Basic functionality

Assets/Scripts/Collectible.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Collectible : MonoBehaviour
+{
+    public int score = 1;
+
+    public bool collected = false;
+
+    public bool isEnabled = true;
+
+    Renderer r;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        r = GetComponent<Renderer>();
+
+        if (collected || !isEnabled)
+        {
+            Hide();
+        }
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+
+    }
+
+    public void Collect()
+    {
+        collected = true;
+        Hide();
+    }
+
+    void Hide()
+    {
+        r.enabled = false;
+    }
+
+    void Show()
+    {
+        r.enabled = true;
+    }
+}

Assets/Scripts/Collectible.cs.meta

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Assets/Scripts/Collectibles.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Collectibles : MonoBehaviour
+{
+    // Start is called before the first frame update
+    void Start()
+    {
+        
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+}

Assets/Scripts/Collectibles.cs.meta

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Assets/Scripts/FishCollector.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class FishCollector : MonoBehaviour
+{
+    public GameObject collectiblesContainer;
+
+    // Total score of all collectibles
+    public int totalScore = 0;
+
+    Collectible[] collectibles;
+
+    Renderer r;
+
+    CharacterController cc;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        r            = GetComponent<Renderer>();
+        cc           = GetComponent<CharacterController>();
+
+        collectibles = collectiblesContainer.GetComponentsInChildren<Collectible>();
+    }
+
+    // FixedUpdate is called consistently at 50 fps (by default)
+    // Figured we can do collection checks slightly less frequently :)
+    void FixedUpdate()
+    {
+        Vector3      fishPosition = r.bounds.center;
+
+        foreach (Collectible collectible in collectibles)
+        {
+            if (collectible.collected || !collectible.isEnabled)
+            {
+                // Skip collectibles already collected or disabled
+                continue;
+            }
+
+            Renderer collectibleRenderer = collectible.GetComponent<Renderer>();
+            float    collectibleRadius   = collectibleRenderer.bounds.extents.magnitude;
+            Vector3  collectiblePosition = collectibleRenderer.bounds.center;
+
+            bool x = false;
+            bool y = false;
+            bool z = false;
+
+            // Debug.Log(String.Format("FishPosition: {0}, CollectiblePosition: {1}, CollectibleRadius: {2}", fishPosition, collectiblePosition, collectibleRadius));
+
+            // Check if we are colliding with the collectible
+            if (fishPosition.x >= collectiblePosition.x - collectibleRadius &&
+                fishPosition.x <= collectiblePosition.x + collectibleRadius)
+            {
+                x = true;
+            }
+
+            if (fishPosition.y >= collectiblePosition.y - collectibleRadius &&
+                fishPosition.y <= collectiblePosition.y + collectibleRadius)
+            {
+                y = true;
+            }
+
+            if (fishPosition.z >= collectiblePosition.z - collectibleRadius &&
+                fishPosition.z <= collectiblePosition.z + collectibleRadius)
+            {
+                z = true;
+            }
+
+            if (x && y && z)
+            {
+                totalScore += collectible.score;
+                collectible.Collect();
+                // Assume we aren't colliding with 2 at the same time!
+                break;
+            }
+
+
+        }
+    }
+}

Assets/Scripts/FishCollector.cs.meta

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