Accessor interfaces can't also contain ducks

A design limitation in mixin means that if you want to use
@mixin interfaces, they can **only** contain @Accessor and @invoker
public members.

If you want to use ordinary "duck" wrappers, you have to put your
accessors in the main mixin class. :-(

Author: LeafHacker

src/main/java/me/zero/client/load/mixin/MixinMinecraft.java

@@ -28,7 +28,11 @@
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.client.multiplayer.WorldClient;
+import net.minecraft.util.Session;
+import net.minecraft.util.Timer;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+import org.spongepowered.asm.mixin.gen.Invoker;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.ModifyVariable;
@@ -48,6 +52,25 @@
 @Mixin(Minecraft.class)
 public abstract class MixinMinecraft implements IMinecraft {
 
+    @Accessor @Override public abstract Timer getTimer();
+    @Accessor @Override public abstract void setSession(Session session);
+    @Accessor @Override public abstract void setRightClickDelayTimer(int delay);
+
+    @Invoker("clickMouse") @Override public abstract void leftClickMouse();
+    @Invoker("rightClickMouse") @Override public abstract void rightClickMouse();
+    @Invoker("middleClickMouse") @Override public abstract void middleClickMouse();
+
+    @Override
+    public void clickMouse(ClickEvent.MouseButton button) {
+        // IF statements are required because Mixin doesn't support SWITCH
+        if (button == LEFT)
+            leftClickMouse();
+        if (button == RIGHT)
+            rightClickMouse();
+        if (button == MIDDLE)
+            middleClickMouse();
+    }
+
     @Inject(method = "runTick", at = @At("HEAD"))
     public void onTick(CallbackInfo ci) {
         ClientAPI.EVENT_BUS.post(new TickEvent());
@@ -139,15 +162,4 @@ public void shutdown(CallbackInfo ci) {
         if (event.isCancelled())
             ci.cancel();
     }
-
-    @Override
-    public void clickMouse(ClickEvent.MouseButton button) {
-        // IF statements are required because Mixin doesn't support SWITCH
-        if (button == LEFT)
-            leftClickMouse();
-        if (button == RIGHT)
-            rightClickMouse();
-        if (button == MIDDLE)
-            middleClickMouse();
-    }
 }

src/main/java/me/zero/client/load/mixin/wrapper/IMinecraft.java

@@ -17,47 +17,54 @@
 package me.zero.client.load.mixin.wrapper;
 
 import me.zero.client.api.event.defaults.ClickEvent;
-import net.minecraft.client.Minecraft;
 import net.minecraft.util.Session;
 import net.minecraft.util.Timer;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.gen.Accessor;
-import org.spongepowered.asm.mixin.gen.Invoker;
 
 /**
  * @author Brady
  * @since 2/20/2017 12:00 PM
  */
-@Mixin(Minecraft.class)
 public interface IMinecraft {
 
     /**
      * @return Returns the Game's Timer
      */
-    @Accessor Timer getTimer();
+    Timer getTimer();
 
     /**
      * Sets the game's session
      *
      * @param session The new Session
      */
-    @Accessor void setSession(Session session);
+    void setSession(Session session);
 
     /**
      * Sets the right click delay timer
      *
      * @param delay The new right click delay
      */
-    @Accessor void setRightClickDelayTimer(int delay);
-
-    @Invoker("clickMouse") void leftClickMouse();
-    @Invoker("rightClickMouse") void rightClickMouse();
-    @Invoker("middleClickMouse") void middleClickMouse();
+    void setRightClickDelayTimer(int delay);
 
     /**
      * Clicks a mouse button
      *
-     * @param button The button
+     * @param button The button to click (LEFT, MIDDLE, RIGHT)
      */
     void clickMouse(ClickEvent.MouseButton button);
+
+    /**
+     * Click the left mouse button
+     */
+    void leftClickMouse();
+
+    /**
+     * Click the right mouse button
+     */
+    void rightClickMouse();
+
+    /**
+     * Click the middle mouse button
+     */
+    void middleClickMouse();
+
 }

src/main/resources/mixins.wrapper.capi.json

@@ -9,7 +9,6 @@
     "IGameType",
     "IItemRenderer",
     "IKeyBinding",
-    "IMinecraft",
     "IPlayerControllerMP",
     "IRenderManager",
     "IShaderGroup",