public void OnEnable()
{
groups = GameObject.FindGameObjectWithTag("Foliage").GetComponent <FoilageGroup>();
}
/// <summary>
/// This is just a "Demo" function.
/// Distributes the points across the location, based on the position
/// of Generated Points.
/// </summary>
public void Distribute(FoilageGroup group)
{
if (Points == null || group == null)
{
Debug.Log("Points not generated or foilage groups is null");
return;
}
RaycastHit hitInfo;
// create a parent for distributed objects
GameObject parent = new GameObject();
parent.name = location.name + " -Parent";
foreach (Vector3 position in Points)
{
if (Physics.Raycast(position, Vector3.down, out hitInfo)) // create a ray from destinaion position in -Y direction.
{
// choose a random object from foilage group objects
int rand = Random.Range(0, group.groupObjects.Count);
GameObject originalObj = group.groupObjects[rand];
if (originalObj.GetComponent <GrassPatch>())
{
GameObject newObj = Instantiate(originalObj);
newObj.transform.position = hitInfo.point + new Vector3(0, 3f, 0);
newObj.transform.parent = parent.transform;
group.Randomize(newObj, group.foilageRules[rand]);
GrassPatch instPatch = newObj.GetComponent <GrassPatch>();
GrassPatch originalPatch = originalObj.GetComponent <GrassPatch>();
for (int i = 0; i < originalPatch.grassPlanes.Count; i++)
{
GrassPlane originalPlane = originalPatch.grassPlanes[i]; // original patch
GrassPlane instPlane = instPatch.grassPlanes[i]; // instantiated patch
instPlane.transform = Instantiate(originalPlane.transform.gameObject).transform;
instPlane.transform.parent = newObj.transform;
// copy settings
instPlane.groundVerts = originalPlane.groundVerts;
// make position its relative position is same as original
Vector3 worldPos = newObj.transform.TransformPoint(originalPlane.transform.localPosition);
Vector3 localPos = newObj.transform.InverseTransformPoint(worldPos);
instPlane.transform.localPosition = localPos;
// make it rotate according to ground normal
hitInfo = new RaycastHit();
if (Physics.Raycast(instPlane.transform.position, -Vector3.up * 5f, out hitInfo, LayerMask.NameToLayer("Ground")))
{
if (group.foilageRules[rand].useNormal)
{
instPlane.transform.localEulerAngles = hitInfo.normal;
}
instPlane.transform.position = hitInfo.point;
}
}
instPatch.Place();
}
}
}
}
