_Distance);}

	bool LiveMore(unsigned int Dt)
	{
		if(m_Time_to_Live==0)//live forever
			return true;

		m_Age+=Dt;		

		if(m_Age>m_Time_to_Live)
		{
			return false;
		}
		else 
		{			
			return true;
		}
			
	}

	void Refresh(unsigned int Dt)
	{
        Vector dir=m_Velocity*(((double)Dt)/1000);
		m_Position+=dir;
		
		if(m_Time_to_Live!=0)
		{
			float live=float(((float)(m_Age))/((float)(m_Time_to_Live)));				
			m_Color.w=sin(live*M_PI);	
		}
				
	}

	Particle *m_NextParticle;
};