Lophine/lophine-server/minecraft-patches/features/0011-Leaves-Redstone-Shears-Wrench.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Helvetica Volubi <suisuroru@blue-millennium.fun>
Date: Wed, 23 Jul 2025 20:28:40 +0800
Subject: [PATCH] Leaves: Redstone Shears Wrench

Co-authored by: violetc <58360096+s-yh-china@users.noreply.github.com>
As a part of : Leaves (https://github.com/LeavesMC/Leaves/blob/bfde470a867b74d177fe1b9a2a3ed5c49cd126c7/leaves-server/minecraft-patches/features/0009-Redstone-Shears-Wrench.patch)
Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)

diff --git a/net/minecraft/world/item/ShearsItem.java b/net/minecraft/world/item/ShearsItem.java
index 8cf3e51e12f9cf98836657e722edb23943f9e866..155693a18bb641a930a000bc9b1ccfc853e1bae5 100644
--- a/net/minecraft/world/item/ShearsItem.java
+++ b/net/minecraft/world/item/ShearsItem.java
@@ -24,6 +24,30 @@ import net.minecraft.world.level.block.GrowingPlantHeadBlock;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.level.gameevent.GameEvent;
 
+// Leaves start - shears wrench
+import net.minecraft.Util;
+import net.minecraft.network.chat.Component;
+import net.minecraft.world.level.block.ComparatorBlock;
+import net.minecraft.world.level.block.DispenserBlock;
+import net.minecraft.world.level.block.HopperBlock;
+import net.minecraft.world.level.block.ObserverBlock;
+import net.minecraft.world.level.block.RepeaterBlock;
+import net.minecraft.world.level.block.CrafterBlock;
+import net.minecraft.world.level.block.LeverBlock;
+import net.minecraft.world.level.block.CocoaBlock;
+import net.minecraft.world.level.block.TrapDoorBlock;
+import net.minecraft.world.level.block.FenceGateBlock;
+import net.minecraft.world.level.block.LightningRodBlock;
+import net.minecraft.world.level.block.RailBlock;
+import net.minecraft.world.level.block.BaseRailBlock;
+import net.minecraft.world.level.block.PoweredRailBlock;
+import net.minecraft.world.level.block.CalibratedSculkSensorBlock;
+import net.minecraft.world.level.block.piston.PistonBaseBlock;
+import net.minecraft.world.level.block.state.StateDefinition;
+import net.minecraft.world.level.block.state.properties.RailShape;
+import net.minecraft.world.level.block.state.properties.Property;
+// Leaves end - shears wrench
+
 public class ShearsItem extends Item {
     public ShearsItem(Item.Properties properties) {
         super(properties);
@@ -80,7 +104,108 @@ public class ShearsItem extends Item {
 
             return InteractionResult.SUCCESS;
         } else {
+            // Leaves start - shears wrench
+            Block block = blockState.getBlock();
+            if (fun.bm.lophine.config.modules.misc.RedStoneConfig.shears && (
+                block instanceof ObserverBlock ||
+                block instanceof DispenserBlock ||
+                block instanceof PistonBaseBlock ||
+                block instanceof HopperBlock ||
+                block instanceof RepeaterBlock ||
+                block instanceof ComparatorBlock ||
+                block instanceof CrafterBlock ||
+                block instanceof LeverBlock ||
+                block instanceof CocoaBlock ||
+                block instanceof TrapDoorBlock ||
+                block instanceof FenceGateBlock ||
+                block instanceof LightningRodBlock ||
+                block instanceof CalibratedSculkSensorBlock ||
+                block instanceof BaseRailBlock
+            )) {
+                StateDefinition<Block, BlockState> blockstatelist = block.getStateDefinition();
+                Property<?> iblockstate;
+                if (block instanceof CrafterBlock) iblockstate = blockstatelist.getProperty("orientation");
+                else if (block instanceof BaseRailBlock) iblockstate = blockstatelist.getProperty("shape");
+                else iblockstate = blockstatelist.getProperty("facing");
+                Player player = context.getPlayer();
+
+                if (iblockstate == null || player == null) {
+                    return InteractionResult.FAIL;
+                }
+
+                if (block instanceof BaseRailBlock) {
+                    if (block instanceof RailBlock) {
+                        if (blockState.getValue(RailBlock.SHAPE).isSlope()) {
+                            return InteractionResult.FAIL;
+                        }
+                    } else {
+                        if (getNameHelper(blockState, PoweredRailBlock.POWERED).equals("true")) {
+                            return InteractionResult.FAIL;
+                        }
+                        if (blockState.getValue(PoweredRailBlock.SHAPE).isSlope()) {
+                            return InteractionResult.FAIL;
+                        }
+                    }
+                }
+
+                if (block instanceof PistonBaseBlock) {
+                    if (getNameHelper(blockState, PistonBaseBlock.EXTENDED).equals("true")) {
+                        return InteractionResult.FAIL;
+                    }
+                }
+
+                if (block instanceof RepeaterBlock || block instanceof ComparatorBlock) {
+                    if (getNameHelper(blockState, ComparatorBlock.POWERED).equals("true")) {
+                        return InteractionResult.FAIL;
+                    }
+                    if (block instanceof RepeaterBlock) {
+                        if (getNameHelper(blockState, RepeaterBlock.LOCKED).equals("true")) {
+                            return InteractionResult.FAIL;
+                        }
+                    }
+                }
+
+                if (block instanceof CrafterBlock) {
+                    if (getNameHelper(blockState, CrafterBlock.CRAFTING).equals("true")) {
+                        return InteractionResult.FAIL;
+                    }
+                }
+
+                BlockState iblockdata1 = ShearsItem.cycleState(blockState, iblockstate, player.isSecondaryUseActive());
+                level.setBlock(clickedPos, iblockdata1, 18);
+                ShearsItem.message(player, Component.translatable("item.minecraft.debug_stick.update", iblockstate.getName(), ShearsItem.getNameHelper(iblockdata1, iblockstate)));
+                return InteractionResult.CONSUME;
+            }
+            // Leaves end - shears wrench
+
             return super.useOn(context);
         }
     }
+
+    // Leaves start - shears wrench
+    private static <T extends Comparable<T>> BlockState cycleState(BlockState state, Property<T> property, boolean inverse) {
+        List<T> possibleValues = property.getPossibleValues();
+        if (possibleValues.getFirst() instanceof RailShape) {
+            boolean isRailBlock = state.getBlock() instanceof RailBlock;
+            possibleValues = possibleValues.stream().filter(possibleValue -> {
+                RailShape shape = (RailShape) possibleValue;
+                if (isRailBlock) return !shape.isSlope();
+                return !shape.isSlope() && shape != RailShape.NORTH_EAST && shape != RailShape.NORTH_WEST && shape != RailShape.SOUTH_EAST && shape != RailShape.SOUTH_WEST;
+            }).toList();
+        }
+        return state.setValue(property, ShearsItem.getRelative(possibleValues, state.getValue(property), inverse)); // CraftBukkit - decompile error
+    }
+
+    private static <T> T getRelative(Iterable<T> elements, T current, boolean inverse) {
+        return inverse ? Util.findPreviousInIterable(elements, current) : Util.findNextInIterable(elements, current);
+    }
+
+    private static void message(Player player, Component message) {
+        ((ServerPlayer) player).sendSystemMessage(message, true);
+    }
+
+    private static <T extends Comparable<T>> String getNameHelper(BlockState state, Property<T> property) {
+        return property.getName(state.getValue(property));
+    }
+    // Leaves end - shears wrench
 }