SmokeTemplate.h

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                            Sample © 2017 - Shuriken Studios LLC                          */

#pragma once

namespace Sample
{

    template <typename T>
    class SmokeTemplate : public ParticleTemplate
    {

    public:

        SmokeTemplate()
        {
            GenerateParticles<T>(100); 
            SetParticleLifespan(1);
        }

        virtual ~SmokeTemplate() { }


        virtual void InitializeParticle(Particle *pParticle)
        {
            RotatingParticle *pT = (RotatingParticle *)pParticle;
            assert(pT && "Type of template T is not compatible.");

            ParticleTemplate::InitializeParticle(pT);

            pT->SetScale(Vector2::One * 0.1f);
            pT->SetAlpha(0.125f);

            pT->SetRotation(Math::GetRandomFloat() * Math::PI * 2);
            pT->SetRotationVelocity(Math::GetRandomFloat() * 0.2f - 0.1f);

            pT->SetPosition(pT->GetPosition() + Vector2::GetRandom(true) * 2);
        }


        virtual void UpdateParticle(Particle *pParticle, const GameTime *pGameTime)
        {
            RotatingParticle *pT = (RotatingParticle *)pParticle;
            assert(pT && "Type of template T is not compatible.");

            float value = pT->GetInterpolationValue();
            float scale = (1 - value) * 0.25f + 0.1f;
            pT->SetScale(Vector2::One * scale);
            pT->SetAlpha(value * 0.125f);

            float rotation = pT->GetRotation() + pT->GetRotationVelocity();

            pT->SetRotation(rotation);
        }

        virtual Particle *GetInactiveParticle()
        {
            return GetInactiveParticleOfType<T>();
        }
    };
}