PointsParticleSystemInternal.h

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#pragma once
 
#include <memory>
#include <string>
#include <vector>
 
#include <tdme/tdme.h>
#include <tdme/engine/fileio/textures/fwd-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/Transform.h>
#include <tdme/math/Math.h>
#include <tdme/math/Matrix4x4.h>
#include <tdme/math/Vector3.h>
 
using std::string;
using std::unique_ptr;
using std::vector;
 
using tdme::engine::Texture;
using tdme::engine::Color4;
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::TransparentRenderPointsPool;
using tdme::engine::Engine;
using tdme::engine::Transform;
using tdme::math::Math;
using tdme::math::Matrix4x4;
using tdme::math::Vector3;
 
/**
 * Points particle system
 * @author Andreas Drewke
 */
class tdme::engine::subsystems::particlesystem::PointsParticleSystemInternal
    : public Transform
    , public virtual ParticleSystemInternal
{
 
protected:
    string id;
    Engine* engine { nullptr };
    Renderer* renderer { nullptr };
    bool autoEmit;
    bool enabled;
    bool active;
    unique_ptr<ParticleEmitter> emitter;
    vector<Particle> particles;
    int32_t maxPoints;
    float pointSize;
    float pointSizeScale;
    Texture* texture { nullptr };
    int32_t textureHorizontalSprites;
    int32_t textureVerticalSprites;
    float fps;
    unique_ptr<TransparentRenderPointsPool> pointsRenderPool;
 
    BoundingBox boundingBox;
    BoundingBox worldBoundingBox;
    Transform inverseTransform;
    Color4 effectColorMul;
    Color4 effectColorAdd;
    bool pickable;
    float particlesToSpawnRemainder;
 
    Transform parentTransform;
    Transform localTransform;
    Matrix4x4 entityTransformMatrix;
 
    /**
     * Update bounding volume
     */
    inline void updateInternal() {
        Vector3 scale;
        entityTransformMatrix.getScale(scale);
        pointSizeScale = Math::max(scale.getX(), Math::max(scale.getY(), scale.getZ()));
        pointSizeScale*= Math::max(localTransform.getScale().getX(), Math::max(localTransform.getScale().getY(), localTransform.getScale().getZ()));
        worldBoundingBox.fromBoundingVolumeWithTransformMatrix(&boundingBox, entityTransformMatrix);
        worldBoundingBox.getMin().sub(0.05f); // scale a bit up to make picking work better
        worldBoundingBox.getMax().add(0.05f); // same here
        worldBoundingBox.update();
    }
 
public:
    // forbid class copy
    FORBID_CLASS_COPY(PointsParticleSystemInternal)
 
    /**
     * Public constructor
     * @param id id
     * @param emitter emitter
     * @param maxPoints max points
     * @param pointSize point size
     * @param autoEmit auto emit
     * @param texture texture
     * @param textureHorizonalSprites texture horizonal sprites
     * @param textureVerticalSprites texture vertical sprites
     * @param fps frames per seconds
     */
    PointsParticleSystemInternal(const string& id, ParticleEmitter* emitter, int32_t maxPoints, float pointSize, bool autoEmit, Texture* texture = nullptr, int32_t textureHorizontalSprites = 1, int32_t textureVerticalSprites = 1, float fps = 10.0f);
 
    /**
     * Destructor
     */
    virtual ~PointsParticleSystemInternal();
 
    /**
     * Initialize
     */
    void initialize();
 
    // overridden methods
    inline ParticleEmitter* getEmitter() override {
        return emitter.get();
    }
 
    inline const string& getId() override {
        return id;
    }
    inline void setRenderer(Renderer* renderer) {
        this->renderer = renderer;
    }
    inline void setEngine(Engine* engine) {
        this->engine = engine;
    }
    inline bool isEnabled() override {
        return enabled;
    }
    inline bool isActive() override {
        return active;
    }
    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 false;
    }
 
    /**
     * Enable/disable contributes shadows
     * @param contributesShadows contributes shadows
     */
    inline void setContributesShadows(bool contributesShadows) {
        //
    }
 
    /**
     * @return if entity receives shadows
     */
    inline bool isReceivesShadows() {
        return false;
    }
 
    /**
     * Enable/disable receives shadows
     * @param receivesShadows receives shadows
     */
    inline void setReceivesShadows(bool receivesShadows) {
        //
    }
 
    /**
     * @return point size
     */
    inline float getPointSize() {
        return pointSize * pointSizeScale;
    }
 
    /**
     * @return texture
     */
    inline Texture* getTexture() {
        return texture;
    }
 
    /**
     * @return texture horizontal sprites
     */
    inline int32_t getTextureHorizontalSprites(){
        return textureHorizontalSprites;
    }
 
    /**
     * @return texture vertical sprites
     */
    inline int32_t getTextureVerticalSprites(){
        return textureVerticalSprites;
    }
 
    /**
     * Update transform
     */
    void update() override;
    void setTransform(const Transform& transform) override;
    void updateParticles() override;
    void dispose();
    int emitParticles() override;
    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();
    }
 
    /**
     * @return render points pool
     */
    inline TransparentRenderPointsPool* getRenderPointsPool() {
        return pointsRenderPool.get();
    }
 
};