From 81b6c329ae1c886dbed7ea3253580c985fcea92d Mon Sep 17 00:00:00 2001
From: Keuin <keuinx@gmail.com>
Date: Sat, 16 Jan 2021 23:36:03 +0800
Subject: MC113809: now supports all 5 plants in 20w11a for zero tick farms:
 cactus, sugar cane, bamboo, twisted vine and weeping vine. Simple tests are
 passed. However, further tests are needed.

---
 gradle.properties                                  |  2 +-
 .../mixin/Mc113809AbstractPlantStemBlockMixin.java | 86 ++++++++++++++++++++++
 src/main/resources/ohmyvanillamc.mixins.json       |  3 +-
 3 files changed, 89 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809AbstractPlantStemBlockMixin.java

diff --git a/gradle.properties b/gradle.properties
index fe31ad3..e790de9 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -6,7 +6,7 @@ minecraft_version=1.16.4
 yarn_mappings=1.16.4+build.9
 loader_version=0.11.0
 # Mod Properties
-mod_version=1.5.3
+mod_version=1.5.4
 maven_group=com.keuin.omvm
 archives_base_name=oh-my-vanilla-mc
 # Dependencies
diff --git a/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809AbstractPlantStemBlockMixin.java b/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809AbstractPlantStemBlockMixin.java
new file mode 100644
index 0000000..1571981
--- /dev/null
+++ b/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809AbstractPlantStemBlockMixin.java
@@ -0,0 +1,86 @@
+package com.keuin.ohmyvanillamc.mixin;
+
+import com.keuin.ohmyvanillamc.OhMyVanillaMinecraft;
+import net.minecraft.block.AbstractPlantPartBlock;
+import net.minecraft.block.AbstractPlantStemBlock;
+import net.minecraft.block.BlockState;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.state.property.IntProperty;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.util.shape.VoxelShape;
+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(AbstractPlantStemBlock.class)
+public abstract class Mc113809AbstractPlantStemBlockMixin extends AbstractPlantPartBlock {
+
+    protected Mc113809AbstractPlantStemBlockMixin(Settings settings, Direction growthDirection, VoxelShape outlineShape, boolean tickWater) {
+        super(settings, growthDirection, outlineShape, tickWater);
+    }
+
+    @Shadow
+    @Final
+    public static IntProperty AGE;
+
+    @Shadow
+    @Final
+    private double growthChance;
+
+    @Shadow
+    protected abstract boolean chooseStemState(BlockState state);
+
+    /**
+     * @reason Revert to the super class's impl (Block's).
+     * @author trueKeuin
+     */
+    @Overwrite
+    public boolean hasRandomTicks(BlockState state) {
+        return super.hasRandomTicks(state);
+    }
+
+    /**
+     * Reintroduce the MC-113809 glitch for kelp, twisted vine and weeping vine. The implementation is identical to Minecraft 1.15.2.
+     *
+     * @author trueKeuin
+     * @reason reintroduce MC-113809 for bamboo.
+     */
+    @Override
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random random) {
+        if (!state.canPlaceAt(world, pos)) {
+            world.breakBlock(pos, true);
+        } else if (OhMyVanillaMinecraft.getConfiguration().isReintroduceZeroTickFarm()) {
+            realGrow(state, world, pos, random);
+        }
+    }
+
+    /**
+     * 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 {
+            realGrow(state, world, pos, random);
+        }
+    }
+
+    private void realGrow(BlockState state, ServerWorld world, BlockPos pos, Random random) {
+        if (state.get(AGE) < 25 && random.nextDouble() < this.growthChance) {
+            BlockPos blockPos = pos.offset(this.growthDirection);
+            if (this.chooseStemState(world.getBlockState(blockPos))) {
+                world.setBlockState(blockPos, state.cycle(AGE));
+            }
+        }
+    }
+
+}
diff --git a/src/main/resources/ohmyvanillamc.mixins.json b/src/main/resources/ohmyvanillamc.mixins.json
index 1070400..ce61122 100644
--- a/src/main/resources/ohmyvanillamc.mixins.json
+++ b/src/main/resources/ohmyvanillamc.mixins.json
@@ -11,7 +11,8 @@
     "ReintroduceLlamaItemDuping",
     "Mc113809SugarCaneBlockMixin",
     "Mc113809CactusBlockMixin",
-    "Mc113809ChorusFlowerBlockMixin"
+    "Mc113809ChorusFlowerBlockMixin",
+    "Mc113809AbstractPlantStemBlockMixin"
   ],
   "injectors": {
     "defaultRequire": 1
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