kparticle.h

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#ifndef KPARTICLE_H
#define KPARTICLE_H
 
#include "kexport.h"
#include "kdatatype.h"
 
#include <vector>
 
namespace kemena
{
    struct KEMENA3D_API kParticle
    {
        kString uuid;                       
        kString name     = "Particle System"; 
        bool    isActive = true;            
        bool    looping  = true;            
 
        // Emitter
        int   maxParticles = 100;           
        float emissionRate = 10.0f;  
        float lifetime     = 2.0f;   
        float gravityScale = 1.0f;          
 
        // Velocity
        kVec3 startVelocity    = kVec3(0.0f, 1.0f, 0.0f); 
        float startSpeed       = 1.0f;                    
        kVec3 velocityVariance = kVec3(0.1f, 0.1f, 0.1f); 
 
        // Visual
        kVec4 colorStart = kVec4(1.0f, 1.0f, 1.0f, 1.0f); 
        kVec4 colorEnd   = kVec4(1.0f, 1.0f, 1.0f, 0.0f); 
        float sizeStart  = 0.1f;                          
        float sizeEnd    = 0.0f;                          
    };

    class KEMENA3D_API kParticleManager
    {
    public:
        kParticleManager()  = default;

        ~kParticleManager() = default;

        void update(float dt);

        void addEmitter(kParticle *particle);

        void removeEmitter(const kString &uuid);
 
    private:
        std::vector<kParticle *> emitters;
    };
 
} // namespace kemena
 
#endif // KPARTICLE_H