/// <summary>
/// Given a Composite Collider 2D, it replaces existing Shadow Caster 2Ds (children) with new Shadow Caster 2D objects whose
/// shapes coincide with the paths of the collider.
/// </summary>
/// <remarks>
/// It is recommended that the object that contains the collider component has a Composite Shadow Caster 2D too.
/// It is recommended to call this method in editor only.
/// </remarks>
/// <param name="collider">The collider which will be the parent of the new shadow casters.</param>
/// <param name="selfShadows">Whether the shadow casters will have the Self Shadows option enabled..</param>
public static void GenerateTilemapShadowCasters(CompositeCollider2D collider, bool selfShadows)
{
// First, it destroys the existing shadow casters
ShadowCaster2D[] existingShadowCasters = collider.GetComponentsInChildren <ShadowCaster2D>();
for (int i = 0; i < existingShadowCasters.Length; ++i)
{
if (existingShadowCasters[i].transform.parent != collider.transform)
{
continue;
}
GameObject.DestroyImmediate(existingShadowCasters[i].gameObject);
}
// Then it creates the new shadow casters, based on the paths of the composite collider
int pathCount = collider.pathCount;
List <Vector2> pointsInPath = new List <Vector2>();
List <Vector3> pointsInPath3D = new List <Vector3>();
for (int i = 0; i < pathCount; ++i)
{
collider.GetPath(i, pointsInPath);
GameObject newShadowCaster = new GameObject("ShadowCaster2D");
newShadowCaster.isStatic = true;
newShadowCaster.transform.SetParent(collider.transform, false);
for (int j = 0; j < pointsInPath.Count; ++j)
{
pointsInPath3D.Add(pointsInPath[j]);
}
ShadowCaster2D component = newShadowCaster.AddComponent <ShadowCaster2D>();
component.SetPath(pointsInPath3D.ToArray());
component.SetPathHash(Random.Range(int.MinValue, int.MaxValue)); // The hashing function GetShapePathHash could be copied from the LightUtility class
component.selfShadows = selfShadows;
component.Update();
pointsInPath.Clear();
pointsInPath3D.Clear();
}
}
/// <summary>
/// Given a Composite Collider 2D, it replaces existing Shadow Caster 2Ds (children) with new Shadow Caster 2D objects whose
/// shapes coincide with the paths of the collider.
/// </summary>
/// <remarks>
/// It is recommended that the object that contains the collider component has a Composite Shadow Caster 2D too.
/// It is recommended to call this method in editor only.
/// </remarks>
/// <param name="collider">The collider which will be the parent of the new shadow casters.</param>
private static void GenerateTilemapShadowCasters(CompositeCollider2D collider)
{
// First, it destroys the existing shadow casters
ShadowCaster2D[] existingShadowCasters = collider.GetComponentsInChildren <ShadowCaster2D>();
foreach (ShadowCaster2D existingShadowCaster in existingShadowCasters)
{
Object.DestroyImmediate(existingShadowCaster.gameObject);
}
// Then it creates the new shadow casters, based on the paths of the composite collider
int pathCount = collider.pathCount;
List <Vector2> pointsInPath = new List <Vector2>();
List <Vector3> pointsInPath3D = new List <Vector3>();
for (int i = 0; i < pathCount; ++i)
{
collider.GetPath(i, pointsInPath);
GameObject newShadowCaster = new GameObject("ShadowCaster2D")
{
isStatic = true
};
newShadowCaster.transform.SetParent(collider.transform, false);
pointsInPath3D.AddRange(pointsInPath.Select(pointInPath => (Vector3)pointInPath));
ShadowCaster2D component = newShadowCaster.AddComponent <ShadowCaster2D>();
component.selfShadows = true;
component.SetPath(pointsInPath3D.ToArray());
component.SetPathHash(Random.Range(int.MinValue,
int.MaxValue)); // The hashing function GetShapePathHash could be copied from the LightUtility class
pointsInPath.Clear();
pointsInPath3D.Clear();
}
UnityEditor.SceneManagement.EditorSceneManager.MarkAllScenesDirty();
}