Fix unfocused clickgui issue (#417)

Author: rfresh2

src/main/java/com/lambda/mixin/accessor/gui/AccessorGuiScreen.java

@@ -0,0 +1,12 @@
+package com.lambda.mixin.accessor.gui;
+
+import net.minecraft.client.gui.GuiScreen;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+@Mixin(value = GuiScreen.class)
+public interface AccessorGuiScreen {
+
+    @Accessor("eventButton")
+    void setEventButton(final int eventButton);
+}

src/main/kotlin/com/lambda/client/gui/AbstractLambdaGui.kt

@@ -15,6 +15,7 @@ import com.lambda.client.util.graphics.font.FontRenderAdapter
 import com.lambda.client.util.math.Vec2d
 import com.lambda.client.util.math.Vec2f
 import com.lambda.client.util.threads.safeListener
+import com.lambda.mixin.accessor.gui.AccessorGuiScreen
 import net.minecraft.client.gui.GuiScreen
 import net.minecraft.client.gui.ScaledResolution
 import net.minecraft.client.renderer.GlStateManager
@@ -140,6 +141,7 @@ abstract class AbstractLambdaGui<S : SettingWindow<*>, E : Any> : GuiScreen() {
     open fun onDisplayed() {
         lastClickedWindow = null
         lastEventButton = -1
+        (this as AccessorGuiScreen).setEventButton(-1)
 
         displayed.value = true
 

src/main/resources/mixins.lambda.json

@@ -18,6 +18,7 @@
     "accessor.gui.AccessorGuiChat",
     "accessor.gui.AccessorGuiDisconnected",
     "accessor.gui.AccessorGuiEditSign",
+    "accessor.gui.AccessorGuiScreen",
     "accessor.network.AccessorCPacketChatMessage",
     "accessor.network.AccessorCPacketCloseWindow",
     "accessor.network.AccessorCPacketPlayer",