Pull request #60: unit cooldown

Merge in CGD/gather-and-defend from feature/unit_cooldown_time to main

* commit 'effe4ca2ccedfb7c3b338f8437596cad9f012e6d':
  unit cooldown

Assets/Prefabs/UI/BuyableUnitsView/GameObjectPlacementButton.prefab

@@ -112,6 +112,7 @@ RectTransform:
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@@ -203,9 +204,11 @@ MonoBehaviour:
   _wood: 0
   _rock: 0
   _food: 0
+  _cooldownInSeconds: 3
   _foodLabel: {fileID: 907652129260736055}
   _woodLabel: {fileID: 2551561112895533431}
   _rockLabel: {fileID: 3195941792010457804}
+  _cooldownIndicator: {fileID: 5207475109691974292}
   _prefab: {fileID: 0}
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 CanvasGroup:
@@ -941,6 +944,82 @@ CanvasGroup:
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Assets/Prefabs/UI/BuyableUnitsView/TilePlacementButton.prefab

@@ -125,6 +125,7 @@ RectTransform:
   - {fileID: 7042708939576806788}
   - {fileID: 7287691806885839956}
   - {fileID: 1059349486317029921}
+  - {fileID: 1217819425183827895}
   m_Father: {fileID: 0}
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   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
@@ -216,9 +217,11 @@ MonoBehaviour:
   _wood: 30
   _rock: 0
   _food: 0
+  _cooldownInSeconds: 3
   _foodLabel: {fileID: 7287691807974070417}
   _woodLabel: {fileID: 5391726344234182609}
   _rockLabel: {fileID: 5035571921358210154}
+  _cooldownIndicator: {fileID: 1268446567353174613}
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 CanvasGroup:
@@ -1178,6 +1181,82 @@ MonoBehaviour:
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   m_UseSpriteMesh: 0
   m_PixelsPerUnitMultiplier: 1
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Assets/Scripts/Drag&Drop/UnitPlaceholder.cs

@@ -8,10 +8,13 @@ public abstract class UnitPlaceholder : DraggablePlaceholder
     public override void Place()
     {
         ResourceManager.Instance.Remove(Rock, Wood, Food);
+        WasPlaced?.Invoke(this);
     }
+
     public override bool CanBePlacedHere()
     {
         return base.CanBePlacedHere() && ResourceManager.Instance.EnoughFor(Rock, Wood, Food) 
             && !LevelManager.Instance.Has<ILevelObject>(obj => obj.Position.IsContainedIn(transform.position));
     }
+    public event System.Action<UnitPlaceholder> WasPlaced;
 }

Assets/Scripts/Drag&Drop/UnitPlacementButton.cs

@@ -1,3 +1,5 @@
+using GatherAndDefend.Events;
+using System.Collections;
 using TMPro;
 using UnityEngine;
 using UnityEngine.EventSystems;
@@ -14,6 +16,8 @@ public abstract class UnitPlacementButton : PlacementButton
     protected int _rock;
     [SerializeField]
     protected int _food;
+    [SerializeField]
+    protected int _cooldownInSeconds = 3;
 
     [SerializeField]
     private TMP_Text _foodLabel;
@@ -22,6 +26,9 @@ public abstract class UnitPlacementButton : PlacementButton
     [SerializeField]
     private TMP_Text _rockLabel;
 
+    [SerializeField]
+    protected Image _cooldownIndicator;
+    protected bool _lockedByCooldown;
 
     protected override void Update()
     {
@@ -44,6 +51,36 @@ public abstract class UnitPlacementButton : PlacementButton
             placeHolder.Rock = _rock;
             placeHolder.Wood = _wood;
             placeHolder.Food = _food;
+            placeHolder.WasPlaced += HandleCooldown;
         }
+        
+    }
+
+    private void HandleCooldown(UnitPlaceholder unitPlaceholder)
+    {
+        unitPlaceholder.WasPlaced -= HandleCooldown;
+        StartCoroutine(HandleCooldownCoroutine());
+            
+
+        IEnumerator HandleCooldownCoroutine() 
+        {
+            var countDown = 0f;
+            _lockedByCooldown = true;
+            _cooldownIndicator.gameObject.SetActive(true);
+            while (countDown < _cooldownInSeconds)
+            {
+                countDown += Time.deltaTime;
+                var percentDone = countDown / _cooldownInSeconds;
+                _cooldownIndicator.fillAmount = 1 - percentDone;
+                yield return null;
+            }
+            _cooldownIndicator.gameObject.SetActive(false);
+            _lockedByCooldown = false;
+        }
+    }
+
+    protected override bool CanPlace()
+    {
+        return base.CanPlace() && !_lockedByCooldown;
     }
 }