private float[] GetTextureMix(FootStepObject footStepObj)
{
// returns an array containing the relative mix of textures
// on the main terrain at this world position.
// The number of values in the array will equal the number
// of textures added to the terrain.
UpdateTerrainInfo(footStepObj.terrain);
// calculate which splat map cell the worldPos falls within (ignoring y)
var worldPos = footStepObj.sender.position;
int mapX = (int)(((worldPos.x - terrainPos.x) / terrainData.size.x) * terrainData.alphamapWidth);
int mapZ = (int)(((worldPos.z - terrainPos.z) / terrainData.size.z) * terrainData.alphamapHeight);
// get the splat data for this cell as a 1x1xN 3d array (where N = number of textures)
if (!terrainCollider.bounds.Contains(worldPos))
{
return(new float[0]);
}
float[,,] splatmapData = terrainData.GetAlphamaps(mapX, mapZ, 1, 1);
// extract the 3D array data to a 1D array:
float[] cellMix = new float[splatmapData.GetUpperBound(2) + 1];
for (int n = 0; n < cellMix.Length; n++)
{
cellMix[n] = splatmapData[0, 0, n];
}
return(cellMix);
}
/// <summary>
/// Step on Terrain
/// </summary>
/// <param name="footStepObject"></param>
public void StepOnTerrain(FootStepObject footStepObject)
{
if (currentStep != null && currentStep == footStepObject.sender)
{
return;
}
currentStep = footStepObject.sender;
surfaceIndex = GetMainTexture(footStepObject);
if (surfaceIndex != -1)
{
#if UNITY_2018_3_OR_NEWER
var name = (terrainData != null && terrainData.terrainLayers.Length > 0) ? (terrainData.terrainLayers[surfaceIndex]).diffuseTexture.name : "";
#else
var name = (terrainData != null && terrainData.splatPrototypes.Length > 0) ? (terrainData.splatPrototypes[surfaceIndex]).texture.name : "";
#endif
footStepObject.name = name;
PlayFootFallSound(footStepObject, spawnParticle, spawnStepMark, volume);
if (debugTextureName)
{
Debug.Log(terrain.name + " " + name);
}
}
}
private int GetMainTexture(FootStepObject footStepObj)
{
// returns the zero-based index of the most dominant texture
// on the main terrain at this world position.
float[] mix = GetTextureMix(footStepObj);
if (mix == null)
{
return(-1);
}
float maxMix = 0;
int maxIndex = 0;
// loop through each mix value and find the maximum
for (int n = 0; n < mix.Length; n++)
{
if (mix[n] > maxMix)
{
maxIndex = n;
maxMix = mix[n];
}
}
return(maxIndex);
}
/// <summary>
/// Step on Terrain
/// </summary>
/// <param name="footStepObject"></param>
public void StepOnTerrain(FootStepObject footStepObject)
{
if (currentStep != null && currentStep == footStepObject.sender)
{
return;
}
currentStep = footStepObject.sender;
if (terrainData)
{
surfaceIndex = GetMainTexture(footStepObject.sender.position);
}
//bool valid = (terrainData != null && terrainData.splatPrototypes != null && terrainData.splatPrototypes.Length > 0
//&& terrainData.splatPrototypes.Length <= surfaceIndex && terrainData.splatPrototypes[surfaceIndex].texture != null);
var name = (terrainData != null && terrainData.splatPrototypes.Length > 0) ? (terrainData.splatPrototypes[surfaceIndex]).texture.name : "";
footStepObject.name = name;
PlayFootFallSound(footStepObject);
if (debugTextureName)
{
Debug.Log(name);
}
}
/// <summary>
/// Step on Mesh
/// </summary>
/// <param name="footStepObject"></param>
public void StepOnMesh(FootStepObject footStepObject)
{
if (currentStep != null && currentStep == footStepObject.sender)
{
return;
}
currentStep = footStepObject.sender;
PlayFootFallSound(footStepObject);
if (debugTextureName)
{
Debug.Log(footStepObject.name);
}
}
void StepMark(FootStepObject footStep)
{
RaycastHit hit;
if (Physics.Raycast(footStep.sender.transform.position + new Vector3(0, 0.1f, 0), -footStep.sender.up, out hit, 1f, stepLayer))
{
if (stepMark)
{
var angle = Quaternion.FromToRotation(footStep.sender.up, hit.normal);
var step = Instantiate(stepMark, hit.point, angle * footStep.sender.rotation) as GameObject;
//step.transform.SetParent(footStep.ground.transform);
Destroy(step, timeToDestroy);
}
}
}
public void PlayFootFallSound(FootStepObject footStepObject, bool spawnParticle = true, bool spawnStepMark = true, float volume = 1f)
{
for (int i = 0; i < customSurfaces.Count; i++)
{
if (customSurfaces[i] != null && ContainsTexture(footStepObject.name, customSurfaces[i]))
{
customSurfaces[i].PlayRandomClip(footStepObject, spawnParticle, spawnStepMark, volume);
return;
}
}
if (defaultSurface != null)
{
defaultSurface.PlayRandomClip(footStepObject, spawnParticle, spawnStepMark, volume);
}
}
public void PlayFootFallSound(FootStepObject footStepObject)
{
for (int i = 0; i < customSurfaces.Count; i++)
{
if (customSurfaces[i] != null && ContainsTexture(footStepObject.name, customSurfaces[i]))
{
customSurfaces[i].PlayRandomClip(footStepObject);
return;
}
}
if (defaultSurface != null)
{
defaultSurface.PlayRandomClip(footStepObject);
}
}
public void PlayRandomClip(FootStepObject footStepObject)
{
// if there are no clips to play return.
if (audioClips == null || audioClips.Count == 0)
{
return;
}
// initialize variable if not already started
if (randomSource == null)
{
randomSource = new vFisherYatesRandom();
}
// find a random clip and play it.
GameObject audioObject = null;
if (audioSource != null)
{
audioObject = Instantiate(audioSource.gameObject, footStepObject.sender.position, Quaternion.identity) as GameObject;
}
else
{
audioObject = new GameObject("audioObject");
audioObject.transform.position = footStepObject.sender.position;
}
var source = audioObject.AddComponent <vAudioSurfaceControl>();
if (audioMixerGroup != null)
{
source.outputAudioMixerGroup = audioMixerGroup;
}
int index = randomSource.Next(audioClips.Count);
if (particleObject && footStepObject.ground && stepLayer.ContainsLayer(footStepObject.ground.gameObject.layer))
{
var obj = Instantiate(particleObject, footStepObject.sender.position, footStepObject.sender.rotation) as GameObject;
obj.transform.SetParent(vObjectContainer.root, true);
}
if (useStepMark)
{
StepMark(footStepObject);
}
source.PlayOneShot(audioClips[index]);
}
/// <summary>
/// Step on Terrain
/// </summary>
/// <param name="footStepObject"></param>
public void StepOnTerrain(FootStepObject footStepObject)
{
if (currentStep != null && currentStep == footStepObject.sender)
{
return;
}
currentStep = footStepObject.sender;
surfaceIndex = GetMainTexture(footStepObject);
if (surfaceIndex != -1)
{
var name = (terrainData != null && terrainData.splatPrototypes.Length > 0) ? (terrainData.splatPrototypes[surfaceIndex]).texture.name : "";
footStepObject.name = name;
PlayFootFallSound(footStepObject);
if (debugTextureName)
{
Debug.Log(terrain.name + " " + name);
}
}
}
void OnTriggerEnter(Collider other)
{
if (_fT == null)
{
return;
}
if ((lastCollider == null || lastCollider != other) || footstepObj == null)
{
footstepObj = new FootStepObject(transform, other);
lastCollider = other;
}
if (footstepObj.isTerrain) //Check if trigger objet is a terrain
{
_fT.StepOnTerrain(footstepObj);
}
else
{
_fT.StepOnMesh(footstepObj);
}
}
