add error if some SMAPI DLLs have mismatched versions

1 files changed, 16 insertions, 0 deletions

diff --git a/src/SMAPI/Program.cs b/src/SMAPI/Program.cs
index 0257a03e..e6e51ac6 100644
--- a/src/SMAPI/Program.cs
+++ b/src/SMAPI/Program.cs
@@ -5,6 +5,7 @@ using System.Reflection;
 using System.Threading;
 using StardewModdingAPI.Framework;
 using StardewModdingAPI.Toolkit.Framework;
+using StardewModdingAPI.Toolkit.Serialization.Models;
 
 namespace StardewModdingAPI
 {
@@ -32,6 +33,7 @@ namespace StardewModdingAPI
                 AppDomain.CurrentDomain.AssemblyResolve += Program.CurrentDomain_AssemblyResolve;
                 Program.AssertGamePresent();
                 Program.AssertGameVersion();
+                Program.AssertSmapiVersions();
                 Program.Start(args);
             }
             catch (BadImageFormatException ex) when (ex.FileName == "StardewValley" || ex.FileName == "Stardew Valley") // don't use EarlyConstants.GameAssemblyName, since we want to check both possible names
@@ -122,6 +124,20 @@ namespace StardewModdingAPI
 #endif
         }
 
+        /// <summary>Assert that the versions of all SMAPI components are correct.</summary>
+        /// <remarks>Players sometimes have mismatched versions (particularly when installed through Vortex), which can cause some very confusing bugs without this check.</remarks>
+        private static void AssertSmapiVersions()
+        {
+            // SMAPI toolkit
+            foreach (var type in new[] { typeof(IManifest), typeof(Manifest) })
+            {
+                Assembly assembly = type.Assembly;
+                var assemblyVersion = new SemanticVersion(assembly.GetName().Version);
+                if (!assemblyVersion.Equals(Constants.ApiVersion))
+                    Program.PrintErrorAndExit($"Oops! The 'smapi-internal/{assembly.GetName().Name}.dll' file is version {assemblyVersion} instead of the required {Constants.ApiVersion}. SMAPI doesn't seem to be installed correctly.");
+            }
+        }
+
         /// <summary>Initialize SMAPI and launch the game.</summary>
         /// <param name="args">The command-line arguments.</param>
         /// <remarks>This method is separate from <see cref="Main"/> because that can't contain any references to assemblies loaded by <see cref="CurrentDomain_AssemblyResolve"/> (e.g. via <see cref="Constants"/>), or Mono will incorrectly show an assembly resolution error before assembly resolution is set up.</remarks>