I have a GameManager Singleton script, which a public property:
public bool IsDroneDeployed = false
When I set this value to true/false using a script... it seems these two versions of the value are different.
IsDroneDeployed = !IsDroneDeployed;
//GameManager.Instance.IsDroneDeployed
If I set the first one and log it out, the "instance" version isn't updated.
I would think when I'm in the GameManager, since it's a singleton I could just directly manipulate the variable, is that not the case?
Here's part of the code to show what I'm talking about...
public class GameManager : Singleton<GameManager>
{
public bool IsDroneDeployed = false;
public void LoadMapViewScene() //This is the action I kick off from an onClick event on a panel
{
Debug.Log($"=============Loading Map View");
//LoadLevel(MapViewSceneName);
SwitchDroneDeployedValue();
}
public void SwitchDroneDeployedValue()
{
Debug.Log($"============= Switching IsDroneDeployed Value BEFORE Switch: {IsDroneDeployed}");
Debug.Log($"============= Switching GameManager.Instance.IsDroneDeployed value BEFORE Switch: {GameManager.Instance.IsDroneDeployed}");
IsDroneDeployed = !IsDroneDeployed;
//GameManager.Instance.IsDroneDeployed = !GameManager.Instance.IsDroneDeployed;
Debug.Log($"============= Switching IsDroneDeployed value AFTER Switch: {IsDroneDeployed}");
Debug.Log($"============= Switching GameManager.Instance.IsDroneDeployed value AFTER Switch: {GameManager.Instance.IsDroneDeployed}");
}
}
This results in this log..
============= Switching IsDroneDeployed Value BEFORE Switch: False
============= Switching GameManager.Instance.IsDroneDeployed value BEFORE Switch: False
============= Switching IsDroneDeployed value AFTER Switch: True
============= Switching GameManager.Instance.IsDroneDeployed value AFTER Switch: False
You can see that the "Instance" version doesn't get updated. Why is that? Only if I update GameManager.Instance.IsDroneDeployed directly
(GameManager.Instance.IsDroneDeployed = !GameManager.Instance.IsDroneDeployed;)
it updates, but that seems wrong to me because the code is already in this class.
==== Adding the Singleton code as requested:
public class Singleton<T> : MonoBehaviour where T : Component
{
//The instance is accessible only by the getter
private static T _instance;
public static bool IsInitialized => Instance != null; //Check if the instance exists already
public static T Instance
{
get
{
if(_instance == null)
{
Debug.Log("Looking for existing instance of " + typeof(T).Name + " in memory to return");
//Making sure there not other instances of same type in Memory
_instance = FindObjectOfType<T>();
if(_instance == null)
{
Debug.Log("Instance not found.. creating instance of " + typeof(T).Name + " in memory");
GameObject obj = new GameObject();
obj.name = typeof(T).Name;
_instance = obj.AddComponent<T>();
}
}
return _instance;
}
}
public virtual void Awake()
{
if(_instance == null)
{
//If null, then this instance is now the singleton of the assigned type
_instance = this as T;
//making sure this instance is kept persisted across screens
DontDestroyOnLoad(this.gameObject);
}
else
{
Debug.Log("Imposter of " + typeof(T).Name + " found. Destroying! pew pew pew.. boom!");
//Destroy the imposter!
Destroy(gameObject);
}
}
protected virtual void OnDestroy()
{
if (_instance == this)
{
_instance = null;
}
}
}
This is the tree of: this.gameObject:
- this.gameObject "GameManager (UnityEngine.GameObject)" UnityEngine.GameObject
- base "GameManager (UnityEngine.GameObject)" UnityEngine.Object
hideFlags None UnityEngine.HideFlags
name "GameManager" string
- Static members
- Non-Public members
OffsetOfInstanceIDInCPlusPlusObject -1 int
cloneDestroyedMessage "Instantiate failed because the clone was destroyed during creation. This can happen if DestroyImmediate is called in MonoBehaviour.Awake." string
objectIsNullMessage "The Object you want to instantiate is null." string
- Non-Public members
m_CachedPtr 0x1e770033870 System.IntPtr
m_InstanceID -1186 int
m_UnityRuntimeErrorString null string
activeInHierarchy true bool
activeSelf true bool
audio System.NotSupportedException: audio property has been deprecated UnityEngine.Component
constantForce System.NotSupportedException: constantForce property has been deprecated UnityEngine.Component
+ gameObject "GameManager (UnityEngine.GameObject)" UnityEngine.GameObject
isStatic false bool
layer 0 int
light System.NotSupportedException: light property has been deprecated UnityEngine.Component
renderer System.NotSupportedException: renderer property has been deprecated UnityEngine.Component
rigidbody2D System.NotSupportedException: rigidbody2D property has been deprecated UnityEngine.Component
- scene {UnityEngine.SceneManagement.Scene} UnityEngine.SceneManagement.Scene
buildIndex -1 int
handle -12 int
isDirty false bool
isLoaded true bool
isSubScene false bool
name "DontDestroyOnLoad" string
path "DontDestroyOnLoad" string
rootCount 4 int
- Non-Public members
dirtyID 0 int
guid "00000000000000000000000000000000" string
loadingState Loaded UnityEngine.SceneManagement.Scene.LoadingState
m_Handle -12 int
tag "Untagged" string
- transform "GameManager (UnityEngine.Transform)" UnityEngine.Transform
+ base "GameManager (UnityEngine.Transform)" UnityEngine.Component
childCount 0 int
+ eulerAngles "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ forward "(0.0, 0.0, 1.0)" UnityEngine.Vector3
hasChanged true bool
hierarchyCapacity 1 int
hierarchyCount 1 int
+ localEulerAngles "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ localPosition "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ localRotation "(0.0, 0.0, 0.0, 1.0)" UnityEngine.Quaternion
+ localScale "(1.0, 1.0, 1.0)" UnityEngine.Vector3
+ localToWorldMatrix "1.00000\t0.00000\t0.00000\t0.00000\n0.00000\t1.00000\t0.00000\t0.00000\n0.00000\t0.00000\t1.00000\t0.00000\n0.00000\t0.00000\t0.00000\t1.00000\n" UnityEngine.Matrix4x4
+ lossyScale "(1.0, 1.0, 1.0)" UnityEngine.Vector3
parent null UnityEngine.Transform
+ position "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ right "(1.0, 0.0, 0.0)" UnityEngine.Vector3
+ root "GameManager (UnityEngine.Transform)" UnityEngine.Transform
+ rotation "(0.0, 0.0, 0.0, 1.0)" UnityEngine.Quaternion
+ up "(0.0, 1.0, 0.0)" UnityEngine.Vector3
+ worldToLocalMatrix "1.00000\t0.00000\t0.00000\t0.00000\n0.00000\t1.00000\t0.00000\t0.00000\n0.00000\t0.00000\t1.00000\t0.00000\n0.00000\t0.00000\t0.00000\t1.00000\n" UnityEngine.Matrix4x4
+ Non-Public members
- Non-Public members
isStaticBatchable false bool
This is the tree of GameManager.Instance.gameObject
- GameManager.Instance.gameObject "GameManager (UnityEngine.GameObject)" UnityEngine.GameObject
- base "GameManager (UnityEngine.GameObject)" UnityEngine.Object
hideFlags None UnityEngine.HideFlags
name "GameManager" string
- Static members
- Non-Public members
OffsetOfInstanceIDInCPlusPlusObject -1 int
cloneDestroyedMessage "Instantiate failed because the clone was destroyed during creation. This can happen if DestroyImmediate is called in MonoBehaviour.Awake." string
objectIsNullMessage "The Object you want to instantiate is null." string
- Non-Public members
m_CachedPtr 0x1e770033870 System.IntPtr
m_InstanceID -1186 int
m_UnityRuntimeErrorString null string
activeInHierarchy true bool
activeSelf true bool
audio System.NotSupportedException: audio property has been deprecated UnityEngine.Component
constantForce System.NotSupportedException: constantForce property has been deprecated UnityEngine.Component
+ gameObject "GameManager (UnityEngine.GameObject)" UnityEngine.GameObject
isStatic false bool
layer 0 int
light System.NotSupportedException: light property has been deprecated UnityEngine.Component
renderer System.NotSupportedException: renderer property has been deprecated UnityEngine.Component
rigidbody2D System.NotSupportedException: rigidbody2D property has been deprecated UnityEngine.Component
- scene {UnityEngine.SceneManagement.Scene} UnityEngine.SceneManagement.Scene
buildIndex -1 int
handle -12 int
isDirty false bool
isLoaded true bool
isSubScene false bool
name "DontDestroyOnLoad" string
path "DontDestroyOnLoad" string
rootCount 4 int
- Non-Public members
dirtyID 0 int
guid "00000000000000000000000000000000" string
loadingState Loaded UnityEngine.SceneManagement.Scene.LoadingState
m_Handle -12 int
tag "Untagged" string
- transform "GameManager (UnityEngine.Transform)" UnityEngine.Transform
+ base "GameManager (UnityEngine.Transform)" UnityEngine.Component
childCount 0 int
+ eulerAngles "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ forward "(0.0, 0.0, 1.0)" UnityEngine.Vector3
hasChanged true bool
hierarchyCapacity 1 int
hierarchyCount 1 int
+ localEulerAngles "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ localPosition "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ localRotation "(0.0, 0.0, 0.0, 1.0)" UnityEngine.Quaternion
+ localScale "(1.0, 1.0, 1.0)" UnityEngine.Vector3
+ localToWorldMatrix "1.00000\t0.00000\t0.00000\t0.00000\n0.00000\t1.00000\t0.00000\t0.00000\n0.00000\t0.00000\t1.00000\t0.00000\n0.00000\t0.00000\t0.00000\t1.00000\n" UnityEngine.Matrix4x4
+ lossyScale "(1.0, 1.0, 1.0)" UnityEngine.Vector3
parent null UnityEngine.Transform
+ position "(0.0, 0.0, 0.0)" UnityEngine.Vector3
+ right "(1.0, 0.0, 0.0)" UnityEngine.Vector3
+ root "GameManager (UnityEngine.Transform)" UnityEngine.Transform
+ rotation "(0.0, 0.0, 0.0, 1.0)" UnityEngine.Quaternion
+ up "(0.0, 1.0, 0.0)" UnityEngine.Vector3
+ worldToLocalMatrix "1.00000\t0.00000\t0.00000\t0.00000\n0.00000\t1.00000\t0.00000\t0.00000\n0.00000\t0.00000\t1.00000\t0.00000\n0.00000\t0.00000\t0.00000\t1.00000\n" UnityEngine.Matrix4x4
+ Non-Public members
- Non-Public members
isStaticBatchable false bool
this.gameObjectandGameManager.Instance.gameObjectto find out which instance is stored as the global "current" instance, and which instance is currently executing your code. \$\endgroup\$