1 files changed, 162 insertions, 0 deletions
diff --git a/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809ChorusFlowerBlockMixin.java b/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809ChorusFlowerBlockMixin.java
new file mode 100644
index 0000000..0a80eb5
--- /dev/null
+++ b/src/main/java/com/keuin/ohmyvanillamc/mixin/Mc113809ChorusFlowerBlockMixin.java
@@ -0,0 +1,162 @@
+package com.keuin.ohmyvanillamc.mixin;
+
+import com.keuin.ohmyvanillamc.OhMyVanillaMinecraft;
+import net.minecraft.block.*;
+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.world.World;
+import net.minecraft.world.WorldView;
+import org.jetbrains.annotations.Nullable;
+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(ChorusFlowerBlock.class)
+public abstract class Mc113809ChorusFlowerBlockMixin extends Block {
+
+    public Mc113809ChorusFlowerBlockMixin(Settings settings) {
+        super(settings);
+    }
+
+    @Shadow
+    @Final
+    public static IntProperty AGE;
+
+    @Shadow
+    @Final
+    private ChorusPlantBlock plantBlock;
+
+    @Shadow
+    private static boolean isSurroundedByAir(WorldView world, BlockPos pos, @Nullable Direction exceptDirection) {
+        throw new RuntimeException("Mixin error. Program should not go here.");
+    }
+
+    @Shadow
+    private void grow(World world, BlockPos pos, int age) {
+        throw new RuntimeException("Mixin error. Program should not go here.");
+    }
+
+    @Shadow
+    private void die(World world, BlockPos pos) {
+        throw new RuntimeException("Mixin error. Program should not go here.");
+    }
+
+    /**
+     * Reintroduce the MC-113809 glitch for chorus flower. The implementation is identical to Minecraft 1.15.2.
+     *
+     * @author trueKeuin
+     * @reason reintroduce MC-113809 for chorus flower.
+     */
+    @Overwrite
+    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);
+        }
+
+    }
+
+    /**
+     * Reintroduce the base class's implementation.
+     *
+     * @reason reintroduce base class's implementation.
+     * @author trueKeuin
+     */
+    @Overwrite
+    public boolean hasRandomTicks(BlockState state) {
+        boolean zf = OhMyVanillaMinecraft.getConfiguration().isReintroduceZeroTickFarm();
+        return ((state.get(AGE) < 5) && !zf) || (randomTicks && zf);
+    }
+
+    /**
+     * 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) {
+        BlockPos blockPos = pos.up();
+        if (world.isAir(blockPos) && blockPos.getY() < 256) {
+            int i = state.get(AGE);
+            if (i < 5) {
+                boolean bl = false;
+                boolean bl2 = false;
+                BlockState blockState = world.getBlockState(pos.down());
+                Block block = blockState.getBlock();
+                int l;
+                if (block == Blocks.END_STONE) {
+                    bl = true;
+                } else if (block == this.plantBlock) {
+                    l = 1;
+
+                    for (int k = 0; k < 4; ++k) {
+                        Block block2 = world.getBlockState(pos.down(l + 1)).getBlock();
+                        if (block2 != this.plantBlock) {
+                            if (block2 == Blocks.END_STONE) {
+                                bl2 = true;
+                            }
+                            break;
+                        }
+
+                        ++l;
+                    }
+
+                    if (l < 2 || l <= random.nextInt(bl2 ? 5 : 4)) {
+                        bl = true;
+                    }
+                } else if (blockState.isAir()) {
+                    bl = true;
+                }
+
+                if (bl && isSurroundedByAir(world, blockPos, (Direction) null) && world.isAir(pos.up(2))) {
+                    world.setBlockState(pos, this.plantBlock.withConnectionProperties(world, pos), 2);
+                    this.grow(world, blockPos, i);
+                } else if (i < 4) {
+                    l = random.nextInt(4);
+                    if (bl2) {
+                        ++l;
+                    }
+
+                    boolean bl3 = false;
+
+                    for (int m = 0; m < l; ++m) {
+                        Direction direction = Direction.Type.HORIZONTAL.random(random);
+                        BlockPos blockPos2 = pos.offset(direction);
+                        if (world.isAir(blockPos2) && world.isAir(blockPos2.down()) && isSurroundedByAir(world, blockPos2, direction.getOpposite())) {
+                            this.grow(world, blockPos2, i + 1);
+                            bl3 = true;
+                        }
+                    }
+
+                    if (bl3) {
+                        world.setBlockState(pos, this.plantBlock.withConnectionProperties(world, pos), 2);
+                    } else {
+                        this.die(world, pos);
+                    }
+                } else {
+                    this.die(world, pos);
+                }
+
+            }
+        }
+    }
+
+
+}