private void DrawSource(WaterOnTerrainSFX.Source source, Matrix4x4 worldToScreenMatrix)
{
Vector3 v = this.EventPositionForLocalPosition(source.localPosition);
v = worldToScreenMatrix.MultiplyPoint3x4(new Vector3(v.x, v.z));
this.DrawTexture(v, WaterOnTerrainSFX.sourceTexture);
v = source.eventPosition;
v = worldToScreenMatrix.MultiplyPoint3x4(new Vector3(v.x, v.z));
this.DrawTexture(v, WaterOnTerrainSFX.eventTexture);
}
private void StopSource(int index)
{
if (index >= 0 && index < this.sources.Count)
{
WaterOnTerrainSFX.Source source = this.sources[index];
this.sources.RemoveAt(index);
source.Stop();
this.sourcePool.Push(source);
}
}
private float ScoreForSource(WaterOnTerrainSFX.IntVector position, WaterOnTerrainSFX.Source source)
{
float num = 0f;
if (WaterOnTerrainSFX.IsWithinSampleGrid(position))
{
num = this.sampleGrid[position.x, position.y].score;
for (int i = 0; i < this.sources.Count; i++)
{
if (this.sources[i] != source)
{
float t = (float)((position - this.sources[i].localPosition).squareMagnitude / 5);
num *= Mathf.Lerp(0.1f, 1f, t);
}
}
}
return(num);
}
private void UpdateSources()
{
float num = this.maximumScore / 5f;
int i = 0;
while (i < this.sources.Count)
{
WaterOnTerrainSFX.Source source = this.sources[i];
WaterOnTerrainSFX.IntVector localPosition = source.localPosition;
float num2 = this.ScoreForSource(source.localPosition, source);
for (int j = 0; j < WaterOnTerrainSFX.NEIGHBOURS.Length; j++)
{
WaterOnTerrainSFX.IntVector intVector = source.localPosition + WaterOnTerrainSFX.NEIGHBOURS[j];
float num3 = this.ScoreForSource(intVector, source);
if (num3 > num2)
{
num2 = num3;
localPosition = intVector;
}
}
if (num2 > num)
{
source.localPosition = localPosition;
source.SetGradient(this.GradientForLocalPosition(source.localPosition));
i++;
}
else
{
this.StopSource(i);
}
}
if (!this.centreSource.IsPlaying())
{
this.centreSource.Start(this.eventDescription, this.gradientParameterIndex, this.wetnessParameterIndex, WaterOnTerrainSFX.SAMPLE_GRID_CENTRE, base.transform.position, this.GradientForLocalPosition(WaterOnTerrainSFX.SAMPLE_GRID_CENTRE));
}
while (this.sourcePool.Count > 0)
{
WaterOnTerrainSFX.IntVector intVector2 = new WaterOnTerrainSFX.IntVector(0, 0);
float num4 = num;
WaterOnTerrainSFX.IntVector intVector3;
intVector3.x = 0;
while (intVector3.x < 21)
{
intVector3.y = 0;
while (intVector3.y < 21)
{
float num5 = this.ScoreForSource(intVector3, null);
if (num5 > num4)
{
num4 = num5;
intVector2 = intVector3;
}
intVector3.y++;
}
intVector3.x++;
}
if (num4 <= num)
{
break;
}
WaterOnTerrainSFX.Source source2 = this.sourcePool.Pop();
source2.Start(this.eventDescription, this.gradientParameterIndex, this.wetnessParameterIndex, intVector2, this.EventPositionForLocalPosition(intVector2), this.GradientForLocalPosition(intVector2));
this.sources.Add(source2);
}
float distance = Time.deltaTime * this.sourceSpeed;
this.centreSource.UpdateEvent(base.transform.position, float.MaxValue, WaterOnTerrainSFX.Wetness);
for (int k = 0; k < this.sources.Count; k++)
{
WaterOnTerrainSFX.Source source3 = this.sources[k];
source3.UpdateEvent(this.EventPositionForLocalPosition(source3.localPosition), distance, WaterOnTerrainSFX.Wetness);
}
}
private void UpdateSampleGrid()
{
WaterOnTerrainSFX.IntVector intVector = new WaterOnTerrainSFX.IntVector(Mathf.FloorToInt(base.transform.position.x / this.gridCellSize), Mathf.FloorToInt(base.transform.position.z / this.gridCellSize));
if (intVector != this.gridPosition)
{
WaterOnTerrainSFX.IntVector intVector2 = intVector - this.gridPosition;
if (Math.Abs(intVector2.x) < 21 && Math.Abs(intVector2.y) < 21)
{
this.MoveSampleGridEntries(-intVector2);
WaterOnTerrainSFX.IntVector intVector3;
WaterOnTerrainSFX.IntVector intVector4;
if (intVector2.x < 0)
{
intVector3.x = 0;
intVector4.x = -intVector2.x;
}
else
{
intVector3.x = 21 - intVector2.x;
intVector4.x = 21;
}
if (intVector2.y < 0)
{
intVector3.y = 0;
intVector4.y = -intVector2.y;
}
else
{
intVector3.y = 21 - intVector2.y;
intVector4.y = 21;
}
this.CacheGradients(intVector, new WaterOnTerrainSFX.IntVector(0, intVector3.y), new WaterOnTerrainSFX.IntVector(21, intVector4.y));
if (intVector3.y > 0)
{
this.CacheGradients(intVector, new WaterOnTerrainSFX.IntVector(intVector3.x, 0), new WaterOnTerrainSFX.IntVector(intVector4.x, intVector3.y));
}
else
{
this.CacheGradients(intVector, new WaterOnTerrainSFX.IntVector(intVector3.x, intVector4.y), new WaterOnTerrainSFX.IntVector(intVector4.x, 21));
}
}
else
{
this.CacheGradients(intVector, new WaterOnTerrainSFX.IntVector(0, 0), new WaterOnTerrainSFX.IntVector(21, 21));
}
this.CalculateSampleGridScores();
int i = 0;
while (i < this.sources.Count)
{
WaterOnTerrainSFX.Source source = this.sources[i];
this.sources[i].localPosition -= intVector2;
int squareMagnitude = (source.localPosition - WaterOnTerrainSFX.SAMPLE_GRID_CENTRE).squareMagnitude;
if (!WaterOnTerrainSFX.IsWithinSampleGrid(source.localPosition) || squareMagnitude > 100)
{
this.StopSource(i);
}
else
{
i++;
}
}
this.gridPosition = intVector;
}
}
