WindField.h

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#pragma once
 
#include <cstdint>
#include <glm/vec3.hpp>
 
namespace Engine::World
{
    struct WindFieldConfig
    {
        bool enabled = true;
 
        float cellSize = 62.0f;
        float pocketDensity = 0.65f;
        float radiusScale = 1.0f;
        float windSpeed = 9.0f;
 
        float globalDirectionRadians = 0.0f;
        float globalDirectionRotationSpeed = 0.015f;
        float regionalBiasStrength = 0.35f;
        float coneHalfAngleRadians = 0.78539816339f;
 
        float verticalRadius = 28.0f;
        float verticalWindSpeed = 4.5f;
        float verticalWindBias = 0.12f;
        float visualizationRadius = 140.0f;
 
        float windAccelerationScale = 0.45f;
        float maxWindAddedSpeed = 10.0f;
        float windDiminishingSpeed = 6.0f;
        float headwindPenaltyScale = 0.5f;
 
        bool debugDraw = true;
        bool debugDrawBorders = true;
        bool debugDrawArrows = true;
        float debugArrowSpacing = 9.0f;
        float debugArrowScale = 0.28f;
    };

    struct WindSample
    {
        glm::vec3 velocity{ 0.0f };
        float strength = 0.0f;
        uint32_t pocketId = 0u;
        bool isInsidePocket = false;
    };

    class WindField
    {
    public:
        [[nodiscard]] WindSample sample( const glm::vec3 & worldPos, float timeSeconds ) const;
 
        [[nodiscard]] const WindFieldConfig & getConfig() const { return config_; }
        [[nodiscard]] WindFieldConfig & getConfig() { return config_; }
        void setConfig( const WindFieldConfig & config ) { config_ = config; }
 
        void drawDebugAround( const glm::vec3 & center, float timeSeconds ) const;
 
    private:
        WindFieldConfig config_;
    };
}  // namespace Engine::World