diff --git a/ScriptCore/Entity.cs b/ScriptCore/Entity.cs
index d1c85b9..8d22b7a 100644
--- a/ScriptCore/Entity.cs
+++ b/ScriptCore/Entity.cs
@@ -1,10 +1,12 @@
using System;
+using System.Collections.Generic;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.CompilerServices;
using GlitchyEngine.Core;
using GlitchyEngine.Extensions;
using GlitchyEngine.Physics;
+using System.Diagnostics.CodeAnalysis;
namespace GlitchyEngine;
@@ -102,6 +104,19 @@ public class Entity : EngineObject
return null;
}
+ ///
+ /// Gets the component with the specified type.
+ ///
+ /// The type of the component to get.
+ /// If the entity has a of type then contains a reference to this component; otherwise it will contain after the method returned.
+ /// , if a component was retrieved; otherwise .
+ public bool TryGetComponent([MaybeNullWhen(false)] out T component) where T : Component, new()
+ {
+ component = GetComponent();
+
+ return component != null;
+ }
+
///
/// Gets the component with the given type.
///
diff --git a/ScriptCore/Extensions/NullableAttributes.cs b/ScriptCore/Extensions/NullableAttributes.cs
new file mode 100644
index 0000000..6e55499
--- /dev/null
+++ b/ScriptCore/Extensions/NullableAttributes.cs
@@ -0,0 +1,208 @@
+// https://github.com/dotnet/runtime/blob/527f9ae88a0ee216b44d556f9bdc84037fe0ebda/src/libraries/System.Private.CoreLib/src/System/Diagnostics/CodeAnalysis/NullableAttributes.cs
+
+#pragma warning disable
+#define INTERNAL_NULLABLE_ATTRIBUTES
+
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace System.Diagnostics.CodeAnalysis
+{
+#if NETSTANDARD2_0 || NETCOREAPP2_0 || NETCOREAPP2_1 || NETCOREAPP2_2 || NET45 || NET451 || NET452 || NET46 || NET461 || NET462 || NET47 || NET471 || NET472 || NET48
+ /// Specifies that null is allowed as an input even if the corresponding type disallows it.
+ [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class AllowNullAttribute : Attribute
+ { }
+
+ /// Specifies that null is disallowed as an input even if the corresponding type allows it.
+ [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class DisallowNullAttribute : Attribute
+ { }
+
+ /// Specifies that an output may be null even if the corresponding type disallows it.
+ [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class MaybeNullAttribute : Attribute
+ { }
+
+ /// Specifies that an output will not be null even if the corresponding type allows it. Specifies that an input argument was not null when the call returns.
+ [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class NotNullAttribute : Attribute
+ { }
+
+ /// Specifies that when a method returns , the parameter may be null even if the corresponding type disallows it.
+ [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class MaybeNullWhenAttribute : Attribute
+ {
+ /// Initializes the attribute with the specified return value condition.
+ ///
+ /// The return value condition. If the method returns this value, the associated parameter may be null.
+ ///
+ public MaybeNullWhenAttribute(bool returnValue) => ReturnValue = returnValue;
+
+ /// Gets the return value condition.
+ public bool ReturnValue { get; }
+ }
+
+ /// Specifies that when a method returns , the parameter will not be null even if the corresponding type allows it.
+ [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class NotNullWhenAttribute : Attribute
+ {
+ /// Initializes the attribute with the specified return value condition.
+ ///
+ /// The return value condition. If the method returns this value, the associated parameter will not be null.
+ ///
+ public NotNullWhenAttribute(bool returnValue) => ReturnValue = returnValue;
+
+ /// Gets the return value condition.
+ public bool ReturnValue { get; }
+ }
+
+ /// Specifies that the output will be non-null if the named parameter is non-null.
+ [AttributeUsage(AttributeTargets.Parameter | AttributeTargets.Property | AttributeTargets.ReturnValue, AllowMultiple = true, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class NotNullIfNotNullAttribute : Attribute
+ {
+ /// Initializes the attribute with the associated parameter name.
+ ///
+ /// The associated parameter name. The output will be non-null if the argument to the parameter specified is non-null.
+ ///
+ public NotNullIfNotNullAttribute(string parameterName) => ParameterName = parameterName;
+
+ /// Gets the associated parameter name.
+ public string ParameterName { get; }
+ }
+
+ /// Applied to a method that will never return under any circumstance.
+ [AttributeUsage(AttributeTargets.Method, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class DoesNotReturnAttribute : Attribute
+ { }
+
+ /// Specifies that the method will not return if the associated Boolean parameter is passed the specified value.
+ [AttributeUsage(AttributeTargets.Parameter, Inherited = false)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class DoesNotReturnIfAttribute : Attribute
+ {
+ /// Initializes the attribute with the specified parameter value.
+ ///
+ /// The condition parameter value. Code after the method will be considered unreachable by diagnostics if the argument to
+ /// the associated parameter matches this value.
+ ///
+ public DoesNotReturnIfAttribute(bool parameterValue) => ParameterValue = parameterValue;
+
+ /// Gets the condition parameter value.
+ public bool ParameterValue { get; }
+ }
+#endif
+
+#if NETSTANDARD2_0 || NETCOREAPP2_0 || NETCOREAPP2_1 || NETCOREAPP2_2 || NETCOREAPP3_0 || NETCOREAPP3_1 || NET45 || NET451 || NET452 || NET46 || NET461 || NET462 || NET47 || NET471 || NET472 || NET48
+ /// Specifies that the method or property will ensure that the listed field and property members have not-null values.
+ [AttributeUsage(AttributeTargets.Method | AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class MemberNotNullAttribute : Attribute
+ {
+ /// Initializes the attribute with a field or property member.
+ ///
+ /// The field or property member that is promised to be not-null.
+ ///
+ public MemberNotNullAttribute(string member) => Members = new[] { member };
+
+ /// Initializes the attribute with the list of field and property members.
+ ///
+ /// The list of field and property members that are promised to be not-null.
+ ///
+ public MemberNotNullAttribute(params string[] members) => Members = members;
+
+ /// Gets field or property member names.
+ public string[] Members { get; }
+ }
+
+ /// Specifies that the method or property will ensure that the listed field and property members have not-null values when returning with the specified return value condition.
+ [AttributeUsage(AttributeTargets.Method | AttributeTargets.Property, Inherited = false, AllowMultiple = true)]
+#if SYSTEM_PRIVATE_CORELIB
+ public
+#else
+ internal
+#endif
+ sealed class MemberNotNullWhenAttribute : Attribute
+ {
+ /// Initializes the attribute with the specified return value condition and a field or property member.
+ ///
+ /// The return value condition. If the method returns this value, the associated parameter will not be null.
+ ///
+ ///
+ /// The field or property member that is promised to be not-null.
+ ///
+ public MemberNotNullWhenAttribute(bool returnValue, string member)
+ {
+ ReturnValue = returnValue;
+ Members = new[] { member };
+ }
+
+ /// Initializes the attribute with the specified return value condition and list of field and property members.
+ ///
+ /// The return value condition. If the method returns this value, the associated parameter will not be null.
+ ///
+ ///
+ /// The list of field and property members that are promised to be not-null.
+ ///
+ public MemberNotNullWhenAttribute(bool returnValue, params string[] members)
+ {
+ ReturnValue = returnValue;
+ Members = members;
+ }
+
+ /// Gets the return value condition.
+ public bool ReturnValue { get; }
+
+ /// Gets field or property member names.
+ public string[] Members { get; }
+ }
+#endif
+}