add shearing to the aura field creator

src/main/java/de/ellpeck/naturesaura/blocks/BlockFieldCreator.java

@@ -49,6 +49,7 @@ public class BlockFieldCreator extends BlockContainerImpl {
 
                                 TileEntityFieldCreator otherCreator = (TileEntityFieldCreator) otherTile;
                                 otherCreator.connectionOffset = pos.subtract(stored);
+                                otherCreator.isMain = false;
                                 otherCreator.sendToClients();
 
                                 compound.removeTag(key);

src/main/java/de/ellpeck/naturesaura/blocks/tiles/TileEntityFieldCreator.java

@@ -1,5 +1,6 @@
 package de.ellpeck.naturesaura.blocks.tiles;
 
+import de.ellpeck.naturesaura.Helper;
 import de.ellpeck.naturesaura.ModConfig;
 import de.ellpeck.naturesaura.api.aura.chunk.IAuraChunk;
 import de.ellpeck.naturesaura.api.aura.type.IAuraType;
@@ -8,6 +9,8 @@ import de.ellpeck.naturesaura.packet.PacketParticleStream;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockLiquid;
 import net.minecraft.block.state.IBlockState;
+import net.minecraft.entity.item.EntityItemFrame;
+import net.minecraft.item.ItemShears;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
@@ -17,6 +20,7 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.WorldServer;
+import net.minecraftforge.common.IShearable;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.util.FakePlayer;
 import net.minecraftforge.common.util.FakePlayerFactory;
@@ -24,6 +28,8 @@ import net.minecraftforge.event.ForgeEventFactory;
 import net.minecraftforge.event.world.BlockEvent;
 import net.minecraftforge.fluids.IFluidBlock;
 
+import java.util.List;
+
 public class TileEntityFieldCreator extends TileEntityImpl implements ITickable {
 
     public BlockPos connectionOffset;
@@ -87,6 +93,7 @@ public class TileEntityFieldCreator extends TileEntityImpl implements ITickable
             if (this.world.getTotalWorldTime() % 40 == 0)
                 chunk.drainAura(spot, 100);
 
+            boolean shears = this.shears() || creator.shears();
             Vec3d dist = new Vec3d(
                     this.pos.getX() - connectedPos.getX(),
                     this.pos.getY() - connectedPos.getY(),
@@ -112,15 +119,21 @@ public class TileEntityFieldCreator extends TileEntityImpl implements ITickable
 
                     FakePlayer fake = FakePlayerFactory.getMinecraft((WorldServer) this.world);
                     if (!MinecraftForge.EVENT_BUS.post(new BlockEvent.BreakEvent(this.world, pos, state, fake))) {
-                        NonNullList<ItemStack> drops = NonNullList.create();
+                        boolean shearBlock = shears && block instanceof IShearable;
-                        block.getDrops(drops, this.world, pos, state, 0);
+                        List<ItemStack> drops;
+                        if (shearBlock && ((IShearable) block).isShearable(ItemStack.EMPTY, this.world, pos))
+                            drops = ((IShearable) block).onSheared(ItemStack.EMPTY, this.world, pos, 0);
+                        else {
+                            drops = NonNullList.create();
+                            block.getDrops((NonNullList) drops, this.world, pos, state, 0);
+                        }
                         float chance = ForgeEventFactory.fireBlockHarvesting(drops, this.world, pos, state, 0, 1, false, fake);
                         if (chance > 0 && this.world.rand.nextFloat() <= chance) {
                             this.world.destroyBlock(pos, false);
                             for (ItemStack stack : drops)
                                 Block.spawnAsEntity(this.world, pos, stack);
 
-                            chunk.drainAura(spot, 300);
+                            chunk.drainAura(spot, shearBlock ? 1000 : 300);
                             this.sendParticles();
                         }
                     }
@@ -129,6 +142,16 @@ public class TileEntityFieldCreator extends TileEntityImpl implements ITickable
         }
     }
 
+    public boolean shears() {
+        List<EntityItemFrame> frames = Helper.getAttachedItemFrames(this.world, this.pos);
+        for (EntityItemFrame frame : frames) {
+            ItemStack stack = frame.getDisplayedItem();
+            if (!stack.isEmpty() && stack.getItem() instanceof ItemShears)
+                return true;
+        }
+        return false;
+    }
+
     private void sendParticles() {
         for (int j = 0; j < 2; j++) {
             BlockPos p = j == 0 ? this.pos : this.getConnectedPos();

src/main/resources/assets/naturesaura/patchouli_books/book/en_us/entries/using/field_creator.json

@@ -13,8 +13,8 @@
             "text": "To set up a field like this, two $(item)Aura Field Creators$() need to be placed a couple of blocks apart. Then, interacting with one of them while sneaking and interacting with the other while not sneaking will cause a connection between the two to form.$(br)Once supplying one of them with a $(thing)redstone signal$(), and after a short channel time, the field will be created between the two, allowing any blocks being placed there to be broken and their items being dropped into the world."
         },
         {
-          "type":"text",
+            "type": "text",
-            "text":"Of course, breaking blocks and especially the initial channel time will require a bit of $(aura) from the environment. Additionally, while the field is active, a small amount is consumed as a sort of upkeep cost."
+            "text": "Of course, breaking blocks and especially the initial channel time will require a bit of $(aura) from the environment. Additionally, while the field is active, a small amount is consumed as a sort of upkeep cost.$(br)Any botanist that requires items gained from $(thing)shearing$() certain blocks doesn't have to worry: Placing an $(item)Item Frame$() with $(item)Shears$() on any of the two $(item)Aura Field Creators$() will cause all shearable blocks inbetween to be sheared with all others being harvested normally."
         },
         {
             "type": "crafting",