/// <summary>
/// Generate a ripple at a particular position.
/// </summary>
/// <param name="position">Ripple position.</param>
/// <param name="disturbanceFactor">Range: [0..1]: The disturbance is linearly interpolated between the minimum disturbance and the maximum disturbance by this factor.</param>
/// <param name="pullWaterDown">Pull water down or up?</param>
/// <param name="playSoundEffect">Play the sound effect.</param>
/// <param name="playParticleEffect">Play the particle effect.</param>
/// <param name="smooth">Disturb neighbor vertices to create a smoother ripple (wave).</param>
/// <param name="smoothingFactor">Range: [0..1]: The amount of disturbance to apply to neighbor vertices.</param>
public void GenerateRipple(Vector2 position, float disturbanceFactor, bool pullWaterDown, bool playSoundEffect, bool playParticleEffect, bool smooth, float smoothingFactor = 0.5f)
{
float xPosition = _mainModule.TransformWorldToLocal(position).x;
float leftBoundary = _simulationModule.LeftBoundary;
float rightBoundary = _simulationModule.RightBoundary;
int surfaceVerticesCount = _meshModule.SurfaceVerticesCount;
int startIndex = _simulationModule.IsUsingCustomBoundaries ? 1 : 0;
int endIndex = _simulationModule.IsUsingCustomBoundaries ? surfaceVerticesCount - 2 : surfaceVerticesCount - 1;
if (xPosition < leftBoundary || xPosition > rightBoundary)
{
return;
}
float disturbance = Mathf.Lerp(_minimumDisturbance, _maximumDisturbance, Mathf.Clamp01(disturbanceFactor));
float velocity = (pullWaterDown ? -1f : 1f) * _simulationModule.StiffnessSquareRoot * disturbance;
float delta = (xPosition - leftBoundary) * _meshModule.SubdivisionsPerUnit;
int nearestVertexIndex = startIndex + Mathf.RoundToInt(delta);
var velocities = _simulationModule.Velocities;
velocities[nearestVertexIndex] += velocity;
if (smooth)
{
smoothingFactor = Mathf.Clamp01(smoothingFactor);
float smoothedVelocity = velocity * smoothingFactor;
int previousNearestIndex = nearestVertexIndex - 1;
if (previousNearestIndex >= startIndex)
{
velocities[previousNearestIndex] += smoothedVelocity;
}
int nextNearestIndex = nearestVertexIndex + 1;
if (nextNearestIndex <= endIndex)
{
velocities[nextNearestIndex] += smoothedVelocity;
}
}
_simulationModule.MarkVelocitiesArrayAsChanged();
Vector3 spawnPosition = _mainModule.TransformLocalToWorld(new Vector2(xPosition, _mainModule.Height * 0.5f));
if (playParticleEffect)
{
_particleEffect.PlayParticleEffect(spawnPosition);
}
if (playSoundEffect)
{
_soundEffect.PlaySoundEffect(spawnPosition, disturbanceFactor);
}
}
/// <summary>
/// Generate a ripple at a particular position.
/// </summary>
/// <param name="position">Ripple position.</param>
/// <param name="disturbanceFactor">Range: [0..1]: The disturbance is linearly interpolated between the minimum disturbance and the maximum disturbance by this factor.</param>
/// <param name="pullWaterDown">Pull water down or up?</param>
/// <param name="playSoundEffect">Play the sound effect.</param>
/// <param name="playParticleEffect">Play the particle effect.</param>
/// <param name="smoothRipple">Disturb neighbor vertices to create a smoother ripple (wave).</param>
/// <param name="smoothingFactor">Range: [0..1]: The amount of disturbance to apply to neighbor vertices.</param>
public void GenerateRipple(Vector2 position, float disturbanceFactor, bool pullWaterDown, bool playSoundEffect, bool playParticleEffect, bool smoothRipple, float smoothingFactor = 0.5f)
{
float xPosition = _mainModule.TransformPointWorldToLocal(position).x;
float leftBoundary = _simulationModule.LeftBoundary;
float rightBoundary = _simulationModule.RightBoundary;
int surfaceVertexCount = _meshModule.SurfaceVerticesCount;
int leftMostSurfaceVertexIndex = _simulationModule.IsUsingCustomBoundaries ? 1 : 0;
int rightMostSurfaceVertexIndex = _simulationModule.IsUsingCustomBoundaries ? surfaceVertexCount - 2 : surfaceVertexCount - 1;
if (xPosition < leftBoundary || xPosition > rightBoundary)
{
return;
}
float disturbance = (pullWaterDown ? -1f : 1f) * Mathf.Lerp(_minimumDisturbance, _maximumDisturbance, Mathf.Clamp01(disturbanceFactor));
float subdivisionsPerUnit = (surfaceVertexCount - (_simulationModule.IsUsingCustomBoundaries ? 3 : 1)) / (rightBoundary - leftBoundary);
float delta = (xPosition - leftBoundary) * subdivisionsPerUnit;
int nearestVertexIndex = leftMostSurfaceVertexIndex + Mathf.RoundToInt(delta);
_simulationModule.DisturbSurfaceVertex(nearestVertexIndex, disturbance);
if (smoothRipple)
{
smoothingFactor = Mathf.Clamp01(smoothingFactor);
float smoothedDisturbance = disturbance * smoothingFactor;
int previousNearestIndex = nearestVertexIndex - 1;
if (previousNearestIndex >= leftMostSurfaceVertexIndex)
{
_simulationModule.DisturbSurfaceVertex(previousNearestIndex, smoothedDisturbance);
}
int nextNearestIndex = nearestVertexIndex + 1;
if (nextNearestIndex <= rightMostSurfaceVertexIndex)
{
_simulationModule.DisturbSurfaceVertex(nextNearestIndex, smoothedDisturbance);
}
}
Vector3 spawnPosition = _mainModule.TransformPointLocalToWorld(new Vector3(xPosition, _mainModule.Height * 0.5f));
if (playParticleEffect)
{
_particleEffect.PlayParticleEffect(spawnPosition);
}
if (playSoundEffect)
{
_soundEffect.PlaySoundEffect(spawnPosition, disturbanceFactor);
}
}
internal void PhysicsUpdate(float deltaTime)
{
if (!_isActive || (!_updateWhenOffscreen && !_mainModule.IsVisible))
{
return;
}
_elapsedTime += deltaTime;
if (_elapsedTime >= _currentInterval)
{
if (_randomizeRipplesSourcePositions)
{
RandomizeIndices();
}
int surfaceVerticesCount = _meshModule.SurfaceVerticesCount;
int startIndex = _simulationModule.IsUsingCustomBoundaries ? 1 : 0;
int endIndex = _simulationModule.IsUsingCustomBoundaries ? surfaceVerticesCount - 2 : surfaceVerticesCount - 1;
Vector3[] vertices = _meshModule.Vertices;
float[] velocities = _simulationModule.Velocities;
bool playSoundEffect = _soundEffect.IsActive;
bool playParticleEffect = _particleEffect.IsActive;
for (int i = 0, imax = _ripplesSourcesIndices.Count; i < imax; i++)
{
int index = _ripplesSourcesIndices[i];
float disturbance = _randomizeDisturbance ? Random.Range(_minimumDisturbance, _maximumDisturbance) : _disturbance;
disturbance *= _simulationModule.StiffnessSquareRoot;
velocities[index] -= disturbance;
if (_smoothRipples)
{
float smoothedDisturbance = disturbance * _smoothingFactor;
int previousIndex, nextIndex;
previousIndex = index - 1;
nextIndex = index + 1;
if (previousIndex >= startIndex)
{
velocities[previousIndex] -= smoothedDisturbance;
}
if (nextIndex <= endIndex)
{
velocities[nextIndex] -= smoothedDisturbance;
}
}
#if UNITY_EDITOR
if (!Application.isPlaying)
{
continue;
}
#endif
if (_soundEffect.IsActive || _particleEffect.IsActive)
{
Vector3 spawnPosition = _mainModule.TransformPointLocalToWorld(vertices[index]);
if (playParticleEffect)
{
_particleEffect.PlayParticleEffect(spawnPosition);
}
if (playSoundEffect)
{
float disturbanceFactor = Mathf.InverseLerp(_minimumDisturbance, _maximumDisturbance, disturbance);
_soundEffect.PlaySoundEffect(spawnPosition, disturbanceFactor);
}
}
}
_currentInterval = _randomizeTimeInterval ? Random.Range(_minimumTimeInterval, _maximumTimeInterval) : _timeInterval;
_elapsedTime = 0f;
_simulationModule.MarkVelocitiesArrayAsChanged();
}
}