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// This code is part of the Fungus library (https://github.com/snozbot/fungus)
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// It is released for free under the MIT open source license (https://github.com/snozbot/fungus/blob/master/LICENSE)
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using UnityEngine;
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using System.Collections.Generic;
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namespace Fungus
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{
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/// <summary>
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/// The block will execute when the player starts dragging an object.
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/// </summary>
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[EventHandlerInfo("Sprite",
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"Drag Started",
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"The block will execute when the player starts dragging an object.")]
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[AddComponentMenu("")]
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public class DragStarted : EventHandler
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{
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public class DragStartedEvent
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{
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public Draggable2D DraggableObject;
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public DragStartedEvent(Draggable2D draggableObject)
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{
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DraggableObject = draggableObject;
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}
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}
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[SerializeField] protected VariableReference draggableRef;
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[SerializeField] protected List<Draggable2D> draggableObjects;
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[HideInInspector]
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[SerializeField] protected Draggable2D draggableObject;
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protected EventDispatcher eventDispatcher;
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protected virtual void OnEnable()
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{
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eventDispatcher = FungusManager.Instance.EventDispatcher;
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eventDispatcher.AddListener<DragStartedEvent>(OnDragStartedEvent);
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}
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/// <summary>
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/// Called when the script is loaded or a value is changed in the
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/// inspector (Called in the editor only).
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/// </summary>
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void OnValidate()
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{
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//add any dragableobject already present to list for backwards compatability
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if(draggableObject!=null){
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if(!draggableObjects.Contains(draggableObject)){
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draggableObjects.Add(draggableObject);
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}
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}
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}
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protected virtual void OnDisable()
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{
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eventDispatcher.RemoveListener<DragStartedEvent>(OnDragStartedEvent);
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eventDispatcher = null;
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}
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void OnDragStartedEvent(DragStartedEvent evt)
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{
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OnDragStarted(evt.DraggableObject);
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}
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#region Public members
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/// <summary>
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/// Called by the Draggable2D object when the drag starts.
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/// </summary>
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public virtual void OnDragStarted(Draggable2D draggableObject)
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{
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if (draggableObjects.Contains(draggableObject))
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{
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draggableRef.Set<GameObject>(draggableObject.gameObject);
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ExecuteBlock();
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}
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}
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public override string GetSummary()
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{
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string summary = "Draggable: ";
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if (this.draggableObjects != null && this.draggableObjects.Count != 0)
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{
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for (int i = 0; i < this.draggableObjects.Count; i++)
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{
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if (draggableObjects[i] != null)
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{
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summary += draggableObjects[i].name + ",";
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}
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}
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}
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if (summary.Length == 0)
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{
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return "None";
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}
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return summary;
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}
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#endregion
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}
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}
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