initial implementation

MagicStorageVoidBag.cs

@@ -1,8 +1,57 @@
+using Mono.Cecil.Cil;
+using Mono.Cecil;
+using MonoMod.Cil;
 using Terraria.ModLoader;
+using MagicStorageVoidBag.Items;
 
-namespace MagicStorageVoidBag
-{
-	public class MagicStorageVoidBag : Mod
-	{
-	}
+namespace MagicStorageVoidBag {
+    public class MagicStorageVoidBag : Mod {
+        public override void Load() {
+            IL.MagicStorage.Components.StorageHeart.RightClick += HeartRightClickPatch;
+        }
+
+        public override void Unload() {
+            base.Unload();
+        }
+
+        // Patch MagicStorage IL to change the Storage Heart right click handler to also work with
+        //  MSVoidBag.
+        private void HeartRightClickPatch(ILContext il) {
+            if (il == null) {
+                Logger.Error("ILContext null!");
+                return;
+            }
+
+            Logger.Debug("Patching MagicStorage IL...");
+
+            var c = new ILCursor(il);
+
+            if (!c.TryGotoNext(i => i.MatchCallOrCallvirt("Terraria.ModLoader.ModContent", "ItemType"))) {
+                Logger.Warn("IL patching failed! :(");
+            }
+            c = c.GotoPrev().GotoPrev();
+
+            var c2 = c.Clone();
+
+            // copy IL up to call
+            while (c2.Next.OpCode != OpCodes.Call) {
+                if (c2.Next.Operand != null) {
+                    c.Emit(c2.Next.OpCode, c2.Next.Operand);
+                } else {
+                    c.Emit(c2.Next.OpCode);
+                }
+
+                c2 = c2.GotoNext();
+            }
+
+            var method = typeof(ModContent).GetMethod("ItemType").MakeGenericMethod(typeof(MSVoidBag));
+
+            c.Emit(c2.Next.OpCode, method);
+            c2.GotoNext();
+            c.Emit(c2.Next.OpCode, c2.Next.Operand);
+
+            Logger.Debug("...MagicStorage IL patching complete!");
+        }
+
+    }
 }