Fix ClassCastException caused by Sponge assuming things

build.gradle

@@ -27,7 +27,7 @@ targetCompatibility = 1.8
 
 group = "io.github.lxgaming"
 archivesBaseName = "Sledgehammer"
-version = "1.2.2-1.12.2"
+version = "1.2.3-1.12.2"
 
 minecraft {
     version = "1.12.2-14.23.4.2705"

src/main/java/io/github/lxgaming/sledgehammer/Sledgehammer.java

@@ -75,7 +75,8 @@ private void registerMappings() {
 
         // Mixin Forge
         getMixinMappings().put("io.github.lxgaming.sledgehammer.mixin.forge.common.MixinDimensionManager", MixinCategory::isDimensionManager);
-        getMixinMappings().put("io.github.lxgaming.sledgehammer.mixin.forge.common.MixinForgeHooks", MixinCategory::isAdvancementStacktrace);
+        getMixinMappings().put("io.github.lxgaming.sledgehammer.mixin.forge.common.MixinForgeHooks_Advancement", MixinCategory::isAdvancementStacktrace);
+        getMixinMappings().put("io.github.lxgaming.sledgehammer.mixin.forge.common.MixinForgeHooks_Harvest", MixinCategory::isHarvestBlock);
         getMixinMappings().put("io.github.lxgaming.sledgehammer.mixin.forge.entity.passive.MixinEntityVillager", MixinCategory::isTravelingMerchant);
         getMixinMappings().put("io.github.lxgaming.sledgehammer.mixin.forge.world.storage.MixinWorldInfo", MixinCategory::isCeremonyRain);
     }

src/main/java/io/github/lxgaming/sledgehammer/configuration/category/MixinCategory.java

@@ -43,6 +43,9 @@ public class MixinCategory {
     @Setting(value = "dimension-manager", comment = "Fixes https://github.com/SpongePowered/SpongeForge/issues/2173 (Fixed in SpongeForge-1.12.2-2703-7.1.0-BETA-3124)")
     private boolean dimensionManager = false;
 
+    @Setting(value = "harvest-block", comment = "Prevents ClassCastException caused by Sponge assuming things")
+    private boolean harvestBlock = false;
+
     @Setting(value = "interact-events", comment = "Fixes https://github.com/SpongePowered/SpongeCommon/issues/2013")
     private boolean interactEvents = false;
 
@@ -80,6 +83,10 @@ public boolean isDimensionManager() {
         return dimensionManager;
     }
 
+    public boolean isHarvestBlock() {
+        return harvestBlock;
+    }
+
     public boolean isInteractEvents() {
         return interactEvents;
     }

src/main/java/io/github/lxgaming/sledgehammer/mixin/forge/common/MixinForgeHooks.java → src/main/java/io/github/lxgaming/sledgehammer/mixin/forge/common/MixinForgeHooks_Advancement.java

@@ -24,7 +24,7 @@
 import org.spongepowered.asm.mixin.injection.Redirect;
 
 @Mixin(value = ForgeHooks.class, priority = 1337, remap = false)
-public abstract class MixinForgeHooks {
+public abstract class MixinForgeHooks_Advancement {
 
     @Redirect(method = "lambda$loadAdvancements$0", at = @At(value = "INVOKE", target = "Lorg/apache/logging/log4j/Logger;error(Ljava/lang/String;Ljava/lang/Throwable;)V"))
     private static void onLoadAdvancementsError(Logger logger, String message, Throwable throwable) {

src/main/java/io/github/lxgaming/sledgehammer/mixin/forge/common/MixinForgeHooks_Harvest.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2018 Alex Thomson
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.github.lxgaming.sledgehammer.mixin.forge.common;
+
+import net.minecraft.block.Block;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.IBlockAccess;
+import net.minecraftforge.common.ForgeHooks;
+import org.spongepowered.api.entity.living.player.Player;
+import org.spongepowered.api.text.Text;
+import org.spongepowered.api.text.chat.ChatTypes;
+import org.spongepowered.api.text.format.TextColors;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import org.spongepowered.common.event.tracking.PhaseTracker;
+import org.spongepowered.common.interfaces.world.IMixinWorld;
+
+@Mixin(value = ForgeHooks.class, priority = 1337, remap = false)
+public abstract class MixinForgeHooks_Harvest {
+
+    @Inject(method = "canHarvestBlock",
+            at = @At(value = "INVOKE",
+                    target = "Lorg/spongepowered/common/event/tracking/IPhaseState;isInteraction()Z"
+            ),
+            cancellable = true
+    )
+    private static void onCanHarvestBlock(Block block, EntityPlayer entityPlayer, IBlockAccess blockAccess, BlockPos blockPos, CallbackInfoReturnable<Boolean> callbackInfoReturnable) {
+        // Prevents ClassCastException caused by Sponge assuming the IBlockAccess is an instanceof IMixinWorld
+        if (!PhaseTracker.getInstance().getCurrentPhaseData().state.isInteraction() && !(blockAccess instanceof IMixinWorld)) {
+            callbackInfoReturnable.setReturnValue(false);
+
+            // Using ACTION_BAR to prevent chat spam
+            ((Player) entityPlayer).sendMessage(ChatTypes.ACTION_BAR, Text.of(TextColors.RED, "Harvest denied at (", blockPos.getX(), ", ", blockPos.getY(), ", ", blockPos.getZ(), ")"));
+        }
+    }
+}

src/main/java/io/github/lxgaming/sledgehammer/util/Reference.java

@@ -20,7 +20,7 @@ public class Reference {
 
     public static final String PLUGIN_ID = "sledgehammer";
     public static final String PLUGIN_NAME = "Sledgehammer";
-    public static final String PLUGIN_VERSION = "1.2.2-1.12.2";
+    public static final String PLUGIN_VERSION = "1.2.3-1.12.2";
     public static final String DESCRIPTION = "Smashes the stupid out of the server.";
     public static final String AUTHORS = "LX_Gaming";
     public static final String SOURCE = "https://github.com/LXGaming/Sledgehammer/";

src/main/resources/mixins.sledgehammer.forge.json

@@ -8,7 +8,8 @@
   "compatibilityLevel": "JAVA_8",
   "mixins": [
     "common.MixinDimensionManager",
-    "common.MixinForgeHooks",
+    "common.MixinForgeHooks_Advancement",
+    "common.MixinForgeHooks_Harvest",
     "entity.passive.MixinEntityVillager",
     "world.storage.MixinWorldInfo"
   ],