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- using System.Collections;
- using System.Collections.Generic;
- using UnityEngine;
- using TMPro;
- using UnityEngine.UI;
-
- public class LogicTrayUI : LogicElementHolder
- {
-
- //[SerializeField]
- //protected List<LogicBlock> list;
- [SerializeField]
- protected LogicElementUI Prefab;
- [SerializeField]
- protected int insertIndex = -1;
- [SerializeField]
- private Transform content;
- [SerializeField]
- private int maxLength = 6;
-
- [SerializeField]
- public BlockReader reader;
-
- #region Unity Functions
- public void Start()
- {
- UpdateDisplay();
- }
-
- protected override void OnEnable()
- {
- base.OnEnable();
- if (reader != null)
- reader.OnUpdate += UpdateDisplay;
- }
-
- protected override void OnDisable()
- {
- base.OnDisable();
- if (reader != null)
- reader.OnUpdate -= UpdateDisplay;
- }
- #endregion Unity Functions
-
- public void SetBlockReader(BlockReader newBlockReader)
- {
- if (reader != null)
- reader.OnUpdate -= UpdateDisplay;
-
- reader = newBlockReader;
- reader.OnUpdate += UpdateDisplay;
- UpdateDisplay();
- }
-
- [ContextMenu("Update Display")]
- public void UpdateDisplay()
- {
- if (reader == null)
- return;
-
- //Destroy all children
- int destroyedCount = content.childCount; //we need to know how many were destroyed since unity doesn't actually destroy anything until the end of the frame
- foreach (Transform child in content)
- Destroy(child.gameObject);
-
- //Instatiate logicElement prefab
- foreach (LogicBlock element in reader.LogicChain)
- {
- LogicElementUI elementUI = Instantiate(Prefab.gameObject, content).GetComponent<LogicElementUI>();
- elementUI.Initialise(element, this);
- }
-
- //Add insertIndex object if needed
- if (insertIndex != -1)
- {
- GameObject elementObject = Instantiate(Prefab.gameObject, content);
-
- if (reader.Length < maxLength)
- {
- elementObject.GetComponentInChildren<TextMeshProUGUI>().text = "insert";
- elementObject.GetComponentInChildren<Image>().color = new Color(0.5f, 0.5f, 0.5f, 0.25f);
- }
- else
- {
- elementObject.GetComponentInChildren<TextMeshProUGUI>().text = "X";
- elementObject.GetComponentInChildren<Image>().color = new Color(1.0f, 0.25f, 0.25f, 0.5f);
- }
-
- //Set sibling index to where we want it in list + add destroyedCount since technically they are still here
- elementObject.transform.SetSiblingIndex(destroyedCount + insertIndex);
- }
-
-
-
- }
-
- #region LogicElementHolder Implementation
-
- /// <summary>
- /// When a LogicElement has started being dragged from this Tray
- /// </summary>
- /// <param name="element">Element which is being dragged</param>
- public override void OnRemove(LogicElementUI element)
- {
- Vector2 offset = new Vector2(element.rectTransform.rect.width / 2, 0);
- int index = GetInsertIndex(element.rectTransform, offset);
- if (index >= reader.LogicChain.Count)
- index = reader.LogicChain.Count - 1;
- reader.LogicChain.RemoveAt(index);
- }
-
- /// <summary>
- /// When a logicElement needs to be added back to this Tray
- /// </summary>
- /// <param name="element">Element to add</param>
- public override void OnAdd(LogicElementUI element)
- {
- int index = GetInsertIndex(element.rectTransform);
- reader.Insert(index, element.logicElement);
-
- Destroy(element.gameObject);
- }
-
- /// <summary>
- /// When a logic Element is hovering over this holder
- /// </summary>
- /// <param name="element">Element which is hovering</param>
- public override void OnHover(LogicElementUI element)
- {
- insertIndex = GetInsertIndex(element.rectTransform);
- UpdateDisplay();
- }
-
- /// <summary>
- /// First frame a logic Element is hovering over this holder
- /// </summary>
- /// <param name="element">Element which is hovering</param>
- public override void OnHoverStart(LogicElementUI element)
- {
- Debug.Log("OnHoverStart");
- //Create insert prefab at End
- insertIndex = content.childCount;
- UpdateDisplay();
- }
-
- /// <summary>
- /// first frame a logic Element is no longer hovering over this holder
- /// </summary>
- /// <param name="element">Element which is hovering</param>
- public override void OnHoverEnd(LogicElementUI element)
- {
- //Remove insert prefab
- insertIndex = -1;
- UpdateDisplay();
- }
-
- /// <summary>
- /// Called when an element in this holder is double clicked
- /// </summary>
- /// <param name="element">element which was double clicked</param>
- public override void OnDoubleClick(LogicElementUI element)
- {
- throw new System.NotImplementedException();
- }
-
- /// <summary>
- /// Called to check if this holder can hold the provided element;
- /// </summary>
- /// <param name="element">element to check if it can hold</param>
- /// <returns>returns true if this can hold the element </returns>
- public override bool canHold(LogicElementUI element)
- {
- return reader.Length < maxLength;
- }
-
- #endregion LogicElementHolder Implementation
-
-
-
- #region Helper Functions
-
- public int GetInsertIndex(RectTransform rt, Vector2 offset)
- {
- Rect rect = rt.GlobalRect();
- rect.center += offset;
-
- foreach (Transform child in content)
- {
- RectTransform childRect = child as RectTransform;
-
- if (rect.Overlaps(childRect.GlobalRect()))
- return child.GetSiblingIndex();
- }
- return reader.LogicChain.Count;
- }
-
- public int GetInsertIndex(RectTransform rt)
- {
- return GetInsertIndex(rt, Vector2.zero);
- }
-
- #endregion Helper Functions
-
- }
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