private bool IsNearPolyEdge(Vector3 pos, float size)
{
if (size < 0.01f)
{
return(false);
}
for (int i = 0; i < points.Length - 1; i++)
{
if (WorldGenTool.GetEdgeDist(pos, points[i].position, points[i + 1].position) < size)
{
return(true);
}
}
if (WorldGenTool.GetEdgeDist(pos, points[points.Length - 1].position, points[0].position) < size)
{
return(true);
}
return(false);
}
//In world space
private bool IsInsideZone(Vector3 pos)
{
return(WorldGenTool.IsPointInPolygon(pos, points));
}
public void SpawnBiomeGroup(BiomeSpawnData data, int index)
{
Random.InitState(seed + index); //Each group should have its own seed, so if one group change the other is not affected
spawned_items_group.Clear();
float area_size = WorldGenTool.AreaSizePolygon(points);
float density_dist = (150f - data.variance) / data.density; //Density determine minimum distance between each object of same group
int spawn_max = Mathf.RoundToInt(data.density * area_size / (10f * data.variance)); //Determine max number of objects
GameObject parent = new GameObject(data.name);
parent.transform.SetParent(transform);
parent.transform.localPosition = Vector3.zero;
Vector3 min = WorldGenTool.GetPolygonMin(points);
Vector3 max = WorldGenTool.GetPolygonMax(points);
for (int i = 0; i < iterations; i++)
{
if (spawned_items_group.Count > spawn_max)
{
return;
}
Vector3 pos = new Vector3(Random.Range(min.x, max.x), this.data.elevation, Random.Range(min.z, max.z));
if (IsInsideZone(pos))
{
GameObject prefab = data.PickRandomPrefab();
if (prefab != null)
{
WorldGenObject properties = prefab.GetComponent <WorldGenObject>();
float gsize = (properties != null) ? properties.size_group : 0.25f; //Group size
float csize = (properties != null) ? properties.size : 0.25f; //Colliding size
if (!IsNearOther(pos, csize) && IsFitDensity(pos, density_dist, gsize))
{
bool is_valid;
if (properties != null && properties.type == WorldGenObjectType.AvoidEdge)
{
is_valid = !IsNearPolyEdge(pos, properties.edge_dist);
}
else if (properties != null && properties.type == WorldGenObjectType.NearEdge)
{
is_valid = IsNearPolyEdge(pos, properties.edge_dist) && !IsNearPolyEdge(pos, csize);
}
else
{
is_valid = !IsNearPolyEdge(pos, csize);
}
if (is_valid)
{
GameObject nobj = InstantiatePrefab(prefab, parent.transform);
nobj.transform.position = pos;
if (data.random_rotation)
{
nobj.transform.rotation = Quaternion.Euler(0f, Random.Range(0f, 360f), 0f);
}
if (data.random_scale > 0.01f)
{
nobj.transform.localScale = Vector3.one * (1f + Random.Range(-data.random_scale, data.random_scale));
}
if (properties == null)
{
Collider collide = nobj.GetComponentInChildren <Collider>();
csize = collide != null ? collide.bounds.extents.magnitude : 0.25f;
}
spawned_items.Add(nobj);
spawned_items_group.Add(nobj);
group_size[nobj] = gsize;
collider_size[nobj] = csize;
}
}
}
}
}
}
