ObjectParticleSystemInternal.h

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#pragma once
 
#include <memory>
#include <string>
#include <vector>
 
#include <tdme/tdme.h>
#include <tdme/engine/fwd-tdme.h>
#include <tdme/engine/model/fwd-tdme.h>
#include <tdme/engine/Color4.h>
#include <tdme/engine/primitives/fwd-tdme.h>
#include <tdme/engine/primitives/BoundingBox.h>
#include <tdme/engine/subsystems/particlesystem/fwd-tdme.h>
#include <tdme/engine/subsystems/particlesystem/Particle.h>
#include <tdme/engine/subsystems/particlesystem/ParticleEmitter.h>
#include <tdme/engine/subsystems/particlesystem/ParticleSystemInternal.h>
#include <tdme/engine/subsystems/renderer/fwd-tdme.h>
#include <tdme/engine/subsystems/rendering/fwd-tdme.h>
#include <tdme/engine/Object.h>
#include <tdme/engine/Transform.h>
#include <tdme/math/Matrix4x4.h>
#include <tdme/math/Vector3.h>
#include <tdme/utilities/fwd-tdme.h>
 
using std::string;
using std::unique_ptr;
using std::vector;
 
using tdme::engine::Color4;
using tdme::engine::model::Model;
using tdme::engine::primitives::BoundingBox;
using tdme::engine::subsystems::particlesystem::Particle;
using tdme::engine::subsystems::particlesystem::ParticleEmitter;
using tdme::engine::subsystems::particlesystem::ParticleSystemInternal;
using tdme::engine::subsystems::renderer::Renderer;
using tdme::engine::subsystems::rendering::ObjectBase;
using tdme::engine::subsystems::rendering::ObjectInternal;
using tdme::engine::Engine;
using tdme::engine::Entity;
using tdme::engine::Object;
using tdme::engine::Transform;
using tdme::math::Matrix4x4;
using tdme::math::Vector3;
 
/**
 * Particle system which displays objects as particles
 * @author Andreas Drewke
 */
class tdme::engine::subsystems::particlesystem::ObjectParticleSystemInternal
    : public Transform
    , public virtual ParticleSystemInternal
{
protected:
    Engine* engine { nullptr };
    Renderer* renderer { nullptr };
    string id;
    bool enabled;
    Model* model { nullptr };
    Vector3 objectScale;
    bool autoEmit;
    bool contributesShadows;
    bool receivesShadows;
    vector<Particle> particles;
    vector<Object*> objects;
    vector<Object*> enabledObjects;
    BoundingBox boundingBox;
    BoundingBox worldBoundingBox;
    Matrix4x4 inverseTransformMatrix;
    unique_ptr<ParticleEmitter> emitter;
    bool pickable;
    Color4 effectColorMul;
    Color4 effectColorAdd;
    float particlesToSpawnRemainder;
 
    Transform parentTransform;
    Transform localTransform;
    Matrix4x4 entityTransformMatrix;
 
    /**
     * Update internal
     */
    inline void updateInternal() {
        Vector3 scale;
        entityTransformMatrix.getScale(scale);
        scale.scale(objectScale);
        scale.scale(localTransform.getScale());
        for (auto object: objects) {
            object->setScale(scale);
            object->update();
        }
        inverseTransformMatrix = entityTransformMatrix;
        inverseTransformMatrix.invert();
    }
 
public:
    // forbid class copy
    FORBID_CLASS_COPY(ObjectParticleSystemInternal)
 
    /**
     * Public constructor
     * @param id id
     * @param model model
     * @param scale scale
     * @param autoEmit auto emit
     * @param contributesShadows enable contributes shadows
     * @param receivesShadows enable receives shadows
     * @param maxCount maxCount
     * @param emitter emitter
     */
    ObjectParticleSystemInternal(const string& id, Model* model, const Vector3& scale, bool autoEmit, bool contributesShadows, bool receivesShadows, int32_t maxCount, ParticleEmitter* emitter);
 
    /**
     * Destructor
     */
    virtual ~ObjectParticleSystemInternal();
 
    // overridden methods
    inline ParticleEmitter* getEmitter() override {
        return emitter.get();
    }
 
    const string& getId() override;
    void setEngine(Engine* engine);
    void setRenderer(Renderer* renderer);
    inline bool isEnabled() override {
        return enabled;
    }
    inline bool isActive() override {
        return enabledObjects.size() > 0;
    }
    inline void setEnabled(bool enabled) override {
        this->enabled = enabled;
    }
    inline const Color4& getEffectColorMul() const override {
        return effectColorMul;
    }
    inline void setEffectColorMul(const Color4& effectColorMul) override {
        this->effectColorMul = effectColorMul;
    }
    inline const Color4& getEffectColorAdd() const override {
        return effectColorAdd;
    }
    inline void setEffectColorAdd(const Color4& effectColorAdd) override {
        this->effectColorAdd = effectColorAdd;
    }
    inline bool isPickable() override {
        return pickable;
    }
    inline void setPickable(bool pickable) override {
        this->pickable = pickable;
    }
    inline bool isAutoEmit() override {
        return autoEmit;
    }
    inline void setAutoEmit(bool autoEmit) override {
        this->autoEmit = autoEmit;
    }
 
    /**
     * @return if entity contributes to shadows
     */
    inline bool isContributesShadows() {
        return contributesShadows;
    }
 
    /**
     * Enable/disable contributes shadows
     * @param contributesShadows contributes shadows
     */
    inline void setContributesShadows(bool contributesShadows) {
        this->contributesShadows = contributesShadows;
        for (auto i = 0; i < objects.size(); i++) objects[i]->setContributesShadows(contributesShadows);
    }
 
    /**
     * @return if entity receives shadows
     */
    inline bool isReceivesShadows() {
        return receivesShadows;
    }
 
    /**
     * Enable/disable receives shadows
     * @param receivesShadows receives shadows
     */
    inline void setReceivesShadows(bool receivesShadows) {
        this->receivesShadows = receivesShadows;
        for (auto i = 0; i < objects.size(); i++) objects[i]->setReceivesShadows(receivesShadows);
    }
 
    /**
     * Update transform
     */
    void update() override;
    void setTransform(const Transform& transform) override;
    int emitParticles() override;
    void updateParticles() override;
    void dispose();
    inline const Transform& getParentTransform() {
        return parentTransform;
    }
    inline void setParentTransform(const Transform& transform) {
        parentTransform = transform;
        auto entityTransform = parentTransform * (*this);
        entityTransformMatrix = entityTransform.getTransformMatrix();
        //
        updateInternal();
    }
    inline const Transform& getLocalTransform() override {
        return localTransform;
    }
    inline void setLocalTransform(const Transform& transform) override {
        this->localTransform = transform;
        updateInternal();
    }
 
};