struct IGroundEffect {
  enum EGroundEffectFlags {
    eGEF_AlignToGround = (1<<0),
    eGEF_AlignToOcean = (1<<1),
    eGEF_PrimeEffect = (1<<2),
    eGEF_StickOnGround = (1<<3)
  };
};

IEffectSystem.h

enum EGroundEffectFlags {
  eGEF_AlignToGround = (1<<0),
  eGEF_AlignToOcean = (1<<1),
  eGEF_PrimeEffect = (1<<2),
  eGEF_StickOnGround = (1<<3)
};

IEffectSystem.h

virtual ~IGroundEffect();

virtual int GetFlags() const = 0;

virtual void SetBaseScale(float sizeScale, float countScale, float speedScale = 1.f) = 0;

set additional scale parameters, if user control is needed these are always multiplied by height scale parameters

virtual void SetFlags(int flags) = 0;

virtual void SetHeight(float height) = 0;

set maximum height

virtual void SetHeightScale(float sizeScale, float countScale) = 0;

use if effect should be scaled dependending on height ratio. scale(zero height) = 1,1 scale(max height) = sizeScale,countScale use e.g. sizeScale=0,countScale=0 to fade it out completely at max height

virtual void SetInteraction(const char* name) = 0;

if an interaction name is set, the particle effect is looked up in MaterialEffects. if not, one can still call SetParticleEffect by herself

virtual void SetInterpolation(float speed) = 0;

set interpolation speed for size scale speed 0 means no interpolation

virtual bool SetParticleEffect(const char* name) = 0;

virtual void Stop(bool stop) = 0;

stop == true will keep the effect on hold until a stop == false is set.

virtual void Update() = 0;

must be called by user