Pickup Pizza und so

3d Prototyp/Assets/Pickupper.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Serialization;
+using Utility;
+
+public class Pickupper : MonoBehaviour
+{
+    [SerializeField] private Character _character;
+    
+    [SerializeField, Tooltip("Der Radius in dem Gottfried Gegenstände aufheben kann."), Min(0.0f)]
+    private float _pickupRadius = 1.5f;
+
+    /// <summary>
+    /// Der Radius in dem Gottfried Gegenstände aufheben kann.
+    /// </summary>
+    public float PickupRadius => _pickupRadius;
+
+    [SerializeField]
+    private CapsuleCollider _pickupCollider;
+
+    [SerializeField]
+    private List<Pickupable> _pickupablesInRange = new();
+
+    public IReadOnlyList<Pickupable> PickupablesInRange => _pickupablesInRange;
+
+    private int _selectedActionIndex = 0;
+
+    public bool CanSelectPrevious => _selectedActionIndex > 0;
+    public bool CanSelectNext => _selectedActionIndex < PickupablesInRange.Count - 1;
+
+    public Pickupable Selected => PickupablesInRange[_selectedActionIndex];
+    
+    void Update()
+    {
+        if (Input.GetKeyDown(KeyCode.LeftArrow))
+        {
+            SelectPreviousAction();
+        }
+        
+        if (Input.GetKeyDown(KeyCode.RightArrow))
+        {
+            SelectNextAction();
+        }
+
+        if (Input.GetKeyDown(KeyCode.E))
+        {
+            PickUp();
+        }
+    }
+
+    private void PickUp()
+    {
+        if (PickupablesInRange.Count == 0)
+            return;
+
+        Pickupable pickupable = Selected;
+        
+        UnhighlightPickupable(pickupable);
+        _character.PickupItem(pickupable);
+    }
+
+    public void SelectPreviousAction()
+    {
+        _selectedActionIndex--;
+        UpdateSelection();
+    }
+
+    public void SelectNextAction()
+    {
+        _selectedActionIndex++;
+        UpdateSelection();
+    }
+
+    private void UpdateSelection()
+    {
+        if (_pickupablesInRange.Count > 0)
+        {
+            _selectedActionIndex = Math.Clamp(_selectedActionIndex, 0, PickupablesInRange.Count - 1);
+        }
+        else
+        {
+            _selectedActionIndex = 0;
+        }
+
+        int index = 0;
+        foreach (Pickupable pickupable in _pickupablesInRange)
+        {
+            pickupable.SetSelected(index == _selectedActionIndex);
+            index++;
+        }
+    }
+    
+    private void OnTriggerEnter(Collider other)
+    {
+        Pickupable pickupable = other.gameObject.GetComponent<Pickupable>();
+
+        if (pickupable)
+        {
+            HighlightPickupable(pickupable);
+        }
+    }
+    
+    void OnTriggerExit(Collider other)
+    {
+        Pickupable pickupable = other.gameObject.GetComponent<Pickupable>();
+
+        if (pickupable)
+        {
+            UnhighlightPickupable(pickupable);
+        }
+    }
+
+    private void HighlightPickupable(Pickupable pickupable)
+    {
+        if (!_pickupablesInRange.Contains(pickupable))
+            _pickupablesInRange.Add(pickupable);
+
+        pickupable.Highlight(true);
+        
+        UpdateSelection();
+    }
+    
+    private void UnhighlightPickupable(Pickupable pickupable)
+    {
+        pickupable.Highlight(false);
+        _pickupablesInRange.Remove(pickupable);
+        UpdateSelection();
+    }
+
+    // Wird aufgerufen, wenn ein Wert im Editor geändert wird
+    void OnValidate()
+    {
+        if (_pickupCollider)
+        {
+            _pickupCollider.radius = _pickupRadius;
+        }
+    }
+}