Implement MC-113809 (zero-tick plants farm) reintroduction (only cactus is implemented).

4 files changed, 106 insertions, 5 deletions

diff --git a/src/main/java/com/keuin/ohmyvanillamc/DebugUtil.java b/src/main/java/com/keuin/ohmyvanillamc/DebugUtil.java
new file mode 100644
index 0000000..2be644d
--- /dev/null
+++ b/src/main/java/com/keuin/ohmyvanillamc/DebugUtil.java
@@ -0,0 +1,7 @@
+package com.keuin.ohmyvanillamc;
+
+public class DebugUtil {
+    public static void printThreadInfo(String mark) {
+        System.out.printf("[%s] Thread %s : id=%d%n", mark, Thread.currentThread().getName(), Thread.currentThread().getId());
+    }
+}
diff --git a/src/main/java/com/keuin/ohmyvanillamc/OmvmConfiguration.java b/src/main/java/com/keuin/ohmyvanillamc/OmvmConfiguration.java
index b9e42f4..b3d7b83 100644
--- a/src/main/java/com/keuin/ohmyvanillamc/OmvmConfiguration.java
+++ b/src/main/java/com/keuin/ohmyvanillamc/OmvmConfiguration.java
@@ -9,17 +9,19 @@ public class OmvmConfiguration {
     private final boolean disablePhantomSpawning;
     private final boolean disableWanderingTraderSpawning;
     private final boolean reintroduceLlamaItemDuplicating;
+    private final boolean reintroduceZeroTickFarm;
 
     public OmvmConfiguration() {
-        this(true, false, false, false, false);
+        this(true, false, false, false, false, false);
     }
 
-    public OmvmConfiguration(boolean fixEntityTrackerEntrySpamming, boolean disableFishSchooling, boolean disablePhantomSpawning, boolean disableWanderingTraderSpawning, boolean reintroduceLlamaItemDuplicating) {
+    public OmvmConfiguration(boolean fixEntityTrackerEntrySpamming, boolean disableFishSchooling, boolean disablePhantomSpawning, boolean disableWanderingTraderSpawning, boolean reintroduceLlamaItemDuplicating, boolean reintroduceZeroTickFarm) {
         this.fixEntityTrackerEntrySpamming = fixEntityTrackerEntrySpamming;
         this.disableFishSchooling = disableFishSchooling;
         this.disablePhantomSpawning = disablePhantomSpawning;
         this.disableWanderingTraderSpawning = disableWanderingTraderSpawning;
         this.reintroduceLlamaItemDuplicating = reintroduceLlamaItemDuplicating;
+        this.reintroduceZeroTickFarm = reintroduceZeroTickFarm;
     }
 
     public boolean isFixEntityTrackerEntrySpamming() {
@@ -42,6 +44,10 @@ public class OmvmConfiguration {
         return reintroduceLlamaItemDuplicating;
     }
 
+    public boolean isReintroduceZeroTickFarm() {
+        return reintroduceZeroTickFarm;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;
@@ -51,12 +57,13 @@ public class OmvmConfiguration {
                 disableFishSchooling == that.disableFishSchooling &&
                 disablePhantomSpawning == that.disablePhantomSpawning &&
                 disableWanderingTraderSpawning == that.disableWanderingTraderSpawning &&
-                reintroduceLlamaItemDuplicating == that.reintroduceLlamaItemDuplicating;
+                reintroduceLlamaItemDuplicating == that.reintroduceLlamaItemDuplicating &&
+                reintroduceZeroTickFarm == that.reintroduceZeroTickFarm;
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(fixEntityTrackerEntrySpamming, disableFishSchooling, disablePhantomSpawning, disableWanderingTraderSpawning, reintroduceLlamaItemDuplicating);
+        return Objects.hash(fixEntityTrackerEntrySpamming, disableFishSchooling, disablePhantomSpawning, disableWanderingTraderSpawning, reintroduceLlamaItemDuplicating, reintroduceZeroTickFarm);
     }
 
     @Override
@@ -66,7 +73,8 @@ public class OmvmConfiguration {
         s += "(Optimization) Disable Fish Schooling: " + disableFishSchooling + "\n";
         s += "(Exotic Feature) Disable Phantom Spawning: " + disablePhantomSpawning + "\n";
         s += "(Exotic Feature) Disable Wandering Trader Spawning: " + disableWanderingTraderSpawning + "\n";
-        s += "(Obsolete Vanilla Feature) Reintroduce Llama Item Duplicating: " + reintroduceLlamaItemDuplicating;
+        s += "(Obsolete Vanilla Feature) Reintroduce Llama Item Duplicating: " + reintroduceLlamaItemDuplicating + "\n";
+        s += "(Obsolete Vanilla Feature) Reintroduce 0-tick Plants Farm: " + reintroduceZeroTickFarm;
         return s;
     }
 }
diff --git a/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809SugarCaneBlockMixin.java b/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809SugarCaneBlockMixin.java
new file mode 100644
index 0000000..23d4507
--- /dev/null
+++ b/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809SugarCaneBlockMixin.java
@@ -0,0 +1,83 @@
+package com.keuin.ohmyvanillamc.mixin;
+
+import com.keuin.ohmyvanillamc.OhMyVanillaMinecraft;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.SugarCaneBlock;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.state.property.IntProperty;
+import net.minecraft.util.math.BlockPos;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Overwrite;
+import org.spongepowered.asm.mixin.Shadow;
+
+import java.util.Random;
+
+@Mixin(SugarCaneBlock.class)
+public abstract class Mc113809SugarCaneBlockMixin extends Block {
+
+    public Mc113809SugarCaneBlockMixin(Settings settings) {
+        super(settings);
+    }
+
+    @Shadow
+    @Final
+    public static IntProperty AGE;
+
+    /**
+     * Revert to base class (Block) implementation of randomTick: just simply call scheduledTick.
+     * (both 1.15.2 and 1.16.4 are the same)
+     *
+     * @author trueKeuin
+     * @reason revert to the base class `Block` implementation.
+     */
+    @Overwrite
+    public void randomTick(BlockState state, ServerWorld world, BlockPos pos, Random random) {
+        if (OhMyVanillaMinecraft.getConfiguration().isReintroduceZeroTickFarm()) {
+            scheduledTick(state, world, pos, random);
+        } else if (world.isAir(pos.up())) {
+            int i;
+            for (i = 1; world.getBlockState(pos.down(i)).isOf((SugarCaneBlock) (Object) this); ++i) {
+            }
+
+            if (i < 3) {
+                int j = state.get(AGE);
+                if (j == 15) {
+                    world.setBlockState(pos.up(), this.getDefaultState());
+                    world.setBlockState(pos, state.with(AGE, 0), 4);
+                } else {
+                    world.setBlockState(pos, state.with(AGE, j + 1), 4);
+                }
+            }
+        }
+
+    }
+
+    /**
+     * Reintroduce the MC-113809 glitch for sugar cane. The implementation is identical to Minecraft 1.15.2.
+     *
+     * @author trueKeuin
+     * @reason reintroduce MC-113809 for sugar cane.
+     */
+    @Overwrite
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random random) {
+        if (!state.canPlaceAt(world, pos)) {
+            world.breakBlock(pos, true);
+        } else if (world.isAir(pos.up()) && OhMyVanillaMinecraft.getConfiguration().isReintroduceZeroTickFarm()) {
+            int i;
+            for (i = 1; world.getBlockState(pos.down(i)).isOf((SugarCaneBlock) (Object) this); ++i) {
+            }
+
+            if (i < 3) {
+                int j = state.get(AGE);
+                if (j == 15) {
+                    world.setBlockState(pos.up(), this.getDefaultState());
+                    world.setBlockState(pos, state.with(AGE, 0), 4);
+                } else {
+                    world.setBlockState(pos, state.with(AGE, j + 1), 4);
+                }
+            }
+        }
+    }
+}
diff --git a/src/main/java/com/keuin/ohmyvanillamc/mixin/ReintroduceLlamaItemDuping.java b/src/main/java/com/keuin/ohmyvanillamc/mixin/ReintroduceLlamaItemDuping.java
index 29ed03a..f3c0b60 100644
--- a/src/main/java/com/keuin/ohmyvanillamc/mixin/ReintroduceLlamaItemDuping.java
+++ b/src/main/java/com/keuin/ohmyvanillamc/mixin/ReintroduceLlamaItemDuping.java
@@ -22,6 +22,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
+/**
+ * Reintroduce MC-161754 glitch
+ */
 @Mixin(PlayerManager.class)
 public abstract class ReintroduceLlamaItemDuping {