Add StarMap hook for after onFrame

* Fix package release

* Onframepatch clean (#47)

* Do not try to unload the assembly load contexts (#44)

* Program.OnFrame Harmony patch

* Updated the API readme

---------

Co-authored-by: KlaasWhite <45828001+KlaasWhite@users.noreply.github.com>

---------

Co-authored-by: mihe <mihemihe@hotmail.com>

Author: KlaasWhite

StarMap.API/OnFrameAttributes.cs

@@ -0,0 +1,46 @@
+using System.Reflection;
+
+namespace StarMap.API
+{
+    /// <summary>
+    /// Methods marked with this attribute will be called after KSA Program.OnFrame is called.
+    /// </summary>
+    /// <remarks>
+    /// Methods using this attribute must match the following signature:
+    ///
+    /// <code>
+    /// public void MethodName(double currentPlayerTime, double dtPlayer);
+    /// </code>
+    ///
+    /// Parameter requirements:
+    /// <list type="bullet">
+    ///   <item>
+    ///     <description>
+    ///       <paramref name="currentPlayerTime"/>
+    ///     </description>
+    ///   </item>
+    ///   <item>
+    ///     <description>
+    ///       <paramref name="dtPlayer"/>
+    ///     </description>
+    ///   </item>
+    /// </list>
+    /// 
+    /// Requirements:
+    /// <list type="bullet">
+    ///   <item><description>Return type must be <see cref="void"/>.</description></item>
+    ///   <item><description>Method must be an instance method (non-static).</description></item>
+    /// </list>
+    /// </remarks>
+    public sealed class StarMapAfterOnFrameAttribute : StarMapMethodAttribute
+    {
+        public override bool IsValidSignature(MethodInfo method)
+        {
+            return method.ReturnType == typeof(void) &&
+                   method.GetParameters().Length == 2 &&
+                   method.GetParameters()[0].ParameterType == typeof(double) &&
+                   method.GetParameters()[1].ParameterType == typeof(double);
+
+        }
+    }
+}

StarMap.API/README.md

@@ -14,3 +14,4 @@ Any method within this class that has any of the attributes will used, so if two
 -   StarMapUnload: Called when KSA is unloaded.
 -   StarMapBeforeGui: Called just before KSA starts drawing its Ui.
 -   StarMapAfterGui: Called after KSA has drawn its Ui.
+-   StarMapAfterOnFrame: Called after KSA calls Program.OnFrame

StarMap.Core/Patches/ProgramPatcher.cs

@@ -8,6 +8,7 @@ namespace StarMap.Core.Patches
     internal static class ProgramPatcher
     {
         private const string OnDrawUiMethodName = "OnDrawUi";
+        private const string OnFrameMethodName = "OnFrame";
 
         [HarmonyPatch(OnDrawUiMethodName)]
         [HarmonyPrefix]
@@ -32,5 +33,17 @@ public static void AfterOnDrawUi(double dt)
                 method.Invoke(@object, [dt]);
             }
         }
+
+        [HarmonyPatch(OnFrameMethodName)]
+        [HarmonyPostfix]
+        public static void AfterOnFrame(double currentPlayerTime, double dtPlayer)
+        {
+            var methods = StarMapCore.Instance?.LoadedMods.Mods.Get<StarMapAfterOnFrameAttribute>() ?? [];
+
+            foreach (var (_, @object, method) in methods)
+            {
+                method.Invoke(@object, new object[] { currentPlayerTime, dtPlayer });
+            }
+        }
     }
 }