private void OnEnable()
{
// Load or create layers asset
if (!LoadLayersAsset())
{
CreateLayersAsset();
}
// Setup re-orderable list for managing layers
layersList = new ReorderableList(layers.layers, typeof(string));
layersList.drawHeaderCallback = (Rect rect) => {
GUI.Label(rect, "Layers");
};
layersList.onAddCallback = AddLayer;
layersList.drawElementCallback = DrawLayerElement;
layersList.onRemoveCallback = RemoveLayer;
layersList.onReorderCallback = ReorderLayers;
// If there are no layers, make a default one
if (layers.layers.Count == 0)
{
TileMapLayers.Layer layer = new TileMapLayers.Layer();
layer.enabled = true;
layer.name = "Default";
layers.layers.Add(layer);
}
layersList.index = 0;
}
private void AddLayer(ReorderableList list)
{
TileMapLayers.Layer layer = new TileMapLayers.Layer();
layer.enabled = true;
layer.name = "New Layer";
list.list.Add(layer);
EditorUtility.SetDirty(layers);
}
private void DrawLayerElement(Rect rect, int index, bool isActive, bool isFocused)
{
TileMapLayers.Layer layer = (TileMapLayers.Layer)layersList.list[index];
// Add some padding
rect.yMin++;
rect.height -= 2f;
// Enabled checkbox
bool wasEnabled = layer.enabled;
layer.enabled = EditorGUI.Toggle(new Rect(rect.position, new Vector2(rect.height, rect.height)), layer.enabled);
if (layer.enabled != wasEnabled)
{
Transform layerObject = ((TileMap)target).transform.Find(layer.name);
if (layerObject != null)
{
layerObject.gameObject.SetActive(layer.enabled);
}
}
rect.xMin += rect.height + 2f;
// Layer name textbox
string newName = EditorGUI.TextField(rect, layer.name);
if (layer.name != newName)
{
if (!layers.layers.Exists((TileMapLayers.Layer other) => other.name == newName) && newName != "")
{
Transform layerObject = ((TileMap)target).transform.Find(layer.name);
if (layerObject != null)
{
layerObject.name = newName;
}
layer.name = newName;
}
}
layersList.list[index] = layer;
if (GUI.changed)
{
EditorUtility.SetDirty(layers);
}
}
