//Calculate the line from start to destination and divide into several intensity points based on fading speed and travelling speed
private void UpdateMapPoint(SoundSegment segment, float steps, bool includeDestination)
{
List <Vector3> positions = new List <Vector3>();
List <float> intensities = new List <float>();
for (int k = 0; k < steps; k++)
{
// operation for each in between sound points
float length = k * system.stepDistance;
float intensity = (segment._volume - system.fadingSpeed * k);
Vector3 position = segment._ray.origin + segment._ray.direction * length;
positions.Add(position);
intensities.Add(intensity);
}
//map it to the grid based map in the system controller
system.MapSoundData(positions, intensities, segment, gameObject);
// this is for dynamically adjust the length ray indicator, visual representation use only
float intensityAtDestination = (segment._volume - system.fadingSpeed * steps) + 0.1f;
if (includeDestination)
{
float length = steps * system.stepDistance;
}
}
public void AddNewSoundPoint(float intensity, SoundSegment seg, string sourceName)
{
//filter the sound by type
//if under the source's name there is no entry, we create one
//else we add the intensity to the new list
//unifypointdata averages the intensity from the same source and segment
if (!sources.ContainsKey(seg._type))
{
sources.Add(seg._type, new List <SoundMapPointData>());
SoundMapPointData data = new SoundMapPointData(seg._type, seg._id, sourceName);
data.UnifyPointData(intensity);
sources[seg._type].Add(data);
}
else
{
//try to find the entry that has the same segment id
for (int i = 0; i < sources[seg._type].Count; i++)
{
if (sources[seg._type][i].segmentId == seg._id && sources[seg._type][i].sourceName == sourceName)
{
sources[seg._type][i].UnifyPointData(intensity);
return;
}
}
//no match for this id
SoundMapPointData data = new SoundMapPointData(seg._type, seg._id, sourceName);
data.UnifyPointData(intensity);
sources[seg._type].Add(data);
}
}
private void ReflectSoundRay(SoundSegment segment, float remainVol, Ray ray, Vector3 direction, RaycastHit hit)
{
Vector3 reflectVec = Vector3.Reflect(ray.direction, hit.normal);
//calculate remain volume at this point
float distance = hit.distance;
float nextSteps = distance / system.stepDistance;
float remain = (remainVol - nextSteps * system.fadingSpeed) * system.absorbtionRate;
//Debug.Log("ray " + ray.origin + " " + hit.point);
if (drawDebugLine)
{
Debug.DrawRay(ray.origin, direction * hit.distance, Color.blue, 0.1f);
}
UpdateMapPoint(segment, nextSteps, false);
//keep reflecting, treat it as a new sound
//soundSegmentQueue.Enqueue(new SoundSegment(segment._id + 1, hit.point, reflectVec, remain, segment._type, segment._reflectNum + 1));
soundSegmentQueue_nextFrame.Enqueue(new SoundSegment(segment._id + 1, hit.point, reflectVec, remain, segment._type, segment._reflectNum + 1));
}
public void Calculate()
{
if (soundQueue.Count <= 0 && soundSegmentQueue.Count <= 0)
{
return;
}
if (segmentId > 10000)
{
segmentId = 0;
} //reset segment id
//segmentId = 0;
diffractedSegments.Clear();
mapKeyPoints = new List <MapPointData>();
soundSegmentQueue_nextFrame = new Queue <SoundSegment>();
int numOfSoundForOneRound = soundQueue.Count;
for (int q = 0; q < numOfSoundForOneRound; q++)
{
Sound sound = soundQueue.Dequeue();
if (!sound.IsOver())
{
soundQueue.Enqueue(sound);
float volume = sound.volume; // rayFrequency;
float steps = sound.volume / (system.fadingSpeed + float.Epsilon);
float spreadDistance = steps * system.stepDistance;
//mapKeyPoints.Add(new MapPointData(sound.sid, sound.producedPos, sound.volume, fadingSpeed, stepDistance));
Transform target = sound.producer.transform;
Vector3 origin = target.position;
Vector3 forward = target.forward;
//rotate clockwise and counter-clockwise to find the bondary vectors
float halfRange = sound.range / 2;
Vector3 bound_CCW = UtilityMethod.RotateAroundY(halfRange, forward);
Vector3 bound_CW = UtilityMethod.RotateAroundY(-halfRange, forward);
//Debug.DrawRay(agent.transform.position, bound_CCW * 10, Color.cyan);
//Debug.DrawRay(agent.transform.position, bound_CW * 10, Color.green);
float delta = 360f / rayFrequency;
int rayNum = (int)(sound.range / delta);
Vector3 dir = bound_CW;
for (int i = 0; i <= rayNum; i++) // <= because we enqueue the segement first then increment the angle, so we need extra 1 time for the last direction
{
//raycast
soundSegmentQueue.Enqueue(new SoundSegment(segmentId, origin, dir, sound.volume, sound.type, 0));
dir = UtilityMethod.RotateAroundY(delta, dir);
}
}
}
while (soundSegmentQueue.Count > 0)
{
SoundSegment segment = soundSegmentQueue.Dequeue();
RayCastFromPoint(segment);
}
soundSegmentQueue = soundSegmentQueue_nextFrame;
}
private void DiffractSoundRay(Vector3 diffractionPoint, Vector3 mainDir, Vector3 edgeDir, float angle, SoundSegment segment, float remainVol, float triggerRadius)
{
float diffractionAngle = angle * SystemController.Instance.diffractionAngleRatio;
int numOfRays = Mathf.RoundToInt((float)rayFrequency / 360 * Mathf.Abs(diffractionAngle));
float delta = diffractionAngle / numOfRays;
Vector3 dir = mainDir;
Vector3 origin = new Vector3(diffractionPoint.x, transform.position.y, diffractionPoint.z);
for (int i = 0; i <= numOfRays; i++)
{
//if raycast inside the diffraction trigger, the ray will first hit the trigger from inside, so to prevent that we need to manually set the origin outside the trigger radius
soundSegmentQueue.Enqueue(new SoundSegment(segment._id, origin + dir * triggerRadius, dir, remainVol, segment._type, segment._reflectNum));
dir = UtilityMethod.RotateAroundY(delta, dir);
}
}
private void RayCastFromPoint(SoundSegment segment)
{
float remainVol = segment._volume;
if (remainVol < 0.1f || segment._reflectNum > system.reflectionLimit)
{
return;
}
//mapKeyPoints.Add(new MapPointData(sound.sid, last_hit.point, remainVol, fadingSpeed, stepDistance));
Ray ray = segment._ray;
Vector3 direction = ray.direction;
//calculate the reflection and start volume
//shoot ray again
float steps = remainVol / (system.fadingSpeed + float.Epsilon);
float spreadDist = steps * system.stepDistance;
_collider.enabled = false;
Physics.Raycast(ray, out RaycastHit hit, spreadDist, raycastLayer, QueryTriggerInteraction.Collide);
_collider.enabled = true;
if (hit.transform == null)
{
//nothing
if (drawDebugLine)
{
Debug.DrawRay(ray.origin, direction * spreadDist, Color.red, 0.1f);
}
UpdateMapPoint(segment, steps, true);
}
else if (hit.transform.gameObject.GetComponent <AgentSoundComponent>())
{
if (drawDebugLine)
{
Debug.DrawRay(ray.origin, direction * spreadDist, Color.red, 0.1f);
}
//calculate the remained volume
float distance = hit.distance;
float nextSteps = distance / system.stepDistance; //the new number of steps based on the current hit point of the ray
float remain = (remainVol - nextSteps * system.fadingSpeed); //remained volume at the hit point
UpdateMapPoint(segment, nextSteps, false);
//if the hit target is an Agent we notify them
CheckHitTarget(hit.transform.gameObject, segment._type, gameObject);
}
else if (hit.transform.tag == "DiffractionPoint")
{
if (drawDebugLine)
{
Debug.DrawLine(ray.origin, hit.point, Color.red, 0.1f);
}
// if this segment is already diffracted then we don't need to do it again
//if (diffractedSegments.Contains(segment._id))
//{
// return;
//}
//else
//{
// diffractedSegments.Add(segment._id);
//}
//calculate the remained volume
float distance = hit.distance;
float nextSteps = distance / system.stepDistance; //the new number of steps based on the current hit point of the ray
float remain = (remainVol - nextSteps * system.fadingSpeed) * SystemController.Instance.diffractionRate; //remained volume at the hit point
UpdateMapPoint(segment, nextSteps, false);
//handle diffraction
Vector3 edge = Vector3.zero;
float angle = 0;
//find signed triangle with direction and two edge vectors
DiffractionPoint diffracPoint = hit.transform.gameObject.GetComponent <DiffractionPoint>();
Vector3 dir = ray.direction;
float dotProduct_1 = Vector3.Dot(dir, diffracPoint.edgeVector_1);
float dotProduct_2 = Vector3.Dot(dir, diffracPoint.edgeVector_2);
if (dotProduct_1 > 0 && dotProduct_2 > 0)
{
//hit into the wall, just reflection or do nothing
//ReflectSoundRay(segment, sound, remainVol, ray, direction, hit);
Debug.DrawRay(hit.transform.position, edge * 10);
}
else if (dotProduct_1 < 0 && dotProduct_2 < 0)
{
//nothing for now
}
else if (dotProduct_1 > dotProduct_2)
{
edge = diffracPoint.edgeVector_1;
angle = Vector3.SignedAngle(edge, ray.direction, Vector3.up);
if (drawDebugLine)
{
Debug.DrawRay(hit.transform.position, edge * 10, Color.green, 0.1f);
}
}
else if (dotProduct_2 > dotProduct_1)
{
edge = diffracPoint.edgeVector_2;
angle = Vector3.SignedAngle(edge, ray.direction, Vector3.up);
if (drawDebugLine)
{
Debug.DrawRay(hit.transform.position, edge * 10, Color.green, 0.1f);
}
}
else
{
Debug.Log("impossible happened, both less than 0");
}
//after find the correct edge vector, we calculate a diffraction angle in between
if (edge != Vector3.zero)
{
DiffractSoundRay(diffracPoint.transform.position, ray.direction, edge, angle, segment, remain, diffracPoint.TriggerRadius());
}
}
else
{
//if (segment._reflectNum >= 1) { Debug.Log("yeah"); }
ReflectSoundRay(segment, remainVol, ray, direction, hit);
}
}
public void MapSoundData(List <Vector3> positions, List <float> newIntensities, SoundSegment seg, GameObject source)
{
count = positions.Count;
for (int i = 0; i < count; i++)
{
float x = positions[i].x - startPoint.x;
float z = positions[i].z - startPoint.z;
int cellX = Mathf.RoundToInt(x / soundMapTileSize);
int cellY = Mathf.RoundToInt(z / soundMapTileSize);
if (cellX < resolution.x && cellY < resolution.y && cellX >= 0 && cellY >= 0)
{
//Debug.Log(cellX + ", " + cellY);
map[cellX, cellY].GetComponent <PointIntensity>().AddNewSoundPoint(newIntensities[i], seg, source.name);
//add this point to modified list
int key = cellX * (int)resolution.y + cellY;
int value;
if (!modifiedMapGrids.TryGetValue(key, out value))
{
//test if the value is already exist in the dictionary, if not we add this value as both key and value
modifiedMapGrids.Add(key, key);
}
//draw yellow line to indicate the mapping
if (drawPointDistribution)
{
Debug.DrawLine(positions[i], map[cellX, cellY].transform.position, Color.yellow);
}
}
}
}