#if UNITY_EDITOR
using System;
using System.Linq;
using UnityEditor;
#if UNITY_6000_0_OR_NEWER
using System.Reflection;
using UnityEditor.Build.Profile;
#endif
namespace UnityEngine.InputSystem.Editor
{
internal static class EditorPlayerSettingHelpers
{
/// <summary>
/// Whether the backends for the new input system are enabled in the
/// player settings for the Unity runtime.
/// </summary>
public static bool newSystemBackendsEnabled
{
get
{
var property = GetPropertyOrNull(kActiveInputHandler);
return property == null || ActiveInputHandlerToTuple(property.intValue).newSystemEnabled;
}
set
{
var property = GetPropertyOrNull(kActiveInputHandler);
if (property != null)
{
var tuple = ActiveInputHandlerToTuple(property.intValue);
tuple.newSystemEnabled = value;
property.intValue = TupleToActiveInputHandler(tuple);
property.serializedObject.ApplyModifiedProperties();
}
else
{
Debug.LogError($"Cannot find '{kActiveInputHandler}' in player settings");
}
}
}
/// <summary>
/// Whether the backends for the old input system are enabled in the
/// player settings for the Unity runtime.
/// </summary>
public static bool oldSystemBackendsEnabled
{
get
{
var property = GetPropertyOrNull(kActiveInputHandler);
return property == null || ActiveInputHandlerToTuple(property.intValue).oldSystemEnabled;
}
set
{
var property = GetPropertyOrNull(kActiveInputHandler);
if (property != null)
{
var tuple = ActiveInputHandlerToTuple(property.intValue);
tuple.oldSystemEnabled = value;
property.intValue = TupleToActiveInputHandler(tuple);
property.serializedObject.ApplyModifiedProperties();
}
else
{
Debug.LogError($"Cannot find '{kActiveInputHandler}' in player settings");
}
}
}
private const string kActiveInputHandler = "activeInputHandler";
private enum InputHandler
{
OldInputManager = 0,
NewInputSystem = 1,
InputBoth = 2
};
private static (bool newSystemEnabled, bool oldSystemEnabled) ActiveInputHandlerToTuple(int value)
{
switch ((InputHandler)value)
{
case InputHandler.OldInputManager:
return (false, true);
case InputHandler.NewInputSystem:
return (true, false);
case InputHandler.InputBoth:
return (true, true);
default:
throw new ArgumentException($"Invalid value of 'activeInputHandler' setting: {value}");
}
}
private static int TupleToActiveInputHandler((bool newSystemEnabled, bool oldSystemEnabled) tuple)
{
switch (tuple)
{
case (false, true):
return (int)InputHandler.OldInputManager;
case (true, false):
return (int)InputHandler.NewInputSystem;
case (true, true):
return (int)InputHandler.InputBoth;
// Special case, when using two separate bool's of the public API here,
// it's possible to end up with both settings in false, for example:
// - EditorPlayerSettingHelpers.newSystemBackendsEnabled = true;
// - EditorPlayerSettingHelpers.oldSystemBackendsEnabled = false;
// - EditorPlayerSettingHelpers.newSystemBackendsEnabled = false;
// - EditorPlayerSettingHelpers.oldSystemBackendsEnabled = true;
// On line 3 both settings will be false, even if we set old system to true on line 4.
case (false, false):
return (int)InputHandler.OldInputManager;
}
}
private static SerializedProperty GetPropertyOrNull(string name)
{
#if UNITY_6000_0_OR_NEWER
// HOTFIX: the code below works around an issue causing an infinite reimport loop
// this will be replaced by a call to an API in the editor instead of using reflection once it is available
var buildProfileType = typeof(BuildProfile);
var globalPlayerSettingsField = buildProfileType.GetField("s_GlobalPlayerSettings", BindingFlags.Static | BindingFlags.NonPublic);
if (globalPlayerSettingsField == null)
{
Debug.LogError($"Could not find global player settings field in build profile when trying to get property {name}. Please try to update the Input System package.");
return null;
}
var playerSettings = (PlayerSettings)globalPlayerSettingsField.GetValue(null);
var activeBuildProfile = BuildProfile.GetActiveBuildProfile();
if (activeBuildProfile != null)
{
var playerSettingsOverrideField = buildProfileType.GetField("m_PlayerSettings", BindingFlags.Instance | BindingFlags.NonPublic);
if (playerSettingsOverrideField == null)
{
Debug.LogError($"Could not find player settings override field in build profile when trying to get property {name}. Please try to update the Input System package.");
return null;
}
var playerSettingsOverride = (PlayerSettings)playerSettingsOverrideField.GetValue(activeBuildProfile);
if (playerSettingsOverride != null)
playerSettings = playerSettingsOverride;
}
#else
var playerSettings = Resources.FindObjectsOfTypeAll<PlayerSettings>().FirstOrDefault();
#endif
if (playerSettings == null)
return null;
var playerSettingsObject = new SerializedObject(playerSettings);
return playerSettingsObject.FindProperty(name);
}
}
}
#endif // UNITY_EDITOR