using UnityEditor;
using UnityEngine;

[CanEditMultipleObjects]
[CustomEditor(typeof(UnityJellySprite))]
class UnityJellySpriteEditor : JellySpriteEditor
{
	public SerializedProperty m_Sprite;
	public Object m_InitialSprite;
	
	protected override void OnEnable() 
	{
		base.OnEnable();
		m_Sprite = serializedObject.FindProperty("m_Sprite");
	}
	
	protected override void DisplayInspectorGUI()
	{
		EditorGUILayout.PropertyField(m_Sprite, new GUIContent("Sprite"));
		base.DisplayInspectorGUI();
	}

	protected override void StoreInitialValues()
	{
		m_InitialSprite = m_Sprite.objectReferenceValue;
		base.StoreInitialValues();
	}

    protected override void CheckForObjectChanges()
    {
        base.CheckForObjectChanges();
        JellySprite targetObject = this.target as JellySprite;

        if (m_InitialSprite != m_Sprite.objectReferenceValue)
        {
            Sprite sprite = m_Sprite.objectReferenceValue as Sprite;
            Bounds bounds = sprite.bounds;
            float pivotX = -bounds.center.x / bounds.extents.x;
            float pivotY = -bounds.center.y / bounds.extents.y;
            targetObject.m_CentralBodyOffset = targetObject.m_SoftBodyOffset = new Vector3(pivotX * bounds.extents.x * targetObject.m_SpriteScale.x, pivotY * bounds.extents.y * targetObject.m_SpriteScale.y, 0.0f);
            targetObject.RefreshMesh();
        }
    }    

	void OnSceneGUI ()
	{
		UpdateHandles();
	}
}